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  1. MariaDB Server
  2. MDEV-10513

sys_vars.innodb_fatal_semaphore_wait_threshold fails sporadically on p8-xenial-bintar-debug in buildbot

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    Details

    • Sprint:
      10.1.32

      Description

      Happened 4 times over the last 2 weeks, but it's not a definitive proof that it's a new failure, because the builder itself is new.
      http://askmonty.org/buildbot/builders/p8-xenial-bintar-debug/builds/83
      http://askmonty.org/buildbot/builders/p8-xenial-bintar-debug/builds/79
      http://askmonty.org/buildbot/builders/p8-xenial-bintar-debug/builds/74
      http://askmonty.org/buildbot/builders/p8-xenial-bintar-debug/builds/69

      sys_vars.innodb_fatal_semaphore_wait_threshold 'innodb_plugin' w1 [ fail ]
              Test ended at 2016-08-02 23:56:32
       
      CURRENT_TEST: sys_vars.innodb_fatal_semaphore_wait_threshold
      mysqltest: At line 117: query 'drop table if exists t1' failed: 2013: Lost connection to MySQL server during query
       
      The result from queries just before the failure was:
      < snip >
      create table t1 (id integer, x integer) engine = InnoDB;
      insert into t1 values(0, 0);
      set DEBUG_DBUG='+d,fatal-semaphore-timeout';
      set autocommit=0;
      # Sending query on con1,
      # the session will hold lock table mutex and sleep
      SELECT * from t1 where id = 0 FOR UPDATE;
      # Switch to connection con2
      set autocommit=0;
      # Sending query on con2,
      # the session will be blocked on the lock table mutex and
      # thus be put into sync arry
      SELECT * from t1 where id = 0 FOR UPDATE;
      # Switched to the default connection
      # Waitting for mysqld to crash
      # Mysqld crash was detected
      # Waitting for reconnect after mysqld restarts
      # Reconnected after mysqld was successfully restarted
      # Cleaning up before exit
      drop table if exists t1;
      

      Trying 'dbx' to get a backtrace
       
      Trying 'gdb' to get a backtrace
      Core generated by '/var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/sql/mysqld'
      Output from gdb follows. The first stack trace is from the failing thread.
      The following stack traces are from all threads (so the failing one is
      duplicated).
      --------------------------
      [New LWP 11594]
      [New LWP 11578]
      [New LWP 11562]
      [New LWP 11579]
      [New LWP 11581]
      [New LWP 11570]
      [New LWP 11595]
      [New LWP 11571]
      [New LWP 11597]
      [New LWP 11576]
      [New LWP 11599]
      [New LWP 11577]
      [New LWP 11580]
      [New LWP 11611]
      [New LWP 11593]
      [New LWP 11596]
      [New LWP 11613]
      [New LWP 11598]
      [New LWP 11600]
      [New LWP 11601]
      [New LWP 11602]
      [New LWP 11603]
      [New LWP 11612]
      [Thread debugging using libthread_db enabled]
      Using host libthread_db library "/lib/powerpc64le-linux-gnu/libthread_db.so.1".
      Core was generated by `/var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/sql/mysqld --default'.
      Program terminated with signal SIGABRT, Aborted.
      #0  0x00003fff88bf2e4c in pthread_kill () from /lib/powerpc64le-linux-gnu/libpthread.so.0
      [Current thread is 1 (Thread 0x3fff79bfefb0 (LWP 11594))]
      #0  0x00003fff88bf2e4c in pthread_kill () from /lib/powerpc64le-linux-gnu/libpthread.so.0
      #1  0x000000005fa7b348 in my_write_core (sig=6) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/mysys/stacktrace.c:477
      #2  0x000000005f20780c in handle_fatal_signal (sig=6) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/sql/signal_handler.cc:294
      #3  <signal handler called>
      #4  0x00003fff8864f27c in raise () from /lib/powerpc64le-linux-gnu/libc.so.6
      #5  0x00003fff886518f4 in abort () from /lib/powerpc64le-linux-gnu/libc.so.6
      #6  0x00003fff8125c078 in srv_error_monitor_thread (arg=0x0) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/srv/srv0srv.cc:1958
      #7  0x00003fff88be84a0 in start_thread () from /lib/powerpc64le-linux-gnu/libpthread.so.0
      #8  0x00003fff88737e74 in clone () from /lib/powerpc64le-linux-gnu/libc.so.6
       
      Thread 23 (Thread 0x3fff80d073b0 (LWP 11612)):
      #0  0x00003fff88729638 in select () from /lib/powerpc64le-linux-gnu/libc.so.6
      #1  0x00003fff8114b184 in os_thread_sleep (tm=3600000000) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/os/os0thread.cc:261
      #2  0x00003fff81107600 in lock_table (flags=0, table=0x3fff76bd03f8, mode=LOCK_IX, thr=0x3fff72441a08) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/lock/lock0lock.cc:5027
      #3  0x00003fff81227ffc in row_search_for_mysql (buf=0x3fff74170188 "\377", mode=1, prebuilt=0x3fff72441078, match_mode=0, direction=0) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/row/row0sel.cc:4108
      #4  0x00003fff8108e7c4 in ha_innodb::index_read (this=0x3fff76be1088, buf=0x3fff74170188 "\377", key_ptr=0x0, key_len=0, find_flag=HA_READ_AFTER_KEY) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/handler/ha_innodb.cc:9207
      #5  0x00003fff8108f98c in ha_innodb::index_first (this=0x3fff76be1088, buf=0x3fff74170188 "\377") at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/handler/ha_innodb.cc:9615
      #6  0x00003fff8108fce0 in ha_innodb::rnd_next (this=0x3fff76be1088, buf=0x3fff74170188 "\377") at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/handler/ha_innodb.cc:9712
      #7  0x000000005f20fd3c in handler::ha_rnd_next (this=0x3fff76be1088, buf=0x3fff74170188 "\377") at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/sql/handler.cc:2577
      #8  0x000000005f3d36c0 in rr_sequential (info=0x3fff74018848) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/sql/records.cc:470
      #9  0x000000005efbbd08 in join_init_read_record (tab=0x3fff74018788) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/sql/sql_select.cc:19207
      #10 0x000000005efb9244 in sub_select (join=0x3fff74016c60, join_tab=0x3fff74018788, end_of_records=false) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/sql/sql_select.cc:18292
      #11 0x000000005efb8864 in do_select (join=0x3fff74016c60, fields=0x3fff82a962a0, table=0x0, procedure=0x0) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/sql/sql_select.cc:17950
      #12 0x000000005ef8f898 in JOIN::exec_inner (this=0x3fff74016c60) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/sql/sql_select.cc:3214
      #13 0x000000005ef8d01c in JOIN::exec (this=0x3fff74016c60) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/sql/sql_select.cc:2504
      #14 0x000000005ef901f8 in mysql_select (thd=0x3fff82a92070, rref_pointer_array=0x3fff82a96400, tables=0x3fff74016288, wild_num=1, fields=..., conds=0x3fff74016a18, og_num=0, order=0x0, group=0x0, having=0x0, proc_param=0x0, select_options=2148272640, result=0x3fff74016c40, unit=0x3fff82a95a88, select_lex=0x3fff82a96188) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/sql/sql_select.cc:3437
      #15 0x000000005ef86330 in handle_select (thd=0x3fff82a92070, lex=0x3fff82a959c0, result=0x3fff74016c40, setup_tables_done_option=0) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/sql/sql_select.cc:384
      #16 0x000000005ef48f3c in execute_sqlcom_select (thd=0x3fff82a92070, all_tables=0x3fff74016288) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/sql/sql_parse.cc:5894
      #17 0x000000005ef3ec88 in mysql_execute_command (thd=0x3fff82a92070) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/sql/sql_parse.cc:2960
      #18 0x000000005ef4cd30 in mysql_parse (thd=0x3fff82a92070, rawbuf=0x3fff74016088 "SELECT * from t1 where id = 0 FOR UPDATE", length=40, parser_state=0x3fff80d05bd0) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/sql/sql_parse.cc:7314
      #19 0x000000005ef3a6fc in dispatch_command (command=COM_QUERY, thd=0x3fff82a92070, packet=0x3fff87713071 "", packet_length=40) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/sql/sql_parse.cc:1486
      #20 0x000000005ef393c8 in do_command (thd=0x3fff82a92070) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/sql/sql_parse.cc:1107
      #21 0x000000005f0af4a4 in do_handle_one_connection (thd_arg=0x3fff82a92070) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/sql/sql_connect.cc:1350
      #22 0x000000005f0af100 in handle_one_connection (arg=0x3fff82a92070) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/sql/sql_connect.cc:1262
      #23 0x000000005f887340 in pfs_spawn_thread (arg=0x3fff7fb2c1f0) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/perfschema/pfs.cc:1860
      #24 0x00003fff88be84a0 in start_thread () from /lib/powerpc64le-linux-gnu/libpthread.so.0
      #25 0x00003fff88737e74 in clone () from /lib/powerpc64le-linux-gnu/libc.so.6
       
      Thread 22 (Thread 0x3fff80dc73b0 (LWP 11603)):
      #0  0x00003fff88bf8514 in sigwait () from /lib/powerpc64le-linux-gnu/libpthread.so.0
      #1  0x000000005ee3539c in signal_hand (arg=0x0) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/sql/mysqld.cc:3474
      #2  0x000000005f887340 in pfs_spawn_thread (arg=0x3fff7fb29770) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/perfschema/pfs.cc:1860
      #3  0x00003fff88be84a0 in start_thread () from /lib/powerpc64le-linux-gnu/libpthread.so.0
      #4  0x00003fff88737e74 in clone () from /lib/powerpc64le-linux-gnu/libc.so.6
       
      Thread 21 (Thread 0x3fff74bfefb0 (LWP 11602)):
      #0  0x00003fff88729638 in select () from /lib/powerpc64le-linux-gnu/libc.so.6
      #1  0x00003fff8114b184 in os_thread_sleep (tm=1000000) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/os/os0thread.cc:261
      #2  0x00003fff80f6277c in btr_defragment_thread (arg=0x0) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/btr/btr0defragment.cc:758
      #3  0x00003fff88be84a0 in start_thread () from /lib/powerpc64le-linux-gnu/libpthread.so.0
      #4  0x00003fff88737e74 in clone () from /lib/powerpc64le-linux-gnu/libc.so.6
       
      Thread 20 (Thread 0x3fff753fefb0 (LWP 11601)):
      #0  0x00003fff88bf17e0 in pthread_cond_timedwait@@GLIBC_2.17 () from /lib/powerpc64le-linux-gnu/libpthread.so.0
      #1  0x00003fff8114932c in os_cond_wait_timed (cond=0x3fff84bfa9c0, fast_mutex=0x3fff84bfa980, abstime=0x3fff753fe3e0) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/os/os0sync.cc:177
      #2  0x00003fff81149f84 in os_event_wait_time_low (event=0x3fff84bfa980, time_in_usec=5000000, reset_sig_count=1) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/os/os0sync.cc:705
      #3  0x00003fff812b9da0 in ib_wqueue_timedwait (wq=0x3fff87ef0df8, wait_in_usecs=5000000) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/ut/ut0wqueue.cc:154
      #4  0x00003fff81065294 in fts_optimize_thread (arg=0x3fff87ef0df8) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/fts/fts0opt.cc:3064
      #5  0x00003fff88be84a0 in start_thread () from /lib/powerpc64le-linux-gnu/libpthread.so.0
      #6  0x00003fff88737e74 in clone () from /lib/powerpc64le-linux-gnu/libc.so.6
       
      Thread 19 (Thread 0x3fff75bfefb0 (LWP 11600)):
      #0  0x00003fff88bf17e0 in pthread_cond_timedwait@@GLIBC_2.17 () from /lib/powerpc64le-linux-gnu/libpthread.so.0
      #1  0x00003fff8114932c in os_cond_wait_timed (cond=0x3fff84bf4e40, fast_mutex=0x3fff84bf4e00, abstime=0x3fff75bfe4f0) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/os/os0sync.cc:177
      #2  0x00003fff81149f84 in os_event_wait_time_low (event=0x3fff84bf4e00, time_in_usec=10000000, reset_sig_count=1) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/os/os0sync.cc:705
      #3  0x00003fff80ffd458 in dict_stats_thread (arg=0x0) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/dict/dict0stats_bg.cc:545
      #4  0x00003fff88be84a0 in start_thread () from /lib/powerpc64le-linux-gnu/libpthread.so.0
      #5  0x00003fff88737e74 in clone () from /lib/powerpc64le-linux-gnu/libc.so.6
       
      Thread 18 (Thread 0x3fff7abfefb0 (LWP 11598)):
      #0  0x00003fff88bf17e0 in pthread_cond_timedwait@@GLIBC_2.17 () from /lib/powerpc64le-linux-gnu/libpthread.so.0
      #1  0x00003fff8114932c in os_cond_wait_timed (cond=0x3fff84bf42c0, fast_mutex=0x3fff84bf4280, abstime=0x3fff7abfe450) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/os/os0sync.cc:177
      #2  0x00003fff81149f84 in os_event_wait_time_low (event=0x3fff84bf4280, time_in_usec=1000000, reset_sig_count=1) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/os/os0sync.cc:705
      #3  0x00003fff80f91f60 in page_cleaner_sleep_if_needed (next_loop_time=1470196569887) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/buf/buf0flu.cc:2274
      #4  0x00003fff80f9209c in buf_flush_page_cleaner_thread (arg=0x0) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/buf/buf0flu.cc:2310
      #5  0x00003fff88be84a0 in start_thread () from /lib/powerpc64le-linux-gnu/libpthread.so.0
      #6  0x00003fff88737e74 in clone () from /lib/powerpc64le-linux-gnu/libc.so.6
       
      Thread 17 (Thread 0x3fff80ca73b0 (LWP 11613)):
      #0  0x00003fff88bf127c in pthread_cond_wait@@GLIBC_2.17 () from /lib/powerpc64le-linux-gnu/libpthread.so.0
      #1  0x00003fff8114948c in os_cond_wait (cond=0x3fff84bf4640, fast_mutex=0x3fff84bf4600) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/os/os0sync.cc:214
      #2  0x00003fff81149d64 in os_event_wait_low (event=0x3fff84bf4600, reset_sig_count=1) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/os/os0sync.cc:592
      #3  0x00003fff81269860 in sync_array_wait_event (arr=0x3fff87f30640, index=0) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/sync/sync0arr.cc:465
      #4  0x00003fff81271520 in mutex_spin_wait (mutex=0x3fff81f20078, file_name=0x3fff813179b8 "/var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/lock/lock0lock.cc", line=5025) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/sync/sync0sync.cc:604
      #5  0x00003fff810f38bc in mutex_enter_func (mutex=0x3fff81f20078, file_name=0x3fff813179b8 "/var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/lock/lock0lock.cc", line=5025) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/include/sync0sync.ic:225
      #6  0x00003fff810f397c in pfs_mutex_enter_func (mutex=0x3fff81f20078, file_name=0x3fff813179b8 "/var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/lock/lock0lock.cc", line=5025) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/include/sync0sync.ic:251
      #7  0x00003fff811075bc in lock_table (flags=0, table=0x3fff76bd03f8, mode=LOCK_IX, thr=0x3fff72f81708) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/lock/lock0lock.cc:5025
      #8  0x00003fff81227ffc in row_search_for_mysql (buf=0x3fff72d81a88 "\377", mode=1, prebuilt=0x3fff72f81078, match_mode=0, direction=0) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/row/row0sel.cc:4108
      #9  0x00003fff8108e7c4 in ha_innodb::index_read (this=0x3fff72d62088, buf=0x3fff72d81a88 "\377", key_ptr=0x0, key_len=0, find_flag=HA_READ_AFTER_KEY) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/handler/ha_innodb.cc:9207
      #10 0x00003fff8108f98c in ha_innodb::index_first (this=0x3fff72d62088, buf=0x3fff72d81a88 "\377") at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/handler/ha_innodb.cc:9615
      #11 0x00003fff8108fce0 in ha_innodb::rnd_next (this=0x3fff72d62088, buf=0x3fff72d81a88 "\377") at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/handler/ha_innodb.cc:9712
      #12 0x000000005f20fd3c in handler::ha_rnd_next (this=0x3fff72d62088, buf=0x3fff72d81a88 "\377") at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/sql/handler.cc:2577
      #13 0x000000005f3d36c0 in rr_sequential (info=0x3fff72c18848) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/sql/records.cc:470
      #14 0x000000005efbbd08 in join_init_read_record (tab=0x3fff72c18788) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/sql/sql_select.cc:19207
      #15 0x000000005efb9244 in sub_select (join=0x3fff72c16c60, join_tab=0x3fff72c18788, end_of_records=false) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/sql/sql_select.cc:18292
      #16 0x000000005efb8864 in do_select (join=0x3fff72c16c60, fields=0x3fff82a9c2a0, table=0x0, procedure=0x0) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/sql/sql_select.cc:17950
      #17 0x000000005ef8f898 in JOIN::exec_inner (this=0x3fff72c16c60) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/sql/sql_select.cc:3214
      #18 0x000000005ef8d01c in JOIN::exec (this=0x3fff72c16c60) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/sql/sql_select.cc:2504
      #19 0x000000005ef901f8 in mysql_select (thd=0x3fff82a98070, rref_pointer_array=0x3fff82a9c400, tables=0x3fff72c16288, wild_num=1, fields=..., conds=0x3fff72c16a18, og_num=0, order=0x0, group=0x0, having=0x0, proc_param=0x0, select_options=2148272640, result=0x3fff72c16c40, unit=0x3fff82a9ba88, select_lex=0x3fff82a9c188) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/sql/sql_select.cc:3437
      #20 0x000000005ef86330 in handle_select (thd=0x3fff82a98070, lex=0x3fff82a9b9c0, result=0x3fff72c16c40, setup_tables_done_option=0) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/sql/sql_select.cc:384
      #21 0x000000005ef48f3c in execute_sqlcom_select (thd=0x3fff82a98070, all_tables=0x3fff72c16288) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/sql/sql_parse.cc:5894
      #22 0x000000005ef3ec88 in mysql_execute_command (thd=0x3fff82a98070) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/sql/sql_parse.cc:2960
      #23 0x000000005ef4cd30 in mysql_parse (thd=0x3fff82a98070, rawbuf=0x3fff72c16088 "SELECT * from t1 where id = 0 FOR UPDATE", length=40, parser_state=0x3fff80ca5bd0) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/sql/sql_parse.cc:7314
      #24 0x000000005ef3a6fc in dispatch_command (command=COM_QUERY, thd=0x3fff82a98070, packet=0x3fff87718071 "", packet_length=40) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/sql/sql_parse.cc:1486
      #25 0x000000005ef393c8 in do_command (thd=0x3fff82a98070) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/sql/sql_parse.cc:1107
      #26 0x000000005f0af4a4 in do_handle_one_connection (thd_arg=0x3fff82a98070) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/sql/sql_connect.cc:1350
      #27 0x000000005f0af100 in handle_one_connection (arg=0x3fff82a98070) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/sql/sql_connect.cc:1262
      #28 0x000000005f887340 in pfs_spawn_thread (arg=0x3fff7fb2c6f0) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/perfschema/pfs.cc:1860
      #29 0x00003fff88be84a0 in start_thread () from /lib/powerpc64le-linux-gnu/libpthread.so.0
      #30 0x00003fff88737e74 in clone () from /lib/powerpc64le-linux-gnu/libc.so.6
       
      Thread 16 (Thread 0x3fff78bfefb0 (LWP 11596)):
      #0  0x00003fff88729638 in select () from /lib/powerpc64le-linux-gnu/libc.so.6
      #1  0x00003fff8114b184 in os_thread_sleep (tm=1000000) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/os/os0thread.cc:261
      #2  0x00003fff8125d9e0 in srv_master_sleep () at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/srv/srv0srv.cc:2514
      #3  0x00003fff8125dbac in srv_master_thread (arg=0x0) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/srv/srv0srv.cc:2558
      #4  0x00003fff88be84a0 in start_thread () from /lib/powerpc64le-linux-gnu/libpthread.so.0
      #5  0x00003fff88737e74 in clone () from /lib/powerpc64le-linux-gnu/libc.so.6
       
      Thread 15 (Thread 0x3fff7a3fefb0 (LWP 11593)):
      #0  0x00003fff88bf17e0 in pthread_cond_timedwait@@GLIBC_2.17 () from /lib/powerpc64le-linux-gnu/libpthread.so.0
      #1  0x00003fff8114932c in os_cond_wait_timed (cond=0x3fff84bf4740, fast_mutex=0x3fff84bf4700, abstime=0x3fff7a3fe4d0) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/os/os0sync.cc:177
      #2  0x00003fff81149f84 in os_event_wait_time_low (event=0x3fff84bf4700, time_in_usec=1000000, reset_sig_count=1) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/os/os0sync.cc:705
      #3  0x00003fff81113c68 in lock_wait_timeout_thread (arg=0x0) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/lock/lock0wait.cc:536
      #4  0x00003fff88be84a0 in start_thread () from /lib/powerpc64le-linux-gnu/libpthread.so.0
      #5  0x00003fff88737e74 in clone () from /lib/powerpc64le-linux-gnu/libc.so.6
       
      Thread 14 (Thread 0x3fff80d673b0 (LWP 11611)):
      #0  0x00003fff88726818 in poll () from /lib/powerpc64le-linux-gnu/libc.so.6
      #1  0x000000005faf5d04 in vio_io_wait (vio=0x3fff7fb2ba70, event=VIO_IO_EVENT_READ, timeout=28800000) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/vio/viosocket.c:972
      #2  0x000000005faf3f54 in vio_socket_io_wait (vio=0x3fff7fb2ba70, event=VIO_IO_EVENT_READ) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/vio/viosocket.c:108
      #3  0x000000005faf4190 in vio_read (vio=0x3fff7fb2ba70, buf=0x3fff8770e070 "\001", size=4) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/vio/viosocket.c:184
      #4  0x000000005ee491ec in my_real_read (net=0x3fff82a8c330, complen=0x3fff80d66320, header=1 '\001') at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/sql/net_serv.cc:873
      #5  0x000000005ee49c30 in my_net_read_packet (net=0x3fff82a8c330, read_from_server=1 '\001') at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/sql/net_serv.cc:1099
      #6  0x000000005ef38e58 in do_command (thd=0x3fff82a8c070) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/sql/sql_parse.cc:984
      #7  0x000000005f0af4a4 in do_handle_one_connection (thd_arg=0x3fff82a8c070) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/sql/sql_connect.cc:1350
      #8  0x000000005f0af100 in handle_one_connection (arg=0x3fff82a8c070) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/sql/sql_connect.cc:1262
      #9  0x000000005f887340 in pfs_spawn_thread (arg=0x3fff7fb2bcf0) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/perfschema/pfs.cc:1860
      #10 0x00003fff88be84a0 in start_thread () from /lib/powerpc64le-linux-gnu/libpthread.so.0
      #11 0x00003fff88737e74 in clone () from /lib/powerpc64le-linux-gnu/libc.so.6
       
      Thread 13 (Thread 0x3fff7c38efb0 (LWP 11580)):
      #0  0x00003fff890f0738 in ?? () from /lib/powerpc64le-linux-gnu/libaio.so.1
      #1  0x00003fff890f07a0 in io_getevents () from /lib/powerpc64le-linux-gnu/libaio.so.1
      #2  0x00003fff81146124 in os_aio_linux_collect (array=0x3fff87f701f0, segment=0, seg_size=256) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/os/os0file.cc:5326
      #3  0x00003fff811465c4 in os_aio_linux_handle (global_seg=4, message1=0x3fff7c38e4e0, message2=0x3fff7c38e4e8, type=0x3fff7c38e4f0) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/os/os0file.cc:5478
      #4  0x00003fff810187d4 in fil_aio_wait (segment=4) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/fil/fil0fil.cc:6045
      #5  0x00003fff81262e08 in io_handler_thread (arg=0x3fff813de460 <n+32>) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/srv/srv0start.cc:515
      #6  0x00003fff88be84a0 in start_thread () from /lib/powerpc64le-linux-gnu/libpthread.so.0
      #7  0x00003fff88737e74 in clone () from /lib/powerpc64le-linux-gnu/libc.so.6
       
      Thread 12 (Thread 0x3fff7db8efb0 (LWP 11577)):
      #0  0x00003fff890f0738 in ?? () from /lib/powerpc64le-linux-gnu/libaio.so.1
      #1  0x00003fff890f07a0 in io_getevents () from /lib/powerpc64le-linux-gnu/libaio.so.1
      #2  0x00003fff81146124 in os_aio_linux_collect (array=0x3fff87f700b0, segment=0, seg_size=256) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/os/os0file.cc:5326
      #3  0x00003fff811465c4 in os_aio_linux_handle (global_seg=1, message1=0x3fff7db8e4e0, message2=0x3fff7db8e4e8, type=0x3fff7db8e4f0) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/os/os0file.cc:5478
      #4  0x00003fff810187d4 in fil_aio_wait (segment=1) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/fil/fil0fil.cc:6045
      #5  0x00003fff81262e08 in io_handler_thread (arg=0x3fff813de448 <n+8>) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/srv/srv0start.cc:515
      #6  0x00003fff88be84a0 in start_thread () from /lib/powerpc64le-linux-gnu/libpthread.so.0
      #7  0x00003fff88737e74 in clone () from /lib/powerpc64le-linux-gnu/libc.so.6
       
      Thread 11 (Thread 0x3fff763fefb0 (LWP 11599)):
      #0  0x00003fff88bf127c in pthread_cond_wait@@GLIBC_2.17 () from /lib/powerpc64le-linux-gnu/libpthread.so.0
      #1  0x00003fff8114948c in os_cond_wait (cond=0x3fff87e60e40, fast_mutex=0x3fff87e60e00) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/os/os0sync.cc:214
      #2  0x00003fff81149d64 in os_event_wait_low (event=0x3fff87e60e00, reset_sig_count=1) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/os/os0sync.cc:592
      #3  0x00003fff80f883a0 in buf_dump_thread (arg=0x0) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/buf/buf0dump.cc:703
      #4  0x00003fff88be84a0 in start_thread () from /lib/powerpc64le-linux-gnu/libpthread.so.0
      #5  0x00003fff88737e74 in clone () from /lib/powerpc64le-linux-gnu/libc.so.6
       
      Thread 10 (Thread 0x3fff7e38efb0 (LWP 11576)):
      #0  0x00003fff890f0738 in ?? () from /lib/powerpc64le-linux-gnu/libaio.so.1
      #1  0x00003fff890f07a0 in io_getevents () from /lib/powerpc64le-linux-gnu/libaio.so.1
      #2  0x00003fff81146124 in os_aio_linux_collect (array=0x3fff87f70100, segment=0, seg_size=256) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/os/os0file.cc:5326
      #3  0x00003fff811465c4 in os_aio_linux_handle (global_seg=0, message1=0x3fff7e38e4e0, message2=0x3fff7e38e4e8, type=0x3fff7e38e4f0) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/os/os0file.cc:5478
      #4  0x00003fff810187d4 in fil_aio_wait (segment=0) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/fil/fil0fil.cc:6045
      #5  0x00003fff81262e08 in io_handler_thread (arg=0x3fff813de440 <n>) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/srv/srv0start.cc:515
      #6  0x00003fff88be84a0 in start_thread () from /lib/powerpc64le-linux-gnu/libpthread.so.0
      #7  0x00003fff88737e74 in clone () from /lib/powerpc64le-linux-gnu/libc.so.6
       
      Thread 9 (Thread 0x3fff783fefb0 (LWP 11597)):
      #0  0x00003fff88bf127c in pthread_cond_wait@@GLIBC_2.17 () from /lib/powerpc64le-linux-gnu/libpthread.so.0
      #1  0x00003fff8114948c in os_cond_wait (cond=0x3fff87e60cc0, fast_mutex=0x3fff87e60c80) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/os/os0sync.cc:214
      #2  0x00003fff81149d64 in os_event_wait_low (event=0x3fff87e60c80, reset_sig_count=1) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/os/os0sync.cc:592
      #3  0x00003fff8125e794 in srv_purge_coordinator_suspend (slot=0x3fff87f00a80, rseg_history_len=6) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/srv/srv0srv.cc:2848
      #4  0x00003fff8125ee00 in srv_purge_coordinator_thread (arg=0x0) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/srv/srv0srv.cc:2967
      #5  0x00003fff88be84a0 in start_thread () from /lib/powerpc64le-linux-gnu/libpthread.so.0
      #6  0x00003fff88737e74 in clone () from /lib/powerpc64le-linux-gnu/libc.so.6
       
      Thread 8 (Thread 0x3fff7f7fefb0 (LWP 11571)):
      #0  0x00003fff88bf17e0 in pthread_cond_timedwait@@GLIBC_2.17 () from /lib/powerpc64le-linux-gnu/libpthread.so.0
      #1  0x000000005fa8265c in safe_cond_timedwait (cond=0x609c6650 <COND_checkpoint>, mp=0x609c65a0 <LOCK_checkpoint>, abstime=0x3fff7f7fe3d0, file=0x5fcfd418 "/var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/include/mysql/psi/mysql_thread.h", line=1191) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/mysys/thr_mutex.c:547
      #2  0x000000005f912008 in inline_mysql_cond_timedwait (that=0x609c6650 <COND_checkpoint>, mutex=0x609c65a0 <LOCK_checkpoint>, abstime=0x3fff7f7fe3d0, src_file=0x5fcfd478 "/var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/maria/ma_servicethread.c", src_line=116) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/include/mysql/psi/mysql_thread.h:1191
      #3  0x000000005f912698 in my_service_thread_sleep (control=0x5ff7ce00 <checkpoint_control>, sleep_time=29000000000) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/maria/ma_servicethread.c:115
      #4  0x000000005f9032f8 in ma_checkpoint_background (arg=0x1e) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/maria/ma_checkpoint.c:708
      #5  0x000000005f887340 in pfs_spawn_thread (arg=0x3fff87e544f0) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/perfschema/pfs.cc:1860
      #6  0x00003fff88be84a0 in start_thread () from /lib/powerpc64le-linux-gnu/libpthread.so.0
      #7  0x00003fff88737e74 in clone () from /lib/powerpc64le-linux-gnu/libc.so.6
       
      Thread 7 (Thread 0x3fff793fefb0 (LWP 11595)):
      #0  0x00003fff88bf17e0 in pthread_cond_timedwait@@GLIBC_2.17 () from /lib/powerpc64le-linux-gnu/libpthread.so.0
      #1  0x00003fff8114932c in os_cond_wait_timed (cond=0x3fff87e60dc0, fast_mutex=0x3fff87e60d80, abstime=0x3fff793fe460) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/os/os0sync.cc:177
      #2  0x00003fff81149f84 in os_event_wait_time_low (event=0x3fff87e60d80, time_in_usec=5000000, reset_sig_count=1) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/os/os0sync.cc:705
      #3  0x00003fff8125b898 in srv_monitor_thread (arg=0x0) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/srv/srv0srv.cc:1727
      #4  0x00003fff88be84a0 in start_thread () from /lib/powerpc64le-linux-gnu/libpthread.so.0
      #5  0x00003fff88737e74 in clone () from /lib/powerpc64le-linux-gnu/libc.so.6
       
      Thread 6 (Thread 0x3fff81bfefb0 (LWP 11570)):
      #0  0x00003fff88bf17e0 in pthread_cond_timedwait@@GLIBC_2.17 () from /lib/powerpc64le-linux-gnu/libpthread.so.0
      #1  0x000000005fa8265c in safe_cond_timedwait (cond=0x609cfa30 <COND_timer>, mp=0x609cf980 <LOCK_timer>, abstime=0x3fff81bfe4d0, file=0x5fd20748 "/var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/include/mysql/psi/mysql_thread.h", line=1191) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/mysys/thr_mutex.c:547
      #2  0x000000005fa83cb0 in inline_mysql_cond_timedwait (that=0x609cfa30 <COND_timer>, mutex=0x609cf980 <LOCK_timer>, abstime=0x3fff81bfe4d0, src_file=0x5fd207a8 "/var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/mysys/thr_timer.c", src_line=292) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/include/mysql/psi/mysql_thread.h:1191
      #3  0x000000005fa84bd4 in timer_handler (arg=0x0) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/mysys/thr_timer.c:292
      #4  0x000000005f887340 in pfs_spawn_thread (arg=0x3fff87e51f70) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/perfschema/pfs.cc:1860
      #5  0x00003fff88be84a0 in start_thread () from /lib/powerpc64le-linux-gnu/libpthread.so.0
      #6  0x00003fff88737e74 in clone () from /lib/powerpc64le-linux-gnu/libc.so.6
       
      Thread 5 (Thread 0x3fff7bb8efb0 (LWP 11581)):
      #0  0x00003fff890f0738 in ?? () from /lib/powerpc64le-linux-gnu/libaio.so.1
      #1  0x00003fff890f07a0 in io_getevents () from /lib/powerpc64le-linux-gnu/libaio.so.1
      #2  0x00003fff81146124 in os_aio_linux_collect (array=0x3fff87f701f0, segment=1, seg_size=256) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/os/os0file.cc:5326
      #3  0x00003fff811465c4 in os_aio_linux_handle (global_seg=5, message1=0x3fff7bb8e4e0, message2=0x3fff7bb8e4e8, type=0x3fff7bb8e4f0) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/os/os0file.cc:5478
      #4  0x00003fff810187d4 in fil_aio_wait (segment=5) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/fil/fil0fil.cc:6045
      #5  0x00003fff81262e08 in io_handler_thread (arg=0x3fff813de468 <n+40>) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/srv/srv0start.cc:515
      #6  0x00003fff88be84a0 in start_thread () from /lib/powerpc64le-linux-gnu/libpthread.so.0
      #7  0x00003fff88737e74 in clone () from /lib/powerpc64le-linux-gnu/libc.so.6
       
      Thread 4 (Thread 0x3fff7cb8efb0 (LWP 11579)):
      #0  0x00003fff890f0738 in ?? () from /lib/powerpc64le-linux-gnu/libaio.so.1
      #1  0x00003fff890f07a0 in io_getevents () from /lib/powerpc64le-linux-gnu/libaio.so.1
      #2  0x00003fff81146124 in os_aio_linux_collect (array=0x3fff87f70150, segment=1, seg_size=256) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/os/os0file.cc:5326
      #3  0x00003fff811465c4 in os_aio_linux_handle (global_seg=3, message1=0x3fff7cb8e4e0, message2=0x3fff7cb8e4e8, type=0x3fff7cb8e4f0) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/os/os0file.cc:5478
      #4  0x00003fff810187d4 in fil_aio_wait (segment=3) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/fil/fil0fil.cc:6045
      #5  0x00003fff81262e08 in io_handler_thread (arg=0x3fff813de458 <n+24>) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/srv/srv0start.cc:515
      #6  0x00003fff88be84a0 in start_thread () from /lib/powerpc64le-linux-gnu/libpthread.so.0
      #7  0x00003fff88737e74 in clone () from /lib/powerpc64le-linux-gnu/libc.so.6
       
      Thread 3 (Thread 0x3fff891ec810 (LWP 11562)):
      #0  0x00003fff88726818 in poll () from /lib/powerpc64le-linux-gnu/libc.so.6
      #1  0x000000005ee3c884 in handle_connections_sockets () at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/sql/mysqld.cc:6523
      #2  0x000000005ee3b540 in mysqld_main (argc=144, argv=0x3fff87fe10c0) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/sql/mysqld.cc:5948
      #3  0x000000005ee2c958 in main (argc=21, argv=0x3fffebafcad8) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/sql/main.cc:25
       
      Thread 2 (Thread 0x3fff7d38efb0 (LWP 11578)):
      #0  0x00003fff890f0738 in ?? () from /lib/powerpc64le-linux-gnu/libaio.so.1
      #1  0x00003fff890f07a0 in io_getevents () from /lib/powerpc64le-linux-gnu/libaio.so.1
      #2  0x00003fff81146124 in os_aio_linux_collect (array=0x3fff87f70150, segment=0, seg_size=256) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/os/os0file.cc:5326
      #3  0x00003fff811465c4 in os_aio_linux_handle (global_seg=2, message1=0x3fff7d38e4e0, message2=0x3fff7d38e4e8, type=0x3fff7d38e4f0) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/os/os0file.cc:5478
      #4  0x00003fff810187d4 in fil_aio_wait (segment=2) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/fil/fil0fil.cc:6045
      #5  0x00003fff81262e08 in io_handler_thread (arg=0x3fff813de450 <n+16>) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/srv/srv0start.cc:515
      #6  0x00003fff88be84a0 in start_thread () from /lib/powerpc64le-linux-gnu/libpthread.so.0
      #7  0x00003fff88737e74 in clone () from /lib/powerpc64le-linux-gnu/libc.so.6
       
      Thread 1 (Thread 0x3fff79bfefb0 (LWP 11594)):
      #0  0x00003fff88bf2e4c in pthread_kill () from /lib/powerpc64le-linux-gnu/libpthread.so.0
      #1  0x000000005fa7b348 in my_write_core (sig=6) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/mysys/stacktrace.c:477
      #2  0x000000005f20780c in handle_fatal_signal (sig=6) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/sql/signal_handler.cc:294
      #3  <signal handler called>
      #4  0x00003fff8864f27c in raise () from /lib/powerpc64le-linux-gnu/libc.so.6
      #5  0x00003fff886518f4 in abort () from /lib/powerpc64le-linux-gnu/libc.so.6
      #6  0x00003fff8125c078 in srv_error_monitor_thread (arg=0x0) at /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/storage/innobase/srv/srv0srv.cc:1958
      #7  0x00003fff88be84a0 in start_thread () from /lib/powerpc64le-linux-gnu/libpthread.so.0
      #8  0x00003fff88737e74 in clone () from /lib/powerpc64le-linux-gnu/libc.so.6
       
      Compressed file /var/lib/buildbot/maria-slave/p8-xenial-bintar-debug/build/mysql-test/var/log/sys_vars.innodb_fatal_semaphore_wait_threshold-innodb_plugin/mysqld.1/data/core
      worker[1] > Restart  - not started
      ***Warnings generated in error logs during shutdown after running tests: sys_vars.innodb_fatal_semaphore_wait_threshold
       
      InnoDB: Error: semaphore wait has lasted > 1 seconds
      Attempting backtrace. You can use the following information to find out
      InnoDB: Error: semaphore wait has lasted > 1 seconds
      Attempting backtrace. You can use the following information to find out
      

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              • Assignee:
                thiru Thirunarayanan Balathandayuthapani
                Reporter:
                elenst Elena Stepanova
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                • Created:
                  Updated:
                  Resolved: