[New LWP 226] [New LWP 227] [New LWP 228] [New LWP 232] [New LWP 235] [New LWP 236] [New LWP 321] [New LWP 325] [New LWP 331] [New LWP 17926] [New LWP 17958] [New LWP 21015] [New LWP 22225] [New LWP 23488] [New LWP 23918] [New LWP 23919] [New LWP 23920] [New LWP 23921] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 Thread 19 (Thread 0x7f5ebd314640 (LWP 23921) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 18 (Thread 0x7f032e353640 (LWP 23920) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 17 (Thread 0x7f032d351640 (LWP 23919) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 16 (Thread 0x7f0317fff640 (LWP 23918) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 15 (Thread 0x7f5ebcb13640 (LWP 23488) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 14 (Thread 0x7f03167fc640 (LWP 22225) "mariadbd"): #0 0x00007f5ed44a80eb in fdatasync () from /lib64/libc.so.6 #1 0x000055d55aaf4691 in os_file_flush_func(int) () #2 0x000055d55aad4900 in log_t::flush(unsigned long) () #3 0x000055d55aad531d in log_write_up_to(unsigned long, bool, completion_callback const*) () #4 0x000055d55ab70cca in srv_master_callback () #5 0x000055d55ac65f20 in tpool::thread_pool_generic::timer_generic::execute(void*) () #6 0x000055d55ac66982 in tpool::task::execute() () #7 0x000055d55ac64b1f in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #8 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #9 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #10 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 13 (Thread 0x7f032f355640 (LWP 21015) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 12 (Thread 0x7f032db52640 (LWP 17958) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 11 (Thread 0x7f5ebdb15640 (LWP 17926) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 10 (Thread 0x7f5ebc2c7640 (LWP 331) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 9 (Thread 0x7f5ebc312640 (LWP 325) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 8 (Thread 0x7f5ed0083640 (LWP 321) "mariadbd"): #0 0x00007f5ed43a1e5d in syscall () from /lib64/libc.so.6 #1 0x000055d55ab732f8 in srw_mutex_impl::wait_and_lock() () #2 0x000055d55a42ba4c in buf_page_get_low(page_id_t, unsigned long, unsigned long, buf_block_t*, unsigned long, mtr_t*, dberr_t*) () #3 0x000055d55abb7321 in btr_cur_t::search_leaf(dtuple_t const*, page_cur_mode_t, btr_latch_mode, mtr_t*) () #4 0x000055d55ab31866 in row_ins_sec_index_entry_low(unsigned long, btr_latch_mode, dict_index_t*, mem_block_info_t*, mem_block_info_t*, dtuple_t*, unsigned long, que_thr_t*) () #5 0x000055d55ab35038 in row_ins_sec_index_entry(dict_index_t*, dtuple_t*, que_thr_t*, bool) () #6 0x000055d55ab356d5 in row_ins_step(que_thr_t*) () #7 0x000055d55ab47561 in row_insert_for_mysql(unsigned char const*, row_prebuilt_t*, ins_mode_t) () #8 0x000055d55aa97037 in ha_innobase::write_row(unsigned char const*) () #9 0x000055d55a7c2678 in handler::ha_write_row(unsigned char const*) () #10 0x000055d55a5ffaee in copy_data_between_tables(THD*, TABLE*, TABLE*, bool, unsigned int, st_order*, unsigned long long*, unsigned long long*, Alter_info*, Alter_table_ctx*, bool, unsigned long long) [clone .constprop.0] () #11 0x000055d55a605517 in mysql_alter_table(THD*, st_mysql_const_lex_string const*, st_mysql_const_lex_string const*, Table_specification_st*, TABLE_LIST*, Recreate_info*, Alter_info*, unsigned int, st_order*, bool, bool) () #12 0x000055d55a6720e0 in Sql_cmd_alter_table::execute(THD*) () #13 0x000055d55a542cc5 in mysql_execute_command(THD*, bool) () #14 0x000055d55a543c11 in mysql_parse(THD*, char*, unsigned int, Parser_state*) () #15 0x000055d55a5465f5 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool) () #16 0x000055d55a548244 in do_command(THD*, bool) () #17 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #18 0x000055d55a66d3dd in handle_one_connection () #19 0x000055d55a9d7962 in pfs_spawn_thread () #20 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #21 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 7 (Thread 0x7f5ed00ce640 (LWP 236) "mariadbd"): #0 0x00007f5ed43b8b0a in sigtimedwait () from /lib64/libc.so.6 #1 0x000055d55a4327bb in signal_hand () #2 0x000055d55a9d7962 in pfs_spawn_thread () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 6 (Thread 0x7f5ed0119640 (LWP 235) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ba0 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a532810 in handle_manager () #3 0x000055d55a9d7962 in pfs_spawn_thread () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 5 (Thread 0x7f5ed0b25640 (LWP 232) "mariadbd"): #0 0x00007f5ed43a1e5d in syscall () from /lib64/libc.so.6 #1 0x000055d55aaed6b3 in group_commit_lock::acquire(unsigned long, completion_callback const*) () #2 0x000055d55aad5208 in log_write_up_to(unsigned long, bool, completion_callback const*) () #3 0x000055d55abd52ca in buf_page_t::flush(bool, fil_space_t*) () #4 0x000055d55abd5777 in buf_flush_try_neighbors(fil_space_t*, page_id_t, buf_page_t*, bool, bool, unsigned long, unsigned long) () #5 0x000055d55abd7670 in buf_flush_list_holding_mutex(unsigned long, unsigned long) () #6 0x000055d55abd8b6b in buf_flush_page_cleaner() () #7 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #8 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #9 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 4 (Thread 0x7f5ed1326640 (LWP 228) "mariadbd"): #0 0x00007f5ed43a1e5d in syscall () from /lib64/libc.so.6 #1 0x000055d55ac67069 in tpool::aio_linux::getevent_thread_routine(tpool::aio_linux*) () #2 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 3 (Thread 0x7f5ed1f49640 (LWP 227) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a96c280 in my_service_thread_sleep () #3 0x000055d55a9645de in ma_checkpoint_background () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 2 (Thread 0x7f5ed3edc640 (LWP 226) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55acd285f in timer_handler () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 1 (Thread 0x7f5ed401d900 (LWP 206) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a43ae0b in handle_connections_sockets() () #2 0x000055d55a43c0f5 in mysqld_main(int, char**) () #3 0x00007f5ed43a2eb0 in __libc_start_call_main () from /lib64/libc.so.6 #4 0x00007f5ed43a2f60 in __libc_start_main_impl () from /lib64/libc.so.6 #5 0x000055d55a42fc75 in _start () [Inferior 1 (process 206) detached] [New LWP 226] [New LWP 227] [New LWP 228] [New LWP 232] [New LWP 235] [New LWP 236] [New LWP 321] [New LWP 325] [New LWP 331] [New LWP 17926] [New LWP 17958] [New LWP 21015] [New LWP 22225] [New LWP 23488] [New LWP 23918] [New LWP 23919] [New LWP 23920] [New LWP 23921] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 Thread 19 (Thread 0x7f5ebd314640 (LWP 23921) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 18 (Thread 0x7f032e353640 (LWP 23920) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 17 (Thread 0x7f032d351640 (LWP 23919) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 16 (Thread 0x7f0317fff640 (LWP 23918) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 15 (Thread 0x7f5ebcb13640 (LWP 23488) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 14 (Thread 0x7f03167fc640 (LWP 22225) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 13 (Thread 0x7f032f355640 (LWP 21015) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 12 (Thread 0x7f032db52640 (LWP 17958) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 11 (Thread 0x7f5ebdb15640 (LWP 17926) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 10 (Thread 0x7f5ebc2c7640 (LWP 331) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 9 (Thread 0x7f5ebc312640 (LWP 325) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 8 (Thread 0x7f5ed0083640 (LWP 321) "mariadbd"): #0 0x000055d55a42ad4a in buf_page_get_low(page_id_t, unsigned long, unsigned long, buf_block_t*, unsigned long, mtr_t*, dberr_t*) () #1 0x000055d55abb7321 in btr_cur_t::search_leaf(dtuple_t const*, page_cur_mode_t, btr_latch_mode, mtr_t*) () #2 0x000055d55ab31866 in row_ins_sec_index_entry_low(unsigned long, btr_latch_mode, dict_index_t*, mem_block_info_t*, mem_block_info_t*, dtuple_t*, unsigned long, que_thr_t*) () #3 0x000055d55ab35038 in row_ins_sec_index_entry(dict_index_t*, dtuple_t*, que_thr_t*, bool) () #4 0x000055d55ab356d5 in row_ins_step(que_thr_t*) () #5 0x000055d55ab47561 in row_insert_for_mysql(unsigned char const*, row_prebuilt_t*, ins_mode_t) () #6 0x000055d55aa97037 in ha_innobase::write_row(unsigned char const*) () #7 0x000055d55a7c2678 in handler::ha_write_row(unsigned char const*) () #8 0x000055d55a5ffaee in copy_data_between_tables(THD*, TABLE*, TABLE*, bool, unsigned int, st_order*, unsigned long long*, unsigned long long*, Alter_info*, Alter_table_ctx*, bool, unsigned long long) [clone .constprop.0] () #9 0x000055d55a605517 in mysql_alter_table(THD*, st_mysql_const_lex_string const*, st_mysql_const_lex_string const*, Table_specification_st*, TABLE_LIST*, Recreate_info*, Alter_info*, unsigned int, st_order*, bool, bool) () #10 0x000055d55a6720e0 in Sql_cmd_alter_table::execute(THD*) () #11 0x000055d55a542cc5 in mysql_execute_command(THD*, bool) () #12 0x000055d55a543c11 in mysql_parse(THD*, char*, unsigned int, Parser_state*) () #13 0x000055d55a5465f5 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool) () #14 0x000055d55a548244 in do_command(THD*, bool) () #15 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #16 0x000055d55a66d3dd in handle_one_connection () #17 0x000055d55a9d7962 in pfs_spawn_thread () #18 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #19 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 7 (Thread 0x7f5ed00ce640 (LWP 236) "mariadbd"): #0 0x00007f5ed43b8b0a in sigtimedwait () from /lib64/libc.so.6 #1 0x000055d55a4327bb in signal_hand () #2 0x000055d55a9d7962 in pfs_spawn_thread () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 6 (Thread 0x7f5ed0119640 (LWP 235) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ba0 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a532810 in handle_manager () #3 0x000055d55a9d7962 in pfs_spawn_thread () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 5 (Thread 0x7f5ed0b25640 (LWP 232) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55abd79b7 in buf_flush_page_cleaner() () #3 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 4 (Thread 0x7f5ed1326640 (LWP 228) "mariadbd"): #0 0x00007f5ed43a1e5d in syscall () from /lib64/libc.so.6 #1 0x000055d55ac67069 in tpool::aio_linux::getevent_thread_routine(tpool::aio_linux*) () #2 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 3 (Thread 0x7f5ed1f49640 (LWP 227) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a96c280 in my_service_thread_sleep () #3 0x000055d55a9645de in ma_checkpoint_background () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 2 (Thread 0x7f5ed3edc640 (LWP 226) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55acd285f in timer_handler () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 1 (Thread 0x7f5ed401d900 (LWP 206) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a43ae0b in handle_connections_sockets() () #2 0x000055d55a43c0f5 in mysqld_main(int, char**) () #3 0x00007f5ed43a2eb0 in __libc_start_call_main () from /lib64/libc.so.6 #4 0x00007f5ed43a2f60 in __libc_start_main_impl () from /lib64/libc.so.6 #5 0x000055d55a42fc75 in _start () [Inferior 1 (process 206) detached] [New LWP 226] [New LWP 227] [New LWP 228] [New LWP 232] [New LWP 235] [New LWP 236] [New LWP 321] [New LWP 325] [New LWP 331] [New LWP 17926] [New LWP 17958] [New LWP 21015] [New LWP 22225] [New LWP 23488] [New LWP 23918] [New LWP 23919] [New LWP 23920] [New LWP 23921] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 Thread 19 (Thread 0x7f5ebd314640 (LWP 23921) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 18 (Thread 0x7f032e353640 (LWP 23920) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 17 (Thread 0x7f032d351640 (LWP 23919) "mariadbd"): #0 0x00007f5ed43a1e5d in syscall () from /lib64/libc.so.6 #1 0x000055d55ab733d8 in ssux_lock_impl::wr_wait(unsigned int) () #2 0x000055d55aad54ac in log_write_up_to(unsigned long, bool, completion_callback const*) () #3 0x000055d55ab70cca in srv_master_callback () #4 0x000055d55ac65f20 in tpool::thread_pool_generic::timer_generic::execute(void*) () #5 0x000055d55ac66982 in tpool::task::execute() () #6 0x000055d55ac64b1f in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #7 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #8 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #9 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 16 (Thread 0x7f0317fff640 (LWP 23918) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 15 (Thread 0x7f5ebcb13640 (LWP 23488) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 14 (Thread 0x7f03167fc640 (LWP 22225) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 13 (Thread 0x7f032f355640 (LWP 21015) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 12 (Thread 0x7f032db52640 (LWP 17958) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 11 (Thread 0x7f5ebdb15640 (LWP 17926) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 10 (Thread 0x7f5ebc2c7640 (LWP 331) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 9 (Thread 0x7f5ebc312640 (LWP 325) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 8 (Thread 0x7f5ed0083640 (LWP 321) "mariadbd"): #0 0x00007f5ed43ff560 in __lll_lock_wait () from /lib64/libc.so.6 #1 0x00007f5ed4405da4 in pthread_mutex_lock@@GLIBC_2.2.5 () from /lib64/libc.so.6 #2 0x000055d55aaf1dd3 in mtr_t::commit() () #3 0x000055d55ab30265 in row_ins_clust_index_entry_low(unsigned long, btr_latch_mode, dict_index_t*, unsigned long, dtuple_t*, unsigned long, que_thr_t*) () #4 0x000055d55ab34f2d in row_ins_clust_index_entry(dict_index_t*, dtuple_t*, que_thr_t*, unsigned long) () #5 0x000055d55ab3553c in row_ins_step(que_thr_t*) () #6 0x000055d55ab47561 in row_insert_for_mysql(unsigned char const*, row_prebuilt_t*, ins_mode_t) () #7 0x000055d55aa97037 in ha_innobase::write_row(unsigned char const*) () #8 0x000055d55a7c2678 in handler::ha_write_row(unsigned char const*) () #9 0x000055d55a5ffaee in copy_data_between_tables(THD*, TABLE*, TABLE*, bool, unsigned int, st_order*, unsigned long long*, unsigned long long*, Alter_info*, Alter_table_ctx*, bool, unsigned long long) [clone .constprop.0] () #10 0x000055d55a605517 in mysql_alter_table(THD*, st_mysql_const_lex_string const*, st_mysql_const_lex_string const*, Table_specification_st*, TABLE_LIST*, Recreate_info*, Alter_info*, unsigned int, st_order*, bool, bool) () #11 0x000055d55a6720e0 in Sql_cmd_alter_table::execute(THD*) () #12 0x000055d55a542cc5 in mysql_execute_command(THD*, bool) () #13 0x000055d55a543c11 in mysql_parse(THD*, char*, unsigned int, Parser_state*) () #14 0x000055d55a5465f5 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool) () #15 0x000055d55a548244 in do_command(THD*, bool) () #16 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #17 0x000055d55a66d3dd in handle_one_connection () #18 0x000055d55a9d7962 in pfs_spawn_thread () #19 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #20 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 7 (Thread 0x7f5ed00ce640 (LWP 236) "mariadbd"): #0 0x00007f5ed43b8b0a in sigtimedwait () from /lib64/libc.so.6 #1 0x000055d55a4327bb in signal_hand () #2 0x000055d55a9d7962 in pfs_spawn_thread () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 6 (Thread 0x7f5ed0119640 (LWP 235) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ba0 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a532810 in handle_manager () #3 0x000055d55a9d7962 in pfs_spawn_thread () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 5 (Thread 0x7f5ed0b25640 (LWP 232) "mariadbd"): #0 0x000055d55abd83fd in buf_flush_page_cleaner() () #1 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #2 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #3 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 4 (Thread 0x7f5ed1326640 (LWP 228) "mariadbd"): #0 0x00007f5ed43a1e5d in syscall () from /lib64/libc.so.6 #1 0x000055d55ac67069 in tpool::aio_linux::getevent_thread_routine(tpool::aio_linux*) () #2 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 3 (Thread 0x7f5ed1f49640 (LWP 227) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a96c280 in my_service_thread_sleep () #3 0x000055d55a9645de in ma_checkpoint_background () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 2 (Thread 0x7f5ed3edc640 (LWP 226) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55acd285f in timer_handler () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 1 (Thread 0x7f5ed401d900 (LWP 206) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a43ae0b in handle_connections_sockets() () #2 0x000055d55a43c0f5 in mysqld_main(int, char**) () #3 0x00007f5ed43a2eb0 in __libc_start_call_main () from /lib64/libc.so.6 #4 0x00007f5ed43a2f60 in __libc_start_main_impl () from /lib64/libc.so.6 #5 0x000055d55a42fc75 in _start () [Inferior 1 (process 206) detached] [New LWP 226] [New LWP 227] [New LWP 228] [New LWP 232] [New LWP 235] [New LWP 236] [New LWP 321] [New LWP 325] [New LWP 331] [New LWP 17926] [New LWP 17958] [New LWP 21015] [New LWP 22225] [New LWP 23488] [New LWP 23918] [New LWP 23919] [New