warning: Can't read pathname for load map: Input/output error.
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".

warning: no loadable sections found in added symbol-file system-supplied DSO at 0x7ffe22126000
Core was generated by `/home/travis/server/bin/mysqld --no-defaults --basedir=/home/travis/server --lc'.
Program terminated with signal 11, Segmentation fault.
#0  0x00007fb58c45bf8c in pthread_kill () from /lib/x86_64-linux-gnu/libpthread.so.0

Thread 35 (Thread 0x7fb5597fa700 (LWP 25775)):
#0  0x00007fb58c45b0fe in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x0000000000c5c87f in os_cond_wait_timed (cond=0x3c4eb68, fast_mutex=0x3c4eb30, abstime=0x7fb5597f9d50) at /home/travis/src/storage/xtradb/os/os0sync.cc:159
#2  0x0000000000c5ce9d in os_event_wait_time_low (event=0x3c4eb30, time_in_usec=1000000, reset_sig_count=2399) at /home/travis/src/storage/xtradb/os/os0sync.cc:591
#3  0x0000000000e39439 in fil_crypt_thread (arg=0x0) at /home/travis/src/storage/xtradb/fil/fil0crypt.cc:2195
#4  0x00007fb58c456e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#5  0x00007fb58bb882ed in clone () from /lib/x86_64-linux-gnu/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 34 (Thread 0x7fb558ff9700 (LWP 25776)):
#0  0x00007fb58c45b0fe in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x0000000000c5c87f in os_cond_wait_timed (cond=0x3c4eb68, fast_mutex=0x3c4eb30, abstime=0x7fb558ff8d50) at /home/travis/src/storage/xtradb/os/os0sync.cc:159
#2  0x0000000000c5ce9d in os_event_wait_time_low (event=0x3c4eb30, time_in_usec=1000000, reset_sig_count=2399) at /home/travis/src/storage/xtradb/os/os0sync.cc:591
#3  0x0000000000e39439 in fil_crypt_thread (arg=0x0) at /home/travis/src/storage/xtradb/fil/fil0crypt.cc:2195
#4  0x00007fb58c456e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#5  0x00007fb58bb882ed in clone () from /lib/x86_64-linux-gnu/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 33 (Thread 0x7fb559ffb700 (LWP 25774)):
#0  0x00007fb58c45ad84 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x0000000000c5c967 in os_cond_wait (cond=0x371a5a8, fast_mutex=0x371a570) at /home/travis/src/storage/xtradb/os/os0sync.cc:196
#2  0x0000000000c5cca1 in os_event_wait_low (event=0x371a570, reset_sig_count=1) at /home/travis/src/storage/xtradb/os/os0sync.cc:477
#3  0x0000000000dc2a50 in buf_dump_thread () at /home/travis/src/storage/xtradb/buf/buf0dump.cc:708
#4  0x00007fb58c456e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#5  0x00007fb58bb882ed in clone () from /lib/x86_64-linux-gnu/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 32 (Thread 0x7fb5337fe700 (LWP 25778)):
#0  0x00007fb58c45b0fe in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x0000000000c5c87f in os_cond_wait_timed (cond=0x3c4eb68, fast_mutex=0x3c4eb30, abstime=0x7fb5337fdd50) at /home/travis/src/storage/xtradb/os/os0sync.cc:159
#2  0x0000000000c5ce9d in os_event_wait_time_low (event=0x3c4eb30, time_in_usec=1000000, reset_sig_count=2399) at /home/travis/src/storage/xtradb/os/os0sync.cc:591
#3  0x0000000000e39439 in fil_crypt_thread (arg=0x0) at /home/travis/src/storage/xtradb/fil/fil0crypt.cc:2195
#4  0x00007fb58c456e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#5  0x00007fb58bb882ed in clone () from /lib/x86_64-linux-gnu/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 31 (Thread 0x7fb55a7fc700 (LWP 25773)):
#0  0x00007fb58bb81633 in select () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x0000000000c5d585 in os_thread_sleep (tm=1000000) at /home/travis/src/storage/xtradb/os/os0thread.cc:307
#2  0x0000000000dcaeab in page_cleaner_sleep_if_needed (next_loop_time=1520458741385) at /home/travis/src/storage/xtradb/buf/buf0flu.cc:2665
#3  0x0000000000dcb7fd in buf_flush_lru_manager_thread (arg=0x0) at /home/travis/src/storage/xtradb/buf/buf0flu.cc:2966
#4  0x00007fb58c456e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#5  0x00007fb58bb882ed in clone () from /lib/x86_64-linux-gnu/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 30 (Thread 0x7fb588069b00 (LWP 25780)):
#0  0x00007fb58c45ad84 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x0000000000c5c967 in os_cond_wait (cond=0x3c63eb0, fast_mutex=0x3c63e78) at /home/travis/src/storage/xtradb/os/os0sync.cc:196
#2  0x0000000000c5cca1 in os_event_wait_low (event=0x3c63e78, reset_sig_count=110) at /home/travis/src/storage/xtradb/os/os0sync.cc:477
#3  0x0000000000d261b5 in sync_array_wait_event (arr=0x36d44d0, index=6) at /home/travis/src/storage/xtradb/sync/sync0arr.cc:474
#4  0x0000000000d2c405 in mutex_spin_wait (_mutex=0x3c63e78, high_priority=false, file_name=0x119d268 "/home/travis/src/storage/xtradb/dict/dict0dict.cc", line=567) at /home/travis/src/storage/xtradb/sync/sync0sync.cc:689
#5  0x0000000000de786f in mutex_enter_func (mutex=0x3c63e78, file_name=0x119d268 "/home/travis/src/storage/xtradb/dict/dict0dict.cc", line=567, priority=IB_DEFAULT_PRIO) at /home/travis/src/storage/xtradb/include/sync0sync.ic:331
#6  0x0000000000de79eb in pfs_mutex_enter_func (mutex=0x3c63e78, file_name=0x119d268 "/home/travis/src/storage/xtradb/dict/dict0dict.cc", line=567, priority=IB_DEFAULT_PRIO) at /home/travis/src/storage/xtradb/include/sync0sync.ic:415
#7  0x0000000000debdf0 in dict_table_close (table=0x7fb5240192b8, dict_locked=0, try_drop=1) at /home/travis/src/storage/xtradb/dict/dict0dict.cc:567
#8  0x0000000000ccd7aa in row_prebuilt_free (prebuilt=0x7fb54054c0e8, dict_locked=0) at /home/travis/src/storage/xtradb/row/row0mysql.cc:959
#9  0x0000000000bbb0a5 in ha_innobase::close (this=0x7fb540548d98) at /home/travis/src/storage/xtradb/handler/ha_innodb.cc:6809
#10 0x00000000008e78a9 in handler::ha_close (this=0x7fb540548d98) at /home/travis/src/sql/handler.cc:2596
#11 0x0000000000791b89 in closefrm (table=0x7fb540545900, free_share=true) at /home/travis/src/sql/table.cc:3058
#12 0x00000000006355c7 in intern_close_table (table=0x7fb540545900) at /home/travis/src/sql/sql_base.cc:354
#13 0x00000000008689a2 in tc_purge (mark_flushed=true) at /home/travis/src/sql/table_cache.cc:204
#14 0x00000000006359eb in close_cached_tables (thd=0x0, tables=0x0, wait_for_refresh=false, timeout=31536000) at /home/travis/src/sql/sql_base.cc:485
#15 0x000000000080cc39 in reload_acl_and_cache (thd=0x0, options=2147499823, tables=0x0, write_to_binlog=0x7fb588069290) at /home/travis/src/sql/sql_reload.cc:334
#16 0x00000000005d476b in signal_hand (arg=0x0) at /home/travis/src/sql/mysqld.cc:3451
#17 0x00007fb58c456e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#18 0x00007fb58bb882ed in clone () from /lib/x86_64-linux-gnu/libc.so.6
#19 0x0000000000000000 in ?? ()

