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  1. MariaDB Server
  2. MDEV-24110

rpl.rpl_parallel (rpl.rpl_parallel_stop_on_con_kill) failed in bb with Lost connection after STOP SLAVE

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    Details

    • Type: Bug
    • Status: Open (View Workflow)
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: 10.4, 10.5
    • Fix Version/s: 10.4, 10.5
    • Component/s: Tests
    • Labels:
      None

      Description

      https://buildbot.askmonty.org/buildbot/builders/kvm-fulltest2/builds/25399/steps/mtr_nm/logs/stdio

      rpl.rpl_parallel 'innodb,stmt'           w3 [ fail ]
              Test ended at 2020-10-29 19:22:56
       
      CURRENT_TEST: rpl.rpl_parallel
      mysqltest: In included file "./include/stop_slave.inc": 
      included from /mnt/buildbot/build/mariadb-10.4.16/mysql-test/suite/rpl/include/rpl_parallel.inc at line 2131:
      included from /mnt/buildbot/build/mariadb-10.4.16/mysql-test/suite/rpl/t/rpl_parallel.test at line 2:
      At line 82: query 'STOP SLAVE' failed: 2013: Lost connection to MySQL server during query
       
      The result from queries just before the failure was:
      < snip >
      SET SESSION debug_dbug=@old_dbug_slave;
      SELECT * FROM t3 WHERE a>=200 ORDER BY a;
      a	b
      201	3
      202	4
      203	4
      204	4
      205	3
      include/save_master_gtid.inc
      connection server_2;
      include/start_slave.inc
      include/sync_with_master_gtid.inc
      SELECT * FROM t3 WHERE a>=200 ORDER BY a;
      a	b
      201	3
      202	4
      203	4
      204	4
      205	3
      include/stop_slave.inc
       
      More results from queries before failure can be found in /mnt/buildbot/build/mariadb-10.4.16/mysql-test/var/3/log/rpl_parallel.log
      
      

       
      2020-10-29 19:22:55 573 [Note] Slave SQL thread initialized, starting replication in log 'master-bin.000005' at position 11679, relay log './slave-relay-bin.000001' position: 4; GTID position '0-1-1032,1-1-10,2-1-8,3-1-1'
      201029 19:22:55 [ERROR] mysqld got signal 11 ;
      This could be because you hit a bug. It is also possible that this binary
      or one of the libraries it was linked against is corrupt, improperly built,
      or misconfigured. This error can also be caused by malfunctioning hardware.
       
      To report this bug, see https://mariadb.com/kb/en/reporting-bugs
       
      We will try our best to scrape up some info that will hopefully help
      diagnose the problem, but since we have already crashed, 
      something is definitely wrong and this may fail.
       
      Server version: 10.4.16-MariaDB-debug-log
      key_buffer_size=1048576
      read_buffer_size=131072
      max_used_connections=7
      max_threads=153
      thread_count=26
      It is possible that mysqld could use up to 
      key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 62223 K  bytes of memory
      Hope that's ok; if not, decrease some variables in the equation.
       
      Thread pointer: 0xa7e07468
      Attempting backtrace. You can use the following information to find out
      where mysqld died. If you see no messages after this, something went
      terribly wrong...
      stack_bottom = 0xafffe224 thread_stack 0x49000
      2020-10-29 19:22:55 573 [Note] Error reading relay log event: slave SQL thread was killed
      2020-10-29 19:22:55 573 [Note] Slave SQL thread exiting, replication stopped in log 'master-bin.000005' at position 14790; GTID position '0-1-1050,1-1-10,2-1-8,3-1-1'
      2020-10-29 19:22:55 572 [Note] Slave I/O thread exiting, read up to log 'master-bin.000005', position 14790; GTID position 1-1-10,0-1-1050,3-1-1,2-1-8
      safe_mutex: Trying to destroy a mutex LOCK_wakeup_ready that was locked at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/slave.cc, line 537 at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/sql_class.cc, line 1698
      Fatal signal 6 while backtracing
      ----------SERVER LOG END-------------
      [Thread debugging using libthread_db enabled]
      Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
      Core was generated by `/mnt/buildbot/build/mariadb-10.4.16/sql/mysqld --defaults-group-suffix=.2 --def'.
      Program terminated with signal SIGABRT, Aborted.
      #0  0xb7753c31 in __kernel_vsyscall ()
      [Current thread is 1 (Thread 0xa7fb2b40 (LWP 20418))]
      #0  0xb7753c31 in __kernel_vsyscall ()
      #1  0xb7031e89 in raise () from /lib/i386-linux-gnu/libc.so.6
      #2  0xb70333e7 in abort () from /lib/i386-linux-gnu/libc.so.6
      #3  0x811a22e3 in safe_mutex_destroy (mp=0xafe774b4, file=0x8128446c "/home/buildbot/buildbot/build/mariadb-10.4.16/sql/sql_class.cc", line=1698) at /home/buildbot/buildbot/build/mariadb-10.4.16/mysys/thr_mutex.c:600
      #4  0x80550f9f in inline_mysql_mutex_destroy (that=0xafe774b4, src_file=0x8128446c "/home/buildbot/buildbot/build/mariadb-10.4.16/sql/sql_class.cc", src_line=1698) at /home/buildbot/buildbot/build/mariadb-10.4.16/include/mysql/psi/mysql_thread.h:676
      #5  0x80556962 in THD::~THD (this=0xafe739c8, __in_chrg=<optimized out>) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/sql_class.cc:1698
      #6  0x80556ef7 in THD::~THD (this=0xafe739c8, __in_chrg=<optimized out>) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/sql_class.cc:1746
      #7  0x807c3402 in handle_rpl_parallel_thread (arg=0xa7e1e784) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/rpl_parallel.cc:1503
      #8  0x80b7d195 in pfs_spawn_thread (arg=0xa7e07070) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/perfschema/pfs.cc:1869
      #9  0xb76ad2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #10 0xb70ed16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 38 (Thread 0xb6e737c0 (LWP 18720)):
      #0  0xb7753c31 in __kernel_vsyscall ()
      #1  0xb70e2f8f in poll () from /lib/i386-linux-gnu/libc.so.6
      #2  0x8049864a in handle_connections_sockets () at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/mysqld.cc:6481
      #3  0x8049792e in mysqld_main (argc=158, argv=0x82c57330) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/mysqld.cc:5917
      #4  0x8048b33b in main (argc=25, argv=0xbfa28274) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/main.cc:25
       