LWP 23920] [New LWP 23921] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 Thread 19 (Thread 0x7f5ebd314640 (LWP 23921) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 18 (Thread 0x7f032e353640 (LWP 23920) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 17 (Thread 0x7f032d351640 (LWP 23919) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 16 (Thread 0x7f0317fff640 (LWP 23918) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 15 (Thread 0x7f5ebcb13640 (LWP 23488) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 14 (Thread 0x7f03167fc640 (LWP 22225) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 13 (Thread 0x7f032f355640 (LWP 21015) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 12 (Thread 0x7f032db52640 (LWP 17958) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 11 (Thread 0x7f5ebdb15640 (LWP 17926) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 10 (Thread 0x7f5ebc2c7640 (LWP 331) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 9 (Thread 0x7f5ebc312640 (LWP 325) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 8 (Thread 0x7f5ed0083640 (LWP 321) "mariadbd"): #0 0x000055d55aafba06 in page_cur_insert_rec_low(page_cur_t const*, unsigned char const*, unsigned short*, mtr_t*) () #1 0x000055d55abb93e1 in btr_cur_optimistic_insert(unsigned long, btr_cur_t*, unsigned short**, mem_block_info_t**, dtuple_t*, unsigned char**, big_rec_t**, unsigned long, que_thr_t*, mtr_t*) () #2 0x000055d55ab3248d in row_ins_sec_index_entry_low(unsigned long, btr_latch_mode, dict_index_t*, mem_block_info_t*, mem_block_info_t*, dtuple_t*, unsigned long, que_thr_t*) () #3 0x000055d55ab35038 in row_ins_sec_index_entry(dict_index_t*, dtuple_t*, que_thr_t*, bool) () #4 0x000055d55ab356d5 in row_ins_step(que_thr_t*) () #5 0x000055d55ab47561 in row_insert_for_mysql(unsigned char const*, row_prebuilt_t*, ins_mode_t) () #6 0x000055d55aa97037 in ha_innobase::write_row(unsigned char const*) () #7 0x000055d55a7c2678 in handler::ha_write_row(unsigned char const*) () #8 0x000055d55a5ffaee in copy_data_between_tables(THD*, TABLE*, TABLE*, bool, unsigned int, st_order*, unsigned long long*, unsigned long long*, Alter_info*, Alter_table_ctx*, bool, unsigned long long) [clone .constprop.0] () #9 0x000055d55a605517 in mysql_alter_table(THD*, st_mysql_const_lex_string const*, st_mysql_const_lex_string const*, Table_specification_st*, TABLE_LIST*, Recreate_info*, Alter_info*, unsigned int, st_order*, bool, bool) () #10 0x000055d55a6720e0 in Sql_cmd_alter_table::execute(THD*) () #11 0x000055d55a542cc5 in mysql_execute_command(THD*, bool) () #12 0x000055d55a543c11 in mysql_parse(THD*, char*, unsigned int, Parser_state*) () #13 0x000055d55a5465f5 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool) () #14 0x000055d55a548244 in do_command(THD*, bool) () #15 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #16 0x000055d55a66d3dd in handle_one_connection () #17 0x000055d55a9d7962 in pfs_spawn_thread () #18 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #19 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 7 (Thread 0x7f5ed00ce640 (LWP 236) "mariadbd"): #0 0x00007f5ed43b8b0a in sigtimedwait () from /lib64/libc.so.6 #1 0x000055d55a4327bb in signal_hand () #2 0x000055d55a9d7962 in pfs_spawn_thread () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 6 (Thread 0x7f5ed0119640 (LWP 235) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ba0 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a532810 in handle_manager () #3 0x000055d55a9d7962 in pfs_spawn_thread () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 5 (Thread 0x7f5ed0b25640 (LWP 232) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55abd79b7 in buf_flush_page_cleaner() () #3 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 4 (Thread 0x7f5ed1326640 (LWP 228) "mariadbd"): #0 0x00007f5ed43a1e5d in syscall () from /lib64/libc.so.6 #1 0x000055d55ac67069 in tpool::aio_linux::getevent_thread_routine(tpool::aio_linux*) () #2 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 3 (Thread 0x7f5ed1f49640 (LWP 227) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a96c280 in my_service_thread_sleep () #3 0x000055d55a9645de in ma_checkpoint_background () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 2 (Thread 0x7f5ed3edc640 (LWP 226) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55acd285f in timer_handler () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 1 (Thread 0x7f5ed401d900 (LWP 206) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a43ae0b in handle_connections_sockets() () #2 0x000055d55a43c0f5 in mysqld_main(int, char**) () #3 0x00007f5ed43a2eb0 in __libc_start_call_main () from /lib64/libc.so.6 #4 0x00007f5ed43a2f60 in __libc_start_main_impl () from /lib64/libc.so.6 #5 0x000055d55a42fc75 in _start () [Inferior 1 (process 206) detached] [New LWP 226] [New LWP 227] [New LWP 228] [New LWP 232] [New LWP 235] [New LWP 236] [New LWP 321] [New LWP 325] [New LWP 331] [New LWP 17926] [New LWP 21015] [New LWP 22225] [New LWP 23488] [New LWP 23918] [New LWP 23919] [New LWP 23920] [New LWP 23921] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 Thread 18 (Thread 0x7f5ebd314640 (LWP 23921) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 17 (Thread 0x7f032e353640 (LWP 23920) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 16 (Thread 0x7f032d351640 (LWP 23919) "mariadbd"): #0 0x00007f5ed43a1e5d in syscall () from /lib64/libc.so.6 #1 0x000055d55ab733d8 in ssux_lock_impl::wr_wait(unsigned int) () #2 0x000055d55aad54ac in log_write_up_to(unsigned long, bool, completion_callback const*) () #3 0x000055d55ab70cca in srv_master_callback () #4 0x000055d55ac65f20 in tpool::thread_pool_generic::timer_generic::execute(void*) () #5 0x000055d55ac66982 in tpool::task::execute() () #6 0x000055d55ac64b1f in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #7 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #8 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #9 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 15 (Thread 0x7f0317fff640 (LWP 23918) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 14 (Thread 0x7f5ebcb13640 (LWP 23488) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 13 (Thread 0x7f03167fc640 (LWP 22225) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 12 (Thread 0x7f032f355640 (LWP 21015) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 11 (Thread 0x7f5ebdb15640 (LWP 17926) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 10 (Thread 0x7f5ebc2c7640 (LWP 331) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 9 (Thread 0x7f5ebc312640 (LWP 325) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 8 (Thread 0x7f5ed0083640 (LWP 321) "mariadbd"): #0 0x00007f5ed43ff560 in __lll_lock_wait () from /lib64/libc.so.6 #1 0x00007f5ed4405da4 in pthread_mutex_lock@@GLIBC_2.2.5 () from /lib64/libc.so.6 #2 0x000055d55aaf1dd3 in mtr_t::commit() () #3 0x000055d55ab30265 in row_ins_clust_index_entry_low(unsigned long, btr_latch_mode, dict_index_t*, unsigned long, dtuple_t*, unsigned long, que_thr_t*) () #4 0x000055d55ab34f2d in row_ins_clust_index_entry(dict_index_t*, dtuple_t*, que_thr_t*, unsigned long) () #5 0x000055d55ab3553c in row_ins_step(que_thr_t*) () #6 0x000055d55ab47561 in row_insert_for_mysql(unsigned char const*, row_prebuilt_t*, ins_mode_t) () #7 0x000055d55aa97037 in ha_innobase::write_row(unsigned char const*) () #8 0x000055d55a7c2678 in handler::ha_write_row(unsigned char const*) () #9 0x000055d55a5ffaee in copy_data_between_tables(THD*, TABLE*, TABLE*, bool, unsigned int, st_order*, unsigned long long*, unsigned long long*, Alter_info*, Alter_table_ctx*, bool, unsigned long long) [clone .constprop.0] () #10 0x000055d55a605517 in mysql_alter_table(THD*, st_mysql_const_lex_string const*, st_mysql_const_lex_string const*, Table_specification_st*, TABLE_LIST*, Recreate_info*, Alter_info*, unsigned int, st_order*, bool, bool) () #11 0x000055d55a6720e0 in Sql_cmd_alter_table::execute(THD*) () #12 0x000055d55a542cc5 in mysql_execute_command(THD*, bool) () #13 0x000055d55a543c11 in mysql_parse(THD*, char*, unsigned int, Parser_state*) () #14 0x000055d55a5465f5 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool) () #15 0x000055d55a548244 in do_command(THD*, bool) () #16 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #17 0x000055d55a66d3dd in handle_one_connection () #18 0x000055d55a9d7962 in pfs_spawn_thread () #19 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #20 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 7 (Thread 0x7f5ed00ce640 (LWP 236) "mariadbd"): #0 0x00007f5ed43b8b0a in sigtimedwait () from /lib64/libc.so.6 #1 0x000055d55a4327bb in signal_hand () #2 0x000055d55a9d7962 in pfs_spawn_thread () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 6 (Thread 0x7f5ed0119640 (LWP 235) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ba0 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a532810 in handle_manager () #3 0x000055d55a9d7962 in pfs_spawn_thread () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 5 (Thread 0x7f5ed0b25640 (LWP 232) "mariadbd"): #0 0x000055d55abd83fd in buf_flush_page_cleaner() () #1 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #2 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #3 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 4 (Thread 0x7f5ed1326640 (LWP 228) "mariadbd"): #0 0x00007f5ed43a1e5d in syscall () from /lib64/libc.so.6 #1 0x000055d55ac67069 in tpool::aio_linux::getevent_thread_routine(tpool::aio_linux*) () #2 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 3 (Thread 0x7f5ed1f49640 (LWP 227) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a96c280 in my_service_thread_sleep () #3 0x000055d55a9645de in ma_checkpoint_background () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 2 (Thread 0x7f5ed3edc640 (LWP 226) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55acd285f in timer_handler () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 1 (Thread 0x7f5ed401d900 (LWP 206) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a43ae0b in handle_connections_sockets() () #2 0x000055d55a43c0f5 in mysqld_main(int, char**) () #3 0x00007f5ed43a2eb0 in __libc_start_call_main () from /lib64/libc.so.6 #4 0x00007f5ed43a2f60 in __libc_start_main_impl () from /lib64/libc.so.6 #5 0x000055d55a42fc75 in _start () [Inferior 1 (process 206) detached] [New LWP 226] [New LWP 227] [New LWP 228] [New LWP 232] [New LWP 235] [New LWP 236] [New LWP 321] [New LWP 325] [New LWP 331] [New LWP 17926] [New LWP 21015] [New LWP 22225] [New LWP 23488] [New LWP 23918] [New LWP 23919] [New LWP 23920] [New LWP 23921] [New LWP 226] [New LWP 227] [New LWP 228] [New LWP 232] [New LWP 235] [New LWP 236] [New LWP 321] [New LWP 325] [New LWP 331] [New LWP 22225] [New LWP 23488] [New LWP 23919] [New LWP 23920] [New LWP 23921] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 Thread 15 (Thread 0x7f5ebd314640 (LWP 23921) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 14 (Thread 0x7f032e353640 (LWP 23920) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 13 (Thread 0x7f032d351640 (LWP 23919) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 12 (Thread 0x7f5ebcb13640 (LWP 23488) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 11 (Thread 0x7f03167fc640 (LWP 22225) "mariadbd"): #0 0x00007f5ed43a1e5d in syscall () from /lib64/libc.so.6 #1 0x000055d55ab733d8 in ssux_lock_impl::wr_wait(unsigned int) () #2 0x000055d55aad54ac in log_write_up_to(unsigned long, bool, completion_callback const*) () #3 0x000055d55ab70cca in srv_master_callback () #4 0x000055d55ac65f20 in tpool::thread_pool_generic::timer_generic::execute(void*) () #5 0x000055d55ac66982 in tpool::task::execute() () #6 0x000055d55ac64b1f in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #7 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #8 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #9 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 10 (Thread 0x7f5ebc2c7640 (LWP 331) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 9 (Thread 0x7f5ebc312640 (LWP 325) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 8 (Thread 0x7f5ed0083640 (LWP 321) "mariadbd"): #0 0x00007f5ed43ff560 in __lll_lock_wait () from /lib64/libc.so.6 #1 0x00007f5ed4405da4 in pthread_mutex_lock@@GLIBC_2.2.5 () from /lib64/libc.so.6 #2 0x000055d55aaf1dd3 in mtr_t::commit() () #3 0x000055d55ab30265 in row_ins_clust_index_entry_low(unsigned long, btr_latch_mode, dict_index_t*, unsigned long, dtuple_t*, unsigned long, que_thr_t*) () #4 0x000055d55ab34f2d in row_ins_clust_index_entry(dict_index_t*, dtuple_t*, que_thr_t*, unsigned long) () #5 0x000055d55ab3553c in row_ins_step(que_thr_t*) () #6 0x000055d55ab47561 in row_insert_for_mysql(unsigned char const*, row_prebuilt_t*, ins_mode_t) () #7 0x000055d55aa97037 in ha_innobase::write_row(unsigned char const*) () #8 0x000055d55a7c2678 in handler::ha_write_row(unsigned char const*) () #9 0x000055d55a5ffaee in copy_data_between_tables(THD*, TABLE*, TABLE*, bool, unsigned int, st_order*, unsigned long long*, unsigned long long*, Alter_info*, Alter_table_ctx*, bool, unsigned long long) [clone .constprop.0] () #10 0x000055d55a605517 in mysql_alter_table(THD*, st_mysql_const_lex_string const*, st_mysql_const_lex_string const*, Table_specification_st*, TABLE_LIST*, Recreate_info*, Alter_info*, unsigned int, st_order*, bool, bool) () #11 0x000055d55a6720e0 in Sql_cmd_alter_table::execute(THD*) () #12 0x000055d55a542cc5 in mysql_execute_command(THD*, bool) () #13 0x000055d55a543c11 in mysql_parse(THD*, char*, unsigned int, Parser_state*) () #14 0x000055d55a5465f5 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool) () #15 0x000055d55a548244 in do_command(THD*, bool) () #16 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #17 0x000055d55a66d3dd in handle_one_connection () #18 0x000055d55a9d7962 in pfs_spawn_thread () #19 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #20 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 7 (Thread 0x7f5ed00ce640 (LWP 236) "mariadbd"): #0 0x00007f5ed43b8b0a in sigtimedwait () from /lib64/libc.so.6 #1 0x000055d55a4327bb in signal_hand () #2 0x000055d55a9d7962 in pfs_spawn_thread () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 6 (Thread 0x7f5ed0119640 (LWP 235) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ba0 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a532810 in handle_manager () #3 0x000055d55a9d7962 in pfs_spawn_thread () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 5 (Thread 0x7f5ed0b25640 (LWP 232) "mariadbd"): #0 0x000055d55abd83fd in buf_flush_page_cleaner() () #1 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #2 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #3 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 4 (Thread 0x7f5ed1326640 (LWP 228) "mariadbd"): #0 0x00007f5ed43a1e5d in syscall () from /lib64/libc.so.6 #1 0x000055d55ac67069 in tpool::aio_linux::getevent_thread_routine(tpool::aio_linux*) () #2 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 3 (Thread 0x7f5ed1f49640 (LWP 227) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a96c280 in my_service_thread_sleep () #3 0x000055d55a9645de in ma_checkpoint_background () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 2 (Thread 0x7f5ed3edc640 (LWP 226) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55acd285f in timer_handler () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 1 (Thread 0x7f5ed401d900 (LWP 206) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a43ae0b in handle_connections_sockets() () #2 0x000055d55a43c0f5 in mysqld_main(int, char**) () #3 0x00007f5ed43a2eb0 in __libc_start_call_main () from /lib64/libc.so.6 #4 0x00007f5ed43a2f60 in __libc_start_main_impl () from /lib64/libc.so.6 #5 0x000055d55a42fc75 in _start () [Inferior 1 (process 206) detached] [New LWP 226] [New LWP 227] [New LWP 228] [New LWP 232] [New LWP 235] [New LWP 236] [New LWP 321] [New LWP 325] [New LWP 331] [New LWP 22225] [New LWP 23488] [New LWP 23919] [New LWP 23920] [New LWP 23921] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 Thread 15 (Thread 0x7f5ebd314640 (LWP 23921) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 14 (Thread 0x7f032e353640 (LWP 23920) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 13 (Thread 0x7f032d351640 (LWP 23919) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 12 (Thread 0x7f5ebcb13640 (LWP 23488) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 11 (Thread 0x7f03167fc640 (LWP 22225) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 10 (Thread 0x7f5ebc2c7640 (LWP 331) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 9 (Thread 0x7f5ebc312640 (LWP 325) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 8 (Thread 0x7f5ed0083640 (LWP 321) "mariadbd"): #0 0x000055d55abb733b in btr_cur_t::search_leaf(dtuple_t const*, page_cur_mode_t, btr_latch_mode, mtr_t*) () #1 0x000055d55ab31866 in row_ins_sec_index_entry_low(unsigned long, btr_latch_mode, dict_index_t*, mem_block_info_t*, mem_block_info_t*, dtuple_t*, unsigned long, que_thr_t*) () #2 0x000055d55ab35038 in row_ins_sec_index_entry(dict_index_t*, dtuple_t*, que_thr_t*, bool) () #3 0x000055d55ab356d5 in row_ins_step(que_thr_t*) () #4 0x000055d55ab47561 in row_insert_for_mysql(unsigned char