Thread 29 (Thread 0x7fb562554700 (LWP 25772)):
#0  0x00007fb58bb81633 in select () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x0000000000c5d585 in os_thread_sleep (tm=1000000) at /home/travis/src/storage/xtradb/os/os0thread.cc:307
#2  0x0000000000dcaeab in page_cleaner_sleep_if_needed (next_loop_time=1520458740879) at /home/travis/src/storage/xtradb/buf/buf0flu.cc:2665
#3  0x0000000000dcb215 in buf_flush_page_cleaner_thread (arg=0x0) at /home/travis/src/storage/xtradb/buf/buf0flu.cc:2806
#4  0x00007fb58c456e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#5  0x00007fb58bb882ed in clone () from /lib/x86_64-linux-gnu/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 28 (Thread 0x7fb574446b00 (LWP 25808)):
#0  0x00007fb58bb81633 in select () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x0000000000c5d585 in os_thread_sleep (tm=10000) at /home/travis/src/storage/xtradb/os/os0thread.cc:307
#2  0x0000000000df12b8 in dict_index_remove_from_cache_low (table=0x7fb540206d68, index=0x7fb540211d48, lru_evict=0) at /home/travis/src/storage/xtradb/dict/dict0dict.cc:2736
#3  0x0000000000defe89 in dict_table_remove_from_cache_low (table=0x7fb540206d68, lru_evict=0) at /home/travis/src/storage/xtradb/dict/dict0dict.cc:2089
#4  0x0000000000df0341 in dict_table_remove_from_cache (table=0x7fb540206d68) at /home/travis/src/storage/xtradb/dict/dict0dict.cc:2147
#5  0x0000000000cd4114 in row_drop_table_for_mysql (name=0x7fb5400ebc40 "test/#sql-ib135-1138019654", trx=0x7fb540054de8, drop_db=false, create_failed=0, nonatomic=false) at /home/travis/src/storage/xtradb/row/row0mysql.cc:4414
#6  0x0000000000cc4b3b in row_merge_drop_table (trx=0x7fb540054de8, table=0x7fb540206d68) at /home/travis/src/storage/xtradb/row/row0merge.cc:3822
#7  0x0000000000bea292 in ha_innobase::commit_inplace_alter_table (this=0x7fb54c08e548, altered_table=0x7fb5400bb700, ha_alter_info=0x7fb574442980, commit=true) at /home/travis/src/storage/xtradb/handler/handler0alter.cc:6321
#8  0x00000000008eb915 in handler::ha_commit_inplace_alter_table (this=0x7fb54c08e548, altered_table=0x7fb5400bb700, ha_alter_info=0x7fb574442980, commit=true) at /home/travis/src/sql/handler.cc:4220
#9  0x0000000000763072 in mysql_inplace_alter_table (thd=0x3d342f0, table_list=0x7fb540005450, table=0x7fb54c0884c0, altered_table=0x7fb5400bb700, ha_alter_info=0x7fb574442980, inplace_supported=HA_ALTER_INPLACE_NO_LOCK_AFTER_PREPARE, target_mdl_request=0x7fb574443f50, alter_ctx=0x7fb574442ab0) at /home/travis/src/sql/sql_table.cc:7198
#10 0x0000000000767939 in mysql_alter_table (thd=0x3d342f0, new_db=0x7fb540005a40 "test", new_name=0x0, create_info=0x7fb574444180, table_list=0x7fb540005450, alter_info=0x7fb5744442b0, order_num=0, order=0x0, ignore=false) at /home/travis/src/sql/sql_table.cc:9024
#11 0x00000000007d8d2a in Sql_cmd_alter_table::execute (this=0x7fb540005a48, thd=0x3d342f0) at /home/travis/src/sql/sql_alter.cc:325
#12 0x00000000006ab4e6 in mysql_execute_command (thd=0x3d342f0) at /home/travis/src/sql/sql_parse.cc:5682
#13 0x00000000006afa68 in mysql_parse (thd=0x3d342f0, rawbuf=0x7fb540005318 "ALTER TABLE `t027` ROW_FORMAT=REDUNDANT /* QNO 1330 CON_ID 8 */", length=63, parser_state=0x7fb5744454e0) at /home/travis/src/sql/sql_parse.cc:7352
#14 0x000000000069e64b in dispatch_command (command=COM_QUERY, thd=0x3d342f0, packet=0x3d3d421 "ALTER TABLE `t027` ROW_FORMAT=REDUNDANT /* QNO 1330 CON_ID 8 */ ", packet_length=64) at /home/travis/src/sql/sql_parse.cc:1477
#15 0x000000000069d3ba in do_command (thd=0x3d342f0) at /home/travis/src/sql/sql_parse.cc:1106
#16 0x00000000007d4496 in do_handle_one_connection (thd_arg=0x3d342f0) at /home/travis/src/sql/sql_connect.cc:1330
#17 0x00000000007d41e7 in handle_one_connection (arg=0x3d342f0) at /home/travis/src/sql/sql_connect.cc:1242
#18 0x00007fb58c456e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#19 0x00007fb58bb882ed in clone () from /lib/x86_64-linux-gnu/libc.so.6
#20 0x0000000000000000 in ?? ()

Thread 27 (Thread 0x7fb55b7fe700 (LWP 25770)):
#0  0x00007fb58c45b0fe in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x0000000000c5c87f in os_cond_wait_timed (cond=0x3c4b2a8, fast_mutex=0x3c4b270, abstime=0x7fb55b7fdd90) at /home/travis/src/storage/xtradb/os/os0sync.cc:159
#2  0x0000000000c5ce9d in os_event_wait_time_low (event=0x3c4b270, time_in_usec=5000000, reset_sig_count=1) at /home/travis/src/storage/xtradb/os/os0sync.cc:591
#3  0x0000000000d64043 in ib_wqueue_timedwait (wq=0x3c46518, wait_in_usecs=5000000) at /home/travis/src/storage/xtradb/ut/ut0wqueue.cc:154
#4  0x0000000000e68661 in fts_optimize_thread (arg=0x3c46518) at /home/travis/src/storage/xtradb/fts/fts0opt.cc:3051
#5  0x00007fb58c456e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#6  0x00007fb58bb882ed in clone () from /lib/x86_64-linux-gnu/libc.so.6
#7  0x0000000000000000 in ?? ()

Thread 26 (Thread 0x7fb5743fcb00 (LWP 25810)):
#0  0x00007fb58c45ad84 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x0000000000c5c967 in os_cond_wait (cond=0x3c63eb0, fast_mutex=0x3c63e78) at /home/travis/src/storage/xtradb/os/os0sync.cc:196
#2  0x0000000000c5cca1 in os_event_wait_low (event=0x3c63e78, reset_sig_count=110) at /home/travis/src/storage/xtradb/os/os0sync.cc:477
#3  0x0000000000d261b5 in sync_array_wait_event (arr=0x36d44d0, index=1) at /home/travis/src/storage/xtradb/sync/sync0arr.cc:474
#4  0x0000000000d2c405 in mutex_spin_wait (_mutex=0x3c63e78, high_priority=false, file_name=0x11a3918 "/home/travis/src/storage/xtradb/dict/dict0stats.cc", line=833) at /home/travis/src/storage/xtradb/sync/sync0sync.cc:689
#5  0x0000000000e0bfbd in mutex_enter_func (mutex=0x3c63e78, file_name=0x11a3918 "/home/travis/src/storage/xtradb/dict/dict0stats.cc", line=833, priority=IB_DEFAULT_PRIO) at /home/travis/src/storage/xtradb/include/sync0sync.ic:331
#6  0x0000000000e0c07e in pfs_mutex_enter_func (mutex=0x3c63e78, file_name=0x11a3918 "/home/travis/src/storage/xtradb/dict/dict0stats.cc", line=833, priority=IB_DEFAULT_PRIO) at /home/travis/src/storage/xtradb/include/sync0sync.ic:415
#7  0x0000000000e10aee in dict_stats_snapshot_create (table=0x7fb54407f538) at /home/travis/src/storage/xtradb/dict/dict0stats.cc:833
#8  0x0000000000e13a30 in dict_stats_save (table_orig=0x7fb54407f538, only_for_index=0x0) at /home/travis/src/storage/xtradb/dict/dict0stats.cc:2527
#9  0x0000000000e15432 in dict_stats_update (table=0x7fb54407f538, stats_upd_option=DICT_STATS_RECALC_PERSISTENT) at /home/travis/src/storage/xtradb/dict/dict0stats.cc:3303
#10 0x0000000000be8591 in alter_stats_rebuild (table=0x7fb54407f538, table_name=0x7fb54c05605d "t029", thd=0x3d47ef0) at /home/travis/src/storage/xtradb/handler/handler0alter.cc:5703
#11 0x0000000000bea5ba in ha_innobase::commit_inplace_alter_table (this=0x7fb54c0608c8, altered_table=0x7fb5440699d0, ha_alter_info=0x7fb5743f8980, commit=true) at /home/travis/src/storage/xtradb/handler/handler0alter.cc:6367
#12 0x00000000008eb915 in handler::ha_commit_inplace_alter_table (this=0x7fb54c0608c8, altered_table=0x7fb5440699d0, ha_alter_info=0x7fb5743f8980, commit=true) at /home/travis/src/sql/handler.cc:4220
#13 0x0000000000763072 in mysql_inplace_alter_table (thd=0x3d47ef0, table_list=0x7fb544005470, table=0x7fb54c05fc80, altered_table=0x7fb5440699d0, ha_alter_info=0x7fb5743f8980, inplace_supported=HA_ALTER_INPLACE_NO_LOCK_AFTER_PREPARE, target_mdl_request=0x7fb5743f9f50, alter_ctx=0x7fb5743f8ab0) at /home/travis/src/sql/sql_table.cc:7198
#14 0x0000000000767939 in mysql_alter_table (thd=0x3d47ef0, new_db=0x7fb544005a60 "test", new_name=0x0, create_info=0x7fb5743fa180, table_list=0x7fb544005470, alter_info=0x7fb5743fa2b0, order_num=0, order=0x0, ignore=false) at /home/travis/src/sql/sql_table.cc:9024
#15 0x00000000007d8d2a in Sql_cmd_alter_table::execute (this=0x7fb544005a70, thd=0x3d47ef0) at /home/travis/src/sql/sql_alter.cc:325
#16 0x00000000006ab4e6 in mysql_execute_command (thd=0x3d47ef0) at /home/travis/src/sql/sql_parse.cc:5682
#17 0x00000000006afa68 in mysql_parse (thd=0x3d47ef0, rawbuf=0x7fb544005328 "ALTER TABLE `t029` FORCE, ALGORITHM=INPLACE /* QNO 1315 CON_ID 9 */", length=67, parser_state=0x7fb5743fb4e0) at /home/travis/src/sql/sql_parse.cc:7352
#18 0x000000000069e64b in dispatch_command (command=COM_QUERY, thd=0x3d47ef0, packet=0x3b27dc1 "ALTER TABLE `t029` FORCE, ALGORITHM=INPLACE /* QNO 1315 CON_ID 9 */ ", packet_length=68) at /home/travis/src/sql/sql_parse.cc:1477
#19 0x000000000069d3ba in do_command (thd=0x3d47ef0) at /home/travis/src/sql/sql_parse.cc:1106
#20 0x00000000007d4496 in do_handle_one_connection (thd_arg=0x3d47ef0) at /home/travis/src/sql/sql_connect.cc:1330
#21 0x00000000007d41e7 in handle_one_connection (arg=0x3d47ef0) at /home/travis/src/sql/sql_connect.cc:1242
#22 0x00007fb58c456e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#23 0x00007fb58bb882ed in clone () from /lib/x86_64-linux-gnu/libc.so.6
#24 0x0000000000000000 in ?? ()

Thread 25 (Thread 0x7fb55bfff700 (LWP 25769)):
#0  0x00007fb58c45ad84 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x0000000000c5c967 in os_cond_wait (cond=0x3c63eb0, fast_mutex=0x3c63e78) at /home/travis/src/storage/xtradb/os/os0sync.cc:196
#2  0x0000000000c5cca1 in os_event_wait_low (event=0x3c63e78, reset_sig_count=110) at /home/travis/src/storage/xtradb/os/os0sync.cc:477
#3  0x0000000000d261b5 in sync_array_wait_event (arr=0x36d44d0, index=5) at /home/travis/src/storage/xtradb/sync/sync0arr.cc:474
#4  0x0000000000d2c405 in mutex_spin_wait (_mutex=0x3c63e78, high_priority=false, file_name=0x11a5af8 "/home/travis/src/storage/xtradb/dict/dict0stats_bg.cc", line=424) at /home/travis/src/storage/xtradb/sync/sync0sync.cc:689
#5  0x0000000000e18e62 in mutex_enter_func (mutex=0x3c63e78, file_name=0x11a5af8 "/home/travis/src/storage/xtradb/dict/dict0stats_bg.cc", line=424, priority=IB_DEFAULT_PRIO) at /home/travis/src/storage/xtradb/include/sync0sync.ic:331
#6  0x0000000000e18fde in pfs_mutex_enter_func (mutex=0x3c63e78, file_name=0x11a5af8 "/home/travis/src/storage/xtradb/dict/dict0stats_bg.cc", line=424, priority=IB_DEFAULT_PRIO) at /home/travis/src/storage/xtradb/include/sync0sync.ic:415
#7  0x0000000000e19c78 in dict_stats_process_entry_from_recalc_pool () at /home/travis/src/storage/xtradb/dict/dict0stats_bg.cc:424
#8  0x0000000000e19f8d in dict_stats_thread () at /home/travis/src/storage/xtradb/dict/dict0stats_bg.cc:546
#9  0x00007fb58c456e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#10 0x00007fb58bb882ed in clone () from /lib/x86_64-linux-gnu/libc.so.6
#11 0x0000000000000000 in ?? ()

Thread 24 (Thread 0x7fb5743b2b00 (LWP 25814)):
#0  0x00007fb58c45ad84 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x0000000000c5c967 in os_cond_wait (cond=0x3c63eb0, fast_mutex=0x3c63e78) at /home/travis/src/storage/xtradb/os/os0sync.cc:196
#2  0x0000000000c5cca1 in os_event_wait_low (event=0x3c63e78, reset_sig_count=110) at /home/travis/src/storage/xtradb/os/os0sync.cc:477
#3  0x0000000000d261b5 in sync_array_wait_event (arr=0x36d44d0, index=3) at /home/travis/src/storage/xtradb/sync/sync0arr.cc:474
#4  0x0000000000d2c405 in mutex_spin_wait (_mutex=0x3c63e78, high_priority=false, file_name=0x1151180 "/home/travis/src/storage/xtradb/que/que0que.cc", line=1278) at /home/travis/src/storage/xtradb/sync/sync0sync.cc:689
#5  0x0000000000c880a2 in mutex_enter_func (mutex=0x3c63e78, file_name=0x1151180 "/home/travis/src/storage/xtradb/que/que0que.cc", line=1278, priority=IB_DEFAULT_PRIO) at /home/travis/src/storage/xtradb/include/sync0sync.ic:331
#6  0x0000000000c8821e in pfs_mutex_enter_func (mutex=0x3c63e78, file_name=0x1151180 "/home/travis/src/storage/xtradb/que/que0que.cc", line=1278, priority=IB_DEFAULT_PRIO) at /home/travis/src/storage/xtradb/include/sync0sync.ic:415
#7  0x0000000000c8aca2 in que_eval_sql (info=0x7fb54c05e0d8, sql=0x11a4908 "PROCEDURE FETCH_STATS () IS\nfound INT;\nDECLARE FUNCTION fetch_table_stats_step;\nDECLARE FUNCTION fetch_index_stats_step;\nDECLARE CURSOR table_stats_cur IS\n  SELECT\n  n_rows,\n  clustered_index_size,\n  "..., reserve_dict_mutex=1, trx=0x7fb54c062198) at /home/travis/src/storage/xtradb/que/que0que.cc:1278
#8  0x0000000000e14f97 in dict_stats_fetch_from_ps (table=0x7fb54c03c838) at /home/travis/src/storage/xtradb/dict/dict0stats.cc:3163
#9  0x0000000000e1567c in dict_stats_update (table=0x7fb54c089e68, stats_upd_option=DICT_STATS_FETCH_ONLY_IF_NOT_IN_MEMORY) at /home/travis/src/storage/xtradb/dict/dict0stats.cc:3390
#10 0x0000000000bb2cfe in dict_stats_init (table=0x7fb54c089e68) at /home/travis/src/storage/xtradb/include/dict0stats.ic:174
#11 0x0000000000bba617 in ha_innobase::open (this=0x7fb54c05acd8, name=0x7fb54c058ad8 "./test/t028", mode=2, test_if_locked=18) at /home/travis/src/storage/xtradb/handler/ha_innodb.cc:6518
#12 0x00000000008e74c4 in handler::ha_open (this=0x7fb54c05acd8, table_arg=0x7fb54c05a090, name=0x7fb54c058ad8 "./test/t028", mode=2, test_if_locked=18) at /home/travis/src/sql/handler.cc:2531
#13 0x0000000000791801 in open_table_from_share (thd=0x3b374b0, share=0x7fb54c0585f8, alias=0x7fb54c005898 "t028", db_stat=39, prgflag=44, ha_open_flags=18, outparam=0x7fb54c05a090, is_create_table=false) at /home/travis/src/sql/table.cc:2970
#14 0x0000000000639b53 in open_table (thd=0x3b374b0, table_list=0x7fb54c0058a0, ot_ctx=0x7fb5743b0560) at /home/travis/src/sql/sql_base.cc:2553
#15 0x000000000063c39d in open_and_process_table (thd=0x3b374b0, lex=0x3b3aef0, tables=0x7fb54c0058a0, counter=0x7fb5743b06ac, flags=0, prelocking_strategy=0x7fb5743b06f0, has_prelocking_list=false, ot_ctx=0x7fb5743b0560) at /home/travis/src/sql/sql_base.cc:4068
#16 0x000000000063d3eb in open_tables (thd=0x3b374b0, options=..., start=0x7fb5743b0658, counter=0x7fb5743b06ac, flags=0, prelocking_strategy=0x7fb5743b06f0) at /home/travis/src/sql/sql_base.cc:4579
#17 0x000000000063e6ef in open_and_lock_tables (thd=0x3b374b0, options=..., tables=0x7fb54c0058a0, derived=true, flags=0, prelocking_strategy=0x7fb5743b06f0) at /home/travis/src/sql/sql_base.cc:5259
#18 0x0000000000632197 in open_and_lock_tables (thd=0x3b374b0, tables=0x7fb54c0058a0, derived=true, flags=0) at /home/travis/src/sql/sql_base.h:535
#19 0x000000000067fb0d in mysql_insert (thd=0x3b374b0, table_list=0x7fb54c0058a0, fields=..., values_list=..., update_fields=..., update_values=..., duplic=DUP_ERROR, ignore=true) at /home/travis/src/sql/sql_insert.cc:749
#20 0x00000000006a4f80 in mysql_execute_command (thd=0x3b374b0) at /home/travis/src/sql/sql_parse.cc:3915
#21 0x00000000006afa68 in mysql_parse (thd=0x3b374b0, rawbuf=0x7fb54c005718 "INSERT IGNORE INTO `t028` ( `pk`, `col_varchar_8_key` ) VALUES ( NULL, 'y' )  /* QNO 1278 CON_ID 11 */", length=102, parser_state=0x7fb5743b14e0) at /home/travis/src/sql/sql_parse.cc:7352
#22 0x000000000069e64b in dispatch_command (command=COM_QUERY, thd=0x3b374b0, packet=0x3b3cb31 " INSERT IGNORE INTO `t028` ( `pk`, `col_varchar_8_key` ) VALUES ( NULL, 'y' )  /* QNO 1278 CON_ID 11 */ ", packet_length=104) at /home/travis/src/sql/sql_parse.cc:1477
#23 0x000000000069d3ba in do_command (thd=0x3b374b0) at /home/travis/src/sql/sql_parse.cc:1106
#24 0x00000000007d4496 in do_handle_one_connection (thd_arg=0x3b374b0) at /home/travis/src/sql/sql_connect.cc:1330
#25 0x00000000007d41e7 in handle_one_connection (arg=0x3b374b0) at /home/travis/src/sql/sql_connect.cc:1242
#26 0x00007fb58c456e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#27 0x00007fb58bb882ed in clone () from /lib/x86_64-linux-gnu/libc.so.6
#28 0x0000000000000000 in ?? ()

Thread 23 (Thread 0x7fb560d51700 (LWP 25768)):
#0  0x00007fb58c45ad84 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x0000000000c5c967 in os_cond_wait (cond=0x21ede18, fast_mutex=0x21edde0) at /home/travis/src/storage/xtradb/os/os0sync.cc:196
#2  0x0000000000c5cca1 in os_event_wait_low (event=0x21edde0, reset_sig_count=311) at /home/travis/src/storage/xtradb/os/os0sync.cc:477
#3  0x0000000000d261b5 in sync_array_wait_event (arr=0x36d44d0, index=4) at /home/travis/src/storage/xtradb/sync/sync0arr.cc:474
#4  0x0000000000d2a4ef in rw_lock_x_lock_func (lock=0x21eddc0, pass=0, file_name=0x1172f80 "/home/travis/src/storage/xtradb/srv/srv0srv.cc", line=2843, priority_lock=false, high_priority=false) at /home/travis/src/storage/xtradb/sync/sync0rw.cc:908
#5  0x0000000000d17be4 in pfs_rw_lock_x_lock_func (lock=0x21eddc0, pass=0, file_name=0x1172f80 "/home/travis/src/storage/xtradb/srv/srv0srv.cc", line=2843) at /home/travis/src/storage/xtradb/include/sync0rw.ic:907
#6  0x0000000000d1c57a in srv_master_evict_from_table_cache (pct_check=100) at /home/travis/src/storage/xtradb/srv/srv0srv.cc:2843
#7  0x0000000000d1cd03 in srv_master_do_idle_tasks () at /home/travis/src/storage/xtradb/srv/srv0srv.cc:3043
#8  0x0000000000d1d27d in srv_master_thread (arg=0x0) at /home/travis/src/storage/xtradb/srv/srv0srv.cc:3187
#9  0x00007fb58c456e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#10 0x00007fb58bb882ed in clone () from /lib/x86_64-linux-gnu/libc.so.6
#11 0x0000000000000000 in ?? ()

Thread 22 (Thread 0x7fb561552700 (LWP 25767)):
#0  0x00007fb58c45b0fe in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x0000000000c5c87f in os_cond_wait_timed (cond=0x37426b8, fast_mutex=0x3742680, abstime=0x7fb561551de0) at /home/travis/src/storage/xtradb/os/os0sync.cc:159
#2  0x0000000000c5ce9d in os_event_wait_time_low (event=0x3742680, time_in_usec=1000000, reset_sig_count=1) at /home/travis/src/storage/xtradb/os/os0sync.cc:591
#3  0x0000000000d1bae7 in srv_error_monitor_thread () at /home/travis/src/storage/xtradb/srv/srv0srv.cc:2431
#4  0x00007fb58c456e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#5  0x00007fb58bb882ed in clone () from /lib/x86_64-linux-gnu/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 21 (Thread 0x7fb5740b2b00 (LWP 25812)):
#0  0x00007fb58c45ad84 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x0000000000c5c967 in os_cond_wait (cond=0x3c63eb0, fast_mutex=0x3c63e78) at /home/travis/src/storage/xtradb/os/os0sync.cc:196
#2  0x0000000000c5cca1 in os_event_wait_low (event=0x3c63e78, reset_sig_count=110) at /home/travis/src/storage/xtradb/os/os0sync.cc:477
#3  0x0000000000d261b5 in sync_array_wait_event (arr=0x36d44d0, index=2) at /home/travis/src/storage/xtradb/sync/sync0arr.cc:474
#4  0x0000000000d2c405 in mutex_spin_wait (_mutex=0x3c63e78, high_priority=false, file_name=0x119d268 "/home/travis/src/storage/xtradb/dict/dict0dict.cc", line=567) at /home/travis/src/storage/xtradb/sync/sync0sync.cc:689
#5  0x0000000000de786f in mutex_enter_func (mutex=0x3c63e78, file_name=0x119d268 "/home/travis/src/storage/xtradb/dict/dict0dict.cc", line=567, priority=IB_DEFAULT_PRIO) at /home/travis/src/storage/xtradb/include/sync0sync.ic:331
#6  0x0000000000de79eb in pfs_mutex_enter_func (mutex=0x3c63e78, file_name=0x119d268 "/home/travis/src/storage/xtradb/dict/dict0dict.cc", line=567, priority=IB_DEFAULT_PRIO) at /home/travis/src/storage/xtradb/include/sync0sync.ic:415
#7  0x0000000000debdf0 in dict_table_close (table=0x7fb5500af6b8, dict_locked=0, try_drop=1) at /home/travis/src/storage/xtradb/dict/dict0dict.cc:567
#8  0x0000000000ccd7aa in row_prebuilt_free (prebuilt=0x7fb544047e08, dict_locked=0) at /home/travis/src/storage/xtradb/row/row0mysql.cc:959
#9  0x0000000000bbb0a5 in ha_innobase::close (this=0x7fb54406c478) at /home/travis/src/storage/xtradb/handler/ha_innodb.cc:6809
#10 0x00000000008e78a9 in handler::ha_close (this=0x7fb54406c478) at /home/travis/src/sql/handler.cc:2596
#11 0x0000000000791b89 in closefrm (table=0x7fb544059560, free_share=true) at /home/travis/src/sql/table.cc:3058
#12 0x00000000006355c7 in intern_close_table (table=0x7fb544059560) at /home/travis/src/sql/sql_base.cc:354
#13 0x0000000000868f35 in tc_release_table (table=0x7fb544059560) at /home/travis/src/sql/table_cache.cc:360
#14 0x0000000000636cd5 in close_thread_table (thd=0x3b2be50, table_ptr=0x3b2bf18) at /home/travis/src/sql/sql_base.cc:1089
#15 0x000000000063649e in close_open_tables (thd=0x3b2be50) at /home/travis/src/sql/sql_base.cc:812
#16 0x0000000000636a60 in close_thread_tables (thd=0x3b2be50) at /home/travis/src/sql/sql_base.cc:1036
#17 0x00000000007e71a2 in mysql_admin_table(THD *, TABLE_LIST *, HA_CHECK_OPT *, const char *, thr_lock_type, bool, bool, uint, int (*)(THD *, TABLE_LIST *, HA_CHECK_OPT *), struct {...}, int (*)(THD *, TABLE_LIST *, HA_CHECK_OPT *)) (thd=0x3b2be50, tables=0x7fb5500043b0, check_opt=0x3b307a0, operator_name=0x101d418 "optimize", lock_type=TL_WRITE, open_for_modify=true, repair_table_use_frm=false, extra_open_options=0, prepare_func=0, operator_func=(int (handler::*)(handler * const, THD *, HA_CHECK_OPT *)) 0x8eb4cc <handler::ha_optimize(THD*, st_ha_check_opt*)>, view_operator_func=0) at /home/travis/src/sql/sql_admin.cc:1119
#18 0x00000000007e7b8c in Sql_cmd_optimize_table::execute (this=0x7fb5500049a8, thd=0x3b2be50) at /home/travis/src/sql/sql_admin.cc:1306
#19 0x00000000006ab4e6 in mysql_execute_command (thd=0x3b2be50) at /home/travis/src/sql/sql_parse.cc:5682
#20 0x00000000006afa68 in mysql_parse (thd=0x3b2be50, rawbuf=0x7fb550004298 "OPTIMIZE TABLE `t019` /* QNO 1219 CON_ID 10 */", length=46, parser_state=0x7fb5740b14e0) at /home/travis/src/sql/sql_parse.cc:7352
#21 0x000000000069e64b in dispatch_command (command=COM_QUERY, thd=0x3b2be50, packet=0x3b33421 "", packet_length=47) at /home/travis/src/sql/sql_parse.cc:1477
#22 0x000000000069d3ba in do_command (thd=0x3b2be50) at /home/travis/src/sql/sql_parse.cc:1106
#23 0x00000000007d4496 in do_handle_one_connection (thd_arg=0x3b2be50) at /home/travis/src/sql/sql_connect.cc:1330
#24 0x00000000007d41e7 in handle_one_connection (arg=0x3b2be50) at /home/travis/src/sql/sql_connect.cc:1242
#25 0x00007fb58c456e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#26 0x00007fb58bb882ed in clone () from /lib/x86_64-linux-gnu/libc.so.6
#27 0x0000000000000000 in ?? ()

Thread 20 (Thread 0x7fb574490b00 (LWP 25784)):
#0  0x00007fb58bb7c913 in poll () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x0000000000f94894 in vio_io_wait (vio=0x3b22730, event=VIO_IO_EVENT_READ, timeout=28800000) at /home/travis/src/vio/viosocket.c:992
#2  0x0000000000f93142 in vio_socket_io_wait (vio=0x3b22730, event=VIO_IO_EVENT_READ) at /home/travis/src/vio/viosocket.c:108
#3  0x0000000000f932f2 in vio_read (vio=0x3b22730, buf=0x3b229a0 "\a", size=4) at /home/travis/src/vio/viosocket.c:184
#4  0x00000000005e2cf8 in my_real_read (net=0x3b1c4f8, complen=0x7fb57448fd38, header=1 '\001') at /home/travis/src/sql/net_serv.cc:877
#5  0x00000000005e349c in my_net_read_packet (net=0x3b1c4f8, read_from_server=1 '\001') at /home/travis/src/sql/net_serv.cc:1140
#6  0x000000000069ce4a in do_command (thd=0x3b1c230) at /home/travis/src/sql/sql_parse.cc:983
#7  0x00000000007d4496 in do_handle_one_connection (thd_arg=0x3b1c230) at /home/travis/src/sql/sql_connect.cc:1330
#8  0x00000000007d41e7 in handle_one_connection (arg=0x3b1c230) at /home/travis/src/sql/sql_connect.cc:1242
#9  0x00007fb58c456e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#10 0x00007fb58bb882ed in clone () from /lib/x86_64-linux-gnu/libc.so.6
#11 0x0000000000000000 in ?? ()

Thread 19 (Thread 0x7fb561d53700 (LWP 25766)):
#0  0x00007fb58c45b0fe in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x0000000000c5c87f in os_cond_wait_timed (cond=0x3a27e18, fast_mutex=0x3a27de0, abstime=0x7fb561d52e20) at /home/travis/src/storage/xtradb/os/os0sync.cc:159
#2  0x0000000000c5ce9d in os_event_wait_time_low (event=0x3a27de0, time_in_usec=1000000, reset_sig_count=1) at /home/travis/src/storage/xtradb/os/os0sync.cc:591
#3  0x0000000000c2b717 in lock_wait_timeout_thread () at /home/travis/src/storage/xtradb/lock/lock0wait.cc:597
#4  0x00007fb58c456e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#5  0x00007fb58bb882ed in clone () from /lib/x86_64-linux-gnu/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 18 (Thread 0x7fb562d55700 (LWP 25764)):
#0  0x00007fb58c45b0fe in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x0000000000c5c87f in os_cond_wait_timed (cond=0x3719ea8, fast_mutex=0x3719e70, abstime=0x7fb562d54df0) at /home/travis/src/storage/xtradb/os/os0sync.cc:159
#2  0x0000000000c5ce9d in os_event_wait_time_low (event=0x3719e70, time_in_usec=5000000, reset_sig_count=1) at /home/travis/src/storage/xtradb/os/os0sync.cc:591
#3  0x0000000000d1b4ab in srv_monitor_thread () at /home/travis/src/storage/xtradb/srv/srv0srv.cc:2190
#4  0x00007fb58c456e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#5  0x00007fb58bb882ed in clone () from /lib/x86_64-linux-gnu/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 17 (Thread 0x7fb563d67700 (LWP 25763)):
#0  0x00007fb58d504644 in ?? () from /lib/x86_64-linux-gnu/libaio.so.1
#1  0x0000000000c59cbe in os_aio_linux_collect (array=0x38b5510, segment=3, seg_size=256) at /home/travis/src/storage/xtradb/os/os0file.cc:5547
#2  0x0000000000c5a098 in os_aio_linux_handle (global_seg=9, message1=0x7fb563d66e08, message2=0x7fb563d66e10, type=0x7fb563d66e18, space_id=0x7fb563d66e20) at /home/travis/src/storage/xtradb/os/os0file.cc:5701
#3  0x0000000000e2edcd in fil_aio_wait (segment=9) at /home/travis/src/storage/xtradb/fil/fil0fil.cc:6373
#4  0x0000000000d20392 in io_handler_thread (arg=0x21dd548) at /home/travis/src/storage/xtradb/srv/srv0start.cc:585
#5  0x00007fb58c456e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#6  0x00007fb58bb882ed in clone () from /lib/x86_64-linux-gnu/libc.so.6
#7  0x0000000000000000 in ?? ()

Thread 16 (Thread 0x7fb5744dab00 (LWP 25781)):
#0  0x00007fb58c45ad84 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x0000000000f40238 in safe_cond_wait (cond=0x19749c0, mp=0x1977a40, file=0xfd10e0 "/home/travis/src/include/mysql/psi/mysql_thread.h", line=1165) at /home/travis/src/mysys/thr_mutex.c:493
#2  0x00000000005f734b in inline_mysql_cond_wait (that=0x19749c0, mutex=0x1977a40, src_file=0xfd1865 "/home/travis/src/sql/slave.cc", src_line=336) at /home/travis/src/include/mysql/psi/mysql_thread.h:1165
#3  0x00000000005f80bd in handle_slave_background (arg=0x0) at /home/travis/src/sql/slave.cc:336
#4  0x00007fb58c456e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#5  0x00007fb58bb882ed in clone () from /lib/x86_64-linux-gnu/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 15 (Thread 0x7fb564568700 (LWP 25762)):
#0  0x00007fb58d504644 in ?? () from /lib/x86_64-linux-gnu/libaio.so.1
#1  0x0000000000c59cbe in os_aio_linux_collect (array=0x38b5510, segment=2, seg_size=256) at /home/travis/src/storage/xtradb/os/os0file.cc:5547
#2  0x0000000000c5a098 in os_aio_linux_handle (global_seg=8, message1=0x7fb564567e08, message2=0x7fb564567e10, type=0x7fb564567e18, space_id=0x7fb564567e20) at /home/travis/src/storage/xtradb/os/os0file.cc:5701
#3  0x0000000000e2edcd in fil_aio_wait (segment=8) at /home/travis/src/storage/xtradb/fil/fil0fil.cc:6373
#4  0x0000000000d20392 in io_handler_thread (arg=0x21dd540) at /home/travis/src/storage/xtradb/srv/srv0start.cc:585
#5  0x00007fb58c456e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#6  0x00007fb58bb882ed in clone () from /lib/x86_64-linux-gnu/libc.so.6
#7  0x0000000000000000 in ?? ()

Thread 14 (Thread 0x7fb532ffd700 (LWP 25779)):
#0  0x00007fb58bb81633 in select () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x0000000000c5d585 in os_thread_sleep (tm=1000000) at /home/travis/src/storage/xtradb/os/os0thread.cc:307
#2  0x0000000000da8770 in btr_defragment_thread () at /home/travis/src/storage/xtradb/btr/btr0defragment.cc:758
#3  0x00007fb58c456e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#4  0x00007fb58bb882ed in clone () from /lib/x86_64-linux-gnu/libc.so.6
#5  0x0000000000000000 in ?? ()

Thread 13 (Thread 0x7fb564d69700 (LWP 25761)):
#0  0x00007fb58d504644 in ?? () from /lib/x86_64-linux-gnu/libaio.so.1
#1  0x0000000000c59cbe in os_aio_linux_collect (array=0x38b5510, segment=1, seg_size=256) at /home/travis/src/storage/xtradb/os/os0file.cc:5547
#2  0x0000000000c5a098 in os_aio_linux_handle (global_seg=7, message1=0x7fb564d68e08, message2=0x7fb564d68e10, type=0x7fb564d68e18, space_id=0x7fb564d68e20) at /home/travis/src/storage/xtradb/os/os0file.cc:5701
#3  0x0000000000e2edcd in fil_aio_wait (segment=7) at /home/travis/src/storage/xtradb/fil/fil0fil.cc:6373
#4  0x0000000000d20392 in io_handler_thread (arg=0x21dd538) at /home/travis/src/storage/xtradb/srv/srv0start.cc:585
#5  0x00007fb58c456e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#6  0x00007fb58bb882ed in clone () from /lib/x86_64-linux-gnu/libc.so.6
#7  0x0000000000000000 in ?? ()

Thread 12 (Thread 0x7fb533fff700 (LWP 25777)):
#0  0x00007fb58c45b0fe in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x0000000000c5c87f in os_cond_wait_timed (cond=0x3c4eb68, fast_mutex=0x3c4eb30, abstime=0x7fb533ffed50) at /home/travis/src/storage/xtradb/os/os0sync.cc:159
#2  0x0000000000c5ce9d in os_event_wait_time_low (event=0x3c4eb30, time_in_usec=1000000, reset_sig_count=2399) at /home/travis/src/storage/xtradb/os/os0sync.cc:591
#3  0x0000000000e39439 in fil_crypt_thread (arg=0x0) at /home/travis/src/storage/xtradb/fil/fil0crypt.cc:2195
#4  0x00007fb58c456e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#5  0x00007fb58bb882ed in clone () from /lib/x86_64-linux-gnu/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 11 (Thread 0x7fb56656c700 (LWP 25758)):
#0  0x00007fb58d504644 in ?? () from /lib/x86_64-linux-gnu/libaio.so.1
#1  0x0000000000c59cbe in os_aio_linux_collect (array=0x384ed40, segment=2, seg_size=256) at /home/travis/src/storage/xtradb/os/os0file.cc:5547
#2  0x0000000000c5a098 in os_aio_linux_handle (global_seg=4, message1=0x7fb56656be08, message2=0x7fb56656be10, type=0x7fb56656be18, space_id=0x7fb56656be20) at /home/travis/src/storage/xtradb/os/os0file.cc:5701
#3  0x0000000000e2edcd in fil_aio_wait (segment=4) at /home/travis/src/storage/xtradb/fil/fil0fil.cc:6373
#4  0x0000000000d20392 in io_handler_thread (arg=0x21dd520) at /home/travis/src/storage/xtradb/srv/srv0start.cc:585
#5  0x00007fb58c456e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#6  0x00007fb58bb882ed in clone () from /lib/x86_64-linux-gnu/libc.so.6
#7  0x0000000000000000 in ?? ()

Thread 10 (Thread 0x7fb55affd700 (LWP 25771)):
#0  0x00007fb58c45ad84 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x0000000000c5c967 in os_cond_wait (cond=0x21ede18, fast_mutex=0x21edde0) at /home/travis/src/storage/xtradb/os/os0sync.cc:196
#2  0x0000000000c5cca1 in os_event_wait_low (event=0x21edde0, reset_sig_count=311) at /home/travis/src/storage/xtradb/os/os0sync.cc:477
#3  0x0000000000d261b5 in sync_array_wait_event (arr=0x36d44d0, index=0) at /home/travis/src/storage/xtradb/sync/sync0arr.cc:474
#4  0x0000000000d29c6b in rw_lock_s_lock_spin (_lock=0x21eddc0, pass=0, priority_lock=false, high_priority=false, file_name=0x1165dd0 "/home/travis/src/storage/xtradb/row/row0purge.cc", line=772) at /home/travis/src/storage/xtradb/sync/sync0rw.cc:551
#5  0x0000000000ce77c6 in rw_lock_s_lock_func (lock=0x21eddc0, pass=0, file_name=0x1165dd0 "/home/travis/src/storage/xtradb/row/row0purge.cc", line=772) at /home/travis/src/storage/xtradb/include/sync0rw.ic:432
#6  0x0000000000ce7c56 in pfs_rw_lock_s_lock_func (lock=0x21eddc0, pass=0, file_name=0x1165dd0 "/home/travis/src/storage/xtradb/row/row0purge.cc", line=772) at /home/travis/src/storage/xtradb/include/sync0rw.ic:1060
#7  0x0000000000ceb518 in row_purge_parse_undo_rec (node=0x3d2ce78, undo_rec=0x7fb5500635f0 "\210\217\016\025\002", updated_extern=0x7fb55affccde, thr=0x3c593c0) at /home/travis/src/storage/xtradb/row/row0purge.cc:772
#8  0x0000000000ceb9a6 in row_purge (node=0x3d2ce78, undo_rec=0x7fb5500635f0 "\210\217\016\025\002", thr=0x3c593c0) at /home/travis/src/storage/xtradb/row/row0purge.cc:913
#9  0x0000000000cebc00 in row_purge_step (thr=0x3c593c0) at /home/travis/src/storage/xtradb/row/row0purge.cc:996
#10 0x0000000000c8a661 in que_thr_step (thr=0x3c593c0) at /home/travis/src/storage/xtradb/que/que0que.cc:1089
#11 0x0000000000c8a862 in que_run_threads_low (thr=0x3c593c0) at /home/travis/src/storage/xtradb/que/que0que.cc:1151
#12 0x0000000000c8a9f4 in que_run_threads (thr=0x3c593c0) at /home/travis/src/storage/xtradb/que/que0que.cc:1192
#13 0x0000000000d39e53 in trx_purge (n_purge_threads=1, batch_size=300, truncate=false) at /home/travis/src/storage/xtradb/trx/trx0purge.cc:1228
#14 0x0000000000d1da10 in srv_do_purge (n_threads=1, n_total_purged=0x7fb55affce70) at /home/travis/src/storage/xtradb/srv/srv0srv.cc:3444
#15 0x0000000000d1dfc4 in srv_purge_coordinator_thread (arg=0x0) at /home/travis/src/storage/xtradb/srv/srv0srv.cc:3594
#16 0x00007fb58c456e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#17 0x00007fb58bb882ed in clone () from /lib/x86_64-linux-gnu/libc.so.6
#18 0x0000000000000000 in ?? ()

Thread 9 (Thread 0x7fb566d6d700 (LWP 25757)):
#0  0x00007fb58d504644 in ?? () from /lib/x86_64-linux-gnu/libaio.so.1
#1  0x0000000000c59cbe in os_aio_linux_collect (array=0x384ed40, segment=1, seg_size=256) at /home/travis/src/storage/xtradb/os/os0file.cc:5547
#2  0x0000000000c5a098 in os_aio_linux_handle (global_seg=3, message1=0x7fb566d6ce08, message2=0x7fb566d6ce10, type=0x7fb566d6ce18, space_id=0x7fb566d6ce20) at /home/travis/src/storage/xtradb/os/os0file.cc:5701
#3  0x0000000000e2edcd in fil_aio_wait (segment=3) at /home/travis/src/storage/xtradb/fil/fil0fil.cc:6373
#4  0x0000000000d20392 in io_handler_thread (arg=0x21dd518) at /home/travis/src/storage/xtradb/srv/srv0start.cc:585
#5  0x00007fb58c456e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#6  0x00007fb58bb882ed in clone () from /lib/x86_64-linux-gnu/libc.so.6
#7  0x0000000000000000 in ?? ()

Thread 8 (Thread 0x7fb56556a700 (LWP 25760)):
#0  0x00007fb58d504644 in ?? () from /lib/x86_64-linux-gnu/libaio.so.1
#1  0x0000000000c59cbe in os_aio_linux_collect (array=0x38b5510, segment=0, seg_size=256) at /home/travis/src/storage/xtradb/os/os0file.cc:5547
#2  0x0000000000c5a098 in os_aio_linux_handle (global_seg=6, message1=0x7fb565569e08, message2=0x7fb565569e10, type=0x7fb565569e18, space_id=0x7fb565569e20) at /home/travis/src/storage/xtradb/os/os0file.cc:5701
#3  0x0000000000e2edcd in fil_aio_wait (segment=6) at /home/travis/src/storage/xtradb/fil/fil0fil.cc:6373
#4  0x0000000000d20392 in io_handler_thread (arg=0x21dd530) at /home/travis/src/storage/xtradb/srv/srv0start.cc:585
#5  0x00007fb58c456e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#6  0x00007fb58bb882ed in clone () from /lib/x86_64-linux-gnu/libc.so.6
#7  0x0000000000000000 in ?? ()

Thread 7 (Thread 0x7fb56756e700 (LWP 25756)):
#0  0x00007fb58d504644 in ?? () from /lib/x86_64-linux-gnu/libaio.so.1
#1  0x0000000000c59cbe in os_aio_linux_collect (array=0x384ed40, segment=0, seg_size=256) at /home/travis/src/storage/xtradb/os/os0file.cc:5547
#2  0x0000000000c5a098 in os_aio_linux_handle (global_seg=2, message1=0x7fb56756de08, message2=0x7fb56756de10, type=0x7fb56756de18, space_id=0x7fb56756de20) at /home/travis/src/storage/xtradb/os/os0file.cc:5701
#3  0x0000000000e2edcd in fil_aio_wait (segment=2) at /home/travis/src/storage/xtradb/fil/fil0fil.cc:6373
#4  0x0000000000d20392 in io_handler_thread (arg=0x21dd510) at /home/travis/src/storage/xtradb/srv/srv0start.cc:585
#5  0x00007fb58c456e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#6  0x00007fb58bb882ed in clone () from /lib/x86_64-linux-gnu/libc.so.6
#7  0x0000000000000000 in ?? ()

Thread 6 (Thread 0x7fb565d6b700 (LWP 25759)):
#0  0x00007fb58d504644 in ?? () from /lib/x86_64-linux-gnu/libaio.so.1
#1  0x0000000000c59cbe in os_aio_linux_collect (array=0x384ed40, segment=3, seg_size=256) at /home/travis/src/storage/xtradb/os/os0file.cc:5547
#2  0x0000000000c5a098 in os_aio_linux_handle (global_seg=5, message1=0x7fb565d6ae08, message2=0x7fb565d6ae10, type=0x7fb565d6ae18, space_id=0x7fb565d6ae20) at /home/travis/src/storage/xtradb/os/os0file.cc:5701
#3  0x0000000000e2edcd in fil_aio_wait (segment=5) at /home/travis/src/storage/xtradb/fil/fil0fil.cc:6373
#4  0x0000000000d20392 in io_handler_thread (arg=0x21dd528) at /home/travis/src/storage/xtradb/srv/srv0start.cc:585
#5  0x00007fb58c456e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#6  0x00007fb58bb882ed in clone () from /lib/x86_64-linux-gnu/libc.so.6
#7  0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7fb574cdc700 (LWP 25754)):
#0  0x00007fb58d504644 in ?? () from /lib/x86_64-linux-gnu/libaio.so.1
#1  0x0000000000c59cbe in os_aio_linux_collect (array=0x38a4280, segment=0, seg_size=256) at /home/travis/src/storage/xtradb/os/os0file.cc:5547
#2  0x0000000000c5a098 in os_aio_linux_handle (global_seg=0, message1=0x7fb574cdbe08, message2=0x7fb574cdbe10, type=0x7fb574cdbe18, space_id=0x7fb574cdbe20) at /home/travis/src/storage/xtradb/os/os0file.cc:5701
#3  0x0000000000e2edcd in fil_aio_wait (segment=0) at /home/travis/src/storage/xtradb/fil/fil0fil.cc:6373
#4  0x0000000000d20392 in io_handler_thread (arg=0x21dd500) at /home/travis/src/storage/xtradb/srv/srv0start.cc:585
#5  0x00007fb58c456e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#6  0x00007fb58bb882ed in clone () from /lib/x86_64-linux-gnu/libc.so.6
#7  0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7fb567d6f700 (LWP 25755)):
#0  0x00007fb58d504644 in ?? () from /lib/x86_64-linux-gnu/libaio.so.1
#1  0x0000000000c59cbe in os_aio_linux_collect (array=0x3892ff0, segment=0, seg_size=256) at /home/travis/src/storage/xtradb/os/os0file.cc:5547
#2  0x0000000000c5a098 in os_aio_linux_handle (global_seg=1, message1=0x7fb567d6ee08, message2=0x7fb567d6ee10, type=0x7fb567d6ee18, space_id=0x7fb567d6ee20) at /home/travis/src/storage/xtradb/os/os0file.cc:5701
#3  0x0000000000e2edcd in fil_aio_wait (segment=1) at /home/travis/src/storage/xtradb/fil/fil0fil.cc:6373
#4  0x0000000000d20392 in io_handler_thread (arg=0x21dd508) at /home/travis/src/storage/xtradb/srv/srv0start.cc:585
#5  0x00007fb58c456e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#6  0x00007fb58bb882ed in clone () from /lib/x86_64-linux-gnu/libc.so.6
#7  0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7fb588eae700 (LWP 25753)):
#0  0x00007fb58c45b0fe in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x0000000000f40542 in safe_cond_timedwait (cond=0x21a3540, mp=0x21a3480, abstime=0x7fb588eaddf0, file=0x10f9b90 "/home/travis/src/include/mysql/psi/mysql_thread.h", line=1202) at /home/travis/src/mysys/thr_mutex.c:547
#2  0x0000000000af175c in inline_mysql_cond_timedwait (that=0x21a3540, mutex=0x21a3480, abstime=0x7fb588eaddf0, src_file=0x10f9bc8 "/home/travis/src/storage/maria/ma_servicethread.c", src_line=116) at /home/travis/src/include/mysql/psi/mysql_thread.h:1202
#3  0x0000000000af1c04 in my_service_thread_sleep (control=0x17acf40, sleep_time=30000000000) at /home/travis/src/storage/maria/ma_servicethread.c:115
#4  0x0000000000ae6600 in ma_checkpoint_background (arg=0x1e) at /home/travis/src/storage/maria/ma_checkpoint.c:708
#5  0x00007fb58c456e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#6  0x00007fb58bb882ed in clone () from /lib/x86_64-linux-gnu/libc.so.6
#7  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fb58b77f700 (LWP 25752)):
#0  0x00007fb58c45b0fe in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x0000000000f40542 in safe_cond_timedwait (cond=0x21f7b20, mp=0x21f7a60, abstime=0x7fb58b77ee70, file=0x11d6380 "/home/travis/src/include/mysql/psi/mysql_thread.h", line=1202) at /home/travis/src/mysys/thr_mutex.c:547
#2  0x0000000000f414e8 in inline_mysql_cond_timedwait (that=0x21f7b20, mutex=0x21f7a60, abstime=0x7fb58b77ee70, src_file=0x11d63b8 "/home/travis/src/mysys/thr_timer.c", src_line=292) at /home/travis/src/include/mysql/psi/mysql_thread.h:1202
#3  0x0000000000f41ff8 in timer_handler (arg=0x0) at /home/travis/src/mysys/thr_timer.c:292
#4  0x00007fb58c456e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#5  0x00007fb58bb882ed in clone () from /lib/x86_64-linux-gnu/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fb58dd42740 (LWP 25751)):
#0  0x00007fb58c45bf8c in pthread_kill () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x0000000000f3ab81 in my_write_core (sig=11) at /home/travis/src/mysys/stacktrace.c:477
#2  0x00000000008e13ed in handle_fatal_signal (sig=11) at /home/travis/src/sql/signal_handler.cc:296
#3  <signal handler called>
#4  0x00007fb58bb7c913 in poll () from /lib/x86_64-linux-gnu/libc.so.6
#5  0x00000000005da1bb in handle_connections_sockets () at /home/travis/src/sql/mysqld.cc:6473
#6  0x00000000005d912f in mysqld_main (argc=33, argv=0x36d2598) at /home/travis/src/sql/mysqld.cc:5898
#7  0x00000000005ce164 in main (argc=33, argv=0x7ffe221076a8) at /home/travis/src/sql/main.cc:25