      Thread 37 (Thread 0xab9f9b40 (LWP 18756)):
      #0  0xb7753c31 in __kernel_vsyscall ()
      #1  0xb76b2e56 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80d88bcc in os_event::timed_wait (this=0x82f68a38, abstime=0xab9f9218) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0event.cc:275
      #3  0x80d88edd in os_event::wait_time_low (this=0x82f68a38, time_in_usec=1000000, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0event.cc:385
      #4  0x80d890b3 in os_event_wait_time_low (event=0x82f68a38, time_in_usec=1000000, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0event.cc:485
      #5  0x80d466e1 in lock_wait_timeout_thread () at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/lock/lock0wait.cc:522
      #6  0xb76ad2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #7  0xb70ed16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 36 (Thread 0xaa9f7b40 (LWP 18758)):
      #0  0xb7753c31 in __kernel_vsyscall ()
      #1  0xb76b2e56 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80d88bcc in os_event::timed_wait (this=0x82e36fa8, abstime=0xaa9f7208) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0event.cc:275
      #3  0x80d88edd in os_event::wait_time_low (this=0x82e36fa8, time_in_usec=5000000, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0event.cc:385
      #4  0x80d890b3 in os_event_wait_time_low (event=0x82e36fa8, time_in_usec=5000000, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0event.cc:485
      #5  0x80e9f16e in srv_monitor_thread () at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/srv/srv0srv.cc:1690
      #6  0xb76ad2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #7  0xb70ed16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 35 (Thread 0xa7dffb40 (LWP 18769)):
      #0  0xb7753c31 in __kernel_vsyscall ()
      #1  0xb76b2a8c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80d8933e in os_event::wait (this=0x82e36ee8) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0event.cc:158
      #3  0x80d88d9f in os_event::wait_low (this=0x82e36ee8, reset_sig_count=826) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0event.cc:325
      #4  0x80d890e5 in os_event_wait_low (event=0x82e36ee8, reset_sig_count=0) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0event.cc:502
      #5  0x80e9d13e in srv_resume_thread (slot=0x81b1c178 <srv_sys+312>, sig_count=0, wait=true, timeout_usec=0) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/srv/srv0srv.cc:910
      #6  0x80ea1803 in srv_worker_thread (arg=0x0) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/srv/srv0srv.cc:2517
      #7  0xb76ad2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #8  0xb70ed16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 34 (Thread 0xaff6ab40 (LWP 18792)):
      #0  0xb7753c31 in __kernel_vsyscall ()
      #1  0xb70e2f8f in poll () from /lib/i386-linux-gnu/libc.so.6
      #2  0x81200a71 in vio_io_wait (vio=0x830b6168, event=VIO_IO_EVENT_READ, timeout=28800000) at /home/buildbot/buildbot/build/mariadb-10.4.16/vio/viosocket.c:980
      #3  0x811ff140 in vio_socket_io_wait (vio=0x830b6168, event=VIO_IO_EVENT_READ) at /home/buildbot/buildbot/build/mariadb-10.4.16/vio/viosocket.c:118
      #4  0x811ff330 in vio_read (vio=0x830b6168, buf=0xafe79a60 "\001", size=4) at /home/buildbot/buildbot/build/mariadb-10.4.16/vio/viosocket.c:199
      #5  0x80a93d4f in my_real_read (net=0xafe05a24, complen=0xaff6a118, header=1 '\001') at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/net_serv.cc:975
      #6  0x80a9459a in my_net_read_packet_reallen (net=0xafe05a24, read_from_server=1 '\001', reallen=0xaff6a18c) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/net_serv.cc:1256
      #7  0x80a9454c in my_net_read_packet (net=0xafe05a24, read_from_server=1 '\001') at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/net_serv.cc:1240
      #8  0x805c4a13 in do_command (thd=0xafe05850) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/sql_parse.cc:1229
      #9  0x80740188 in do_handle_one_connection (connect=0x830dfba8) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/sql_connect.cc:1412
      #10 0x8073feab in handle_one_connection (arg=0x830dfba8) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/sql_connect.cc:1316
      #11 0x80b7d195 in pfs_spawn_thread (arg=0x830f66d8) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/perfschema/pfs.cc:1869
      #12 0xb76ad2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #13 0xb70ed16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 33 (Thread 0xac1fab40 (LWP 18760)):
      #0  0xb7753c31 in __kernel_vsyscall ()
      #1  0xb76b2e56 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80d88bcc in os_event::timed_wait (this=0x82f4ea80, abstime=0xac1fa0f8) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0event.cc:275
      #3  0x80d88edd in os_event::wait_time_low (this=0x82f4ea80, time_in_usec=5000000, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0event.cc:385
      #4  0x80d890b3 in os_event_wait_time_low (event=0x82f4ea80, time_in_usec=5000000, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0event.cc:485
      #5  0x80f0eedb in ib_wqueue_timedwait (wq=0x82f4e960, wait_in_usecs=5000000) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/ut/ut0wqueue.cc:156
      #6  0x81085772 in fts_optimize_thread (arg=0x82f4e960) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/fts/fts0opt.cc:2830
      #7  0xb76ad2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #8  0xb70ed16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 32 (Thread 0xa6bfeb40 (LWP 18771)):
      #0  0xb7753c31 in __kernel_vsyscall ()
      #1  0xb76b2a8c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80d8933e in os_event::wait (this=0x82e37008) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0event.cc:158
      #3  0x80d88d9f in os_event::wait_low (this=0x82e37008, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0event.cc:325
      #4  0x80d890e5 in os_event_wait_low (event=0x82e37008, reset_sig_count=0) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0event.cc:502
      #5  0x80fa7a9c in buf_dump_thread () at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/buf/buf0dump.cc:832
      #6  0xb76ad2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #7  0xb70ed16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 31 (Thread 0xafffeb40 (LWP 18779)):
      #0  0xb7753c31 in __kernel_vsyscall ()
      #1  0xb70e5ab5 in select () from /lib/i386-linux-gnu/libc.so.6
      #2  0x811bb6d1 in my_addr_resolve (ptr=0x8119d092 <my_print_stacktrace+60>, loc=0xafffd9b4) at /home/buildbot/buildbot/build/mariadb-10.4.16/mysys/my_addr_resolve.c:253
      #3  0x8119cfcd in print_with_addr_resolve (addrs=0xafffda00, n=7) at /home/buildbot/buildbot/build/mariadb-10.4.16/mysys/stacktrace.c:159
      #4  0x8119d0c8 in my_print_stacktrace (stack_bottom=0xafffe224 "ht\340\247", thread_stack=299008, silent=0 '\000') at /home/buildbot/buildbot/build/mariadb-10.4.16/mysys/stacktrace.c:178
      #5  0x8091ba94 in handle_fatal_signal (sig=11) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/signal_handler.cc:207
      #6  <signal handler called>
      #7  handle_slave_background (arg=0x0) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/slave.cc:539
      #8  0x80b7d195 in pfs_spawn_thread (arg=0x8302d3a8) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/perfschema/pfs.cc:1869
      #9  0xb76ad2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #10 0xb70ed16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 30 (Thread 0xa63fdb40 (LWP 18772)):
      #0  0xb7753c31 in __kernel_vsyscall ()
      #1  0xb76b68aa in nanosleep () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80d89736 in os_thread_sleep (tm=1000000) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0thread.cc:231