const*, row_prebuilt_t*, ins_mode_t) () #5 0x000055d55aa97037 in ha_innobase::write_row(unsigned char const*) () #6 0x000055d55a7c2678 in handler::ha_write_row(unsigned char const*) () #7 0x000055d55a5ffaee in copy_data_between_tables(THD*, TABLE*, TABLE*, bool, unsigned int, st_order*, unsigned long long*, unsigned long long*, Alter_info*, Alter_table_ctx*, bool, unsigned long long) [clone .constprop.0] () #8 0x000055d55a605517 in mysql_alter_table(THD*, st_mysql_const_lex_string const*, st_mysql_const_lex_string const*, Table_specification_st*, TABLE_LIST*, Recreate_info*, Alter_info*, unsigned int, st_order*, bool, bool) () #9 0x000055d55a6720e0 in Sql_cmd_alter_table::execute(THD*) () #10 0x000055d55a542cc5 in mysql_execute_command(THD*, bool) () #11 0x000055d55a543c11 in mysql_parse(THD*, char*, unsigned int, Parser_state*) () #12 0x000055d55a5465f5 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool) () #13 0x000055d55a548244 in do_command(THD*, bool) () #14 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #15 0x000055d55a66d3dd in handle_one_connection () #16 0x000055d55a9d7962 in pfs_spawn_thread () #17 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #18 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 7 (Thread 0x7f5ed00ce640 (LWP 236) "mariadbd"): #0 0x00007f5ed43b8b0a in sigtimedwait () from /lib64/libc.so.6 #1 0x000055d55a4327bb in signal_hand () #2 0x000055d55a9d7962 in pfs_spawn_thread () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 6 (Thread 0x7f5ed0119640 (LWP 235) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ba0 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a532810 in handle_manager () #3 0x000055d55a9d7962 in pfs_spawn_thread () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 5 (Thread 0x7f5ed0b25640 (LWP 232) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55abd79b7 in buf_flush_page_cleaner() () #3 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 4 (Thread 0x7f5ed1326640 (LWP 228) "mariadbd"): #0 0x00007f5ed43a1e5d in syscall () from /lib64/libc.so.6 #1 0x000055d55ac67069 in tpool::aio_linux::getevent_thread_routine(tpool::aio_linux*) () #2 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 3 (Thread 0x7f5ed1f49640 (LWP 227) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a96c280 in my_service_thread_sleep () #3 0x000055d55a9645de in ma_checkpoint_background () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 2 (Thread 0x7f5ed3edc640 (LWP 226) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55acd285f in timer_handler () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 1 (Thread 0x7f5ed401d900 (LWP 206) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a43ae0b in handle_connections_sockets() () #2 0x000055d55a43c0f5 in mysqld_main(int, char**) () #3 0x00007f5ed43a2eb0 in __libc_start_call_main () from /lib64/libc.so.6 #4 0x00007f5ed43a2f60 in __libc_start_main_impl () from /lib64/libc.so.6 #5 0x000055d55a42fc75 in _start () [Inferior 1 (process 206) detached] [New LWP 226] [New LWP 227] [New LWP 228] [New LWP 232] [New LWP 235] [New LWP 236] [New LWP 321] [New LWP 325] [New LWP 331] [New LWP 22225] [New LWP 23488] [New LWP 23919] [New LWP 23920] [New LWP 23921] [New LWP 24974] [New LWP 24975] [New LWP 24976] [New LWP 24977] [New LWP 24978] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 Thread 20 (Thread 0x7f032eb54640 (LWP 24978) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 19 (Thread 0x7f032db52640 (LWP 24977) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 18 (Thread 0x7f0317fff640 (LWP 24976) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 17 (Thread 0x7f032f355640 (LWP 24975) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 16 (Thread 0x7f5ebdb15640 (LWP 24974) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 15 (Thread 0x7f5ebd314640 (LWP 23921) "mariadbd"): #0 0x00007f5ed43a1e5d in syscall () from /lib64/libc.so.6 #1 0x000055d55ab733d8 in ssux_lock_impl::wr_wait(unsigned int) () #2 0x000055d55aad54ac in log_write_up_to(unsigned long, bool, completion_callback const*) () #3 0x000055d55ab70cca in srv_master_callback () #4 0x000055d55ac65f20 in tpool::thread_pool_generic::timer_generic::execute(void*) () #5 0x000055d55ac66982 in tpool::task::execute() () #6 0x000055d55ac64b1f in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #7 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #8 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #9 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 14 (Thread 0x7f032e353640 (LWP 23920) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 13 (Thread 0x7f032d351640 (LWP 23919) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 12 (Thread 0x7f5ebcb13640 (LWP 23488) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 11 (Thread 0x7f03167fc640 (LWP 22225) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 10 (Thread 0x7f5ebc2c7640 (LWP 331) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 9 (Thread 0x7f5ebc312640 (LWP 325) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 8 (Thread 0x7f5ed0083640 (LWP 321) "mariadbd"): #0 0x00007f5ed43ff560 in __lll_lock_wait () from /lib64/libc.so.6 #1 0x00007f5ed4405da4 in pthread_mutex_lock@@GLIBC_2.2.5 () from /lib64/libc.so.6 #2 0x000055d55aaf1dd3 in mtr_t::commit() () #3 0x000055d55ab30265 in row_ins_clust_index_entry_low(unsigned long, btr_latch_mode, dict_index_t*, unsigned long, dtuple_t*, unsigned long, que_thr_t*) () #4 0x000055d55ab34f2d in row_ins_clust_index_entry(dict_index_t*, dtuple_t*, que_thr_t*, unsigned long) () #5 0x000055d55ab3553c in row_ins_step(que_thr_t*) () #6 0x000055d55ab47561 in row_insert_for_mysql(unsigned char const*, row_prebuilt_t*, ins_mode_t) () #7 0x000055d55aa97037 in ha_innobase::write_row(unsigned char const*) () #8 0x000055d55a7c2678 in handler::ha_write_row(unsigned char const*) () #9 0x000055d55a5ffaee in copy_data_between_tables(THD*, TABLE*, TABLE*, bool, unsigned int, st_order*, unsigned long long*, unsigned long long*, Alter_info*, Alter_table_ctx*, bool, unsigned long long) [clone .constprop.0] () #10 0x000055d55a605517 in mysql_alter_table(THD*, st_mysql_const_lex_string const*, st_mysql_const_lex_string const*, Table_specification_st*, TABLE_LIST*, Recreate_info*, Alter_info*, unsigned int, st_order*, bool, bool) () #11 0x000055d55a6720e0 in Sql_cmd_alter_table::execute(THD*) () #12 0x000055d55a542cc5 in mysql_execute_command(THD*, bool) () #13 0x000055d55a543c11 in mysql_parse(THD*, char*, unsigned int, Parser_state*) () #14 0x000055d55a5465f5 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool) () #15 0x000055d55a548244 in do_command(THD*, bool) () #16 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #17 0x000055d55a66d3dd in handle_one_connection () #18 0x000055d55a9d7962 in pfs_spawn_thread () #19 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #20 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 7 (Thread 0x7f5ed00ce640 (LWP 236) "mariadbd"): #0 0x00007f5ed43b8b0a in sigtimedwait () from /lib64/libc.so.6 #1 0x000055d55a4327bb in signal_hand () #2 0x000055d55a9d7962 in pfs_spawn_thread () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 6 (Thread 0x7f5ed0119640 (LWP 235) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ba0 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a532810 in handle_manager () #3 0x000055d55a9d7962 in pfs_spawn_thread () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 5 (Thread 0x7f5ed0b25640 (LWP 232) "mariadbd"): #0 0x000055d55abd83fd in buf_flush_page_cleaner() () #1 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #2 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #3 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 4 (Thread 0x7f5ed1326640 (LWP 228) "mariadbd"): #0 0x00007f5ed43a1e5d in syscall () from /lib64/libc.so.6 #1 0x000055d55ac67069 in tpool::aio_linux::getevent_thread_routine(tpool::aio_linux*) () #2 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 3 (Thread 0x7f5ed1f49640 (LWP 227) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a96c280 in my_service_thread_sleep () #3 0x000055d55a9645de in ma_checkpoint_background () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 2 (Thread 0x7f5ed3edc640 (LWP 226) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55acd285f in timer_handler () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 1 (Thread 0x7f5ed401d900 (LWP 206) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a43ae0b in handle_connections_sockets() () #2 0x000055d55a43c0f5 in mysqld_main(int, char**) () #3 0x00007f5ed43a2eb0 in __libc_start_call_main () from /lib64/libc.so.6 #4 0x00007f5ed43a2f60 in __libc_start_main_impl () from /lib64/libc.so.6 #5 0x000055d55a42fc75 in _start () [Inferior 1 (process 206) detached] [New LWP 226] [New LWP 227] [New LWP 228] [New LWP 232] [New LWP 235] [New LWP 236] [New LWP 321] [New LWP 325] [New LWP 331] [New LWP 22225] [New LWP 23488] [New LWP 23919] [New LWP 23920] [New LWP 23921] [New LWP 24974] [New LWP 24975] [New LWP 24976] [New LWP 24977] [New LWP 24978] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 Thread 20 (Thread 0x7f032eb54640 (LWP 24978) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 19 (Thread 0x7f032db52640 (LWP 24977) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 18 (Thread 0x7f0317fff640 (LWP 24976) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 17 (Thread 0x7f032f355640 (LWP 24975) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 16 (Thread 0x7f5ebdb15640 (LWP 24974) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 15 (Thread 0x7f5ebd314640 (LWP 23921) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 14 (Thread 0x7f032e353640 (LWP 23920) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 13 (Thread 0x7f032d351640 (LWP 23919) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 12 (Thread 0x7f5ebcb13640 (LWP 23488) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 11 (Thread 0x7f03167fc640 (LWP 22225) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 10 (Thread 0x7f5ebc2c7640 (LWP 331) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 9 (Thread 0x7f5ebc312640 (LWP 325) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 8 (Thread 0x7f5ed0083640 (LWP 321) "mariadbd"): #0 0x000055d55ab1ccf8 in rec_get_offsets_func(unsigned char const*, dict_index_t const*, unsigned short*, unsigned long, unsigned long, mem_block_info_t**) () #1 0x000055d55aaf8e05 in page_cur_search_with_match(dtuple_t const*, page_cur_mode_t, unsigned long*, unsigned long*, page_cur_t*, rtr_info*) () #2 0x000055d55abb77ff in btr_cur_t::search_leaf(dtuple_t const*, page_cur_mode_t, btr_latch_mode, mtr_t*) () #3 0x000055d55ab31866 in row_ins_sec_index_entry_low(unsigned long, btr_latch_mode, dict_index_t*, mem_block_info_t*, mem_block_info_t*, dtuple_t*, unsigned long, que_thr_t*) () #4 0x000055d55ab35038 in row_ins_sec_index_entry(dict_index_t*, dtuple_t*, que_thr_t*, bool) () #5 0x000055d55ab356d5 in row_ins_step(que_thr_t*) () #6 0x000055d55ab47561 in row_insert_for_mysql(unsigned char const*, row_prebuilt_t*, ins_mode_t) () #7 0x000055d55aa97037 in ha_innobase::write_row(unsigned char const*) () #8 0x000055d55a7c2678 in handler::ha_write_row(unsigned char const*) () #9 0x000055d55a5ffaee in copy_data_between_tables(THD*, TABLE*, TABLE*, bool, unsigned int, st_order*, unsigned long long*, unsigned long long*, Alter_info*, Alter_table_ctx*, bool, unsigned long long) [clone .constprop.0] () #10 0x000055d55a605517 in mysql_alter_table(THD*, st_mysql_const_lex_string const*, st_mysql_const_lex_string const*, Table_specification_st*, TABLE_LIST*, Recreate_info*, Alter_info*, unsigned int, st_order*, bool, bool) () #11 0x000055d55a6720e0 in Sql_cmd_alter_table::execute(THD*) () #12 0x000055d55a542cc5 in mysql_execute_command(THD*, bool) () #13 0x000055d55a543c11 in mysql_parse(THD*, char*, unsigned int, Parser_state*) () #14 0x000055d55a5465f5 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool) () #15 0x000055d55a548244 in do_command(THD*, bool) () #16 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #17 0x000055d55a66d3dd in handle_one_connection () #18 0x000055d55a9d7962 in pfs_spawn_thread () #19 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #20 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 7 (Thread 0x7f5ed00ce640 (LWP 236) "mariadbd"): #0 0x00007f5ed43b8b0a in sigtimedwait () from /lib64/libc.so.6 #1 0x000055d55a4327bb in signal_hand () #2 0x000055d55a9d7962 in pfs_spawn_thread () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 6 (Thread 0x7f5ed0119640 (LWP 235) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ba0 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a532810 in handle_manager () #3 0x000055d55a9d7962 in pfs_spawn_thread () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 5 (Thread 0x7f5ed0b25640 (LWP 232) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55abd79b7 in buf_flush_page_cleaner() () #3 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 4 (Thread 0x7f5ed1326640 (LWP 228) "mariadbd"): #0 0x00007f5ed43a1e5d in syscall () from /lib64/libc.so.6 #1 0x000055d55ac67069 in tpool::aio_linux::getevent_thread_routine(tpool::aio_linux*) () #2 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 3 (Thread 0x7f5ed1f49640 (LWP 227) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a96c280 in my_service_thread_sleep () #3 0x000055d55a9645de in ma_checkpoint_background () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 2 (Thread 0x7f5ed3edc640 (LWP 226) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55acd285f in timer_handler () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 1 (Thread 0x7f5ed401d900 (LWP 206) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a43ae0b in handle_connections_sockets() () #2 0x000055d55a43c0f5 in mysqld_main(int, char**) () #3 0x00007f5ed43a2eb0 in __libc_start_call_main () from /lib64/libc.so.6 #4 0x00007f5ed43a2f60 in __libc_start_main_impl () from /lib64/libc.so.6 #5 0x000055d55a42fc75 in _start () [Inferior 1 (process 206) detached] [New LWP 226] [New LWP 227] [New LWP 228] [New LWP 232] [New LWP 235] [New LWP 236] [New LWP 321] [New LWP 325] [New LWP 331] [New LWP 22225] [New LWP 23488] [New LWP 23919] [New LWP 23920] [New LWP 23921] [New LWP 24974] [New LWP 24975] [New LWP 24976] [New LWP 24977] [New LWP 24978] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 Thread 20 (Thread 0x7f032eb54640 (LWP 24978) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 19 (Thread 0x7f032db52640 (LWP 24977) "mariadbd"): #0 0x00007f5ed43a1e5d in syscall () from /lib64/libc.so.6 #1 0x000055d55ab733d8 in ssux_lock_impl::wr_wait(unsigned int) () #2 0x000055d55aad54ac in log_write_up_to(unsigned long, bool, completion_callback const*) () #3 0x000055d55ab70cca in srv_master_callback () #4 0x000055d55ac65f20 in tpool::thread_pool_generic::timer_generic::execute(void*) () #5 0x000055d55ac66982 in tpool::task::execute() () #6 0x000055d55ac64b1f in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #7 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #8 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #9 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 18 (Thread 0x7f0317fff640 (LWP 24976) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 17 (Thread 0x7f032f355640 (LWP 24975) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 16 (Thread 0x7f5ebdb15640 (LWP 24974) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 15 (Thread 0x7f5ebd314640 (LWP 23921) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 14 (Thread 0x7f032e353640 (LWP 23920) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 13 (Thread 0x7f032d351640 (LWP 23919) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 12 (Thread 0x7f5ebcb13640 (LWP 23488) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 11 (Thread 0x7f03167fc640 (LWP 22225) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 10 (Thread 0x7f5ebc2c7640 (LWP 331) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 9 (Thread 0x7f5ebc312640 (LWP 325) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 8 (Thread 0x7f5ed0083640 (LWP 321) "mariadbd"): #0 0x00007f5ed43ff560 in __lll_lock_wait () from /lib64/libc.so.6 #1 0x00007f5ed4405da4 in pthread_mutex_lock@@GLIBC_2.2.5 () from /lib64/libc.so.6 #2 0x000055d55aaf1dd3 in mtr_t::commit() () #3 0x000055d55ab30265 in row_ins_clust_index_entry_low(unsigned long, btr_latch_mode, dict_index_t*, unsigned long, dtuple_t*, unsigned long, que_thr_t*) () #4 0x000055d55ab34f2d in row_ins_clust_index_entry(dict_index_t*, dtuple_t*, que_thr_t*, unsigned long) () #5 0x000055d55ab3553c in row_ins_step(que_thr_t*) () #6 0x000055d55ab47561 in row_insert_for_mysql(unsigned char const*, row_prebuilt_t*, ins_mode_t) () #7 0x000055d55aa97037 in ha_innobase::write_row(unsigned char const*) () #8 0x000055d55a7c2678 in handler::ha_write_row(unsigned char const*) () #9 0x000055d55a5ffaee in copy_data_between_tables(THD*, TABLE*, TABLE*, bool, unsigned int, st_order*, unsigned long long*, unsigned long long*, Alter_info*, Alter_table_ctx*, bool, unsigned long long) [clone .constprop.0] () #10 0x000055d55a605517 in mysql_alter_table(THD*, st_mysql_const_lex_string const*, st_mysql_const_lex_string const*, Table_specification_st*, TABLE_LIST*, Recreate_info*, Alter_info*, unsigned int, st_order*, bool, bool) () #11 0x000055d55a6720e0 in Sql_cmd_alter_table::execute(THD*) () #12 0x000055d55a542cc5 in mysql_execute_command(THD*, bool) () #13 0x000055d55a543c11 in mysql_parse(THD*, char*, unsigned int, Parser_state*) () #14 0x000055d55a5465f5 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool) () #15 0x000055d55a548244 in do_command(THD*, bool) () #16 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #17 0x000055d55a66d3dd in handle_one_connection () #18 0x000055d55a9d7962 in pfs_spawn_thread () #19 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #20 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 7 (Thread 0x7f5ed00ce640 (LWP 236) "mariadbd"): #0 0x00007f5ed43b8b0a in sigtimedwait () from /lib64/libc.so.6 #1 0x000055d55a4327bb in signal_hand () #2 0x000055d55a9d7962 in pfs_spawn_thread () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 6 (Thread 0x7f5ed0119640 (LWP 235) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ba0 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a532810 in handle_manager () #3 0x000055d55a9d7962 in pfs_spawn_thread () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 5 (Thread 0x7f5ed0b25640 (LWP 232) "mariadbd"): #0 0x000055d55abd83fd in buf_flush_page_cleaner() () #1 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #2 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #3 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 4 (Thread 0x7f5ed1326640 (LWP 228) "mariadbd"): #0 0x00007f5ed43a1e5d in syscall () from /lib64/libc.so.6 #1 0x000055d55ac67069 in tpool::aio_linux::getevent_thread_routine(tpool::aio_linux*) () #2 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 3 (Thread 0x7f5ed1f49640 (LWP 227) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a96c280 in my_service_thread_sleep () #3 0x000055d55a9645de in ma_checkpoint_background () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 2 (Thread 0x7f5ed3edc640 (LWP 226) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55acd285f in timer_handler () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 1 (Thread 0x7f5ed401d900 (LWP 206) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a43ae0b in handle_connections_sockets() () #2 0x000055d55a43c0f5 in mysqld_main(int, char**) () #3 0x00007f5ed43a2eb0 in __libc_start_call_main () from /lib64/libc.so.6 #4 0x00007f5ed43a2f60 in __libc_start_main_impl () from /lib64/libc.so.6 #5 0x000055d55a42fc75 in _start () [Inferior 1 (process 206) detached] [New LWP 226] [New LWP 227] [New LWP 228] [New LWP 232] [New LWP 235] [New LWP 236] [New LWP 321] [New LWP 325] [New LWP 331] [New LWP 22225] [New LWP 23488] [New LWP 23919] [New LWP 23920] [New LWP 23921] [New LWP 24974] [New LWP 24975] [New LWP 24976] [New LWP 24977] [New LWP 24978] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 Thread 20 (Thread 0x7f032eb54640 (LWP 24978) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 19 (Thread 0x7f032db52640 (LWP 24977) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 18 (Thread 0x7f0317fff640 (LWP 24976) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 17 (Thread 0x7f032f355640 (LWP 24975) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 16 (Thread 0x7f5ebdb15640 (LWP 24974) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 15 (Thread 0x7f5ebd314640 (LWP 23921) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 14 (Thread 0x7f032e353640 (LWP 23920) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 13 (Thread 0x7f032d351640 (LWP 23919) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 12 (Thread 0x7f5ebcb13640 (LWP 23488) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 11 (Thread 0x7f03167fc640 (LWP 22225) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 10 (Thread 0x7f5ebc2c7640 (LWP 331) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 9 (Thread 0x7f5ebc312640 (LWP 325) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 8 (Thread 0x7f5ed0083640 (LWP 321) "mariadbd"): #0 0x000055d55a42ad3b in buf_page_get_low(page_id_t, unsigned long, unsigned long, buf_block_t*, unsigned long, mtr_t*, dberr_t*) () #1 0x000055d55abb7321 in btr_cur_t::search_leaf(dtuple_t const*, page_cur_mode_t, btr_latch_mode, mtr_t*) () #2 0x000055d55ab31866 in row_ins_sec_index_entry_low(unsigned long, btr_latch_mode, dict_index_t*, mem_block_info_t*, mem_block_info_t*, dtuple_t*, unsigned long, que_thr_t*) () #3 0x000055d55ab35038 in row_ins_sec_index_entry(dict_index_t*, dtuple_t*, que_thr_t*, bool) () #4 0x000055d55ab356d5 in row_ins_step(que_thr_t*) () #5 0x000055d55ab47561 in row_insert_for_mysql(unsigned char const*, row_prebuilt_t*, ins_mode_t) () #6 0x000055d55aa97037 in ha_innobase::write_row(unsigned char const*) () #7 0x000055d55a7c2678 in handler::ha_write_row(unsigned char const*) () #8 0x000055d55a5ffaee in copy_data_between_tables(THD*, TABLE*, TABLE*, bool, unsigned int, st_order*, unsigned long long*, unsigned long long*, Alter_info*, Alter_table_ctx*, bool, unsigned long long) [clone .constprop.0] () #9 0x000055d55a605517 in mysql_alter_table(THD*, st_mysql_const_lex_string const*, st_mysql_const_lex_string const*, Table_specification_st*, TABLE_LIST*, Recreate_info*, Alter_info*, unsigned int, st_order*, bool, bool) () #10 0x000055d55a6720e0 in Sql_cmd_alter_table::execute(THD*) () #11 0x000055d55a542cc5 in mysql_execute_command(THD*, bool) () #12 0x000055d55a543c11 in mysql_parse(THD*, char*, unsigned int, Parser_state*) () #13 0x000055d55a5465f5 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool) () #14 0x000055d55a548244 in do_command(THD*, bool) () #15 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #16 0x000055d55a66d3dd in handle_one_connection () #17 0x000055d55a9d7962 in pfs_spawn_thread () #18 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #19 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 7 (Thread 0x7f5ed00ce640 (LWP 236) "mariadbd"): #0 0x00007f5ed43b8b0a in sigtimedwait () from /lib64/libc.so.6 #1 0x000055d55a4327bb in signal_hand () #2 0x000055d55a9d7962 in pfs_spawn_thread () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 6 (Thread 0x7f5ed0119640 (LWP 235) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ba0 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a532810 in handle_manager () #3 0x000055d55a9d7962 in pfs_spawn_thread () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 5 (Thread 0x7f5ed0b25640 (LWP 232) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55abd79b7 in buf_flush_page_cleaner() () #3 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 4 (Thread 0x7f5ed1326640 (LWP 228) "mariadbd"): #0 0x00007f5ed43a1e5d in syscall () from /lib64/libc.so.6 #1 0x000055d55ac67069 in tpool::aio_linux::getevent_thread_routine(tpool::aio_linux*) () #2 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 3 (Thread 0x7f5ed1f49640 (LWP 227) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a96c280 in my_service_thread_sleep () #3 0x000055d55a9645de in ma_checkpoint_background () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 2 (Thread 0x7f5ed3edc640 (LWP 226) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55acd285f in timer_handler () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 1 (Thread 0x7f5ed401d900 (LWP 206) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a43ae0b in handle_connections_sockets() () #2 0x000055d55a43c0f5 in mysqld_main(int, char**) () #3 0x00007f5ed43a2eb0 in __libc_start_call_main () from /lib64/libc.so.6 #4 0x00007f5ed43a2f60 in __libc_start_main_impl () from /lib64/libc.so.6 #5 0x000055d55a42fc75 in _start () [Inferior 1 (process 206) detached] [New LWP 226] [New LWP 227] [New LWP 228] [New LWP 232] [New LWP 235] [New LWP 236] [New LWP 321] [New LWP 325] [New LWP 331] [New LWP 22225] [New LWP 23488] [New LWP 23919] [New LWP 23920] [New LWP 23921] [New LWP 24974] [New LWP 24975] [New LWP 24976] [New LWP 24977] [New LWP 24978] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 Thread 20 (Thread 0x7f032eb54640 (LWP 24978) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 19 (Thread 0x7f032db52640 (LWP 24977) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 18 (Thread 0x7f0317fff640 (LWP 24976) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 17 (Thread 0x7f032f355640 (LWP 24975) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 16 (Thread 0x7f5ebdb15640 (LWP 24974) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 15 (Thread 0x7f5ebd314640 (LWP 23921) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 14 (Thread 0x7f032e353640 (LWP 23920) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 13 (Thread 0x7f032d351640 (LWP 23919) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 12 (Thread 0x7f5ebcb13640 (LWP 23488) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 11 (Thread 0x7f03167fc640 (LWP 22225) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 10 (Thread 0x7f5ebc2c7640 (LWP 331) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 9 (Thread 0x7f5ebc312640 (LWP 325) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 8 (Thread 0x7f5ed0083640 (LWP 321) "mariadbd"): #0 0x00007f5ed449f8df in pread64 () from /lib64/libc.so.6 #1 0x000055d55aaf3d95 in os_file_io(IORequest const&, int, void*, unsigned long, unsigned long, dberr_t*) () #2 0x000055d55aaf484b in os_file_read_func(IORequest const&, int, void*, unsigned long, unsigned long, unsigned long*) () #3 0x000055d55aaf575c in os_aio(IORequest const&, void*, unsigned long, unsigned long) () #4 0x000055d55ac09d53 in fil_space_t::io(IORequest const&, unsigned long, unsigned long, void*, buf_page_t*) () #5 0x000055d55abdbe1a in buf_read_page_low(page_id_t, unsigned long, buf_pool_t::hash_chain&, fil_space_t*, buf_block_t*&, bool) () #6 0x000055d55abdc347 in buf_read_page(page_id_t, unsigned long, buf_pool_t::hash_chain&) () #7 0x000055d55a42b39c in buf_page_get_low(page_id_t, unsigned long, unsigned long, buf_block_t*, unsigned long, mtr_t*, dberr_t*) () #8 0x000055d55aba066f in btr_block_get(dict_index_t const&, unsigned int, rw_lock_type_t, mtr_t*, dberr_t*) () #9 0x000055d55abc374b in btr_pcur_move_to_next_page(btr_pcur_t*, mtr_t*) () #10 0x000055d55ab5cb3d in row_search_mvcc(unsigned char*, page_cur_mode_t, row_prebuilt_t*, unsigned long, unsigned long) () #11 0x000055d55aa98e9b in ha_innobase::rnd_next(unsigned char*) () #12 0x000055d55a7b9bbf in handler::ha_rnd_next(unsigned char*) () #13 0x000055d55a470c70 in rr_sequential(READ_RECORD*) () #14 0x000055d55a5ffb45 in copy_data_between_tables(THD*, TABLE*, TABLE*, bool, unsigned int, st_order*, unsigned long long*, unsigned long long*, Alter_info*, Alter_table_ctx*, bool, unsigned long long) [clone .constprop.0] () #15 0x000055d55a605517 in mysql_alter_table(THD*, st_mysql_const_lex_string const*, st_mysql_const_lex_string const*, Table_specification_st*, TABLE_LIST*, Recreate_info*, Alter_info*, unsigned int, st_order*, bool, bool) () #16 0x000055d55a6720e0 in Sql_cmd_alter_table::execute(THD*) () #17 0x000055d55a542cc5 in mysql_execute_command(THD*, bool) () #18 0x000055d55a543c11 in mysql_parse(THD*, char*, unsigned int, Parser_state*) () #19 0x000055d55a5465f5 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool) () #20 0x000055d55a548244 in do_command(THD*, bool) () #21 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #22 0x000055d55a66d3dd in handle_one_connection () #23 0x000055d55a9d7962 in pfs_spawn_thread () #24 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #25 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 7 (Thread 0x7f5ed00ce640 (LWP 236) "mariadbd"): #0 0x00007f5ed43b8b0a in sigtimedwait () from /lib64/libc.so.6 #1 0x000055d55a4327bb in signal_hand () #2 0x000055d55a9d7962 in pfs_spawn_thread () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 6 (Thread 0x7f5ed0119640 (LWP 235) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ba0 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a532810 in handle_manager () #3 0x000055d55a9d7962 in pfs_spawn_thread () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 5 (Thread 0x7f5ed0b25640 (LWP 232) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55abd79b7 in buf_flush_page_cleaner() () #3 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 4 (Thread 0x7f5ed1326640 (LWP 228) "mariadbd"): #0 0x00007f5ed43a1e5d in syscall () from /lib64/libc.so.6 #1 0x000055d55ac67069 in tpool::aio_linux::getevent_thread_routine(tpool::aio_linux*) () #2 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 3 (Thread 0x7f5ed1f49640 (LWP 227) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a96c280 in my_service_thread_sleep () #3 0x000055d55a9645de in ma_checkpoint_background () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 2 (Thread 0x7f5ed3edc640 (LWP 226) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55acd285f in timer_handler () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 1 (Thread 0x7f5ed401d900 (LWP 206) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a43ae0b in handle_connections_sockets() () #2 0x000055d55a43c0f5 in mysqld_main(int, char**) () #3 0x00007f5ed43a2eb0 in __libc_start_call_main () from /lib64/libc.so.6 #4 0x00007f5ed43a2f60 in __libc_start_main_impl () from /lib64/libc.so.6 #5 0x000055d55a42fc75 in _start () [Inferior 1 (process 206) detached] [New LWP 226] [New LWP 227] [New LWP 228] [New LWP 232] [New LWP 235] [New LWP 236] [New LWP 321] [New LWP 325] [New LWP 331] [New LWP 22225] [New LWP 23488] [New LWP 23919] [New LWP 23920] [New LWP 23921] [New LWP 24974] [New LWP 24975] [New LWP 24976] [New LWP 24977] [New LWP 24978] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 Thread 20 (Thread 0x7f032eb54640 (LWP 24978) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 19 (Thread 0x7f032db52640 (LWP 24977) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 18 (Thread 0x7f0317fff640 (LWP 24976) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 17 (Thread 0x7f032f355640 (LWP 24975) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 16 (Thread 0x7f5ebdb15640 (LWP 24974) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 15 (Thread 0x7f5ebd314640 (LWP 23921) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 14 (Thread 0x7f032e353640 (LWP 23920) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 13 (Thread 0x7f032d351640 (LWP 23919) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 12 (Thread 0x7f5ebcb13640 (LWP 23488) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 11 (Thread 0x7f03167fc640 (LWP 22225) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 10 (Thread 0x7f5ebc2c7640 (LWP 331) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 9 (Thread 0x7f5ebc312640 (LWP 325) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 8 (Thread 0x7f5ed0083640 (LWP 321) "mariadbd"): #0 0x00007f5ed43a1e5d in syscall () from /lib64/libc.so.6 #1 0x00007f5ed4e963a5 in io_submit () from /lib64/libaio.so.1 #2 0x000055d55ac66f8b in tpool::aio_linux::submit_io(tpool::aiocb*) () #3 0x000055d55aaf58af in os_aio(IORequest const&, void*, unsigned long, unsigned long) () #4 0x000055d55ac09d53 in fil_space_t::io(IORequest const&, unsigned long, unsigned long, void*, buf_page_t*) () #5 0x000055d55abdbec6 in buf_read_page_low(page_id_t, unsigned long, buf_pool_t::hash_chain&, fil_space_t*, buf_block_t*&, bool) () #6 0x000055d55a42d377 in buf_read_ahead_linear(page_id_t, unsigned long) () #7 0x000055d55a42b0b9 in buf_page_get_low(page_id_t, unsigned long, unsigned long, buf_block_t*, unsigned long, mtr_t*, dberr_t*) () #8 0x000055d55aba066f in btr_block_get(dict_index_t const&, unsigned int, rw_lock_type_t, mtr_t*, dberr_t*) () #9 0x000055d55abc374b in btr_pcur_move_to_next_page(btr_pcur_t*, mtr_t*) () #10 0x000055d55ab5cb3d in row_search_mvcc(unsigned char*, page_cur_mode_t, row_prebuilt_t*, unsigned long, unsigned long) () #11 0x000055d55aa98e9b in ha_innobase::rnd_next(unsigned char*) () #12 0x000055d55a7b9bbf in handler::ha_rnd_next(unsigned char*) () #13 0x000055d55a470c70 in rr_sequential(READ_RECORD*) () #14 0x000055d55a5ffb45 in copy_data_between_tables(THD*, TABLE*, TABLE*, bool, unsigned int, st_order*, unsigned long long*, unsigned long long*, Alter_info*, Alter_table_ctx*, bool, unsigned long long) [clone .constprop.0] () #15 0x000055d55a605517 in mysql_alter_table(THD*, st_mysql_const_lex_string const*, st_mysql_const_lex_string const*, Table_specification_st*, TABLE_LIST*, Recreate_info*, Alter_info*, unsigned int, st_order*, bool, bool) () #16 0x000055d55a6720e0 in Sql_cmd_alter_table::execute(THD*) () #17 0x000055d55a542cc5 in mysql_execute_command(THD*, bool) () #18 0x000055d55a543c11 in mysql_parse(THD*, char*, unsigned int, Parser_state*) () #19 0x000055d55a5465f5 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool) () #20 0x000055d55a548244 in do_command(THD*, bool) () #21 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #22 0x000055d55a66d3dd in handle_one_connection () #23 0x000055d55a9d7962 in pfs_spawn_thread () #24 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #25 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 7 (Thread 0x7f5ed00ce640 (LWP 236) "mariadbd"): #0 0x00007f5ed43b8b0a in sigtimedwait () from /lib64/libc.so.6 #1 0x000055d55a4327bb in signal_hand () #2 0x000055d55a9d7962 in pfs_spawn_thread () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 6 (Thread 