GNU gdb (Ubuntu 7.11.1-0ubuntu1~16.04) 7.11.1 Copyright (C) 2016 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: . Find the GDB manual and other documentation resources online at: . For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from ../bin/mysqld...done. [New LWP 2386] [New LWP 2355] [New LWP 2359] [New LWP 2360] [New LWP 2368] [New LWP 2369] [New LWP 2371] [New LWP 2377] [New LWP 2384] [New LWP 2739] [New LWP 2364] [New LWP 2353] [New LWP 2365] [New LWP 2356] [New LWP 2366] [New LWP 2357] [New LWP 2370] [New LWP 2358] [New LWP 2372] [New LWP 2361] [New LWP 2376] [New LWP 2362] [New LWP 2379] [New LWP 2381] [New LWP 2363] [New LWP 2382] [New LWP 2373] [New LWP 2374] [New LWP 2383] [New LWP 2375] [New LWP 2378] [New LWP 2380] [New LWP 2737] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". warning: the debug information found in "/lib64/ld-2.23.so" does not match "/lib64/ld-linux-x86-64.so.2" (CRC mismatch). Core was generated by `/usr/local/mysql-maria-10.3-1.git/bin/mysqld --defaults-file=./my.cnf --basedir'. Program terminated with signal SIGSEGV, Segmentation fault. #0 __pthread_kill (threadid=, signo=signo@entry=11) at ../sysdeps/unix/sysv/linux/pthread_kill.c:62 62 ../sysdeps/unix/sysv/linux/pthread_kill.c: No such file or directory. [Current thread is 1 (Thread 0x7f2b7422e700 (LWP 2386))] (gdb) thread allpply all bt Thread 33 (Thread 0x7f2b741e4700 (LWP 2737)): #0 pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225 #1 0x000055c2be45c9cf in inline_mysql_cond_timedwait (src_file=0x55c2bebd9d68 "/home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/mysqld.cc", src_line=2952, abstime=0x7f2b741e3c60, mutex=0x55c2bf49f880 , that=0x55c2bf4a1e80 ) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/include/mysql/psi/mysql_thread.h:1186 #2 cache_thread (thd=0x7f2b000009a8) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/mysqld.cc:2951 #3 one_thread_per_connection_end (thd=0x7f2b000009a8, put_in_cache=) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/mysqld.cc:3040 #4 0x000055c2be5acbb3 in do_handle_one_connection (connect=connect@entry=0x55c2c160c628) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/sql_connect.cc:1373 #5 0x000055c2be5acda4 in handle_one_connection (arg=arg@entry=0x55c2c160c628) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/sql_connect.cc:1260 #6 0x000055c2be809f24 in pfs_spawn_thread (arg=0x55c2c160c888) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/perfschema/pfs.cc:1862 #7 0x00007f2b7dcb06ba in start_thread (arg=0x7f2b741e4700) at pthread_create.c:333 #8 0x00007f2b7d1453dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 32 (Thread 0x7f2b327fc700 (LWP 2380)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x000055c2be95bc66 in os_event::wait (this=0x55c2c163b920) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0event.cc:166 #2 os_event::wait_low (this=0x55c2c163b920, reset_sig_count=1, reset_sig_count@entry=0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0event.cc:336 #3 0x000055c2be95c105 in os_event_wait_low (event=, reset_sig_count=reset_sig_count@entry=0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0event.cc:535 #4 0x000055c2bea880cf in buf_resize_thread () at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/buf/buf0buf.cc:3063 #5 0x00007f2b7dcb06ba in start_thread (arg=0x7f2b327fc700) at pthread_create.c:333 #6 0x00007f2b7d1453dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 31 (Thread 0x7f2b337fe700 (LWP 2378)): #0 pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225 #1 0x000055c2be95bb21 in os_event::timed_wait (this=this@entry=0x55c2c1a263e0, abstime=abstime@entry=0x7f2b337fdaa0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0event.cc:286 #2 0x000055c2be95bd91 in os_event::wait_time_low (this=0x55c2c1a263e0, time_in_usec=time_in_usec@entry=5000000, reset_sig_count=reset_sig_count@entry=1) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0event.cc:413 #3 0x000055c2be95c0f5 in os_event_wait_time_low (event=, time_in_usec=time_in_usec@entry=5000000, reset_sig_count=reset_sig_count@entry=1) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0event.cc:518 #4 0x000055c2bea488c7 in ib_wqueue_timedwait (wq=wq@entry=0x55c2c1a16fb0, wait_in_usecs=wait_in_usecs@entry=5000000) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/ut/ut0wqueue.cc:163 #5 0x000055c2beb3848a in fts_optimize_thread (arg=0x55c2c1a16fb0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/fts/fts0opt.cc:3041 #6 0x00007f2b7dcb06ba in start_thread (arg=0x7f2b337fe700) at pthread_create.c:333 #7 0x00007f2b7d1453dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 30 (Thread 0x7f2b517fa700 (LWP 2375)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x000055c2be95bc66 in os_event::wait (this=0x55c2c163b6a0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0event.cc:166 #2 os_event::wait_low (this=0x55c2c163b6a0, reset_sig_count=10, reset_sig_count@entry=0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0event.cc:336 #3 0x000055c2be95c105 in os_event_wait_low (event=, reset_sig_count=reset_sig_count@entry=0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0event.cc:535 #4 0x000055c2be9ef7a6 in srv_resume_thread (slot=slot@entry=0x55c2c163b2a0, sig_count=sig_count@entry=0, wait=wait@entry=true, timeout_usec=timeout_usec@entry=0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/srv/srv0srv.cc:954 #5 0x000055c2be9f51ef in srv_worker_thread (arg=) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/srv/srv0srv.cc:2710 #6 0x00007f2b7dcb06ba in start_thread (arg=0x7f2b517fa700) at pthread_create.c:333 #7 0x00007f2b7d1453dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 29 (Thread 0x7f2b742c2700 (LWP 2383)): #0 do_sigwait (sig=0x7f2b742c1c48, set=) at ../sysdeps/unix/sysv/linux/sigwait.c:64 #1 __sigwait (set=set@entry=0x7f2b742c1ca0, sig=sig@entry=0x7f2b742c1c48) at ../sysdeps/unix/sysv/linux/sigwait.c:96 #2 0x000055c2be45b243 in signal_hand (arg=arg@entry=0x0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/mysqld.cc:3489 #3 0x000055c2be809f24 in pfs_spawn_thread (arg=0x55c2c1609218) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/perfschema/pfs.cc:1862 #4 0x00007f2b7dcb06ba in start_thread (arg=0x7f2b742c2700) at pthread_create.c:333 #5 0x00007f2b7d1453dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 28 (Thread 0x7f2b51ffb700 (LWP 2374)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x000055c2be95bc66 in os_event::wait (this=0x55c2c163b620) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0event.cc:166 #2 os_event::wait_low (this=0x55c2c163b620, reset_sig_count=10, reset_sig_count@entry=0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0event.cc:336 #3 0x000055c2be95c105 in os_event_wait_low (event=, reset_sig_count=reset_sig_count@entry=0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0event.cc:535 #4 0x000055c2be9ef7a6 in srv_resume_thread (slot=slot@entry=0x55c2c163b268, sig_count=sig_count@entry=0, wait=wait@entry=true, timeout_usec=timeout_usec@entry=0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/srv/srv0srv.cc:954 #5 0x000055c2be9f51ef in srv_worker_thread (arg=) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/srv/srv0srv.cc:2710 #6 0x00007f2b7dcb06ba in start_thread (arg=0x7f2b51ffb700) at pthread_create.c:333 #7 0x00007f2b7d1453dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 27 (Thread 0x7f2b527fc700 (LWP 2373)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x000055c2be95bc66 in os_event::wait (this=0x55c2c163b5a0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0event.cc:166 #2 os_event::wait_low (this=0x55c2c163b5a0, reset_sig_count=13, reset_sig_count@entry=0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0event.cc:336 #3 0x000055c2be95c105 in os_event_wait_low (event=, reset_sig_count=reset_sig_count@entry=0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0event.cc:535 #4 0x000055c2be9ef7a6 in srv_resume_thread (slot=slot@entry=0x55c2c163b230, sig_count=sig_count@entry=0, wait=wait@entry=true, timeout_usec=timeout_usec@entry=0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/srv/srv0srv.cc:954 #5 0x000055c2be9f51ef in srv_worker_thread (arg=) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/srv/srv0srv.cc:2710 #6 0x00007f2b7dcb06ba in start_thread (arg=0x7f2b527fc700) at pthread_create.c:333 #7 0x00007f2b7d1453dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 26 (Thread 0x7f2b317fa700 (LWP 2382)): #0 pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225 #1 0x000055c2be84c30e in inline_mysql_cond_timedwait (src_file=0x55c2becdfed0 "/home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/maria/ma_servicethread.c", src_line=116, abstime=0x7f2b317f9c70, mutex=0x55c2bfcd0f40 , that=0x55c2bfcd0f00 ) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/include/mysql/psi/mysql_thread.h:1186 #2 my_service_thread_sleep (control=control@entry=0x55c2bf415880 , sleep_time=) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/maria/ma_servicethread.c:115 #3 0x000055c2be845ba7 in ma_checkpoint_background (arg=arg@entry=0x1e) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/maria/ma_checkpoint.c:708 #4 0x000055c2be809f24 in pfs_spawn_thread (arg=0x55c2c1c11f98) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/perfschema/pfs.cc:1862 #5 0x00007f2b7dcb06ba in start_thread (arg=0x7f2b317fa700) at pthread_create.c:333 #6 0x00007f2b7d1453dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 25 (Thread 0x7f2b5b9b1700 (LWP 2363)): #0 0x00007f2b7ee3964a in ?? () from /lib/x86_64-linux-gnu/libaio.so.1 #1 0x000055c2be9515f9 in LinuxAIOHandler::collect (this=this@entry=0x7f2b5b9b0b00) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0file.cc:1886 #2 0x000055c2be95749c in LinuxAIOHandler::poll (this=this@entry=0x7f2b5b9b0b00, m1=m1@entry=0x7f2b5b9b0ba0, m2=m2@entry=0x7f2b5b9b0ba8, request=request@entry=0x7f2b5b9b0bb0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0file.cc:2031 #3 0x000055c2be95af53 in os_aio_linux_handler (request=0x7f2b5b9b0bb0, m2=0x7f2b5b9b0ba8, m1=0x7f2b5b9b0ba0, global_segment=7) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0file.cc:2085 #4 os_aio_handler (segment=segment@entry=7, m1=m1@entry=0x7f2b5b9b0ba0, m2=m2@entry=0x7f2b5b9b0ba8, request=request@entry=0x7f2b5b9b0bb0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0file.cc:5683 #5 0x000055c2beaf0eb6 in fil_aio_wait (segment=segment@entry=7) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/fil/fil0fil.cc:5481 #6 0x000055c2be9f67a8 in io_handler_thread (arg=) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/srv/srv0start.cc:327 #7 0x00007f2b7dcb06ba in start_thread (arg=0x7f2b5b9b1700) at pthread_create.c:333 #8 0x00007f2b7d1453dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 24 (Thread 0x7f2b31ffb700 (LWP 2381)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x000055c2be8d88d2 in inline_mysql_cond_wait (src_file=0x55c2bece6140 "/home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/handler/ha_innodb.cc", src_line=344, mutex=0x7f2b31ffacd0, that=0x7f2b31ffad00) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/include/mysql/psi/mysql_thread.h:1149 #2 thd_destructor_proxy () at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/handler/ha_innodb.cc:344 #3 0x000055c2be809f24 in pfs_spawn_thread (arg=0x55c2c1a26b18) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/perfschema/pfs.cc:1862 #4 0x00007f2b7dcb06ba in start_thread (arg=0x7f2b31ffb700) at pthread_create.c:333 #5 0x00007f2b7d1453dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 23 (Thread 0x7f2b32ffd700 (LWP 2379)): #0 0x00007f2b7dcb9c1d in nanosleep () at ../sysdeps/unix/syscall-template.S:84 #1 0x000055c2be95c3bc in os_thread_sleep (tm=tm@entry=1000000) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0thread.cc:245 #2 0x000055c2bea7a132 in btr_defragment_thread (arg=) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/btr/btr0defragment.cc:771 #3 0x00007f2b7dcb06ba in start_thread (arg=0x7f2b32ffd700) at pthread_create.c:333 #4 0x00007f2b7d1453dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 22 (Thread 0x7f2b5c1b2700 (LWP 2362)): #0 0x00007f2b7ee3964a in ?? () from /lib/x86_64-linux-gnu/libaio.so.1 #1 0x000055c2be9515f9 in LinuxAIOHandler::collect (this=this@entry=0x7f2b5c1b1b00) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0file.cc:1886 #2 0x000055c2be95749c in LinuxAIOHandler::poll (this=this@entry=0x7f2b5c1b1b00, m1=m1@entry=0x7f2b5c1b1ba0, m2=m2@entry=0x7f2b5c1b1ba8, request=request@entry=0x7f2b5c1b1bb0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0file.cc:2031 #3 0x000055c2be95af53 in os_aio_linux_handler (request=0x7f2b5c1b1bb0, m2=0x7f2b5c1b1ba8, m1=0x7f2b5c1b1ba0, global_segment=6) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0file.cc:2085 #4 os_aio_handler (segment=segment@entry=6, m1=m1@entry=0x7f2b5c1b1ba0, m2=m2@entry=0x7f2b5c1b1ba8, request=request@entry=0x7f2b5c1b1bb0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0file.cc:5683 #5 0x000055c2beaf0eb6 in fil_aio_wait (segment=segment@entry=6) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/fil/fil0fil.cc:5481 #6 0x000055c2be9f67a8 in io_handler_thread (arg=) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/srv/srv0start.cc:327 #7 0x00007f2b7dcb06ba in start_thread (arg=0x7f2b5c1b2700) at pthread_create.c:333 #8 0x00007f2b7d1453dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 21 (Thread 0x7f2b50ff9700 (LWP 2376)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x000055c2be95bc66 in os_event::wait (this=0x55c2c163b820) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0event.cc:166 #2 os_event::wait_low (this=0x55c2c163b820, reset_sig_count=1, reset_sig_count@entry=0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0event.cc:336 #3 0x000055c2be95c105 in os_event_wait_low (event=, reset_sig_count=reset_sig_count@entry=0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0event.cc:535 #4 0x000055c2bea912c6 in buf_dump_thread () at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/buf/buf0dump.cc:815 #5 0x00007f2b7dcb06ba in start_thread (arg=0x7f2b50ff9700) at pthread_create.c:333 #6 0x00007f2b7d1453dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 20 (Thread 0x7f2b5c9b3700 (LWP 2361)): #0 0x00007f2b7ee3964a in ?? () from /lib/x86_64-linux-gnu/libaio.so.1 #1 0x000055c2be9515f9 in LinuxAIOHandler::collect (this=this@entry=0x7f2b5c9b2b00) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0file.cc:1886 #2 0x000055c2be95749c in LinuxAIOHandler::poll (this=this@entry=0x7f2b5c9b2b00, m1=m1@entry=0x7f2b5c9b2ba0, m2=m2@entry=0x7f2b5c9b2ba8, request=request@entry=0x7f2b5c9b2bb0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0file.cc:2031 #3 0x000055c2be95af53 in os_aio_linux_handler (request=0x7f2b5c9b2bb0, m2=0x7f2b5c9b2ba8, m1=0x7f2b5c9b2ba0, global_segment=5) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0file.cc:2085 #4 os_aio_handler (segment=segment@entry=5, m1=m1@entry=0x7f2b5c9b2ba0, m2=m2@entry=0x7f2b5c9b2ba8, request=request@entry=0x7f2b5c9b2bb0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0file.cc:5683 #5 0x000055c2beaf0eb6 in fil_aio_wait (segment=segment@entry=5) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/fil/fil0fil.cc:5481 #6 0x000055c2be9f67a8 in io_handler_thread (arg=) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/srv/srv0start.cc:327 #7 0x00007f2b7dcb06ba in start_thread (arg=0x7f2b5c9b3700) at pthread_create.c:333 #8 0x00007f2b7d1453dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 19 (Thread 0x7f2b52ffd700 (LWP 2372)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x000055c2be95bc66 in os_event::wait (this=0x55c2c163b520) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0event.cc:166 #2 os_event::wait_low (this=0x55c2c163b520, reset_sig_count=6) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0event.cc:336 #3 0x000055c2be95c105 in os_event_wait_low (event=, reset_sig_count=) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0event.cc:535 #4 0x000055c2be9ef7a6 in srv_resume_thread (slot=slot@entry=0x55c2c163b1f8, sig_count=, wait=, timeout_usec=) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/srv/srv0srv.cc:954 #5 0x000055c2be9f5bc0 in srv_purge_coordinator_suspend (rseg_history_len=, slot=, thd=) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/srv/srv0srv.cc:2867 #6 srv_purge_coordinator_thread (arg=) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/srv/srv0srv.cc:2954 #7 0x00007f2b7dcb06ba in start_thread (arg=0x7f2b52ffd700) at pthread_create.c:333 #8 0x00007f2b7d1453dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 18 (Thread 0x7f2b5e1b6700 (LWP 2358)): #0 0x00007f2b7ee3964a in ?? () from /lib/x86_64-linux-gnu/libaio.so.1 #1 0x000055c2be9515f9 in LinuxAIOHandler::collect (this=this@entry=0x7f2b5e1b5b00) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0file.cc:1886 #2 0x000055c2be95749c in LinuxAIOHandler::poll (this=this@entry=0x7f2b5e1b5b00, m1=m1@entry=0x7f2b5e1b5ba0, m2=m2@entry=0x7f2b5e1b5ba8, request=request@entry=0x7f2b5e1b5bb0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0file.cc:2031 #3 0x000055c2be95af53 in os_aio_linux_handler (request=0x7f2b5e1b5bb0, m2=0x7f2b5e1b5ba8, m1=0x7f2b5e1b5ba0, global_segment=2) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0file.cc:2085 #4 os_aio_handler (segment=segment@entry=2, m1=m1@entry=0x7f2b5e1b5ba0, m2=m2@entry=0x7f2b5e1b5ba8, request=request@entry=0x7f2b5e1b5bb0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0file.cc:5683 #5 0x000055c2beaf0eb6 in fil_aio_wait (segment=segment@entry=2) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/fil/fil0fil.cc:5481 #6 0x000055c2be9f67a8 in io_handler_thread (arg=) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/srv/srv0start.cc:327 #7 0x00007f2b7dcb06ba in start_thread (arg=0x7f2b5e1b6700) at pthread_create.c:333 #8 0x00007f2b7d1453dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 17 (Thread 0x7f2b597a8700 (LWP 2370)): #0 pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225 #1 0x000055c2be95bb21 in os_event::timed_wait (this=this@entry=0x55c2c163b7a0, abstime=abstime@entry=0x7f2b597a7d10) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0event.cc:286 #2 0x000055c2be95bd91 in os_event::wait_time_low (this=0x55c2c163b7a0, time_in_usec=time_in_usec@entry=5000000, reset_sig_count=1) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0event.cc:413 #3 0x000055c2be95c0f5 in os_event_wait_time_low (event=, time_in_usec=time_in_usec@entry=5000000, reset_sig_count=) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0event.cc:518 #4 0x000055c2be9f45b4 in srv_monitor_thread () at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/srv/srv0srv.cc:1775 #5 0x00007f2b7dcb06ba in start_thread (arg=0x7f2b597a8700) at pthread_create.c:333 #6 0x00007f2b7d1453dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 16 (Thread 0x7f2b5e9b7700 (LWP 2357)): #0 0x00007f2b7ee3964a in ?? () from /lib/x86_64-linux-gnu/libaio.so.1 #1 0x000055c2be9515f9 in LinuxAIOHandler::collect (this=this@entry=0x7f2b5e9b6b00) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0file.cc:1886 #2 0x000055c2be95749c in LinuxAIOHandler::poll (this=this@entry=0x7f2b5e9b6b00, m1=m1@entry=0x7f2b5e9b6ba0, m2=m2@entry=0x7f2b5e9b6ba8, request=request@entry=0x7f2b5e9b6bb0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0file.cc:2031 #3 0x000055c2be95af53 in os_aio_linux_handler (request=0x7f2b5e9b6bb0, m2=0x7f2b5e9b6ba8, m1=0x7f2b5e9b6ba0, global_segment=1) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0file.cc:2085 #4 os_aio_handler (segment=segment@entry=1, m1=m1@entry=0x7f2b5e9b6ba0, m2=m2@entry=0x7f2b5e9b6ba8, request=request@entry=0x7f2b5e9b6bb0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0file.cc:5683 #5 0x000055c2beaf0eb6 in fil_aio_wait (segment=segment@entry=1) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/fil/fil0fil.cc:5481 #6 0x000055c2be9f67a8 in io_handler_thread (arg=) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/srv/srv0start.cc:327 #7 0x00007f2b7dcb06ba in start_thread (arg=0x7f2b5e9b7700) at pthread_create.c:333 #8 0x00007f2b7d1453dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 15 (Thread 0x7f2b5a1ae700 (LWP 2366)): #0 pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225 #1 0x000055c2be95bb21 in os_event::timed_wait (this=this@entry=0x55c2c163b8a0, abstime=abstime@entry=0x7f2b5a1ad990) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0event.cc:286 #2 0x000055c2be95bd91 in os_event::wait_time_low (this=0x55c2c163b8a0, time_in_usec=, reset_sig_count=reset_sig_count@entry=2) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0event.cc:413 #3 0x000055c2be95c0f5 in os_event_wait_time_low (event=, time_in_usec=, reset_sig_count=reset_sig_count@entry=2) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0event.cc:518 #4 0x000055c2bea9ab4e in pc_sleep_if_needed (sig_count=2, next_loop_time=1501248540506) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/buf/buf0flu.cc:2711 #5 buf_flush_page_cleaner_coordinator (arg=) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/buf/buf0flu.cc:3213 #6 0x00007f2b7dcb06ba in start_thread (arg=0x7f2b5a1ae700) at pthread_create.c:333 #7 0x00007f2b7d1453dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 14 (Thread 0x7f2b5f1b8700 (LWP 2356)): #0 0x00007f2b7ee3964a in ?? () from /lib/x86_64-linux-gnu/libaio.so.1 #1 0x000055c2be9515f9 in LinuxAIOHandler::collect (this=this@entry=0x7f2b5f1b7b00) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0file.cc:1886 #2 0x000055c2be95749c in LinuxAIOHandler::poll (this=this@entry=0x7f2b5f1b7b00, m1=m1@entry=0x7f2b5f1b7ba0, m2=m2@entry=0x7f2b5f1b7ba8, request=request@entry=0x7f2b5f1b7bb0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0file.cc:2031 #3 0x000055c2be95af53 in os_aio_linux_handler (request=0x7f2b5f1b7bb0, m2=0x7f2b5f1b7ba8, m1=0x7f2b5f1b7ba0, global_segment=0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0file.cc:2085 #4 os_aio_handler (segment=segment@entry=0, m1=m1@entry=0x7f2b5f1b7ba0, m2=m2@entry=0x7f2b5f1b7ba8, request=request@entry=0x7f2b5f1b7bb0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0file.cc:5683 #5 0x000055c2beaf0eb6 in fil_aio_wait (segment=segment@entry=0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/fil/fil0fil.cc:5481 #6 0x000055c2be9f67a8 in io_handler_thread (arg=) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/srv/srv0start.cc:327 #7 0x00007f2b7dcb06ba in start_thread (arg=0x7f2b5f1b8700) at pthread_create.c:333 #8 0x00007f2b7d1453dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 13 (Thread 0x7f2b5a9af700 (LWP 2365)): #0 0x00007f2b7ee3964a in ?? () from /lib/x86_64-linux-gnu/libaio.so.1 #1 0x000055c2be9515f9 in LinuxAIOHandler::collect (this=this@entry=0x7f2b5a9aeb00) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0file.cc:1886 #2 0x000055c2be95749c in LinuxAIOHandler::poll (this=this@entry=0x7f2b5a9aeb00, m1=m1@entry=0x7f2b5a9aeba0, m2=m2@entry=0x7f2b5a9aeba8, request=request@entry=0x7f2b5a9aebb0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0file.cc:2031 #3 0x000055c2be95af53 in os_aio_linux_handler (request=0x7f2b5a9aebb0, m2=0x7f2b5a9aeba8, m1=0x7f2b5a9aeba0, global_segment=9) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0file.cc:2085 #4 os_aio_handler (segment=segment@entry=9, m1=m1@entry=0x7f2b5a9aeba0, m2=m2@entry=0x7f2b5a9aeba8, request=request@entry=0x7f2b5a9aebb0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0file.cc:5683 #5 0x000055c2beaf0eb6 in fil_aio_wait (segment=segment@entry=9) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/fil/fil0fil.cc:5481 #6 0x000055c2be9f67a8 in io_handler_thread (arg=) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/srv/srv0start.cc:327 #7 0x00007f2b7dcb06ba in start_thread (arg=0x7f2b5a9af700) at pthread_create.c:333 #8 0x00007f2b7d1453dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 12 (Thread 0x7f2b7f5cf8c0 (LWP 2353)): #0 0x00007f2b7d13970d in poll () at ../sysdeps/unix/syscall-template.S:84 #1 0x00007f2b7d15707e in __poll_chk (fds=, nfds=, timeout=, fdslen=) at poll_chk.c:27 #2 0x000055c2be45d6d9 in poll (__timeout=-1, __nfds=2, __fds=0x7ffe9ac44770) at /usr/include/x86_64-linux-gnu/bits/poll2.h:41 #3 handle_connections_sockets () at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/mysqld.cc:6575 #4 0x000055c2be465493 in mysqld_main (argc=13, argv=0x55c2c14bee68) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/mysqld.cc:6041 #5 0x00007f2b7d05e830 in __libc_start_main (main=0x55c2be444230 , argc=8, argv=0x7ffe9ac44e98, init=, fini=, rtld_fini=, stack_end=0x7ffe9ac44e88) at ../csu/libc-start.c:291 #6 0x000055c2be458bd9 in _start () Thread 11 (Thread 0x7f2b5b1b0700 (LWP 2364)): #0 0x00007f2b7ee3964a in ?? () from /lib/x86_64-linux-gnu/libaio.so.1 #1 0x000055c2be9515f9 in LinuxAIOHandler::collect (this=this@entry=0x7f2b5b1afb00) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0file.cc:1886 #2 0x000055c2be95749c in LinuxAIOHandler::poll (this=this@entry=0x7f2b5b1afb00, m1=m1@entry=0x7f2b5b1afba0, m2=m2@entry=0x7f2b5b1afba8, request=request@entry=0x7f2b5b1afbb0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0file.cc:2031 #3 0x000055c2be95af53 in os_aio_linux_handler (request=0x7f2b5b1afbb0, m2=0x7f2b5b1afba8, m1=0x7f2b5b1afba0, global_segment=8) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0file.cc:2085 #4 os_aio_handler (segment=segment@entry=8, m1=m1@entry=0x7f2b5b1afba0, m2=m2@entry=0x7f2b5b1afba8, request=request@entry=0x7f2b5b1afbb0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0file.cc:5683 #5 0x000055c2beaf0eb6 in fil_aio_wait (segment=segment@entry=8) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/fil/fil0fil.cc:5481 #6 0x000055c2be9f67a8 in io_handler_thread (arg=) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/srv/srv0start.cc:327 #7 0x00007f2b7dcb06ba in start_thread (arg=0x7f2b5b1b0700) at pthread_create.c:333 #8 0x00007f2b7d1453dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 10 (Thread 0x7f2b7419a700 (LWP 2739)): #0 pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225 #1 0x000055c2be5b4fd0 in inline_mysql_cond_timedwait (src_file=0x55c2bebfa5d0 "/home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/mdl.cc", src_line=1092, abstime=0x7f2b741979b0, mutex=0x7f2b0c000aa8, that=0x7f2b0c000ad8) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/include/mysql/psi/mysql_thread.h:1186 #2 MDL_wait::timed_wait (this=this@entry=0x7f2b0c000aa8, owner=owner@entry=0x7f2b0c000a58, abs_timeout=abs_timeout@entry=0x7f2b741979b0, set_status_on_timeout=set_status_on_timeout@entry=true, wait_state_name=) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/mdl.cc:1092 #3 0x000055c2be586dd6 in TABLE_SHARE::wait_for_old_version (this=0x7f2b001b5420, thd=thd@entry=0x7f2b0c0009a8, abstime=abstime@entry=0x7f2b741979b0, deadlock_weight=deadlock_weight@entry=100) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/table.cc:4369 #4 0x000055c2be4a1ddb in close_cached_tables (thd=thd@entry=0x7f2b0c0009a8, tables=tables@entry=0x0, wait_for_refresh=wait_for_refresh@entry=true, timeout=) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/sql_base.cc:453 #5 0x000055c2be5c67c1 in reload_acl_and_cache (thd=thd@entry=0x7f2b0c0009a8, options=4, tables=tables@entry=0x0, write_to_binlog=write_to_binlog@entry=0x7f2b74197bf0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/sql_reload.cc:326 #6 0x000055c2be4e8e57 in mysql_execute_command (thd=thd@entry=0x7f2b0c0009a8) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/sql_parse.cc:5510 #7 0x000055c2be4f071d in mysql_parse (thd=0x7f2b0c0009a8, rawbuf=, length=12, parser_state=0x7f2b741990d0, is_com_multi=, is_next_command=) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/sql_parse.cc:7918 #8 0x000055c2be4f31cd in dispatch_command (command=command@entry=COM_QUERY, thd=thd@entry=0x7f2b0c0009a8, packet=packet@entry=0x7f2b0c006dc9 "FLUSH TABLES", packet_length=packet_length@entry=12, is_com_multi=is_com_multi@entry=false, is_next_command=is_next_command@entry=false) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/sql_parse.cc:1817 #9 0x000055c2be4f3a31 in do_command (thd=0x7f2b0c0009a8) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/sql_parse.cc:1380 #10 0x000055c2be5acc34 in do_handle_one_connection (connect=connect@entry=0x55c2c1d9d7b8) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/sql_connect.cc:1354 #11 0x000055c2be5acda4 in handle_one_connection (arg=arg@entry=0x55c2c1d9d7b8) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/sql_connect.cc:1260 #12 0x000055c2be809f24 in pfs_spawn_thread (arg=0x55c2c160cdd8) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/perfschema/pfs.cc:1862 #13 0x00007f2b7dcb06ba in start_thread (arg=0x7f2b7419a700) at pthread_create.c:333 #14 0x00007f2b7d1453dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 9 (Thread 0x7f2b74278700 (LWP 2384)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x000055c2be4770c7 in inline_mysql_cond_wait (src_file=0x55c2bebe3938 "/home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/slave.cc", src_line=334, mutex=, that=) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/include/mysql/psi/mysql_thread.h:1149 #2 handle_slave_background (arg=arg@entry=0x0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/slave.cc:334 #3 0x000055c2be809f24 in pfs_spawn_thread (arg=0x55c2c1d87048) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/perfschema/pfs.cc:1862 #4 0x00007f2b7dcb06ba in start_thread (arg=0x7f2b74278700) at pthread_create.c:333 #5 0x00007f2b7d1453dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 8 (Thread 0x7f2b33fff700 (LWP 2377)): #0 pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225 #1 0x000055c2be95bb21 in os_event::timed_wait (this=this@entry=0x55c2c19e2640, abstime=abstime@entry=0x7f2b33ffec20) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0event.cc:286 #2 0x000055c2be95bd91 in os_event::wait_time_low (this=0x55c2c19e2640, time_in_usec=time_in_usec@entry=10000000, reset_sig_count=1, reset_sig_count@entry=0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0event.cc:413 #3 0x000055c2be95c0f5 in os_event_wait_time_low (event=, time_in_usec=time_in_usec@entry=10000000, reset_sig_count=reset_sig_count@entry=0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0event.cc:518 #4 0x000055c2beae7282 in dict_stats_thread () at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/dict/dict0stats_bg.cc:420 #5 0x00007f2b7dcb06ba in start_thread (arg=0x7f2b33fff700) at pthread_create.c:333 #6 0x00007f2b7d1453dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 7 (Thread 0x7f2b537fe700 (LWP 2371)): #0 0x00007f2b7dcb9c1d in nanosleep () at ../sysdeps/unix/syscall-template.S:84 #1 0x000055c2be95c3bc in os_thread_sleep (tm=tm@entry=1000000) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0thread.cc:245 #2 0x000055c2be9f4aa0 in srv_master_sleep () at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/srv/srv0srv.cc:2521 #3 srv_master_thread (arg=) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/srv/srv0srv.cc:2568 #4 0x00007f2b7dcb06ba in start_thread (arg=0x7f2b537fe700) at pthread_create.c:333 #5 0x00007f2b7d1453dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 6 (Thread 0x7f2b53fff700 (LWP 2369)): #0 pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225 #1 0x000055c2be95bb21 in os_event::timed_wait (this=this@entry=0x55c2c163b720, abstime=abstime@entry=0x7f2b53ffeae0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0event.cc:286 #2 0x000055c2be95bd91 in os_event::wait_time_low (this=0x55c2c163b720, time_in_usec=time_in_usec@entry=1000000, reset_sig_count=1) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0event.cc:413 #3 0x000055c2be95c0f5 in os_event_wait_time_low (event=, time_in_usec=time_in_usec@entry=1000000, reset_sig_count=) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0event.cc:518 #4 0x000055c2be9f3782 in srv_error_monitor_thread () at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/srv/srv0srv.cc:2000 #5 0x00007f2b7dcb06ba in start_thread (arg=0x7f2b53fff700) at pthread_create.c:333 #6 0x00007f2b7d1453dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 5 (Thread 0x7f2b58fa7700 (LWP 2368)): #0 pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225 #1 0x000055c2be95bb21 in os_event::timed_wait (this=this@entry=0x55c2c19debd0, abstime=abstime@entry=0x7f2b58fa6bf0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0event.cc:286 #2 0x000055c2be95bd91 in os_event::wait_time_low (this=this@entry=0x55c2c19debd0, time_in_usec=time_in_usec@entry=1000000, reset_sig_count=1) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0event.cc:413 #3 0x000055c2be95c0f5 in os_event_wait_time_low (event=event@entry=0x55c2c19debd0, time_in_usec=time_in_usec@entry=1000000, reset_sig_count=) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0event.cc:518 #4 0x000055c2be92b832 in lock_wait_timeout_thread () at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/lock/lock0wait.cc:530 #5 0x00007f2b7dcb06ba in start_thread (arg=0x7f2b58fa7700) at pthread_create.c:333 #6 0x00007f2b7d1453dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 4 (Thread 0x7f2b5d1b4700 (LWP 2360)): #0 0x00007f2b7ee3964a in ?? () from /lib/x86_64-linux-gnu/libaio.so.1 #1 0x000055c2be9515f9 in LinuxAIOHandler::collect (this=this@entry=0x7f2b5d1b3b00) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0file.cc:1886 #2 0x000055c2be95749c in LinuxAIOHandler::poll (this=this@entry=0x7f2b5d1b3b00, m1=m1@entry=0x7f2b5d1b3ba0, m2=m2@entry=0x7f2b5d1b3ba8, request=request@entry=0x7f2b5d1b3bb0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0file.cc:2031 #3 0x000055c2be95af53 in os_aio_linux_handler (request=0x7f2b5d1b3bb0, m2=0x7f2b5d1b3ba8, m1=0x7f2b5d1b3ba0, global_segment=4) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0file.cc:2085 #4 os_aio_handler (segment=segment@entry=4, m1=m1@entry=0x7f2b5d1b3ba0, m2=m2@entry=0x7f2b5d1b3ba8, request=request@entry=0x7f2b5d1b3bb0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0file.cc:5683 #5 0x000055c2beaf0eb6 in fil_aio_wait (segment=segment@entry=4) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/fil/fil0fil.cc:5481 #6 0x000055c2be9f67a8 in io_handler_thread (arg=) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/srv/srv0start.cc:327 #7 0x00007f2b7dcb06ba in start_thread (arg=0x7f2b5d1b4700) at pthread_create.c:333 #8 0x00007f2b7d1453dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 3 (Thread 0x7f2b5d9b5700 (LWP 2359)): #0 0x00007f2b7ee3964a in ?? () from /lib/x86_64-linux-gnu/libaio.so.1 #1 0x000055c2be9515f9 in LinuxAIOHandler::collect (this=this@entry=0x7f2b5d9b4b00) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0file.cc:1886 #2 0x000055c2be95749c in LinuxAIOHandler::poll (this=this@entry=0x7f2b5d9b4b00, m1=m1@entry=0x7f2b5d9b4ba0, m2=m2@entry=0x7f2b5d9b4ba8, request=request@entry=0x7f2b5d9b4bb0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0file.cc:2031 #3 0x000055c2be95af53 in os_aio_linux_handler (request=0x7f2b5d9b4bb0, m2=0x7f2b5d9b4ba8, m1=0x7f2b5d9b4ba0, global_segment=3) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0file.cc:2085 #4 os_aio_handler (segment=segment@entry=3, m1=m1@entry=0x7f2b5d9b4ba0, m2=m2@entry=0x7f2b5d9b4ba8, request=request@entry=0x7f2b5d9b4bb0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/os/os0file.cc:5683 #5 0x000055c2beaf0eb6 in fil_aio_wait (segment=segment@entry=3) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/fil/fil0fil.cc:5481 #6 0x000055c2be9f67a8 in io_handler_thread (arg=) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/innobase/srv/srv0start.cc:327 #7 0x00007f2b7dcb06ba in start_thread (arg=0x7f2b5d9b5700) at pthread_create.c:333 #8 0x00007f2b7d1453dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 2 (Thread 0x7f2b76a05700 (LWP 2355)): #0 pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225 #1 0x000055c2beb9e526 in inline_mysql_cond_timedwait (that=0x55c2bfd231e0 , mutex=0x55c2bfd23220 , src_file=0x55c2bed286e0 "/home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/mysys/thr_timer.c", src_line=292, abstime=0x7f2b76a04cf0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/include/mysql/psi/mysql_thread.h:1186 #2 timer_handler (arg=arg@entry=0x0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/mysys/thr_timer.c:292 #3 0x000055c2be809f24 in pfs_spawn_thread (arg=0x55c2c15dce08) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/perfschema/pfs.cc:1862 #4 0x00007f2b7dcb06ba in start_thread (arg=0x7f2b76a05700) at pthread_create.c:333 #5 0x00007f2b7d1453dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 1 (Thread 0x7f2b7422e700 (LWP 2386)): #0 __pthread_kill (threadid=, signo=signo@entry=11) at ../sysdeps/unix/sysv/linux/pthread_kill.c:62 #1 0x000055c2beb9a19a in my_write_core (sig=sig@entry=11) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/mysys/stacktrace.c:477 #2 0x000055c2be6934e4 in handle_fatal_signal (sig=11) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/signal_handler.cc:299 #3 #4 0x00007f2b7dcb5edc in _xend () at pthread_rwlock_unlock.c:38 #5 __GI___pthread_rwlock_unlock (rwlock=rwlock@entry=0x7f2b001b58e8) at pthread_rwlock_unlock.c:38 #6 0x000055c2be607285 in inline_mysql_rwlock_unlock (that=) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/include/mysql/psi/mysql_thread.h:1055 #7 SEQUENCE::write_unlock (this=this@entry=0x7f2b001b5880, table=) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/sql_sequence.cc:373 #8 0x000055c2be607816 in SEQUENCE::read_initial_values (this=0x7f2b001b5880, table_arg=) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/sql_sequence.cc:457 #9 0x000055c2beb7ceb3 in ha_sequence::open (this=0x7f2b084bb620, name=, mode=, flags=) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/ha_sequence.cc:110 #10 0x000055c2be69752a in handler::ha_open (this=0x7f2b084bb620, table_arg=table_arg@entry=0x7f2b084ba308, name=0x7f2b001b5830 "./test/s1", mode=mode@entry=2, test_if_locked=test_if_locked@entry=18) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/handler.cc:2516 #11 0x000055c2be5899a2 in open_table_from_share (thd=thd@entry=0x7f2b080009a8, share=share@entry=0x7f2b001b5420, alias=, db_stat=db_stat@entry=33, prgflag=prgflag@entry=8, ha_open_flags=18, outparam=, is_create_table=) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/table.cc:3310 #12 0x000055c2be4a1645 in open_table (thd=thd@entry=0x7f2b080009a8, table_list=table_list@entry=0x7f2b084765e0, ot_ctx=ot_ctx@entry=0x7f2b74227f30) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/sql_base.cc:1877 #13 0x000055c2be4a3f03 in open_and_process_table (ot_ctx=0x7f2b74227f30, has_prelocking_list=false, prelocking_strategy=0x7f2b74227fd0, flags=1090, counter=0x7f2b74227fcc, tables=0x7f2b084765e0, lex=0x7f2b74228130, thd=0x7f2b080009a8) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/sql_base.cc:3414 #14 open_tables (thd=thd@entry=0x7f2b080009a8, options=..., start=start@entry=0x7f2b74227fb8, counter=counter@entry=0x7f2b74227fcc, flags=1090, prelocking_strategy=prelocking_strategy@entry=0x7f2b74227fd0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/sql_base.cc:3934 #15 0x000055c2be4a477a in open_tables (prelocking_strategy=0x7f2b74227fd0, flags=, counter=0x7f2b74227fcc, tables=0x7f2b74227fb8, thd=0x7f2b080009a8) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/sql_base.h:236 #16 open_normal_and_derived_tables (thd=thd@entry=0x7f2b080009a8, tables=tables@entry=0x7f2b084765e0, flags=, dt_phases=dt_phases@entry=34) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/sql_base.cc:4752 #17 0x000055c2be4a480e in open_tables_only_view_structure (thd=thd@entry=0x7f2b080009a8, table_list=table_list@entry=0x7f2b084765e0, can_deadlock=can_deadlock@entry=false) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/sql_base.cc:4803 #18 0x000055c2be53d22a in fill_schema_table_by_open (thd=thd@entry=0x7f2b080009a8, is_show_fields_or_keys=is_show_fields_or_keys@entry=false, table=table@entry=0x7f2b0801f6a0, schema_table=schema_table@entry=0x55c2bf3fab80 , orig_db_name=orig_db_name@entry=0x7f2b080150e8, orig_table_name=orig_table_name@entry=0x7f2b08476578, open_tables_state_backup=0x7f2b74229850, can_deadlock=false) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/sql_show.cc:4358 #19 0x000055c2be54e494 in get_all_tables (thd=0x7f2b080009a8, tables=0x7f2b0800f398, cond=) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/sql_show.cc:4997 #20 0x000055c2be54fa5f in get_schema_tables_result (join=join@entry=0x7f2b08011318, executed_place=executed_place@entry=PROCESSED_BY_JOIN_EXEC) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/sql_show.cc:8368 #21 0x000055c2be5383be in JOIN::exec_inner (this=this@entry=0x7f2b08011318) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/sql_select.cc:3442 #22 0x000055c2be538a39 in JOIN::exec (this=this@entry=0x7f2b08011318) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/sql_select.cc:3280 #23 0x000055c2be538b7e in mysql_select (thd=thd@entry=0x7f2b080009a8, tables=0x7f2b0800f398, wild_num=, fields=..., conds=0x0, og_num=0, order=0x0, group=0x0, having=0x0, proc_param=0x0, select_options=2684619520, result=0x7f2b080112f8, unit=0x7f2b080043f0, select_lex=0x7f2b08004b30) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/sql_select.cc:3673 #24 0x000055c2be5394c8 in handle_select (thd=thd@entry=0x7f2b080009a8, lex=lex@entry=0x7f2b08004328, result=result@entry=0x7f2b080112f8, setup_tables_done_option=setup_tables_done_option@entry=0) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/sql_select.cc:373 #25 0x000055c2be4e18f6 in execute_sqlcom_select (thd=thd@entry=0x7f2b080009a8, all_tables=0x7f2b0800f398) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/sql_parse.cc:6465 #26 0x000055c2be4edaa0 in mysql_execute_command (thd=thd@entry=0x7f2b080009a8) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/sql_parse.cc:3581 #27 0x000055c2be4f071d in mysql_parse (thd=0x7f2b080009a8, rawbuf=, length=39, parser_state=0x7f2b7422d0d0, is_com_multi=, is_next_command=) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/sql_parse.cc:7918 #28 0x000055c2be4f31cd in dispatch_command (command=command@entry=COM_QUERY, thd=thd@entry=0x7f2b080009a8, packet=packet@entry=0x7f2b08006dc9 "SELECT * FROM information_schema.TABLES", packet_length=packet_length@entry=39, is_com_multi=is_com_multi@entry=false, is_next_command=is_next_command@entry=false) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/sql_parse.cc:1817 #29 0x000055c2be4f3a31 in do_command (thd=0x7f2b080009a8) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/sql_parse.cc:1380 #30 0x000055c2be5acc34 in do_handle_one_connection (connect=connect@entry=0x55c2c1d9d7b8) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/sql_connect.cc:1354 #31 0x000055c2be5acda4 in handle_one_connection (arg=arg@entry=0x55c2c1d9d7b8) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/sql/sql_connect.cc:1260 #32 0x000055c2be809f24 in pfs_spawn_thread (arg=0x55c2c160c628) at /home/hartmut/projects/mariadb/git/mariadb-10.3-1.git/storage/perfschema/pfs.cc:1862 #33 0x00007f2b7dcb06ba in start_thread (arg=0x7f2b7422e700) at pthread_create.c:333 #34 0x00007f2b7d1453dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 (gdb) quit