      #3  0x80f7b8a9 in btr_defragment_thread () at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/btr/btr0defragment.cc:700
      #4  0xb76ad2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #5  0xb70ed16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 29 (Thread 0xb0f60b40 (LWP 18777)):
      #0  0xb7753c31 in __kernel_vsyscall ()
      #1  0xb7032e8c in sigwaitinfo () from /lib/i386-linux-gnu/libc.so.6
      #2  0x8048b3c2 in my_sigwait (set=0xb0f601d0, sig=0xb0f601a0, code=0xb0f601a4) at /home/buildbot/buildbot/build/mariadb-10.4.16/include/my_pthread.h:196
      #3  0x8049176d in signal_hand (arg=0x0) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/mysqld.cc:3251
      #4  0x80b7d195 in pfs_spawn_thread (arg=0x830260a8) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/perfschema/pfs.cc:1869
      #5  0xb76ad2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #6  0xb70ed16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 28 (Thread 0xa5bfcb40 (LWP 18773)):
      #0  0xb7753c31 in __kernel_vsyscall ()
      #1  0xb76b2a8c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80d8933e in os_event::wait (this=0x82e370c8) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0event.cc:158
      #3  0x80d88d9f in os_event::wait_low (this=0x82e370c8, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0event.cc:325
      #4  0x80d890e5 in os_event_wait_low (event=0x82e370c8, reset_sig_count=0) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0event.cc:502
      #5  0x80f8d2b0 in buf_resize_thread () at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/buf/buf0buf.cc:3142
      #6  0xb76ad2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #7  0xb70ed16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 27 (Thread 0xa8ffeb40 (LWP 18767)):
      #0  0xb7753c31 in __kernel_vsyscall ()
      #1  0xb76b2e56 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80d88bcc in os_event::timed_wait (this=0x82e36dc8, abstime=0xa8ffe198) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0event.cc:275
      #3  0x80d88edd in os_event::wait_time_low (this=0x82e36dc8, time_in_usec=10000, reset_sig_count=250) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0event.cc:385
      #4  0x80d890b3 in os_event_wait_time_low (event=0x82e36dc8, time_in_usec=10000, reset_sig_count=250) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0event.cc:485
      #5  0x80e9d117 in srv_resume_thread (slot=0x81b1c124 <srv_sys+228>, sig_count=250, wait=true, timeout_usec=10000) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/srv/srv0srv.cc:906
      #6  0x80ea1cd8 in srv_purge_coordinator_suspend (slot=0x81b1c124 <srv_sys+228>, rseg_history_len=62) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/srv/srv0srv.cc:2657
      #7  0x80ea1fca in srv_purge_coordinator_thread (arg=0x0) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/srv/srv0srv.cc:2732
      #8  0xb76ad2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #9  0xb70ed16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 26 (Thread 0xa53fbb40 (LWP 18774)):
      #0  0xb7753c31 in __kernel_vsyscall ()
      #1  0xb76b2a8c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x811a1e21 in safe_cond_wait (cond=0xa53fb1c4, mp=0xa53fb1f8, file=0x814e3f60 "/home/buildbot/buildbot/build/mariadb-10.4.16/include/mysql/psi/mysql_thread.h", line=1185) at /home/buildbot/buildbot/build/mariadb-10.4.16/mysys/thr_mutex.c:492
      #3  0x80c74ef1 in inline_mysql_cond_wait (that=0xa53fb1c4, mutex=0xa53fb1f8, src_file=0x814e5dec "/home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/handler/ha_innodb.cc", src_line=311) at /home/buildbot/buildbot/build/mariadb-10.4.16/include/mysql/psi/mysql_thread.h:1185
      #4  0x80c7a7e5 in thd_destructor_proxy () at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/handler/ha_innodb.cc:311
      #5  0x80b7d195 in pfs_spawn_thread (arg=0x82fbc718) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/perfschema/pfs.cc:1869
      #6  0xb76ad2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #7  0xb70ed16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 25 (Thread 0xa4b66b40 (LWP 19642)):
      #0  0xb7753c31 in __kernel_vsyscall ()
      #1  0xb70e2f8f in poll () from /lib/i386-linux-gnu/libc.so.6
      #2  0x81200a71 in vio_io_wait (vio=0x8307edf8, event=VIO_IO_EVENT_READ, timeout=28800000) at /home/buildbot/buildbot/build/mariadb-10.4.16/vio/viosocket.c:980
      #3  0x811ff140 in vio_socket_io_wait (vio=0x8307edf8, event=VIO_IO_EVENT_READ) at /home/buildbot/buildbot/build/mariadb-10.4.16/vio/viosocket.c:118
      #4  0x811ff330 in vio_read (vio=0x8307edf8, buf=0xb0e0a5c8 "\a", size=4) at /home/buildbot/buildbot/build/mariadb-10.4.16/vio/viosocket.c:199
      #5  0x80a93d4f in my_real_read (net=0xb0e066ec, complen=0xa4b66118, header=1 '\001') at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/net_serv.cc:975
      #6  0x80a9459a in my_net_read_packet_reallen (net=0xb0e066ec, read_from_server=1 '\001', reallen=0xa4b6618c) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/net_serv.cc:1256
      #7  0x80a9454c in my_net_read_packet (net=0xb0e066ec, read_from_server=1 '\001') at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/net_serv.cc:1240
      #8  0x805c4a13 in do_command (thd=0xb0e06518) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/sql_parse.cc:1229
      #9  0x80740188 in do_handle_one_connection (connect=0x8307ed08) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/sql_connect.cc:1412
      #10 0x8073feab in handle_one_connection (arg=0x8307ed08) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/sql_connect.cc:1316
      #11 0x80b7d195 in pfs_spawn_thread (arg=0x8302cd88) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/perfschema/pfs.cc:1869
      #12 0xb76ad2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #13 0xb70ed16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 24 (Thread 0xaffb4b40 (LWP 18789)):
      #0  0xb7753c31 in __kernel_vsyscall ()
      #1  0xb76b2a8c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x811a1e21 in safe_cond_wait (cond=0x81ce198c <global_rpl_thread_pool+108>, mp=0x81ce1928 <global_rpl_thread_pool+8>, file=0x812ff380 "/home/buildbot/buildbot/build/mariadb-10.4.16/include/mysql/psi/mysql_thread.h", line=1174) at /home/buildbot/buildbot/build/mariadb-10.4.16/mysys/thr_mutex.c:492
      #3  0x807bef09 in inline_mysql_cond_wait (that=0x81ce198c <global_rpl_thread_pool+108>, mutex=0x81ce1928 <global_rpl_thread_pool+8>, src_file=0x812ff7f4 "/home/buildbot/buildbot/build/mariadb-10.4.16/sql/rpl_parallel.cc", src_line=489) at /home/buildbot/buildbot/build/mariadb-10.4.16/include/mysql/psi/mysql_thread.h:1174
      #4  0x807c0a48 in pool_mark_busy (pool=0x81ce1920 <global_rpl_thread_pool>, thd=0xa98059e0) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/rpl_parallel.cc:489
      #5  0x807c3518 in rpl_parallel_change_thread_count (pool=0x81ce1920 <global_rpl_thread_pool>, new_count=0, force=false) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/rpl_parallel.cc:1549
      #6  0x807c3dca in rpl_parallel_inactivate_pool (pool=0x81ce1920 <global_rpl_thread_pool>) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/rpl_parallel.cc:1758
      #7  0x807c3d0d in rpl_parallel_resize_pool_if_no_slaves () at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/rpl_parallel.cc:1721
      #8  0x805ce2ed in mysql_execute_command (thd=0xa98059e0) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/sql_parse.cc:4246
      #9  0x805db54d in mysql_parse (thd=0xa98059e0, rawbuf=0xa98149b8 "STOP SLAVE", length=10, parser_state=0xaffb3b94, is_com_multi=false, is_next_command=false) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/sql_parse.cc:7910