0x7f5ed0119640 (LWP 235) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ba0 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a532810 in handle_manager () #3 0x000055d55a9d7962 in pfs_spawn_thread () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 5 (Thread 0x7f5ed0b25640 (LWP 232) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55abd79b7 in buf_flush_page_cleaner() () #3 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 4 (Thread 0x7f5ed1326640 (LWP 228) "mariadbd"): #0 0x00007f5ed43a1e5d in syscall () from /lib64/libc.so.6 #1 0x000055d55ac67069 in tpool::aio_linux::getevent_thread_routine(tpool::aio_linux*) () #2 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 3 (Thread 0x7f5ed1f49640 (LWP 227) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a96c280 in my_service_thread_sleep () #3 0x000055d55a9645de in ma_checkpoint_background () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 2 (Thread 0x7f5ed3edc640 (LWP 226) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55acd285f in timer_handler () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 1 (Thread 0x7f5ed401d900 (LWP 206) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a43ae0b in handle_connections_sockets() () #2 0x000055d55a43c0f5 in mysqld_main(int, char**) () #3 0x00007f5ed43a2eb0 in __libc_start_call_main () from /lib64/libc.so.6 #4 0x00007f5ed43a2f60 in __libc_start_main_impl () from /lib64/libc.so.6 #5 0x000055d55a42fc75 in _start () [Inferior 1 (process 206) detached] [New LWP 226] [New LWP 227] [New LWP 228] [New LWP 232] [New LWP 235] [New LWP 236] [New LWP 321] [New LWP 325] [New LWP 331] [New LWP 22225] [New LWP 23488] [New LWP 23919] [New LWP 23920] [New LWP 23921] [New LWP 24974] [New LWP 24975] [New LWP 24976] [New LWP 24977] [New LWP 24978] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 Thread 20 (Thread 0x7f032eb54640 (LWP 24978) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 19 (Thread 0x7f032db52640 (LWP 24977) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 18 (Thread 0x7f0317fff640 (LWP 24976) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 17 (Thread 0x7f032f355640 (LWP 24975) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 16 (Thread 0x7f5ebdb15640 (LWP 24974) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 15 (Thread 0x7f5ebd314640 (LWP 23921) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 14 (Thread 0x7f032e353640 (LWP 23920) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 13 (Thread 0x7f032d351640 (LWP 23919) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 12 (Thread 0x7f5ebcb13640 (LWP 23488) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 11 (Thread 0x7f03167fc640 (LWP 22225) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 10 (Thread 0x7f5ebc2c7640 (LWP 331) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 9 (Thread 0x7f5ebc312640 (LWP 325) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 8 (Thread 0x7f5ed0083640 (LWP 321) "mariadbd"): #0 0x00007f5ed441c4e8 in __memcmp_avx2_movbe () from /lib64/libc.so.6 #1 0x000055d55ab1be8a in cmp_data(unsigned long, unsigned long, bool, unsigned char const*, unsigned long, unsigned char const*, unsigned long) () #2 0x000055d55ab1c1cf in cmp_dtuple_rec_with_match_low(dtuple_t const*, unsigned char const*, dict_index_t const*, unsigned short const*, unsigned long, unsigned long*) () #3 0x000055d55aaf8e22 in page_cur_search_with_match(dtuple_t const*, page_cur_mode_t, unsigned long*, unsigned long*, page_cur_t*, rtr_info*) () #4 0x000055d55abb752c in btr_cur_t::search_leaf(dtuple_t const*, page_cur_mode_t, btr_latch_mode, mtr_t*) () #5 0x000055d55ab31866 in row_ins_sec_index_entry_low(unsigned long, btr_latch_mode, dict_index_t*, mem_block_info_t*, mem_block_info_t*, dtuple_t*, unsigned long, que_thr_t*) () #6 0x000055d55ab35038 in row_ins_sec_index_entry(dict_index_t*, dtuple_t*, que_thr_t*, bool) () #7 0x000055d55ab356d5 in row_ins_step(que_thr_t*) () #8 0x000055d55ab47561 in row_insert_for_mysql(unsigned char const*, row_prebuilt_t*, ins_mode_t) () #9 0x000055d55aa97037 in ha_innobase::write_row(unsigned char const*) () #10 0x000055d55a7c2678 in handler::ha_write_row(unsigned char const*) () #11 0x000055d55a5ffaee in copy_data_between_tables(THD*, TABLE*, TABLE*, bool, unsigned int, st_order*, unsigned long long*, unsigned long long*, Alter_info*, Alter_table_ctx*, bool, unsigned long long) [clone .constprop.0] () #12 0x000055d55a605517 in mysql_alter_table(THD*, st_mysql_const_lex_string const*, st_mysql_const_lex_string const*, Table_specification_st*, TABLE_LIST*, Recreate_info*, Alter_info*, unsigned int, st_order*, bool, bool) () #13 0x000055d55a6720e0 in Sql_cmd_alter_table::execute(THD*) () #14 0x000055d55a542cc5 in mysql_execute_command(THD*, bool) () #15 0x000055d55a543c11 in mysql_parse(THD*, char*, unsigned int, Parser_state*) () #16 0x000055d55a5465f5 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool) () #17 0x000055d55a548244 in do_command(THD*, bool) () #18 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #19 0x000055d55a66d3dd in handle_one_connection () #20 0x000055d55a9d7962 in pfs_spawn_thread () #21 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #22 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 7 (Thread 0x7f5ed00ce640 (LWP 236) "mariadbd"): #0 0x00007f5ed43b8b0a in sigtimedwait () from /lib64/libc.so.6 #1 0x000055d55a4327bb in signal_hand () #2 0x000055d55a9d7962 in pfs_spawn_thread () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 6 (Thread 0x7f5ed0119640 (LWP 235) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ba0 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a532810 in handle_manager () #3 0x000055d55a9d7962 in pfs_spawn_thread () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 5 (Thread 0x7f5ed0b25640 (LWP 232) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55abd79b7 in buf_flush_page_cleaner() () #3 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 4 (Thread 0x7f5ed1326640 (LWP 228) "mariadbd"): #0 0x00007f5ed43a1e5d in syscall () from /lib64/libc.so.6 #1 0x000055d55ac67069 in tpool::aio_linux::getevent_thread_routine(tpool::aio_linux*) () #2 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 3 (Thread 0x7f5ed1f49640 (LWP 227) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a96c280 in my_service_thread_sleep () #3 0x000055d55a9645de in ma_checkpoint_background () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 2 (Thread 0x7f5ed3edc640 (LWP 226) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55acd285f in timer_handler () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 1 (Thread 0x7f5ed401d900 (LWP 206) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a43ae0b in handle_connections_sockets() () #2 0x000055d55a43c0f5 in mysqld_main(int, char**) () #3 0x00007f5ed43a2eb0 in __libc_start_call_main () from /lib64/libc.so.6 #4 0x00007f5ed43a2f60 in __libc_start_main_impl () from /lib64/libc.so.6 #5 0x000055d55a42fc75 in _start () [Inferior 1 (process 206) detached] [New LWP 226] [New LWP 227] [New LWP 228] [New LWP 232] [New LWP 235] [New LWP 236] [New LWP 321] [New LWP 325] [New LWP 331] [New LWP 22225] [New LWP 23488] [New LWP 23919] [New LWP 23920] [New LWP 23921] [New LWP 24974] [New LWP 24975] [New LWP 24976] [New LWP 24977] [New LWP 24978] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 Thread 20 (Thread 0x7f032eb54640 (LWP 24978) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 19 (Thread 0x7f032db52640 (LWP 24977) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 18 (Thread 0x7f0317fff640 (LWP 24976) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 17 (Thread 0x7f032f355640 (LWP 24975) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 16 (Thread 0x7f5ebdb15640 (LWP 24974) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 15 (Thread 0x7f5ebd314640 (LWP 23921) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 14 (Thread 0x7f032e353640 (LWP 23920) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 13 (Thread 0x7f032d351640 (LWP 23919) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 12 (Thread 0x7f5ebcb13640 (LWP 23488) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 11 (Thread 0x7f03167fc640 (LWP 22225) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 10 (Thread 0x7f5ebc2c7640 (LWP 331) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 9 (Thread 0x7f5ebc312640 (LWP 325) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 8 (Thread 0x7f5ed0083640 (LWP 321) "mariadbd"): #0 0x000055d55ab1ccf4 in rec_get_offsets_func(unsigned char const*, dict_index_t const*, unsigned short*, unsigned long, unsigned long, mem_block_info_t**) () #1 0x000055d55aaf8999 in page_cur_search_with_match(dtuple_t const*, page_cur_mode_t, unsigned long*, unsigned long*, page_cur_t*, rtr_info*) () #2 0x000055d55abb77ff in btr_cur_t::search_leaf(dtuple_t const*, page_cur_mode_t, btr_latch_mode, mtr_t*) () #3 0x000055d55ab31866 in row_ins_sec_index_entry_low(unsigned long, btr_latch_mode, dict_index_t*, mem_block_info_t*, mem_block_info_t*, dtuple_t*, unsigned long, que_thr_t*) () #4 0x000055d55ab35038 in row_ins_sec_index_entry(dict_index_t*, dtuple_t*, que_thr_t*, bool) () #5 0x000055d55ab356d5 in row_ins_step(que_thr_t*) () #6 0x000055d55ab47561 in row_insert_for_mysql(unsigned char const*, row_prebuilt_t*, ins_mode_t) () #7 0x000055d55aa97037 in ha_innobase::write_row(unsigned char const*) () #8 0x000055d55a7c2678 in handler::ha_write_row(unsigned char const*) () #9 0x000055d55a5ffaee in copy_data_between_tables(THD*, TABLE*, TABLE*, bool, unsigned int, st_order*, unsigned long long*, unsigned long long*, Alter_info*, Alter_table_ctx*, bool, unsigned long long) [clone .constprop.0] () #10 0x000055d55a605517 in mysql_alter_table(THD*, st_mysql_const_lex_string const*, st_mysql_const_lex_string const*, Table_specification_st*, TABLE_LIST*, Recreate_info*, Alter_info*, unsigned int, st_order*, bool, bool) () #11 0x000055d55a6720e0 in Sql_cmd_alter_table::execute(THD*) () #12 0x000055d55a542cc5 in mysql_execute_command(THD*, bool) () #13 0x000055d55a543c11 in mysql_parse(THD*, char*, unsigned int, Parser_state*) () #14 0x000055d55a5465f5 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool) () #15 0x000055d55a548244 in do_command(THD*, bool) () #16 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #17 0x000055d55a66d3dd in handle_one_connection () #18 0x000055d55a9d7962 in pfs_spawn_thread () #19 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #20 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 7 (Thread 0x7f5ed00ce640 (LWP 236) "mariadbd"): #0 0x00007f5ed43b8b0a in sigtimedwait () from /lib64/libc.so.6 #1 0x000055d55a4327bb in signal_hand () #2 0x000055d55a9d7962 in pfs_spawn_thread () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 6 (Thread 0x7f5ed0119640 (LWP 235) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ba0 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a532810 in handle_manager () #3 0x000055d55a9d7962 in pfs_spawn_thread () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 5 (Thread 0x7f5ed0b25640 (LWP 232) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55abd79b7 in buf_flush_page_cleaner() () #3 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 4 (Thread 0x7f5ed1326640 (LWP 228) "mariadbd"): #0 0x00007f5ed43a1e5d in syscall () from /lib64/libc.so.6 #1 0x000055d55ac67069 in tpool::aio_linux::getevent_thread_routine(tpool::aio_linux*) () #2 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 3 (Thread 0x7f5ed1f49640 (LWP 227) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a96c280 in my_service_thread_sleep () #3 0x000055d55a9645de in ma_checkpoint_background () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 2 (Thread 0x7f5ed3edc640 (LWP 226) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55acd285f in timer_handler () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 1 (Thread 0x7f5ed401d900 (LWP 206) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a43ae0b in handle_connections_sockets() () #2 0x000055d55a43c0f5 in mysqld_main(int, char**) () #3 0x00007f5ed43a2eb0 in __libc_start_call_main () from /lib64/libc.so.6 #4 0x00007f5ed43a2f60 in __libc_start_main_impl () from /lib64/libc.so.6 #5 0x000055d55a42fc75 in _start () [Inferior 1 (process 206) detached] [New LWP 226] [New LWP 227] [New LWP 228] [New LWP 232] [New LWP 235] [New LWP 236] [New LWP 321] [New LWP 325] [New LWP 331] [New LWP 22225] [New LWP 23488] [New LWP 23919] [New LWP 23920] [New LWP 23921] [New LWP 24974] [New LWP 24975] [New LWP 24976] [New LWP 24977] [New LWP 24978] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 Thread 20 (Thread 0x7f032eb54640 (LWP 24978) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 19 (Thread 0x7f032db52640 (LWP 24977) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 18 (Thread 0x7f0317fff640 (LWP 24976) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 17 (Thread 0x7f032f355640 (LWP 24975) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 16 (Thread 0x7f5ebdb15640 (LWP 24974) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 15 (Thread 0x7f5ebd314640 (LWP 23921) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 14 (Thread 0x7f032e353640 (LWP 23920) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 13 (Thread 0x7f032d351640 (LWP 23919) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 12 (Thread 0x7f5ebcb13640 (LWP 23488) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 11 (Thread 0x7f03167fc640 (LWP 22225) "mariadbd"): #0 0x00007f5ed43a1e5d in syscall () from /lib64/libc.so.6 #1 0x000055d55ab733d8 in ssux_lock_impl::wr_wait(unsigned int) () #2 0x000055d55aad54ac in log_write_up_to(unsigned long, bool, completion_callback const*) () #3 0x000055d55ab70cca in srv_master_callback () #4 0x000055d55ac65f20 in tpool::thread_pool_generic::timer_generic::execute(void*) () #5 0x000055d55ac66982 in tpool::task::execute() () #6 0x000055d55ac64b1f in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #7 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #8 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #9 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 10 (Thread 0x7f5ebc2c7640 (LWP 331) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 9 (Thread 0x7f5ebc312640 (LWP 325) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 8 (Thread 0x7f5ed0083640 (LWP 321) "mariadbd"): #0 0x00007f5ed43ff560 in __lll_lock_wait () from /lib64/libc.so.6 #1 0x00007f5ed4405da4 in pthread_mutex_lock@@GLIBC_2.2.5 () from /lib64/libc.so.6 #2 0x000055d55aaf1dd3 in mtr_t::commit() () #3 0x000055d55ab30265 in row_ins_clust_index_entry_low(unsigned long, btr_latch_mode, dict_index_t*, unsigned long, dtuple_t*, unsigned long, que_thr_t*) () #4 0x000055d55ab34f2d in row_ins_clust_index_entry(dict_index_t*, dtuple_t*, que_thr_t*, unsigned long) () #5 0x000055d55ab3553c in row_ins_step(que_thr_t*) () #6 0x000055d55ab47561 in row_insert_for_mysql(unsigned char const*, row_prebuilt_t*, ins_mode_t) () #7 0x000055d55aa97037 in ha_innobase::write_row(unsigned char const*) () #8 0x000055d55a7c2678 in handler::ha_write_row(unsigned char const*) () #9 0x000055d55a5ffaee in copy_data_between_tables(THD*, TABLE*, TABLE*, bool, unsigned int, st_order*, unsigned long long*, unsigned long long*, Alter_info*, Alter_table_ctx*, bool, unsigned long long) [clone .constprop.0] () #10 0x000055d55a605517 in mysql_alter_table(THD*, st_mysql_const_lex_string const*, st_mysql_const_lex_string const*, Table_specification_st*, TABLE_LIST*, Recreate_info*, Alter_info*, unsigned int, st_order*, bool, bool) () #11 0x000055d55a6720e0 in Sql_cmd_alter_table::execute(THD*) () #12 0x000055d55a542cc5 in mysql_execute_command(THD*, bool) () #13 0x000055d55a543c11 in mysql_parse(THD*, char*, unsigned int, Parser_state*) () #14 0x000055d55a5465f5 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool) () #15 0x000055d55a548244 in do_command(THD*, bool) () #16 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #17 0x000055d55a66d3dd in handle_one_connection () #18 0x000055d55a9d7962 in pfs_spawn_thread () #19 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #20 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 7 (Thread 0x7f5ed00ce640 (LWP 236) "mariadbd"): #0 0x00007f5ed43b8b0a in sigtimedwait () from /lib64/libc.so.6 #1 0x000055d55a4327bb in signal_hand () #2 0x000055d55a9d7962 in pfs_spawn_thread () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 6 (Thread 0x7f5ed0119640 (LWP 235) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ba0 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a532810 in handle_manager () #3 0x000055d55a9d7962 in pfs_spawn_thread () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 5 (Thread 0x7f5ed0b25640 (LWP 232) "mariadbd"): #0 0x000055d55abd83fd in buf_flush_page_cleaner() () #1 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #2 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #3 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 4 (Thread 0x7f5ed1326640 (LWP 228) "mariadbd"): #0 0x00007f5ed43a1e5d in syscall () from /lib64/libc.so.6 #1 0x000055d55ac67069 in tpool::aio_linux::getevent_thread_routine(tpool::aio_linux*) () #2 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 3 (Thread 0x7f5ed1f49640 (LWP 227) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a96c280 in my_service_thread_sleep () #3 0x000055d55a9645de in ma_checkpoint_background () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 2 (Thread 0x7f5ed3edc640 (LWP 226) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55acd285f in timer_handler () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 1 (Thread 0x7f5ed401d900 (LWP 206) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a43ae0b in handle_connections_sockets() () #2 0x000055d55a43c0f5 in mysqld_main(int, char**) () #3 0x00007f5ed43a2eb0 in __libc_start_call_main () from /lib64/libc.so.6 #4 0x00007f5ed43a2f60 in __libc_start_main_impl () from /lib64/libc.so.6 #5 0x000055d55a42fc75 in _start () [Inferior 1 (process 206) detached] [New LWP 226] [New LWP 227] [New LWP 228] [New LWP 232] [New LWP 235] [New LWP 236] [New LWP 321] [New LWP 325] [New LWP 331] [New LWP 22225] [New LWP 23488] [New LWP 23919] [New LWP 23920] [New LWP 23921] [New LWP 24974] [New LWP 24975] [New LWP 24976] [New LWP 24977] [New LWP 24978] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 Thread 20 (Thread 0x7f032eb54640 (LWP 24978) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 19 (Thread 0x7f032db52640 (LWP 24977) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 18 (Thread 0x7f0317fff640 (LWP 24976) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 17 (Thread 0x7f032f355640 (LWP 24975) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 16 (Thread 0x7f5ebdb15640 (LWP 24974) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 15 (Thread 0x7f5ebd314640 (LWP 23921) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 14 (Thread 0x7f032e353640 (LWP 23920) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 13 (Thread 0x7f032d351640 (LWP 23919) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 12 (Thread 0x7f5ebcb13640 (LWP 23488) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 11 (Thread 0x7f03167fc640 (LWP 22225) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 10 (Thread 0x7f5ebc2c7640 (LWP 331) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 9 (Thread 0x7f5ebc312640 (LWP 325) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 8 (Thread 0x7f5ed0083640 (LWP 321) "mariadbd"): #0 0x000055d55a78f381 in Field_varstring::val_str(String*, String*) () #1 0x000055d55a7aac40 in Field_blob::do_conv_blob(Copy_field const*) () #2 0x000055d55a5ff9de in copy_data_between_tables(THD*, TABLE*, TABLE*, bool, unsigned int, st_order*, unsigned long long*, unsigned long long*, Alter_info*, Alter_table_ctx*, bool, unsigned long long) [clone .constprop.0] () #3 0x000055d55a605517 in mysql_alter_table(THD*, st_mysql_const_lex_string const*, st_mysql_const_lex_string const*, Table_specification_st*, TABLE_LIST*, Recreate_info*, Alter_info*, unsigned int, st_order*, bool, bool) () #4 0x000055d55a6720e0 in Sql_cmd_alter_table::execute(THD*) () #5 0x000055d55a542cc5 in mysql_execute_command(THD*, bool) () #6 0x000055d55a543c11 in mysql_parse(THD*, char*, unsigned int, Parser_state*) () #7 0x000055d55a5465f5 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool) () #8 0x000055d55a548244 in do_command(THD*, bool) () #9 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #10 0x000055d55a66d3dd in handle_one_connection () #11 0x000055d55a9d7962 in pfs_spawn_thread () #12 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #13 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 7 (Thread 0x7f5ed00ce640 (LWP 236) "mariadbd"): #0 0x00007f5ed43b8b0a in sigtimedwait () from /lib64/libc.so.6 #1 0x000055d55a4327bb in signal_hand () #2 0x000055d55a9d7962 in pfs_spawn_thread () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 6 (Thread 0x7f5ed0119640 (LWP 235) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ba0 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a532810 in handle_manager () #3 0x000055d55a9d7962 in pfs_spawn_thread () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 5 (Thread 0x7f5ed0b25640 (LWP 232) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55abd79b7 in buf_flush_page_cleaner() () #3 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 4 (Thread 0x7f5ed1326640 (LWP 228) "mariadbd"): #0 0x00007f5ed43a1e5d in syscall () from /lib64/libc.so.6 #1 0x000055d55ac67069 in tpool::aio_linux::getevent_thread_routine(tpool::aio_linux*) () #2 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 3 (Thread 0x7f5ed1f49640 (LWP 227) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a96c280 in my_service_thread_sleep () #3 0x000055d55a9645de in ma_checkpoint_background () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 2 (Thread 0x7f5ed3edc640 (LWP 226) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55acd285f in timer_handler () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 1 (Thread 0x7f5ed401d900 (LWP 206) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a43ae0b in handle_connections_sockets() () #2 0x000055d55a43c0f5 in mysqld_main(int, char**) () #3 0x00007f5ed43a2eb0 in __libc_start_call_main () from /lib64/libc.so.6 #4 0x00007f5ed43a2f60 in __libc_start_main_impl () from /lib64/libc.so.6 #5 0x000055d55a42fc75 in _start () [Inferior 1 (process 206) detached] [New LWP 226] [New LWP 227] [New LWP 228] [New LWP 232] [New LWP 235] [New LWP 236] [New LWP 321] [New LWP 325] [New LWP 331] [New LWP 22225] [New LWP 23488] [New LWP 23919] [New LWP 23920] [New LWP 23921] [New LWP 24974] [New LWP 24975] [New LWP 24976] [New LWP 24977] [New LWP 24978] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 Thread 20 (Thread 0x7f032eb54640 (LWP 24978) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 19 (Thread 0x7f032db52640 (LWP 24977) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 18 (Thread 0x7f0317fff640 (LWP 24976) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 17 (Thread 0x7f032f355640 (LWP 24975) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 16 (Thread 0x7f5ebdb15640 (LWP 24974) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 15 (Thread 0x7f5ebd314640 (LWP 23921) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 14 (Thread 0x7f032e353640 (LWP 23920) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 13 (Thread 0x7f032d351640 (LWP 23919) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 12 (Thread 0x7f5ebcb13640 (LWP 23488) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 11 (Thread 0x7f03167fc640 (LWP 22225) "mariadbd"): #0 0x00007f5ed43a1e5d in syscall () from /lib64/libc.so.6 #1 0x000055d55ab733d8 in ssux_lock_impl::wr_wait(unsigned int) () #2 0x000055d55aad54ac in log_write_up_to(unsigned long, bool, completion_callback const*) () #3 0x000055d55ab70cca in srv_master_callback () #4 0x000055d55ac65f20 in tpool::thread_pool_generic::timer_generic::execute(void*) () #5 0x000055d55ac66982 in tpool::task::execute() () #6 0x000055d55ac64b1f in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #7 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #8 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #9 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 10 (Thread 0x7f5ebc2c7640 (LWP 331) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 9 (Thread 0x7f5ebc312640 (LWP 325) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 8 (Thread 0x7f5ed0083640 (LWP 321) "mariadbd"): #0 0x00007f5ed43ff560 in __lll_lock_wait () from /lib64/libc.so.6 #1 0x00007f5ed4405da4 in pthread_mutex_lock@@GLIBC_2.2.5 () from /lib64/libc.so.6 #2 0x000055d55aaf1dd3 in mtr_t::commit() () #3 0x000055d55ab31dbf in row_ins_sec_index_entry_low(unsigned long, btr_latch_mode, dict_index_t*, mem_block_info_t*, mem_block_info_t*, dtuple_t*, unsigned long, que_thr_t*) () #4 0x000055d55ab3519f in row_ins_sec_index_entry(dict_index_t*, dtuple_t*, que_thr_t*, bool) () #5 0x000055d55ab356d5 in row_ins_step(que_thr_t*) () #6 0x000055d55ab47561 in row_insert_for_mysql(unsigned char const*, row_prebuilt_t*, ins_mode_t) () #7 0x000055d55aa97037 in ha_innobase::write_row(unsigned char const*) () #8 0x000055d55a7c2678 in handler::ha_write_row(unsigned char const*) () #9 0x000055d55a5ffaee in copy_data_between_tables(THD*, TABLE*, TABLE*, bool, unsigned int, st_order*, unsigned long long*, unsigned long long*, Alter_info*, Alter_table_ctx*, bool, unsigned long long) [clone .constprop.0] () #10 0x000055d55a605517 in mysql_alter_table(THD*, st_mysql_const_lex_string const*, st_mysql_const_lex_string const*, Table_specification_st*, TABLE_LIST*, Recreate_info*, Alter_info*, unsigned int, st_order*, bool, bool) () #11 0x000055d55a6720e0 in Sql_cmd_alter_table::execute(THD*) () #12 0x000055d55a542cc5 in mysql_execute_command(THD*, bool) () #13 0x000055d55a543c11 in mysql_parse(THD*, char*, unsigned int, Parser_state*) () #14 0x000055d55a5465f5 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool) () #15 0x000055d55a548244 in do_command(THD*, bool) () #16 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #17 0x000055d55a66d3dd in handle_one_connection () #18 0x000055d55a9d7962 in pfs_spawn_thread () #19 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #20 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 7 (Thread 0x7f5ed00ce640 (LWP 236) "mariadbd"): #0 0x00007f5ed43b8b0a in sigtimedwait () from /lib64/libc.so.6 #1 0x000055d55a4327bb in signal_hand () #2 0x000055d55a9d7962 in pfs_spawn_thread () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 6 (Thread 0x7f5ed0119640 (LWP 235) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ba0 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a532810 in handle_manager () #3 0x000055d55a9d7962 in pfs_spawn_thread () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 5 (Thread 0x7f5ed0b25640 (LWP 232) "mariadbd"): #0 0x000055d55abd83fd in buf_flush_page_cleaner() () #1 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #2 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #3 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 4 (Thread 0x7f5ed1326640 (LWP 228) "mariadbd"): #0 0x00007f5ed43a1e5d in syscall () from /lib64/libc.so.6 #1 0x000055d55ac67069 in tpool::aio_linux::getevent_thread_routine(tpool::aio_linux*) () #2 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 3 (Thread 0x7f5ed1f49640 (LWP 227) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a96c280 in my_service_thread_sleep () #3 0x000055d55a9645de in ma_checkpoint_background () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 2 (Thread 0x7f5ed3edc640 (LWP 226) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55acd285f in timer_handler () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 1 (Thread 0x7f5ed401d900 (LWP 206) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a43ae0b in handle_connections_sockets() () #2 0x000055d55a43c0f5 in mysqld_main(int, char**) () #3 0x00007f5ed43a2eb0 in __libc_start_call_main () from /lib64/libc.so.6 #4 0x00007f5ed43a2f60 in __libc_start_main_impl () from /lib64/libc.so.6 #5 0x000055d55a42fc75 in _start () [Inferior 1 (process 206) detached] [New LWP 226] [New LWP 227] [New LWP 228] [New LWP 232] [New LWP 235] [New LWP 236] [New LWP 321] [New LWP 325] [New LWP 331] [New LWP 22225] [New LWP 23488] [New LWP 23919] [New LWP 23920] [New LWP 23921] [New LWP 24974] [New LWP 24975] [New LWP 24976] [New LWP 24977] [New LWP 24978] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 Thread 20 (Thread 0x7f032eb54640 (LWP 24978) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 19 (Thread 0x7f032db52640 (LWP 24977) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 18 (Thread 0x7f0317fff640 (LWP 24976) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 17 (Thread 0x7f032f355640 (LWP 24975) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 16 (Thread 0x7f5ebdb15640 (LWP 24974) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 15 (Thread 0x7f5ebd314640 (LWP 23921) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 14 (Thread 0x7f032e353640 (LWP 23920) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 13 (Thread 0x7f032d351640 (LWP 23919) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 12 (Thread 0x7f5ebcb13640 (LWP 23488) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 11 (Thread 0x7f03167fc640 (LWP 22225) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 10 (Thread 0x7f5ebc2c7640 (LWP 331) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 9 (Thread 0x7f5ebc312640 (LWP 325) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 8 (Thread 0x7f5ed0083640 (LWP 321) "mariadbd"): #0 0x00007f5ed449f8df in pread64 () from /lib64/libc.so.6 #1 0x000055d55aaf3d95 in os_file_io(IORequest const&, int, void*, unsigned long, unsigned long, dberr_t*) () #2 0x000055d55aaf484b in os_file_read_func(IORequest const&, int, void*, unsigned long, unsigned long, unsigned long*) () #3 0x000055d55aaf575c in os_aio(IORequest const&, void*, unsigned long, unsigned long) () #4 0x000055d55ac09d53 in fil_space_t::io(IORequest const&, unsigned long, unsigned long, void*, buf_page_t*) () #5 0x000055d55abdbe1a in buf_read_page_low(page_id_t, unsigned long, buf_pool_t::hash_chain&, fil_space_t*, buf_block_t*&, bool) () #6 0x000055d55abdc347 in buf_read_page(page_id_t, unsigned long, buf_pool_t::hash_chain&) () #7 0x000055d55a42b39c in buf_page_get_low(page_id_t, unsigned long, unsigned long, buf_block_t*, unsigned long, mtr_t*, dberr_t*) () #8 0x000055d55aba066f in btr_block_get(dict_index_t const&, unsigned int, rw_lock_type_t, mtr_t*, dberr_t*) () #9 0x000055d55abc374b in btr_pcur_move_to_next_page(btr_pcur_t*, mtr_t*) () #10 0x000055d55ab5cb3d in row_search_mvcc(unsigned char*, page_cur_mode_t, row_prebuilt_t*, unsigned long, unsigned long) () #11 0x000055d55aa98e9b in ha_innobase::rnd_next(unsigned char*) () #12 0x000055d55a7b9bbf in handler::ha_rnd_next(unsigned char*) () #13 0x000055d55a470c70 in rr_sequential(READ_RECORD*) () #14 0x000055d55a5ffb45 in copy_data_between_tables(THD*, TABLE*, TABLE*, bool, unsigned int, st_order*, unsigned long long*, unsigned long long*, Alter_info*, Alter_table_ctx*, bool, unsigned long long) [clone .constprop.0] () #15 0x000055d55a605517 in mysql_alter_table(THD*, st_mysql_const_lex_string const*, st_mysql_const_lex_string const*, Table_specification_st*, TABLE_LIST*, Recreate_info*, Alter_info*, unsigned int, st_order*, bool, bool) () #16 0x000055d55a6720e0 in Sql_cmd_alter_table::execute(THD*) () #17 0x000055d55a542cc5 in mysql_execute_command(THD*, bool) () #18 0x000055d55a543c11 in mysql_parse(THD*, char*, unsigned int, Parser_state*) () #19 0x000055d55a5465f5 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool) () #20 0x000055d55a548244 in do_command(THD*, bool) () #21 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #22 0x000055d55a66d3dd in handle_one_connection () #23 0x000055d55a9d7962 in pfs_spawn_thread () #24 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #25 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 7 (Thread 0x7f5ed00ce640 (LWP 236) "mariadbd"): #0 0x00007f5ed43b8b0a in sigtimedwait () from /lib64/libc.so.6 #1 0x000055d55a4327bb in signal_hand () #2 0x000055d55a9d7962 in pfs_spawn_thread () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 6 (Thread 0x7f5ed0119640 (LWP 235) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ba0 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a532810 in handle_manager () #3 0x000055d55a9d7962 in pfs_spawn_thread () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 5 (Thread 0x7f5ed0b25640 (LWP 232) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55abd79b7 in buf_flush_page_cleaner() () #3 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 4 (Thread 0x7f5ed1326640 (LWP 228) "mariadbd"): #0 0x00007f5ed43a1e5d in syscall () from /lib64/libc.so.6 #1 0x000055d55ac67069 in tpool::aio_linux::getevent_thread_routine(tpool::aio_linux*) () #2 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 3 (Thread 0x7f5ed1f49640 (LWP 227) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a96c280 in my_service_thread_sleep () #3 0x000055d55a9645de in ma_checkpoint_background () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 2 (Thread 0x7f5ed3edc640 (LWP 226) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55acd285f in timer_handler () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 1 (Thread 0x7f5ed401d900 (LWP 206) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a43ae0b in handle_connections_sockets() () #2 0x000055d55a43c0f5 in mysqld_main(int, char**) () #3 0x00007f5ed43a2eb0 in __libc_start_call_main () from /lib64/libc.so.6 #4 0x00007f5ed43a2f60 in __libc_start_main_impl () from /lib64/libc.so.6 #5 0x000055d55a42fc75 in _start () [Inferior 1 (process 206) detached] [New LWP 226] [New LWP 227] [New LWP 228] [New LWP 232] [New LWP 235] [New LWP 236] [New LWP 321] [New LWP 325] [New LWP 331] [New LWP 22225] [New LWP 23488] [New LWP 23919] [New LWP 23920] [New LWP 23921] [New LWP 24974] [New LWP 24975] [New LWP 24976] [New LWP 24977] [New LWP 24978] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 Thread 20 (Thread 0x7f032eb54640 (LWP 24978) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 19 (Thread 0x7f032db52640 (LWP 24977) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 18 (Thread 0x7f0317fff640 (LWP 24976) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 17 (Thread 0x7f032f355640 (LWP 24975) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 16 (Thread 0x7f5ebdb15640 (LWP 24974) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 15 (Thread 0x7f5ebd314640 (LWP 23921) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 14 (Thread 0x7f032e353640 (LWP 23920) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 13 (Thread 0x7f032d351640 (LWP 23919) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 12 (Thread 0x7f5ebcb13640 (LWP 23488) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 11 (Thread 0x7f03167fc640 (LWP 22225) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 10 (Thread 0x7f5ebc2c7640 (LWP 331) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 9 (Thread 0x7f5ebc312640 (LWP 325) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 8 (Thread 0x7f5ed0083640 (LWP 321) "mariadbd"): #0 0x00007f5ed449f8df in pread64 () from /lib64/libc.so.6 #1 0x000055d55aaf3d95 in os_file_io(IORequest const&, int, void*, unsigned long, unsigned long, dberr_t*) () #2 0x000055d55aaf484b in os_file_read_func(IORequest const&, int, void*, unsigned long, unsigned long, unsigned long*) () #3 0x000055d55aaf575c in os_aio(IORequest const&, void*, unsigned long, unsigned long) () #4 0x000055d55ac09d53 in fil_space_t::io(IORequest const&, unsigned long, unsigned long, void*, buf_page_t*) () #5 0x000055d55abdbe1a in buf_read_page_low(page_id_t, unsigned long, buf_pool_t::hash_chain&, fil_space_t*, buf_block_t*&, bool) () #6 0x000055d55abdc347 in buf_read_page(page_id_t, unsigned long, buf_pool_t::hash_chain&) () #7 0x000055d55a42b39c in buf_page_get_low(page_id_t, unsigned long, unsigned long, buf_block_t*, unsigned long, mtr_t*, dberr_t*) () #8 0x000055d55aba066f in btr_block_get(dict_index_t const&, unsigned int, rw_lock_type_t, mtr_t*, dberr_t*) () #9 0x000055d55abc374b in btr_pcur_move_to_next_page(btr_pcur_t*, mtr_t*) () #10 0x000055d55ab5cb3d in row_search_mvcc(unsigned char*, page_cur_mode_t, row_prebuilt_t*, unsigned long, unsigned long) () #11 0x000055d55aa98e9b in ha_innobase::rnd_next(unsigned char*) () #12 0x000055d55a7b9bbf in handler::ha_rnd_next(unsigned char*) () #13 0x000055d55a470c70 in rr_sequential(READ_RECORD*) () #14 0x000055d55a5ffb45 in copy_data_between_tables(THD*, TABLE*, TABLE*, bool, unsigned int, st_order*, unsigned long long*, unsigned long long*, Alter_info*, Alter_table_ctx*, bool, unsigned long long) [clone .constprop.0] () #15 0x000055d55a605517 in mysql_alter_table(THD*, st_mysql_const_lex_string const*, st_mysql_const_lex_string const*, Table_specification_st*, TABLE_LIST*, Recreate_info*, Alter_info*, unsigned int, st_order*, bool, bool) () #16 0x000055d55a6720e0 in Sql_cmd_alter_table::execute(THD*) () #17 0x000055d55a542cc5 in mysql_execute_command(THD*, bool) () #18 0x000055d55a543c11 in mysql_parse(THD*, char*, unsigned int, Parser_state*) () #19 0x000055d55a5465f5 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool) () #20 0x000055d55a548244 in do_command(THD*, bool) () #21 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #22 0x000055d55a66d3dd in handle_one_connection () #23 0x000055d55a9d7962 in pfs_spawn_thread () #24 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #25 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 7 (Thread 0x7f5ed00ce640 (LWP 236) "mariadbd"): #0 0x00007f5ed43b8b0a in sigtimedwait () from /lib64/libc.so.6 #1 0x000055d55a4327bb in signal_hand () #2 0x000055d55a9d7962 in pfs_spawn_thread () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 6 (Thread 0x7f5ed0119640 (LWP 235) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ba0 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a532810 in handle_manager () #3 0x000055d55a9d7962 in pfs_spawn_thread () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 5 (Thread 0x7f5ed0b25640 (LWP 232) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55abd79b7 in buf_flush_page_cleaner() () #3 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 4 (Thread 0x7f5ed1326640 (LWP 228) "mariadbd"): #0 0x00007f5ed43a1e5d in syscall () from /lib64/libc.so.6 #1 0x000055d55ac67069 in tpool::aio_linux::getevent_thread_routine(tpool::aio_linux*) () #2 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 3 (Thread 0x7f5ed1f49640 (LWP 227) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a96c280 in my_service_thread_sleep () #3 0x000055d55a9645de in ma_checkpoint_background () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 2 (Thread 0x7f5ed3edc640 (LWP 226) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55acd285f in timer_handler () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 1 (Thread 0x7f5ed401d900 (LWP 206) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a43ae0b in handle_connections_sockets() () #2 0x000055d55a43c0f5 in mysqld_main(int, char**) () #3 0x00007f5ed43a2eb0 in __libc_start_call_main () from /lib64/libc.so.6 #4 0x00007f5ed43a2f60 in __libc_start_main_impl () from /lib64/libc.so.6 #5 0x000055d55a42fc75 in _start () [Inferior 1 (process 206) detached] [New LWP 226] [New LWP 227] [New LWP 228] [New LWP 232] [New LWP 235] [New LWP 236] [New LWP 321] [New LWP 325] [New LWP 331] [New LWP 22225] [New LWP 23488] [New LWP 23919] [New LWP 23920] [New LWP 23921] [New LWP 24974] [New LWP 24975] [New LWP 24976] [New LWP 24977] [New LWP 24978] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 Thread 20 (Thread 0x7f032eb54640 (LWP 24978) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 19 (Thread 0x7f032db52640 (LWP 24977) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 18 (Thread 0x7f0317fff640 (LWP 24976) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 17 (Thread 0x7f032f355640 (LWP 24975) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 16 (Thread 0x7f5ebdb15640 (LWP 24974) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 15 (Thread 0x7f5ebd314640 (LWP 23921) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 14 (Thread 0x7f032e353640 (LWP 23920) "mariadbd"): #0 0x00007f5ed43a1e5d in syscall () from /lib64/libc.so.6 #1 0x000055d55ab733d8 in ssux_lock_impl::wr_wait(unsigned int) () #2 0x000055d55aad54ac in log_write_up_to(unsigned long, bool, completion_callback const*) () #3 0x000055d55ab70cca in srv_master_callback () #4 0x000055d55ac65f20 in tpool::thread_pool_generic::timer_generic::execute(void*) () #5 0x000055d55ac66982 in tpool::task::execute() () #6 0x000055d55ac64b1f in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #7 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #8 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #9 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 13 (Thread 0x7f032d351640 (LWP 23919) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 12 (Thread 0x7f5ebcb13640 (LWP 23488) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 11 (Thread 0x7f03167fc640 (LWP 22225) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 10 (Thread 0x7f5ebc2c7640 (LWP 331) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 9 (Thread 0x7f5ebc312640 (LWP 325) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 8 (Thread 0x7f5ed0083640 (LWP 321) "mariadbd"): #0 0x00007f5ed43ff560 in __lll_lock_wait () from /lib64/libc.so.6 #1 0x00007f5ed4405da4 in pthread_mutex_lock@@GLIBC_2.2.5 () from /lib64/libc.so.6 #2 0x000055d55aaf1dd3 in mtr_t::commit() () #3 0x000055d55ab30265 in row_ins_clust_index_entry_low(unsigned long, btr_latch_mode, dict_index_t*, unsigned long, dtuple_t*, unsigned long, que_thr_t*) () #4 0x000055d55ab34f2d in row_ins_clust_index_entry(dict_index_t*, dtuple_t*, que_thr_t*, unsigned long) () #5 0x000055d55ab3553c in row_ins_step(que_thr_t*) () #6 0x000055d55ab47561 in row_insert_for_mysql(unsigned char const*, row_prebuilt_t*, ins_mode_t) () #7 0x000055d55aa97037 in ha_innobase::write_row(unsigned char const*) () #8 0x000055d55a7c2678 in handler::ha_write_row(unsigned char const*) () #9 0x000055d55a5ffaee in copy_data_between_tables(THD*, TABLE*, TABLE*, bool, unsigned int, st_order*, unsigned long long*, unsigned long long*, Alter_info*, Alter_table_ctx*, bool, unsigned long long) [clone .constprop.0] () #10 0x000055d55a605517 in mysql_alter_table(THD*, st_mysql_const_lex_string const*, st_mysql_const_lex_string const*, Table_specification_st*, TABLE_LIST*, Recreate_info*, Alter_info*, unsigned int, st_order*, bool, bool) () #11 0x000055d55a6720e0 in Sql_cmd_alter_table::execute(THD*) () #12 0x000055d55a542cc5 in mysql_execute_command(THD*, bool) () #13 0x000055d55a543c11 in mysql_parse(THD*, char*, unsigned int, Parser_state*) () #14 0x000055d55a5465f5 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool) () #15 0x000055d55a548244 in do_command(THD*, bool) () #16 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #17 0x000055d55a66d3dd in handle_one_connection () #18 0x000055d55a9d7962 in pfs_spawn_thread () #19 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #20 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 7 (Thread 0x7f5ed00ce640 (LWP 236) "mariadbd"): #0 0x00007f5ed43b8b0a in sigtimedwait () from /lib64/libc.so.6 #1 0x000055d55a4327bb in signal_hand () #2 0x000055d55a9d7962 in pfs_spawn_thread () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 6 (Thread 0x7f5ed0119640 (LWP 235) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ba0 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a532810 in handle_manager () #3 0x000055d55a9d7962 in pfs_spawn_thread () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 5 (Thread 0x7f5ed0b25640 (LWP 232) "mariadbd"): #0 0x000055d55abd83fd in buf_flush_page_cleaner() () #1 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #2 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #3 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 4 (Thread 0x7f5ed1326640 (LWP 228) "mariadbd"): #0 0x00007f5ed43a1e5d in syscall () from /lib64/libc.so.6 #1 0x000055d55ac67069 in tpool::aio_linux::getevent_thread_routine(tpool::aio_linux*) () #2 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 3 (Thread 0x7f5ed1f49640 (LWP 227) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a96c280 in my_service_thread_sleep () #3 0x000055d55a9645de in ma_checkpoint_background () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 2 (Thread 0x7f5ed3edc640 (LWP 226) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55acd285f in timer_handler () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 1 (Thread 0x7f5ed401d900 (LWP 206) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a43ae0b in handle_connections_sockets() () #2 0x000055d55a43c0f5 in mysqld_main(int, char**) () #3 0x00007f5ed43a2eb0 in __libc_start_call_main () from /lib64/libc.so.6 #4 0x00007f5ed43a2f60 in __libc_start_main_impl () from /lib64/libc.so.6 #5 0x000055d55a42fc75 in _start () [Inferior 1 (process 206) detached] [New LWP 226] [New LWP 227] [New LWP 228] [New LWP 232] [New LWP 235] [New LWP 236] [New LWP 321] [New LWP 325] [New LWP 331] [New LWP 22225] [New LWP 23488] [New LWP 23919] [New LWP 23920] [New LWP 23921] [New LWP 24974] [New LWP 24975] [New LWP 24976] [New LWP 24977] [New LWP 24978] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 Thread 20 (Thread 0x7f032eb54640 (LWP 24978) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 19 (Thread 0x7f032db52640 (LWP 24977) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 18 (Thread 0x7f0317fff640 (LWP 24976) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 17 (Thread 0x7f032f355640 (LWP 24975) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 16 (Thread 0x7f5ebdb15640 (LWP 24974) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 15 (Thread 0x7f5ebd314640 (LWP 23921) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 14 (Thread 0x7f032e353640 (LWP 23920) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 13 (Thread 0x7f032d351640 (LWP 23919) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 12 (Thread 0x7f5ebcb13640 (LWP 23488) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 11 (Thread 0x7f03167fc640 (LWP 22225) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 10 (Thread 0x7f5ebc2c7640 (LWP 331) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 9 (Thread 0x7f5ebc312640 (LWP 325) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 8 (Thread 0x7f5ed0083640 (LWP 321) "mariadbd"): #0 0x00007f5ed441c2c0 in __memcmp_avx2_movbe () from /lib64/libc.so.6 #1 0x000055d55ab1bed9 in cmp_data(unsigned long, unsigned long, bool, unsigned char const*, unsigned long, unsigned char const*, unsigned long) () #2 0x000055d55ab1c1cf in cmp_dtuple_rec_with_match_low(dtuple_t const*, unsigned char const*, dict_index_t const*, unsigned short const*, unsigned long, unsigned long*) () #3 0x000055d55aaf8e22 in page_cur_search_with_match(dtuple_t const*, page_cur_mode_t, unsigned long*, unsigned long*, page_cur_t*, rtr_info*) () #4 0x000055d55abb752c in btr_cur_t::search_leaf(dtuple_t const*, page_cur_mode_t, btr_latch_mode, mtr_t*) () #5 0x000055d55ab31866 in row_ins_sec_index_entry_low(unsigned long, btr_latch_mode, dict_index_t*, mem_block_info_t*, mem_block_info_t*, dtuple_t*, unsigned long, que_thr_t*) () #6 0x000055d55ab35038 in row_ins_sec_index_entry(dict_index_t*, dtuple_t*, que_thr_t*, bool) () #7 0x000055d55ab356d5 in row_ins_step(que_thr_t*) () #8 0x000055d55ab47561 in row_insert_for_mysql(unsigned char const*, row_prebuilt_t*, ins_mode_t) () #9 0x000055d55aa97037 in ha_innobase::write_row(unsigned char const*) () #10 0x000055d55a7c2678 in handler::ha_write_row(unsigned char const*) () #11 0x000055d55a5ffaee in copy_data_between_tables(THD*, TABLE*, TABLE*, bool, unsigned int, st_order*, unsigned long long*, unsigned long long*, Alter_info*, Alter_table_ctx*, bool, unsigned long long) [clone .constprop.0] () #12 0x000055d55a605517 in mysql_alter_table(THD*, st_mysql_const_lex_string const*, st_mysql_const_lex_string const*, Table_specification_st*, TABLE_LIST*, Recreate_info*, Alter_info*, unsigned int, st_order*, bool, bool) () #13 0x000055d55a6720e0 in Sql_cmd_alter_table::execute(THD*) () #14 0x000055d55a542cc5 in mysql_execute_command(THD*, bool) () #15 0x000055d55a543c11 in mysql_parse(THD*, char*, unsigned int, Parser_state*) () #16 0x000055d55a5465f5 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool) () #17 0x000055d55a548244 in do_command(THD*, bool) () #18 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #19 0x000055d55a66d3dd in handle_one_connection () #20 0x000055d55a9d7962 in pfs_spawn_thread () #21 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #22 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 7 (Thread 0x7f5ed00ce640 (LWP 236) "mariadbd"): #0 0x00007f5ed43b8b0a in sigtimedwait () from /lib64/libc.so.6 #1 0x000055d55a4327bb in signal_hand () #2 0x000055d55a9d7962 in pfs_spawn_thread () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 6 (Thread 0x7f5ed0119640 (LWP 235) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ba0 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a532810 in handle_manager () #3 0x000055d55a9d7962 in pfs_spawn_thread () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 5 (Thread 0x7f5ed0b25640 (LWP 232) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55abd79b7 in buf_flush_page_cleaner() () #3 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 4 (Thread 0x7f5ed1326640 (LWP 228) "mariadbd"): #0 0x00007f5ed43a1e5d in syscall () from /lib64/libc.so.6 #1 0x000055d55ac67069 in tpool::aio_linux::getevent_thread_routine(tpool::aio_linux*) () #2 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 3 (Thread 0x7f5ed1f49640 (LWP 227) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a96c280 in my_service_thread_sleep () #3 0x000055d55a9645de in ma_checkpoint_background () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 2 (Thread 0x7f5ed3edc640 (LWP 226) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55acd285f in timer_handler () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 1 (Thread 0x7f5ed401d900 (LWP 206) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a43ae0b in handle_connections_sockets() () #2 0x000055d55a43c0f5 in mysqld_main(int, char**) () #3 0x00007f5ed43a2eb0 in __libc_start_call_main () from /lib64/libc.so.6 #4 0x00007f5ed43a2f60 in __libc_start_main_impl () from /lib64/libc.so.6 #5 0x000055d55a42fc75 in _start () [Inferior 1 (process 206) detached] [New LWP 226] [New LWP 227] [New LWP 228] [New LWP 232] [New LWP 235] [New LWP 236] [New LWP 321] [New LWP 325] [New LWP 331] [New LWP 22225] [New LWP 23488] [New LWP 23919] [New LWP 23920] [New LWP 23921] [New LWP 24974] [New LWP 24975] [New LWP 24976] [New LWP 24977] [New LWP 24978] [New LWP 26929] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 Thread 21 (Thread 0x7f032cb50640 (LWP 26929) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 20 (Thread 0x7f032eb54640 (LWP 24978) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 19 (Thread 0x7f032db52640 (LWP 24977) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 18 (Thread 0x7f0317fff640 (LWP 24976) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 17 (Thread 0x7f032f355640 (LWP 24975) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 16 (Thread 0x7f5ebdb15640 (LWP 24974) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 15 (Thread 0x7f5ebd314640 (LWP 23921) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 14 (Thread 0x7f032e353640 (LWP 23920) "mariadbd"): #0 0x00007f5ed43a1e5d in syscall () from /lib64/libc.so.6 #1 0x000055d55ab733d8 in ssux_lock_impl::wr_wait(unsigned int) () #2 0x000055d55aad54ac in log_write_up_to(unsigned long, bool, completion_callback const*) () #3 0x000055d55ab70cca in srv_master_callback () #4 0x000055d55ac65f20 in tpool::thread_pool_generic::timer_generic::execute(void*) () #5 0x000055d55ac66982 in tpool::task::execute() () #6 0x000055d55ac64b1f in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #7 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #8 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #9 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 13 (Thread 0x7f032d351640 (LWP 23919) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 12 (Thread 0x7f5ebcb13640 (LWP 23488) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 11 (Thread 0x7f03167fc640 (LWP 22225) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 10 (Thread 0x7f5ebc2c7640 (LWP 331) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 9 (Thread 0x7f5ebc312640 (LWP 325) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 8 (Thread 0x7f5ed0083640 (LWP 321) "mariadbd"): #0 0x00007f5ed43ff560 in __lll_lock_wait () from /lib64/libc.so.6 #1 0x00007f5ed4405da4 in pthread_mutex_lock@@GLIBC_2.2.5 () from /lib64/libc.so.6 #2 0x000055d55aaf1dd3 in mtr_t::commit() () #3 0x000055d55ab30265 in row_ins_clust_index_entry_low(unsigned long, btr_latch_mode, dict_index_t*, unsigned long, dtuple_t*, unsigned long, que_thr_t*) () #4 0x000055d55ab34f2d in row_ins_clust_index_entry(dict_index_t*, dtuple_t*, que_thr_t*, unsigned long) () #5 0x000055d55ab3553c in row_ins_step(que_thr_t*) () #6 0x000055d55ab47561 in row_insert_for_mysql(unsigned char const*, row_prebuilt_t*, ins_mode_t) () #7 0x000055d55aa97037 in ha_innobase::write_row(unsigned char const*) () #8 0x000055d55a7c2678 in handler::ha_write_row(unsigned char const*) () #9 0x000055d55a5ffaee in copy_data_between_tables(THD*, TABLE*, TABLE*, bool, unsigned int, st_order*, unsigned long long*, unsigned long long*, Alter_info*, Alter_table_ctx*, bool, unsigned long long) [clone .constprop.0] () #10 0x000055d55a605517 in mysql_alter_table(THD*, st_mysql_const_lex_string const*, st_mysql_const_lex_string const*, Table_specification_st*, TABLE_LIST*, Recreate_info*, Alter_info*, unsigned int, st_order*, bool, bool) () #11 0x000055d55a6720e0 in Sql_cmd_alter_table::execute(THD*) () #12 0x000055d55a542cc5 in mysql_execute_command(THD*, bool) () #13 0x000055d55a543c11 in mysql_parse(THD*, char*, unsigned int, Parser_state*) () #14 0x000055d55a5465f5 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool) () #15 0x000055d55a548244 in do_command(THD*, bool) () #16 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #17 0x000055d55a66d3dd in handle_one_connection () #18 0x000055d55a9d7962 in pfs_spawn_thread () #19 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #20 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 7 (Thread 0x7f5ed00ce640 (LWP 236) "mariadbd"): #0 0x00007f5ed43b8b0a in sigtimedwait () from /lib64/libc.so.6 #1 0x000055d55a4327bb in signal_hand () #2 0x000055d55a9d7962 in pfs_spawn_thread () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 6 (Thread 0x7f5ed0119640 (LWP 235) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ba0 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a532810 in handle_manager () #3 0x000055d55a9d7962 in pfs_spawn_thread () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 5 (Thread 0x7f5ed0b25640 (LWP 232) "mariadbd"): #0 0x000055d55abd83fd in buf_flush_page_cleaner() () #1 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #2 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #3 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 4 (Thread 0x7f5ed1326640 (LWP 228) "mariadbd"): #0 0x00007f5ed43a1e5d in syscall () from /lib64/libc.so.6 #1 0x000055d55ac67069 in tpool::aio_linux::getevent_thread_routine(tpool::aio_linux*) () #2 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 3 (Thread 0x7f5ed1f49640 (LWP 227) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a96c280 in my_service_thread_sleep () #3 0x000055d55a9645de in ma_checkpoint_background () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 2 (Thread 0x7f5ed3edc640 (LWP 226) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55acd285f in timer_handler () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 1 (Thread 0x7f5ed401d900 (LWP 206) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a43ae0b in handle_connections_sockets() () #2 0x000055d55a43c0f5 in mysqld_main(int, char**) () #3 0x00007f5ed43a2eb0 in __libc_start_call_main () from /lib64/libc.so.6 #4 0x00007f5ed43a2f60 in __libc_start_main_impl () from /lib64/libc.so.6 #5 0x000055d55a42fc75 in _start () [Inferior 1 (process 206) detached] [New LWP 226] [New LWP 227] [New LWP 228] [New LWP 232] [New LWP 235] [New LWP 236] [New LWP 321] [New LWP 325] [New LWP 331] [New LWP 22225] [New LWP 23488] [New LWP 23919] [New LWP 23920] [New LWP 23921] [New LWP 24974] [New LWP 24975] [New LWP 24976] [New LWP 24977] [New LWP 24978] [New LWP 26929] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 Thread 21 (Thread 0x7f032cb50640 (LWP 26929) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 20 (Thread 0x7f032eb54640 (LWP 24978) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 19 (Thread 0x7f032db52640 (LWP 24977) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 18 (Thread 0x7f0317fff640 (LWP 24976) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 17 (Thread 0x7f032f355640 (LWP 24975) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 16 (Thread 0x7f5ebdb15640 (LWP 24974) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 15 (Thread 0x7f5ebd314640 (LWP 23921) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 14 (Thread 0x7f032e353640 (LWP 23920) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 13 (Thread 0x7f032d351640 (LWP 23919) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 12 (Thread 0x7f5ebcb13640 (LWP 23488) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 11 (Thread 0x7f03167fc640 (LWP 22225) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 10 (Thread 0x7f5ebc2c7640 (LWP 331) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 9 (Thread 0x7f5ebc312640 (LWP 325) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 8 (Thread 0x7f5ed0083640 (LWP 321) "mariadbd"): #0 0x000055d55ab1be2b in cmp_data(unsigned long, unsigned long, bool, unsigned char const*, unsigned long, unsigned char const*, unsigned long) () #1 0x000055d55ab1c1cf in cmp_dtuple_rec_with_match_low(dtuple_t const*, unsigned char const*, dict_index_t const*, unsigned short const*, unsigned long, unsigned long*) () #2 0x000055d55aaf8e22 in page_cur_search_with_match(dtuple_t const*, page_cur_mode_t, unsigned long*, unsigned long*, page_cur_t*, rtr_info*) () #3 0x000055d55abb752c in btr_cur_t::search_leaf(dtuple_t const*, page_cur_mode_t, btr_latch_mode, mtr_t*) () #4 0x000055d55ab31866 in row_ins_sec_index_entry_low(unsigned long, btr_latch_mode, dict_index_t*, mem_block_info_t*, mem_block_info_t*, dtuple_t*, unsigned long, que_thr_t*) () #5 0x000055d55ab35038 in row_ins_sec_index_entry(dict_index_t*, dtuple_t*, que_thr_t*, bool) () #6 0x000055d55ab356d5 in row_ins_step(que_thr_t*) () #7 0x000055d55ab47561 in row_insert_for_mysql(unsigned char const*, row_prebuilt_t*, ins_mode_t) () #8 0x000055d55aa97037 in ha_innobase::write_row(unsigned char const*) () #9 0x000055d55a7c2678 in handler::ha_write_row(unsigned char const*) () #10 0x000055d55a5ffaee in copy_data_between_tables(THD*, TABLE*, TABLE*, bool, unsigned int, st_order*, unsigned long long*, unsigned long long*, Alter_info*, Alter_table_ctx*, bool, unsigned long long) [clone .constprop.0] () #11 0x000055d55a605517 in mysql_alter_table(THD*, st_mysql_const_lex_string const*, st_mysql_const_lex_string const*, Table_specification_st*, TABLE_LIST*, Recreate_info*, Alter_info*, unsigned int, st_order*, bool, bool) () #12 0x000055d55a6720e0 in Sql_cmd_alter_table::execute(THD*) () #13 0x000055d55a542cc5 in mysql_execute_command(THD*, bool) () #14 0x000055d55a543c11 in mysql_parse(THD*, char*, unsigned int, Parser_state*) () #15 0x000055d55a5465f5 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool) () #16 0x000055d55a548244 in do_command(THD*, bool) () #17 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #18 0x000055d55a66d3dd in handle_one_connection () #19 0x000055d55a9d7962 in pfs_spawn_thread () #20 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #21 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 7 (Thread 0x7f5ed00ce640 (LWP 236) "mariadbd"): #0 0x00007f5ed43b8b0a in sigtimedwait () from /lib64/libc.so.6 #1 0x000055d55a4327bb in signal_hand () #2 0x000055d55a9d7962 in pfs_spawn_thread () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 6 (Thread 0x7f5ed0119640 (LWP 235) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ba0 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a532810 in handle_manager () #3 0x000055d55a9d7962 in pfs_spawn_thread () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 5 (Thread 0x7f5ed0b25640 (LWP 232) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55abd79b7 in buf_flush_page_cleaner() () #3 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 4 (Thread 0x7f5ed1326640 (LWP 228) "mariadbd"): #0 0x00007f5ed43a1e5d in syscall () from /lib64/libc.so.6 #1 0x000055d55ac67069 in tpool::aio_linux::getevent_thread_routine(tpool::aio_linux*) () #2 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 3 (Thread 0x7f5ed1f49640 (LWP 227) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a96c280 in my_service_thread_sleep () #3 0x000055d55a9645de in ma_checkpoint_background () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 2 (Thread 0x7f5ed3edc640 (LWP 226) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55acd285f in timer_handler () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 1 (Thread 0x7f5ed401d900 (LWP 206) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a43ae0b in handle_connections_sockets() () #2 0x000055d55a43c0f5 in mysqld_main(int, char**) () #3 0x00007f5ed43a2eb0 in __libc_start_call_main () from /lib64/libc.so.6 #4 0x00007f5ed43a2f60 in __libc_start_main_impl () from /lib64/libc.so.6 #5 0x000055d55a42fc75 in _start () [Inferior 1 (process 206) detached] [New LWP 226] [New LWP 227] [New LWP 228] [New LWP 232] [New LWP 235] [New LWP 236] [New LWP 321] [New LWP 325] [New LWP 331] [New LWP 22225] [New LWP 23488] [New LWP 23919] [New LWP 23920] [New LWP 23921] [New LWP 24974] [New LWP 24975] [New LWP 24976] [New LWP 24977] [New LWP 24978] [New LWP 26929] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 Thread 21 (Thread 0x7f032cb50640 (LWP 26929) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 20 (Thread 0x7f032eb54640 (LWP 24978) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 19 (Thread 0x7f032db52640 (LWP 24977) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 18 (Thread 0x7f0317fff640 (LWP 24976) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 17 (Thread 0x7f032f355640 (LWP 24975) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 16 (Thread 0x7f5ebdb15640 (LWP 24974) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 15 (Thread 0x7f5ebd314640 (LWP 23921) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 14 (Thread 0x7f032e353640 (LWP 23920) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 13 (Thread 0x7f032d351640 (LWP 23919) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 12 (Thread 0x7f5ebcb13640 (LWP 23488) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 11 (Thread 0x7f03167fc640 (LWP 22225) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4402172 in pthread_cond_clockwait@GLIBC_2.30 () from /lib64/libc.so.6 #2 0x000055d55ac641bd in tpool::thread_pool_generic::wait_for_tasks(std::unique_lock&, tpool::worker_data*) () #3 0x000055d55ac649b0 in tpool::thread_pool_generic::get_task(tpool::worker_data*, tpool::task**) () #4 0x000055d55ac64b2d in tpool::thread_pool_generic::worker_main(tpool::worker_data*) () #5 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #6 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #7 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 10 (Thread 0x7f5ebc2c7640 (LWP 331) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 9 (Thread 0x7f5ebc312640 (LWP 325) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a9338ab in vio_io_wait () #2 0x000055d55a933970 in vio_socket_io_wait () #3 0x000055d55a933a2b in vio_read () #4 0x000055d55a8f9b55 in my_real_read(st_net*, unsigned long*, char) () #5 0x000055d55a8fb030 in my_net_read_packet_reallen () #6 0x000055d55a8fb13d in my_net_read_packet () #7 0x000055d55a5481a1 in do_command(THD*, bool) () #8 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #9 0x000055d55a66d3dd in handle_one_connection () #10 0x000055d55a9d7962 in pfs_spawn_thread () #11 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #12 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 8 (Thread 0x7f5ed0083640 (LWP 321) "mariadbd"): #0 0x000055d55ab1c19c in cmp_dtuple_rec_with_match_low(dtuple_t const*, unsigned char const*, dict_index_t const*, unsigned short const*, unsigned long, unsigned long*) () #1 0x000055d55aaf89ba in page_cur_search_with_match(dtuple_t const*, page_cur_mode_t, unsigned long*, unsigned long*, page_cur_t*, rtr_info*) () #2 0x000055d55abb752c in btr_cur_t::search_leaf(dtuple_t const*, page_cur_mode_t, btr_latch_mode, mtr_t*) () #3 0x000055d55ab31866 in row_ins_sec_index_entry_low(unsigned long, btr_latch_mode, dict_index_t*, mem_block_info_t*, mem_block_info_t*, dtuple_t*, unsigned long, que_thr_t*) () #4 0x000055d55ab35038 in row_ins_sec_index_entry(dict_index_t*, dtuple_t*, que_thr_t*, bool) () #5 0x000055d55ab356d5 in row_ins_step(que_thr_t*) () #6 0x000055d55ab47561 in row_insert_for_mysql(unsigned char const*, row_prebuilt_t*, ins_mode_t) () #7 0x000055d55aa97037 in ha_innobase::write_row(unsigned char const*) () #8 0x000055d55a7c2678 in handler::ha_write_row(unsigned char const*) () #9 0x000055d55a5ffaee in copy_data_between_tables(THD*, TABLE*, TABLE*, bool, unsigned int, st_order*, unsigned long long*, unsigned long long*, Alter_info*, Alter_table_ctx*, bool, unsigned long long) [clone .constprop.0] () #10 0x000055d55a605517 in mysql_alter_table(THD*, st_mysql_const_lex_string const*, st_mysql_const_lex_string const*, Table_specification_st*, TABLE_LIST*, Recreate_info*, Alter_info*, unsigned int, st_order*, bool, bool) () #11 0x000055d55a6720e0 in Sql_cmd_alter_table::execute(THD*) () #12 0x000055d55a542cc5 in mysql_execute_command(THD*, bool) () #13 0x000055d55a543c11 in mysql_parse(THD*, char*, unsigned int, Parser_state*) () #14 0x000055d55a5465f5 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool) () #15 0x000055d55a548244 in do_command(THD*, bool) () #16 0x000055d55a66d08f in do_handle_one_connection(CONNECT*, bool) () #17 0x000055d55a66d3dd in handle_one_connection () #18 0x000055d55a9d7962 in pfs_spawn_thread () #19 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #20 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 7 (Thread 0x7f5ed00ce640 (LWP 236) "mariadbd"): #0 0x00007f5ed43b8b0a in sigtimedwait () from /lib64/libc.so.6 #1 0x000055d55a4327bb in signal_hand () #2 0x000055d55a9d7962 in pfs_spawn_thread () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 6 (Thread 0x7f5ed0119640 (LWP 235) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ba0 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a532810 in handle_manager () #3 0x000055d55a9d7962 in pfs_spawn_thread () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 5 (Thread 0x7f5ed0b25640 (LWP 232) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55abd79b7 in buf_flush_page_cleaner() () #3 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 4 (Thread 0x7f5ed1326640 (LWP 228) "mariadbd"): #0 0x00007f5ed43a1e5d in syscall () from /lib64/libc.so.6 #1 0x000055d55ac67069 in tpool::aio_linux::getevent_thread_routine(tpool::aio_linux*) () #2 0x00007f5ed47229d4 in execute_native_thread_routine () from /lib64/libstdc++.so.6 #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 3 (Thread 0x7f5ed1f49640 (LWP 227) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55a96c280 in my_service_thread_sleep () #3 0x000055d55a9645de in ma_checkpoint_background () #4 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #5 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 2 (Thread 0x7f5ed3edc640 (LWP 226) "mariadbd"): #0 0x00007f5ed43ff39a in __futex_abstimed_wait_common () from /lib64/libc.so.6 #1 0x00007f5ed4401ea4 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libc.so.6 #2 0x000055d55acd285f in timer_handler () #3 0x00007f5ed4402802 in start_thread () from /lib64/libc.so.6 #4 0x00007f5ed43a2450 in clone3 () from /lib64/libc.so.6 Thread 1 (Thread 0x7f5ed401d900 (LWP 206) "mariadbd"): #0 0x00007f5ed44a56ef in poll () from /lib64/libc.so.6 #1 0x000055d55a43ae0b in handle_connections_sockets() () #2 0x000055d55a43c0f5 in mysqld_main(int, char**) () #3 0x00007f5ed43a2eb0 in __libc_start_call_main () from /lib64/libc.so.6 #4 0x00007f5ed43a2f60 in __libc_start_main_impl () from /lib64/libc.so.6 #5 0x000055d55a42fc75 in _start () [Inferior 1 (process 206) detached]