      #10 0x805c6a7f in dispatch_command (command=COM_QUERY, thd=0xa98059e0, packet=0xa980a991 "STOP SLAVE", packet_length=10, is_com_multi=false, is_next_command=false) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/sql_parse.cc:1839
      #11 0x805c50b2 in do_command (thd=0xa98059e0) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/sql_parse.cc:1357
      #12 0x80740188 in do_handle_one_connection (connect=0x830dfba8) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/sql_connect.cc:1412
      #13 0x8073feab in handle_one_connection (arg=0x830dfba8) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/sql_connect.cc:1316
      #14 0x80b7d195 in pfs_spawn_thread (arg=0x8302cd88) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/perfschema/pfs.cc:1869
      #15 0xb76ad2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #16 0xb70ed16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 23 (Thread 0xa4bb0b40 (LWP 20419)):
      #0  0xb7753c31 in __kernel_vsyscall ()
      #1  0xb76b5d32 in __lll_lock_wait () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0xb76af9e5 in pthread_mutex_lock () from /lib/i386-linux-gnu/libpthread.so.0
      #3  0x811a1674 in safe_mutex_lock (mp=0x81cc7900 <LOCK_plugin>, my_flags=0, file=0x8129b918 "/home/buildbot/buildbot/build/mariadb-10.4.16/sql/sql_plugin.cc", line=2441) at /home/buildbot/buildbot/build/mariadb-10.4.16/mysys/thr_mutex.c:293
      #4  0x805e2f37 in inline_mysql_mutex_lock (that=0x81cc7900 <LOCK_plugin>, src_file=0x8129b918 "/home/buildbot/buildbot/build/mariadb-10.4.16/sql/sql_plugin.cc", src_line=2441) at /home/buildbot/buildbot/build/mariadb-10.4.16/include/mysql/psi/mysql_thread.h:702
      #5  0x805e99b4 in plugin_foreach_with_mask (thd=0xac410290, func=0x8092022d <closecon_handlerton(THD*, plugin_ref, void*)>, type=1, state_mask=10, arg=0x0) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/sql_plugin.cc:2441
      #6  0x809202e1 in ha_close_connection (thd=0xac410290) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/handler.cc:854
      #7  0x80556545 in THD::free_connection (this=0xac410290) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/sql_class.cc:1611
      #8  0x805568b0 in THD::~THD (this=0xac410290, __in_chrg=<optimized out>) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/sql_class.cc:1685
      #9  0x80556ef7 in THD::~THD (this=0xac410290, __in_chrg=<optimized out>) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/sql_class.cc:1746
      #10 0x807c3402 in handle_rpl_parallel_thread (arg=0xa7e1e8e8) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/rpl_parallel.cc:1503
      #11 0x80b7d195 in pfs_spawn_thread (arg=0xa7e3cd08) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/perfschema/pfs.cc:1869
      #12 0xb76ad2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #13 0xb70ed16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 22 (Thread 0xa99f5b40 (LWP 18869)):
      #0  0xb7753c31 in __kernel_vsyscall ()
      #1  0xb70e2f8f in poll () from /lib/i386-linux-gnu/libc.so.6
      #2  0x81200a71 in vio_io_wait (vio=0x8302d7c8, event=VIO_IO_EVENT_READ, timeout=28800000) at /home/buildbot/buildbot/build/mariadb-10.4.16/vio/viosocket.c:980
      #3  0x811ff140 in vio_socket_io_wait (vio=0x8302d7c8, event=VIO_IO_EVENT_READ) at /home/buildbot/buildbot/build/mariadb-10.4.16/vio/viosocket.c:118
      #4  0x811ff330 in vio_read (vio=0x8302d7c8, buf=0x830f66d8 "\001", size=4) at /home/buildbot/buildbot/build/mariadb-10.4.16/vio/viosocket.c:199
      #5  0x80a93d4f in my_real_read (net=0x82fe2094, complen=0xa99f5118, header=1 '\001') at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/net_serv.cc:975
      #6  0x80a9459a in my_net_read_packet_reallen (net=0x82fe2094, read_from_server=1 '\001', reallen=0xa99f518c) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/net_serv.cc:1256
      #7  0x80a9454c in my_net_read_packet (net=0x82fe2094, read_from_server=1 '\001') at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/net_serv.cc:1240
      #8  0x805c4a13 in do_command (thd=0x82fe1ec0) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/sql_parse.cc:1229
      #9  0x80740188 in do_handle_one_connection (connect=0x82ffb480) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/sql_connect.cc:1412
      #10 0x8073feab in handle_one_connection (arg=0x82ffb480) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/sql_connect.cc:1316
      #11 0x80b7d195 in pfs_spawn_thread (arg=0x82e100b8) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/perfschema/pfs.cc:1869
      #12 0xb76ad2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #13 0xb70ed16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 21 (Thread 0xac563b40 (LWP 18868)):
      #0  0xb7753c31 in __kernel_vsyscall ()
      #1  0xb70e2f8f in poll () from /lib/i386-linux-gnu/libc.so.6
      #2  0x81200a71 in vio_io_wait (vio=0x82d789d8, event=VIO_IO_EVENT_READ, timeout=28800000) at /home/buildbot/buildbot/build/mariadb-10.4.16/vio/viosocket.c:980
      #3  0x811ff140 in vio_socket_io_wait (vio=0x82d789d8, event=VIO_IO_EVENT_READ) at /home/buildbot/buildbot/build/mariadb-10.4.16/vio/viosocket.c:118
      #4  0x811ff330 in vio_read (vio=0x82d789d8, buf=0xb220d088 "\001", size=4) at /home/buildbot/buildbot/build/mariadb-10.4.16/vio/viosocket.c:199
      #5  0x80a93d4f in my_real_read (net=0xb2208224, complen=0xac563118, header=1 '\001') at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/net_serv.cc:975
      #6  0x80a9459a in my_net_read_packet_reallen (net=0xb2208224, read_from_server=1 '\001', reallen=0xac56318c) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/net_serv.cc:1256
      #7  0x80a9454c in my_net_read_packet (net=0xb2208224, read_from_server=1 '\001') at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/net_serv.cc:1240
      #8  0x805c4a13 in do_command (thd=0xb2208050) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/sql_parse.cc:1229
      #9  0x80740188 in do_handle_one_connection (connect=0x82ffb480) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/sql_connect.cc:1412
      #10 0x8073feab in handle_one_connection (arg=0x82ffb480) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/sql_connect.cc:1316
      #11 0x80b7d195 in pfs_spawn_thread (arg=0x82ffb028) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/perfschema/pfs.cc:1869
      #12 0xb76ad2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #13 0xb70ed16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 20 (Thread 0xa73ffb40 (LWP 18770)):
      #0  0xb7753c31 in __kernel_vsyscall ()
      #1  0xb76b2a8c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80d8933e in os_event::wait (this=0x82e36e88) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0event.cc:158
      #3  0x80d88d9f in os_event::wait_low (this=0x82e36e88, reset_sig_count=733) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0event.cc:325
      #4  0x80d890e5 in os_event_wait_low (event=0x82e36e88, reset_sig_count=0) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0event.cc:502
      #5  0x80e9d13e in srv_resume_thread (slot=0x81b1c15c <srv_sys+284>, sig_count=0, wait=true, timeout_usec=0) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/srv/srv0srv.cc:910
      #6  0x80ea1803 in srv_worker_thread (arg=0x0) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/srv/srv0srv.cc:2517
      #7  0xb76ad2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #8  0xb70ed16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 19 (Thread 0xa87fdb40 (LWP 18768)):
      #0  0xb7753c31 in __kernel_vsyscall ()
      #1  0xb76b2a8c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80d8933e in os_event::wait (this=0x82e36e28) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0event.cc:158
      #3  0x80d88d9f in os_event::wait_low (this=0x82e36e28, reset_sig_count=785) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0event.cc:325
      #4  0x80d890e5 in os_event_wait_low (event=0x82e36e28, reset_sig_count=0) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0event.cc:502
      #5  0x80e9d13e in srv_resume_thread (slot=0x81b1c140 <srv_sys+256>, sig_count=0, wait=true, timeout_usec=0) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/srv/srv0srv.cc:910
      #6  0x80ea1803 in srv_worker_thread (arg=0x0) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/srv/srv0srv.cc:2517
      #7  0xb76ad2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #8  0xb70ed16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 18 (Thread 0xa49b5b40 (LWP 19748)):
      #0  0xb7753c31 in __kernel_vsyscall ()
      #1  0xb76b2e56 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x811a20cc in safe_cond_timedwait (cond=0x81cc0aa0 <COND_thread_cache>, mp=0x81cc2b40 <LOCK_thread_cache>, abstime=0xa49b516c, file=0x81259024 "/home/buildbot/buildbot/build/mariadb-10.4.16/include/mysql/psi/mysql_thread.h", line=1211) at /home/buildbot/buildbot/build/mariadb-10.4.16/mysys/thr_mutex.c:546
      #3  0x8048bc39 in inline_mysql_cond_timedwait (that=0x81cc0aa0 <COND_thread_cache>, mutex=0x81cc2b40 <LOCK_thread_cache>, abstime=0xa49b516c, src_file=0x8125b11c "/home/buildbot/buildbot/build/mariadb-10.4.16/sql/mysqld.cc", src_line=2695) at /home/buildbot/buildbot/build/mariadb-10.4.16/include/mysql/psi/mysql_thread.h:1211
      #4  0x80490986 in cache_thread (thd=0xa740ec48) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/mysqld.cc:2694
      #5  0x80490c14 in one_thread_per_connection_end (thd=0xa740ec48, put_in_cache=true) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/mysqld.cc:2780
      #6  0x807401fb in do_handle_one_connection (connect=0x830d6568) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/sql_connect.cc:1423
      #7  0x8073feab in handle_one_connection (arg=0x830d6568) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/sql_connect.cc:1316
      #8  0x80b7d195 in pfs_spawn_thread (arg=0x830d1d98) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/perfschema/pfs.cc:1869
      #9  0xb76ad2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #10 0xb70ed16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 17 (Thread 0xa49ffb40 (LWP 19700)):
      #0  0xb7753c31 in __kernel_vsyscall ()
      #1  0xb70e2f8f in poll () from /lib/i386-linux-gnu/libc.so.6
      #2  0x81200a71 in vio_io_wait (vio=0x82ffaff0, event=VIO_IO_EVENT_READ, timeout=28800000) at /home/buildbot/buildbot/build/mariadb-10.4.16/vio/viosocket.c:980
      #3  0x811ff140 in vio_socket_io_wait (vio=0x82ffaff0, event=VIO_IO_EVENT_READ) at /home/buildbot/buildbot/build/mariadb-10.4.16/vio/viosocket.c:118
      #4  0x811ff330 in vio_read (vio=0x82ffaff0, buf=0xafe0e9b0 "\a", size=4) at /home/buildbot/buildbot/build/mariadb-10.4.16/vio/viosocket.c:199
      #5  0x80a93d4f in my_real_read (net=0xafe25624, complen=0xa49ff118, header=1 '\001') at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/net_serv.cc:975
      #6  0x80a9459a in my_net_read_packet_reallen (net=0xafe25624, read_from_server=1 '\001', reallen=0xa49ff18c) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/net_serv.cc:1256
      #7  0x80a9454c in my_net_read_packet (net=0xafe25624, read_from_server=1 '\001') at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/net_serv.cc:1240
      #8  0x805c4a13 in do_command (thd=0xafe25450) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/sql_parse.cc:1229
      #9  0x80740188 in do_handle_one_connection (connect=0x82ffb158) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/sql_connect.cc:1412
      #10 0x8073feab in handle_one_connection (arg=0x82ffb158) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/sql_connect.cc:1316
      #11 0x80b7d195 in pfs_spawn_thread (arg=0x830a79b8) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/perfschema/pfs.cc:1869
      #12 0xb76ad2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #13 0xb70ed16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 16 (Thread 0xae5fbb40 (LWP 18748)):
      #0  0xb771f570 in ?? () from /lib/i386-linux-gnu/libaio.so.1
      #1  0xb771f5e6 in io_getevents () from /lib/i386-linux-gnu/libaio.so.1
      #2  0x80d78da5 in LinuxAIOHandler::collect (this=0xae5fb0f0) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0file.cc:1819
      #3  0x80d794b1 in LinuxAIOHandler::poll (this=0xae5fb0f0, m1=0xae5fb154, m2=0xae5fb158, request=0xae5fb178) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0file.cc:1980
      #4  0x80d79615 in os_aio_linux_handler (global_segment=3, m1=0xae5fb154, m2=0xae5fb158, request=0xae5fb178) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0file.cc:2034
      #5  0x80d7ebdf in os_aio_handler (segment=3, m1=0xae5fb154, m2=0xae5fb158, request=0xae5fb178) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0file.cc:5607
      #6  0x8103a041 in fil_aio_wait (segment=3) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/fil/fil0fil.cc:4316
      #7  0x80ea4562 in io_handler_thread (arg=0x82526bac <n+12>) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/srv/srv0start.cc:324
      #8  0xb76ad2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #9  0xb70ed16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 15 (Thread 0xab1f8b40 (LWP 18757)):
      #0  0xb7753c31 in __kernel_vsyscall ()
      #1  0xb76b2e56 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80d88bcc in os_event::timed_wait (this=0x82e36f48, abstime=0xab1f8118) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0event.cc:275
      #3  0x80d88edd in os_event::wait_time_low (this=0x82e36f48, time_in_usec=1000000, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0event.cc:385
      #4  0x80d890b3 in os_event_wait_time_low (event=0x82e36f48, time_in_usec=1000000, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0event.cc:485
      #5  0x80e9f72e in srv_error_monitor_thread () at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/srv/srv0srv.cc:1854
      #6  0xb76ad2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #7  0xb70ed16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 14 (Thread 0xaf5fdb40 (LWP 18746)):
      #0  0xb771f570 in ?? () from /lib/i386-linux-gnu/libaio.so.1
      #1  0xb771f5e6 in io_getevents () from /lib/i386-linux-gnu/libaio.so.1
      #2  0x80d78da5 in LinuxAIOHandler::collect (this=0xaf5fd0f0) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0file.cc:1819
      #3  0x80d794b1 in LinuxAIOHandler::poll (this=0xaf5fd0f0, m1=0xaf5fd154, m2=0xaf5fd158, request=0xaf5fd178) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0file.cc:1980
      #4  0x80d79615 in os_aio_linux_handler (global_segment=1, m1=0xaf5fd154, m2=0xaf5fd158, request=0xaf5fd178) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0file.cc:2034
      #5  0x80d7ebdf in os_aio_handler (segment=1, m1=0xaf5fd154, m2=0xaf5fd158, request=0xaf5fd178) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0file.cc:5607
      #6  0x8103a041 in fil_aio_wait (segment=1) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/fil/fil0fil.cc:4316
      #7  0x80ea4562 in io_handler_thread (arg=0x82526ba4 <n+4>) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/srv/srv0start.cc:324
      #8  0xb76ad2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #9  0xb70ed16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 13 (Thread 0xa756ab40 (LWP 20416)):
      #0  0xb7753c31 in __kernel_vsyscall ()
      #1  0xb76b2a8c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x811a1e21 in safe_cond_wait (cond=0xa7e1e7ec, mp=0xa7e1e788, file=0x812ff380 "/home/buildbot/buildbot/build/mariadb-10.4.16/include/mysql/psi/mysql_thread.h", line=1185) at /home/buildbot/buildbot/build/mariadb-10.4.16/mysys/thr_mutex.c:492
      #3  0x807bef4f in inline_mysql_cond_wait (that=0xa7e1e7ec, mutex=0xa7e1e788, src_file=0x812ff7f4 "/home/buildbot/buildbot/build/mariadb-10.4.16/sql/rpl_parallel.cc", src_line=1641) at /home/buildbot/buildbot/build/mariadb-10.4.16/include/mysql/psi/mysql_thread.h:1185
      #4  0x807c3924 in rpl_parallel_change_thread_count (pool=0x81ce1920 <global_rpl_thread_pool>, new_count=0, force=false) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/rpl_parallel.cc:1641
      #5  0x807c3dca in rpl_parallel_inactivate_pool (pool=0x81ce1920 <global_rpl_thread_pool>) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/rpl_parallel.cc:1758
      #6  0x807c3d0d in rpl_parallel_resize_pool_if_no_slaves () at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/rpl_parallel.cc:1721
      #7  0x804cff0c in handle_slave_sql (arg=0x830f0fb0) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/slave.cc:5821
      #8  0x80b7d195 in pfs_spawn_thread (arg=0xa4adf898) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/perfschema/pfs.cc:1869
      #9  0xb76ad2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #10 0xb70ed16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 12 (Thread 0xaa1f6b40 (LWP 18759)):
      #0  0xb7753c31 in __kernel_vsyscall ()
      #1  0xb76b2e56 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80d88bcc in os_event::timed_wait (this=0x82f918c8, abstime=0xaa1f6238) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0event.cc:275
      #3  0x80d88edd in os_event::wait_time_low (this=0x82f918c8, time_in_usec=10000000, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0event.cc:385
      #4  0x80d890b3 in os_event_wait_time_low (event=0x82f918c8, time_in_usec=10000000, reset_sig_count=0) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0event.cc:485
      #5  0x810214fb in dict_stats_thread () at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/dict/dict0stats_bg.cc:476
      #6  0xb76ad2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #7  0xb70ed16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 11 (Thread 0xac5adb40 (LWP 20421)):
      #0  0xb7753c31 in __kernel_vsyscall ()
      #1  0xb76b5d32 in __lll_lock_wait () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0xb76af9e5 in pthread_mutex_lock () from /lib/i386-linux-gnu/libpthread.so.0
      #3  0x811a1674 in safe_mutex_lock (mp=0x81cc7900 <LOCK_plugin>, my_flags=0, file=0x8129b918 "/home/buildbot/buildbot/build/mariadb-10.4.16/sql/sql_plugin.cc", line=2441) at /home/buildbot/buildbot/build/mariadb-10.4.16/mysys/thr_mutex.c:293
      #4  0x805e2f37 in inline_mysql_mutex_lock (that=0x81cc7900 <LOCK_plugin>, src_file=0x8129b918 "/home/buildbot/buildbot/build/mariadb-10.4.16/sql/sql_plugin.cc", src_line=2441) at /home/buildbot/buildbot/build/mariadb-10.4.16/include/mysql/psi/mysql_thread.h:702
      #5  0x805e99b4 in plugin_foreach_with_mask (thd=0xb22ad170, func=0x8092022d <closecon_handlerton(THD*, plugin_ref, void*)>, type=1, state_mask=10, arg=0x0) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/sql_plugin.cc:2441
      #6  0x809202e1 in ha_close_connection (thd=0xb22ad170) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/handler.cc:854
      #7  0x80556545 in THD::free_connection (this=0xb22ad170) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/sql_class.cc:1611
      #8  0x805568b0 in THD::~THD (this=0xb22ad170, __in_chrg=<optimized out>) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/sql_class.cc:1685
      #9  0x80556ef7 in THD::~THD (this=0xb22ad170, __in_chrg=<optimized out>) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/sql_class.cc:1746
      #10 0x807c3402 in handle_rpl_parallel_thread (arg=0xa7e1ebb0) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/rpl_parallel.cc:1503
      #11 0x80b7d195 in pfs_spawn_thread (arg=0xa7e14540) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/perfschema/pfs.cc:1869
      #12 0xb76ad2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #13 0xb70ed16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 10 (Thread 0xaedfcb40 (LWP 18747)):
      #0  0xb771f570 in ?? () from /lib/i386-linux-gnu/libaio.so.1
      #1  0xb771f5e6 in io_getevents () from /lib/i386-linux-gnu/libaio.so.1
      #2  0x80d78da5 in LinuxAIOHandler::collect (this=0xaedfc0f0) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0file.cc:1819
      #3  0x80d794b1 in LinuxAIOHandler::poll (this=0xaedfc0f0, m1=0xaedfc154, m2=0xaedfc158, request=0xaedfc178) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0file.cc:1980
      #4  0x80d79615 in os_aio_linux_handler (global_segment=2, m1=0xaedfc154, m2=0xaedfc158, request=0xaedfc178) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0file.cc:2034
      #5  0x80d7ebdf in os_aio_handler (segment=2, m1=0xaedfc154, m2=0xaedfc158, request=0xaedfc178) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0file.cc:5607
      #6  0x8103a041 in fil_aio_wait (segment=2) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/fil/fil0fil.cc:4316
      #7  0x80ea4562 in io_handler_thread (arg=0x82526ba8 <n+8>) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/srv/srv0start.cc:324
      #8  0xb76ad2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #9  0xb70ed16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 9 (Thread 0xb234cb40 (LWP 18776)):
      #0  0xb7753c31 in __kernel_vsyscall ()
      #1  0xb76b2a8c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x811a1e21 in safe_cond_wait (cond=0x81ce925c <mysql_bin_log+3324>, mp=0x81ce91f8 <mysql_bin_log+3224>, file=0x8147078c "/home/buildbot/buildbot/build/mariadb-10.4.16/include/mysql/psi/mysql_thread.h", line=1174) at /home/buildbot/buildbot/build/mariadb-10.4.16/mysys/thr_mutex.c:492
      #3  0x80a3e98f in inline_mysql_cond_wait (that=0x81ce925c <mysql_bin_log+3324>, mutex=0x81ce91f8 <mysql_bin_log+3224>, src_file=0x81471450 "/home/buildbot/buildbot/build/mariadb-10.4.16/sql/log.cc", src_line=10061) at /home/buildbot/buildbot/build/mariadb-10.4.16/include/mysql/psi/mysql_thread.h:1174
      #4  0x80a5bf63 in binlog_background_thread (arg=0x0) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/log.cc:10061
      #5  0x80b7d195 in pfs_spawn_thread (arg=0x82db19b8) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/perfschema/pfs.cc:1869
      #6  0xb76ad2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #7  0xb70ed16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 8 (Thread 0xaddfab40 (LWP 18749)):
      #0  0xb771f570 in ?? () from /lib/i386-linux-gnu/libaio.so.1
      #1  0xb771f5e6 in io_getevents () from /lib/i386-linux-gnu/libaio.so.1
      #2  0x80d78da5 in LinuxAIOHandler::collect (this=0xaddfa0f0) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0file.cc:1819
      #3  0x80d794b1 in LinuxAIOHandler::poll (this=0xaddfa0f0, m1=0xaddfa154, m2=0xaddfa158, request=0xaddfa178) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0file.cc:1980
      #4  0x80d79615 in os_aio_linux_handler (global_segment=4, m1=0xaddfa154, m2=0xaddfa158, request=0xaddfa178) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0file.cc:2034
      #5  0x80d7ebdf in os_aio_handler (segment=4, m1=0xaddfa154, m2=0xaddfa158, request=0xaddfa178) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0file.cc:5607
      #6  0x8103a041 in fil_aio_wait (segment=4) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/fil/fil0fil.cc:4316
      #7  0x80ea4562 in io_handler_thread (arg=0x82526bb0 <n+16>) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/srv/srv0start.cc:324
      #8  0xb76ad2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #9  0xb70ed16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 7 (Thread 0xafdfeb40 (LWP 18745)):
      #0  0xb771f570 in ?? () from /lib/i386-linux-gnu/libaio.so.1
      #1  0xb771f5e6 in io_getevents () from /lib/i386-linux-gnu/libaio.so.1
      #2  0x80d78da5 in LinuxAIOHandler::collect (this=0xafdfe0f0) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0file.cc:1819
      #3  0x80d794b1 in LinuxAIOHandler::poll (this=0xafdfe0f0, m1=0xafdfe154, m2=0xafdfe158, request=0xafdfe178) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0file.cc:1980
      #4  0x80d79615 in os_aio_linux_handler (global_segment=0, m1=0xafdfe154, m2=0xafdfe158, request=0xafdfe178) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0file.cc:2034
      #5  0x80d7ebdf in os_aio_handler (segment=0, m1=0xafdfe154, m2=0xafdfe158, request=0xafdfe178) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0file.cc:5607
      #6  0x8103a041 in fil_aio_wait (segment=0) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/fil/fil0fil.cc:4316
      #7  0x80ea4562 in io_handler_thread (arg=0x82526ba0 <n>) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/srv/srv0start.cc:324
      #8  0xb76ad2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #9  0xb70ed16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 6 (Thread 0xa97ffb40 (LWP 18766)):
      #0  0xb7753c31 in __kernel_vsyscall ()
      #1  0xb76b68aa in nanosleep () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80d89736 in os_thread_sleep (tm=1000000) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0thread.cc:231
      #3  0x80ea0e76 in srv_master_sleep () at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/srv/srv0srv.cc:2341
      #4  0x80ea0ff3 in srv_master_thread (arg=0x0) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/srv/srv0srv.cc:2381
      #5  0xb76ad2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #6  0xb70ed16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 5 (Thread 0xb2bd8b40 (LWP 18723)):
      #0  0xb7753c31 in __kernel_vsyscall ()
      #1  0xb76b2e56 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x811a20cc in safe_cond_timedwait (cond=0x8253b5a0 <COND_timer>, mp=0x8253b520 <LOCK_timer>, abstime=0xb2bd8250, file=0x81669984 "/home/buildbot/buildbot/build/mariadb-10.4.16/include/mysql/psi/mysql_thread.h", line=1211) at /home/buildbot/buildbot/build/mariadb-10.4.16/mysys/thr_mutex.c:546
      #3  0x811a307e in inline_mysql_cond_timedwait (that=0x8253b5a0 <COND_timer>, mutex=0x8253b520 <LOCK_timer>, abstime=0xb2bd8250, src_file=0x816699d4 "/home/buildbot/buildbot/build/mariadb-10.4.16/mysys/thr_timer.c", src_line=292) at /home/buildbot/buildbot/build/mariadb-10.4.16/include/mysql/psi/mysql_thread.h:1211
      #4  0x811a3c5d in timer_handler (arg=0x0) at /home/buildbot/buildbot/build/mariadb-10.4.16/mysys/thr_timer.c:292
      #5  0x80b7d195 in pfs_spawn_thread (arg=0x82d7bb08) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/perfschema/pfs.cc:1869
      #6  0xb76ad2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #7  0xb70ed16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 4 (Thread 0xad5f9b40 (LWP 18750)):
      #0  0xb771f570 in ?? () from /lib/i386-linux-gnu/libaio.so.1
      #1  0xb771f5e6 in io_getevents () from /lib/i386-linux-gnu/libaio.so.1
      #2  0x80d78da5 in LinuxAIOHandler::collect (this=0xad5f90f0) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0file.cc:1819
      #3  0x80d794b1 in LinuxAIOHandler::poll (this=0xad5f90f0, m1=0xad5f9154, m2=0xad5f9158, request=0xad5f9178) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0file.cc:1980
      #4  0x80d79615 in os_aio_linux_handler (global_segment=5, m1=0xad5f9154, m2=0xad5f9158, request=0xad5f9178) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0file.cc:2034
      #5  0x80d7ebdf in os_aio_handler (segment=5, m1=0xad5f9154, m2=0xad5f9158, request=0xad5f9178) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0file.cc:5607
      #6  0x8103a041 in fil_aio_wait (segment=5) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/fil/fil0fil.cc:4316
      #7  0x80ea4562 in io_handler_thread (arg=0x82526bb4 <n+20>) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/srv/srv0start.cc:324
      #8  0xb76ad2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #9  0xb70ed16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 3 (Thread 0xacdf8b40 (LWP 18751)):
      #0  0xb7753c31 in __kernel_vsyscall ()
      #1  0xb76b2e56 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80d88bcc in os_event::timed_wait (this=0x82e37068, abstime=0xacdf8078) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0event.cc:275
      #3  0x80d88edd in os_event::wait_time_low (this=0x82e37068, time_in_usec=883000, reset_sig_count=13) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0event.cc:385
      #4  0x80d890b3 in os_event_wait_time_low (event=0x82e37068, time_in_usec=883000, reset_sig_count=13) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/os/os0event.cc:485
      #5  0x80fb4f21 in pc_sleep_if_needed (next_loop_time=1948282, sig_count=13, cur_time=1947399) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/buf/buf0flu.cc:2628
      #6  0x80fb6139 in buf_flush_page_cleaner_coordinator () at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/innobase/buf/buf0flu.cc:3087
      #7  0xb76ad2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #8  0xb70ed16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 2 (Thread 0xb1761b40 (LWP 18724)):
      #0  0xb7753c31 in __kernel_vsyscall ()
      #1  0xb76b2e56 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x811a20cc in safe_cond_timedwait (cond=0x824f2ba0 <COND_checkpoint>, mp=0x824f2b20 <LOCK_checkpoint>, abstime=0xb176119c, file=0x814d5d98 "/home/buildbot/buildbot/build/mariadb-10.4.16/include/mysql/psi/mysql_thread.h", line=1211) at /home/buildbot/buildbot/build/mariadb-10.4.16/mysys/thr_mutex.c:546
      #3  0x80be62e9 in inline_mysql_cond_timedwait (that=0x824f2ba0 <COND_checkpoint>, mutex=0x824f2b20 <LOCK_checkpoint>, abstime=0xb176119c, src_file=0x814d5de8 "/home/buildbot/buildbot/build/mariadb-10.4.16/storage/maria/ma_servicethread.c", src_line=116) at /home/buildbot/buildbot/build/mariadb-10.4.16/include/mysql/psi/mysql_thread.h:1211
      #4  0x80be684e in my_service_thread_sleep (control=0x81b134d8 <checkpoint_control>, sleep_time=29000000000) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/maria/ma_servicethread.c:115
      #5  0x80bd9fdc in ma_checkpoint_background (arg=0x1e) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/maria/ma_checkpoint.c:707
      #6  0x80b7d195 in pfs_spawn_thread (arg=0x82e05028) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/perfschema/pfs.cc:1869
      #7  0xb76ad2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #8  0xb70ed16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 1 (Thread 0xa7fb2b40 (LWP 20418)):
      #0  0xb7753c31 in __kernel_vsyscall ()
      #1  0xb7031e89 in raise () from /lib/i386-linux-gnu/libc.so.6
      #2  0xb70333e7 in abort () from /lib/i386-linux-gnu/libc.so.6
      #3  0x811a22e3 in safe_mutex_destroy (mp=0xafe774b4, file=0x8128446c "/home/buildbot/buildbot/build/mariadb-10.4.16/sql/sql_class.cc", line=1698) at /home/buildbot/buildbot/build/mariadb-10.4.16/mysys/thr_mutex.c:600
      #4  0x80550f9f in inline_mysql_mutex_destroy (that=0xafe774b4, src_file=0x8128446c "/home/buildbot/buildbot/build/mariadb-10.4.16/sql/sql_class.cc", src_line=1698) at /home/buildbot/buildbot/build/mariadb-10.4.16/include/mysql/psi/mysql_thread.h:676
      #5  0x80556962 in THD::~THD (this=0xafe739c8, __in_chrg=<optimized out>) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/sql_class.cc:1698
      #6  0x80556ef7 in THD::~THD (this=0xafe739c8, __in_chrg=<optimized out>) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/sql_class.cc:1746
      #7  0x807c3402 in handle_rpl_parallel_thread (arg=0xa7e1e784) at /home/buildbot/buildbot/build/mariadb-10.4.16/sql/rpl_parallel.cc:1503
      #8  0x80b7d195 in pfs_spawn_thread (arg=0xa7e07070) at /home/buildbot/buildbot/build/mariadb-10.4.16/storage/perfschema/pfs.cc:1869
      #9  0xb76ad2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #10 0xb70ed16e in clone () from /lib/i386-linux-gnu/libc.so.6
      

      https://buildbot.askmonty.org/buildbot/builders/kvm-fulltest2/builds/24767/steps/mtr_ps/logs/stdio

      rpl.rpl_parallel_stop_on_con_kill 'innodb,mix' w3 [ fail ]
              Test ended at 2020-09-24 07:13:19
       
      CURRENT_TEST: rpl.rpl_parallel_stop_on_con_kill
      mysqltest: In included file "./include/stop_slave.inc": 
      included from /mnt/buildbot/build/mariadb-10.6.0/mysql-test/suite/rpl/include/rpl_parallel_stop_on_con_kill.inc at line 70:
      included from /mnt/buildbot/build/mariadb-10.6.0/mysql-test/suite/rpl/t/rpl_parallel_stop_on_con_kill.test at line 2:
      At line 82: query 'STOP SLAVE' failed: 2013: Lost connection to MySQL server during query
       
      The result from queries just before the failure was:
      < snip >
      SET SESSION debug_dbug=@old_dbug;
      SELECT * FROM t3 WHERE a>=200 ORDER BY a;
      a	b
      201	3
      202	4
      203	4
      204	4
      205	3
      include/save_master_gtid.inc
      connection server_2;
      include/start_slave.inc
      include/sync_with_master_gtid.inc
      SELECT * FROM t3 WHERE a>=200 ORDER BY a;
      a	b
      201	3
      202	4
      203	4
      204	4
      205	3
      include/stop_slave.inc
      

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            Assignee:
            Elkin Andrei Elkin
            Reporter:
            alice Alice Sherepa
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              Created:
              Updated: