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  1. MariaDB Server
  2. MDEV-24809

spider/bg.spider3_fixes_part failed in buildbot with timeout

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      Description

      http://buildbot.askmonty.org/buildbot/builders/kvm-fulltest2/builds/26862

      bb-10.2-release e7d9c1d498

      spider/bg.spider3_fixes_part             w2 [ fail ]  timeout after 7200 seconds
              Test ended at 2021-02-05 19:18:33
       
      Test case timeout after 7200 seconds
       
      == /mnt/buildbot/build/mariadb-10.2.37/mysql-test/var/2/log/spider3_fixes_part.log == 
      SELECT LAST_INSERT_ID();
      LAST_INSERT_ID()
      1554
      SELECT MAX(id) FROM t2;
      MAX(id)
      1554
      MASTER_1_AUTO_INCREMENT_OFFSET3
      INSERT INTO t1 (id) VALUES (null);
      SELECT LAST_INSERT_ID();
      LAST_INSERT_ID()
      778
      SELECT MAX(id) FROM t1;
      MAX(id)
      1554
      MASTER_1_AUTO_INCREMENT_OFFSET4
      INSERT INTO t2 (id) VALUES (null);
      SELECT LAST_INSERT_ID();
      LAST_INSERT_ID()
      2331
      SELECT MAX(id) FROM t2;
       
       == /mnt/buildbot/build/mariadb-10.2.37/mysql-test/var/2/tmp/analyze-timeout-mysqld.3.1.err ==
      mysqltest: Could not open connection 'default' after 500 attempts: 2002 Can't connect to local MySQL server through socket '/mnt/buildbot/build/mariadb-10.2.37/mysql-test/var/tmp/2/mysqld.' (111)
       
       == /mnt/buildbot/build/mariadb-10.2.37/mysql-test/var/2/tmp/analyze-timeout-mysqld.4.1.err ==
      mysqltest: Could not open connection 'default' after 500 attempts: 2002 Can't connect to local MySQL server through socket '/mnt/buildbot/build/mariadb-10.2.37/mysql-test/var/tmp/2/mysqld.' (111)
       
       == /mnt/buildbot/build/mariadb-10.2.37/mysql-test/var/2/tmp/analyze-timeout-mysqld.2.2.err ==
      mysqltest: Could not open connection 'default' after 500 attempts: 2002 Can't connect to local MySQL server through socket '/mnt/buildbot/build/mariadb-10.2.37/mysql-test/var/tmp/2/mysqld.' (111)
       
       == /mnt/buildbot/build/mariadb-10.2.37/mysql-test/var/2/tmp/analyze-timeout-mysqld.2.3.err ==
      mysqltest: Could not open connection 'default' after 500 attempts: 2002 Can't connect to local MySQL server through socket '/mnt/buildbot/build/mariadb-10.2.37/mysql-test/var/tmp/2/mysqld.' (111)
       
       == /mnt/buildbot/build/mariadb-10.2.37/mysql-test/var/2/tmp/analyze-timeout-mysqld.3.3.err ==
      mysqltest: Could not open connection 'default' after 500 attempts: 2002 Can't connect to local MySQL server through socket '/mnt/buildbot/build/mariadb-10.2.37/mysql-test/var/tmp/2/mysqld.' (111)
       
       == /mnt/buildbot/build/mariadb-10.2.37/mysql-test/var/2/tmp/analyze-timeout-mysqld.1.1.err ==
      mysqltest: Could not open connection 'default' after 500 attempts: 2002 Can't connect to local MySQL server through socket '/mnt/buildbot/build/mariadb-10.2.37/mysql-test/var/tmp/2/mysqld.' (111)
       
       == /mnt/buildbot/build/mariadb-10.2.37/mysql-test/var/2/tmp/analyze-timeout-mysqld.2.1.err ==
      mysqltest: Could not open connection 'default' after 500 attempts: 2002 Can't connect to local MySQL server through socket '/mnt/buildbot/build/mariadb-10.2.37/mysql-test/var/tmp/2/mysqld.' (111)
       
       == /mnt/buildbot/build/mariadb-10.2.37/mysql-test/var/2/tmp/analyze-timeout-mysqld.3.2.err ==
      mysqltest: Could not open connection 'default' after 500 attempts: 2002 Can't connect to local MySQL server through socket '/mnt/buildbot/build/mariadb-10.2.37/mysql-test/var/tmp/2/mysqld.' (111)
       
       
       - found 'core' (0/0)
       
      Trying 'dbx' to get a backtrace
       
      Trying 'gdb' to get a backtrace from coredump /mnt/buildbot/build/mariadb-10.2.37/mysql-test/var/2/log/spider/bg.spider3_fixes_part/mysqld.4.1/data/core
      Core generated by '/mnt/buildbot/build/mariadb-10.2.37/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 1294]
      [New LWP 1694]
      [New LWP 1689]
      [New LWP 1688]
      [New LWP 1692]
      [New LWP 1573]
      [New LWP 1693]
      [New LWP 1650]
      [New LWP 1489]
      [New LWP 1691]
      [New LWP 1764]
      [New LWP 1649]
      [New LWP 1690]
      [New LWP 1714]
      [New LWP 1569]
      [New LWP 1651]
      [New LWP 1723]
      [New LWP 1457]
      [New LWP 1571]
      [New LWP 1570]
      [New LWP 1779]
      [New LWP 1568]
      [New LWP 1721]
      [New LWP 1778]
      [New LWP 1567]
      [New LWP 1719]
      [New LWP 1717]
      [New LWP 1572]
      [New LWP 1716]
      [New LWP 1715]
      [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-10.2.37/sql/mysqld --defaults-group-suffix=.4.1 --d'.
      Program terminated with signal SIGABRT, Aborted.
      #0  0xb77d1c31 in __kernel_vsyscall ()
      [Current thread is 1 (Thread 0xb6ef17c0 (LWP 1294))]
      #0  0xb77d1c31 in __kernel_vsyscall ()
      #1  0xb7430ce1 in pthread_kill () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80ded81f in my_write_core (sig=6) at /home/buildbot/buildbot/build/mariadb-10.2.37/mysys/stacktrace.c:382
      #3  0x806e277c in handle_fatal_signal (sig=6) at /home/buildbot/buildbot/build/mariadb-10.2.37/sql/signal_handler.cc:343
      #4  <signal handler called>
      #5  0xb77d1c31 in __kernel_vsyscall ()
      #6  0xb7160f8f in poll () from /lib/i386-linux-gnu/libc.so.6
      #7  0x80399319 in handle_connections_sockets () at /home/buildbot/buildbot/build/mariadb-10.2.37/sql/mysqld.cc:6724
      #8  0x80398626 in mysqld_main (argc=133, argv=0x82fc3058) at /home/buildbot/buildbot/build/mariadb-10.2.37/sql/mysqld.cc:6192
      #9  0x8038c97b in main (argc=11, argv=0xbff16f74) at /home/buildbot/buildbot/build/mariadb-10.2.37/sql/main.cc:25
       
      Thread 30 (Thread 0xaa5fcb40 (LWP 1715)):
      #0  0xb77d1c31 in __kernel_vsyscall ()
      #1  0xb74338aa in nanosleep () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80a923c8 in os_thread_sleep (tm=1000000) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0thread.cc:231
      #3  0x80c2230d in btr_defragment_thread () at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/btr/btr0defragment.cc:710
      #4  0xb742a2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #5  0xb716b16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 29 (Thread 0xa9dfbb40 (LWP 1716)):
      #0  0xb77d1c31 in __kernel_vsyscall ()
      #1  0xb742fa8c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80a92042 in os_event::wait (this=0x830c3ec0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:158
      #3  0x80a91a7b in os_event::wait_low (this=0x830c3ec0, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:325
      #4  0x80a91de9 in os_event_wait_low (event=0x830c3ec0, reset_sig_count=0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:507
      #5  0x80c2ff5b in buf_resize_thread () at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/buf/buf0buf.cc:3109
      #6  0xb742a2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #7  0xb716b16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 28 (Thread 0xb17bfb40 (LWP 1572)):
      #0  0xb779d570 in ?? () from /lib/i386-linux-gnu/libaio.so.1
      #1  0xb779d5e6 in io_getevents () from /lib/i386-linux-gnu/libaio.so.1
      #2  0x80a83ea3 in LinuxAIOHandler::collect (this=0xb17bf0f0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0file.cc:1936
      #3  0x80a844b5 in LinuxAIOHandler::poll (this=0xb17bf0f0, m1=0xb17bf154, m2=0xb17bf158, request=0xb17bf178) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0file.cc:2097
      #4  0x80a84619 in os_aio_linux_handler (global_segment=5, m1=0xb17bf154, m2=0xb17bf158, request=0xb17bf178) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0file.cc:2151
      #5  0x80a89661 in os_aio_handler (segment=5, m1=0xb17bf154, m2=0xb17bf158, request=0xb17bf178) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0file.cc:5784
      #6  0x80cbd0fc in fil_aio_wait (segment=5) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/fil/fil0fil.cc:5115
      #7  0x80b73ab8 in io_handler_thread (arg=0x81f99b74 <n+20>) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/srv/srv0start.cc:332
      #8  0xb742a2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #9  0xb716b16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 27 (Thread 0xa95fab40 (LWP 1717)):
      #0  0xb77d1c31 in __kernel_vsyscall ()
      #1  0xb742fa8c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80df23a6 in safe_cond_wait (cond=0xa95fa204, mp=0xa95fa238, file=0x80ffdee0 "/home/buildbot/buildbot/build/mariadb-10.2.37/include/mysql/psi/mysql_thread.h", line=1156) at /home/buildbot/buildbot/build/mariadb-10.2.37/mysys/thr_mutex.c:491
      #3  0x809c7495 in inline_mysql_cond_wait (that=0xa95fa204, mutex=0xa95fa238, src_file=0x80fffb68 "/home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/handler/ha_innodb.cc", src_line=348) at /home/buildbot/buildbot/build/mariadb-10.2.37/include/mysql/psi/mysql_thread.h:1156
      #4  0x809cb6cc in thd_destructor_proxy () at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/handler/ha_innodb.cc:348
      #5  0xb742a2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #6  0xb716b16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 26 (Thread 0xb51c6b40 (LWP 1719)):
      #0  0xb77d1c31 in __kernel_vsyscall ()
      #1  0xb742fa8c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80df23a6 in safe_cond_wait (cond=0x8175cbb8 <mysql_bin_log+3256>, mp=0x8175cb54 <mysql_bin_log+3156>, file=0x80fa0720 "/home/buildbot/buildbot/build/mariadb-10.2.37/include/mysql/psi/mysql_thread.h", line=1156) at /home/buildbot/buildbot/build/mariadb-10.2.37/mysys/thr_mutex.c:491
      #3  0x807d675d in inline_mysql_cond_wait (that=0x8175cbb8 <mysql_bin_log+3256>, mutex=0x8175cb54 <mysql_bin_log+3156>, src_file=0x80fa0e18 "/home/buildbot/buildbot/build/mariadb-10.2.37/sql/log.cc", src_line=9909) at /home/buildbot/buildbot/build/mariadb-10.2.37/include/mysql/psi/mysql_thread.h:1156
      #4  0x807ef685 in binlog_background_thread (arg=0x0) at /home/buildbot/buildbot/build/mariadb-10.2.37/sql/log.cc:9909
      #5  0xb742a2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #6  0xb716b16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 25 (Thread 0xb3fc4b40 (LWP 1567)):
      #0  0xb779d570 in ?? () from /lib/i386-linux-gnu/libaio.so.1
      #1  0xb779d5e6 in io_getevents () from /lib/i386-linux-gnu/libaio.so.1
      #2  0x80a83ea3 in LinuxAIOHandler::collect (this=0xb3fc40f0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0file.cc:1936
      #3  0x80a844b5 in LinuxAIOHandler::poll (this=0xb3fc40f0, m1=0xb3fc4154, m2=0xb3fc4158, request=0xb3fc4178) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0file.cc:2097
      #4  0x80a84619 in os_aio_linux_handler (global_segment=0, m1=0xb3fc4154, m2=0xb3fc4158, request=0xb3fc4178) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0file.cc:2151
      #5  0x80a89661 in os_aio_handler (segment=0, m1=0xb3fc4154, m2=0xb3fc4158, request=0xb3fc4178) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0file.cc:5784
      #6  0x80cbd0fc in fil_aio_wait (segment=0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/fil/fil0fil.cc:5115
      #7  0x80b73ab8 in io_handler_thread (arg=0x81f99b60 <n>) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/srv/srv0start.cc:332
      #8  0xb742a2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #9  0xb716b16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 24 (Thread 0xb07bdb40 (LWP 1778)):
      #0  0xb77d1c31 in __kernel_vsyscall ()
      #1  0xb742fe56 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80df2651 in safe_cond_timedwait (cond=0x833442c8, mp=0x83344164, abstime=0xb07bce68, file=0x80e82ee0 "/home/buildbot/buildbot/build/mariadb-10.2.37/include/mysql/psi/mysql_thread.h", line=1193) at /home/buildbot/buildbot/build/mariadb-10.2.37/mysys/thr_mutex.c:545
      #3  0x803bb70e in inline_mysql_cond_timedwait (that=0x833442c8, mutex=0x83344164, abstime=0xb07bce68, src_file=0x80e83888 "/home/buildbot/buildbot/build/mariadb-10.2.37/sql/slave.cc", src_line=3156) at /home/buildbot/buildbot/build/mariadb-10.2.37/include/mysql/psi/mysql_thread.h:1193
      #4  0x803d003c in slave_sleep<bool (*)(Master_info*), Master_info*> (thd=0xabe05e28, seconds=60, func=0x803bdd83 <io_slave_killed(Master_info*)>, info=0x83342898) at /home/buildbot/buildbot/build/mariadb-10.2.37/sql/slave.cc:3156
      #5  0x803ce72a in connect_to_master (thd=0xabe05e28, mysql=0xabe10050, mi=0x83342898, reconnect=true, suppress_warnings=false) at /home/buildbot/buildbot/build/mariadb-10.2.37/sql/slave.cc:6719
      #6  0x803ce90e in safe_reconnect (thd=0xabe05e28, mysql=0xabe10050, mi=0x83342898, suppress_warnings=true) at /home/buildbot/buildbot/build/mariadb-10.2.37/sql/slave.cc:6761
      #7  0x803c70a4 in try_to_reconnect (thd=0xabe05e28, mysql=0xabe10050, mi=0x83342898, retry_count=0xb07bd190, suppress_warnings=false, messages=0x81572810 <reconnect_messages+48>) at /home/buildbot/buildbot/build/mariadb-10.2.37/sql/slave.cc:4140
      #8  0x803c7ec7 in handle_slave_io (arg=0x83342898) at /home/buildbot/buildbot/build/mariadb-10.2.37/sql/slave.cc:4413
      #9  0xb742a2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #10 0xb716b16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 23 (Thread 0xb517cb40 (LWP 1721)):
      #0  0xb77d1c31 in __kernel_vsyscall ()
      #1  0xb74341cd in do_sigwait () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0xb743425e in sigwait () from /lib/i386-linux-gnu/libpthread.so.0
      #3  0x80392d61 in signal_hand (arg=0x0) at /home/buildbot/buildbot/build/mariadb-10.2.37/sql/mysqld.cc:3557
      #4  0xb742a2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #5  0xb716b16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 22 (Thread 0xb37c3b40 (LWP 1568)):
      #0  0xb779d570 in ?? () from /lib/i386-linux-gnu/libaio.so.1
      #1  0xb779d5e6 in io_getevents () from /lib/i386-linux-gnu/libaio.so.1
      #2  0x80a83ea3 in LinuxAIOHandler::collect (this=0xb37c30f0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0file.cc:1936
      #3  0x80a844b5 in LinuxAIOHandler::poll (this=0xb37c30f0, m1=0xb37c3154, m2=0xb37c3158, request=0xb37c3178) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0file.cc:2097
      #4  0x80a84619 in os_aio_linux_handler (global_segment=1, m1=0xb37c3154, m2=0xb37c3158, request=0xb37c3178) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0file.cc:2151
      #5  0x80a89661 in os_aio_handler (segment=1, m1=0xb37c3154, m2=0xb37c3158, request=0xb37c3178) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0file.cc:5784
      #6  0x80cbd0fc in fil_aio_wait (segment=1) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/fil/fil0fil.cc:5115
      #7  0x80b73ab8 in io_handler_thread (arg=0x81f99b64 <n+4>) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/srv/srv0start.cc:332
      #8  0xb742a2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #9  0xb716b16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 21 (Thread 0xb0773b40 (LWP 1779)):
      #0  0xb77d1c31 in __kernel_vsyscall ()
      #1  0xb742fa8c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80df23a6 in safe_cond_wait (cond=0x83344d28, mp=0x83344788, file=0x80fa0720 "/home/buildbot/buildbot/build/mariadb-10.2.37/include/mysql/psi/mysql_thread.h", line=1156) at /home/buildbot/buildbot/build/mariadb-10.2.37/mysys/thr_mutex.c:491
      #3  0x807d675d in inline_mysql_cond_wait (that=0x83344d28, mutex=0x83344788, src_file=0x80fa0e18 "/home/buildbot/buildbot/build/mariadb-10.2.37/sql/log.cc", src_line=8325) at /home/buildbot/buildbot/build/mariadb-10.2.37/include/mysql/psi/mysql_thread.h:1156
      #4  0x807eb85a in MYSQL_BIN_LOG::wait_for_update_relay_log (this=0x83344784, thd=0xad201030) at /home/buildbot/buildbot/build/mariadb-10.2.37/sql/log.cc:8325
      #5  0x803cf2bd in next_event (rgi=0xad2007a0, event_size=0xb0772d20) at /home/buildbot/buildbot/build/mariadb-10.2.37/sql/slave.cc:7143
      #6  0x803c62e0 in exec_relay_log_event (thd=0xad201030, rli=0x83344308, serial_rgi=0xad2007a0) at /home/buildbot/buildbot/build/mariadb-10.2.37/sql/slave.cc:3782
      #7  0x803c9f94 in handle_slave_sql (arg=0x83342898) at /home/buildbot/buildbot/build/mariadb-10.2.37/sql/slave.cc:5084
      #8  0xb742a2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #9  0xb716b16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 20 (Thread 0xb27c1b40 (LWP 1570)):
      #0  0xb779d570 in ?? () from /lib/i386-linux-gnu/libaio.so.1
      #1  0xb779d5e6 in io_getevents () from /lib/i386-linux-gnu/libaio.so.1
      #2  0x80a83ea3 in LinuxAIOHandler::collect (this=0xb27c10f0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0file.cc:1936
      #3  0x80a844b5 in LinuxAIOHandler::poll (this=0xb27c10f0, m1=0xb27c1154, m2=0xb27c1158, request=0xb27c1178) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0file.cc:2097
      #4  0x80a84619 in os_aio_linux_handler (global_segment=3, m1=0xb27c1154, m2=0xb27c1158, request=0xb27c1178) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0file.cc:2151
      #5  0x80a89661 in os_aio_handler (segment=3, m1=0xb27c1154, m2=0xb27c1158, request=0xb27c1178) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0file.cc:5784
      #6  0x80cbd0fc in fil_aio_wait (segment=3) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/fil/fil0fil.cc:5115
      #7  0x80b73ab8 in io_handler_thread (arg=0x81f99b6c <n+12>) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/srv/srv0start.cc:332
      #8  0xb742a2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #9  0xb716b16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 19 (Thread 0xb1fc0b40 (LWP 1571)):
      #0  0xb779d570 in ?? () from /lib/i386-linux-gnu/libaio.so.1
      #1  0xb779d5e6 in io_getevents () from /lib/i386-linux-gnu/libaio.so.1
      #2  0x80a83ea3 in LinuxAIOHandler::collect (this=0xb1fc00f0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0file.cc:1936
      #3  0x80a844b5 in LinuxAIOHandler::poll (this=0xb1fc00f0, m1=0xb1fc0154, m2=0xb1fc0158, request=0xb1fc0178) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0file.cc:2097
      #4  0x80a84619 in os_aio_linux_handler (global_segment=4, m1=0xb1fc0154, m2=0xb1fc0158, request=0xb1fc0178) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0file.cc:2151
      #5  0x80a89661 in os_aio_handler (segment=4, m1=0xb1fc0154, m2=0xb1fc0158, request=0xb1fc0178) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0file.cc:5784
      #6  0x80cbd0fc in fil_aio_wait (segment=4) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/fil/fil0fil.cc:5115
      #7  0x80b73ab8 in io_handler_thread (arg=0x81f99b70 <n+16>) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/srv/srv0start.cc:332
      #8  0xb742a2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #9  0xb716b16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 18 (Thread 0xb6df1b40 (LWP 1457)):
      #0  0xb77d1c31 in __kernel_vsyscall ()
      #1  0xb742fe56 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80df2651 in safe_cond_timedwait (cond=0x81fadf60 <COND_timer>, mp=0x81fadee0 <LOCK_timer>, abstime=0xb6df1290, file=0x81176058 "/home/buildbot/buildbot/build/mariadb-10.2.37/include/mysql/psi/mysql_thread.h", line=1193) at /home/buildbot/buildbot/build/mariadb-10.2.37/mysys/thr_mutex.c:545
      #3  0x80df355a in inline_mysql_cond_timedwait (that=0x81fadf60 <COND_timer>, mutex=0x81fadee0 <LOCK_timer>, abstime=0xb6df1290, src_file=0x811760a8 "/home/buildbot/buildbot/build/mariadb-10.2.37/mysys/thr_timer.c", src_line=292) at /home/buildbot/buildbot/build/mariadb-10.2.37/include/mysql/psi/mysql_thread.h:1193
      #4  0x80df4032 in timer_handler (arg=0x0) at /home/buildbot/buildbot/build/mariadb-10.2.37/mysys/thr_timer.c:292
      #5  0xb742a2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #6  0xb716b16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 17 (Thread 0xb41c5b40 (LWP 1723)):
      #0  0xb77d1c31 in __kernel_vsyscall ()
      #1  0xb742fa8c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80df23a6 in safe_cond_wait (cond=0x81740760 <COND_manager>, mp=0x817406e0 <LOCK_manager>, file=0x80ea1ee0 "/home/buildbot/buildbot/build/mariadb-10.2.37/include/mysql/psi/mysql_thread.h", line=1156) at /home/buildbot/buildbot/build/mariadb-10.2.37/mysys/thr_mutex.c:491
      #3  0x804760a0 in inline_mysql_cond_wait (that=0x81740760 <COND_manager>, mutex=0x817406e0 <LOCK_manager>, src_file=0x80ea1fdc "/home/buildbot/buildbot/build/mariadb-10.2.37/sql/sql_manager.cc", src_line=102) at /home/buildbot/buildbot/build/mariadb-10.2.37/include/mysql/psi/mysql_thread.h:1156
      #4  0x804764d1 in handle_manager (arg=0x0) at /home/buildbot/buildbot/build/mariadb-10.2.37/sql/sql_manager.cc:102
      #5  0xb742a2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #6  0xb716b16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 16 (Thread 0xaebf7b40 (LWP 1651)):
      #0  0xb77d1c31 in __kernel_vsyscall ()
      #1  0xb742fe56 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80a918a8 in os_event::timed_wait (this=0x830c3da0, abstime=0xaebf7208) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:275
      #3  0x80a91bb9 in os_event::wait_time_low (this=0x830c3da0, time_in_usec=5000000, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:385
      #4  0x80a91db7 in os_event_wait_time_low (event=0x830c3da0, time_in_usec=5000000, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:490
      #5  0x80b6eb71 in srv_monitor_thread () at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/srv/srv0srv.cc:1748
      #6  0xb742a2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #7  0xb716b16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 15 (Thread 0xb2fc2b40 (LWP 1569)):
      #0  0xb779d570 in ?? () from /lib/i386-linux-gnu/libaio.so.1
      #1  0xb779d5e6 in io_getevents () from /lib/i386-linux-gnu/libaio.so.1
      #2  0x80a83ea3 in LinuxAIOHandler::collect (this=0xb2fc20f0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0file.cc:1936
      #3  0x80a844b5 in LinuxAIOHandler::poll (this=0xb2fc20f0, m1=0xb2fc2154, m2=0xb2fc2158, request=0xb2fc2178) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0file.cc:2097
      #4  0x80a84619 in os_aio_linux_handler (global_segment=2, m1=0xb2fc2154, m2=0xb2fc2158, request=0xb2fc2178) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0file.cc:2151
      #5  0x80a89661 in os_aio_handler (segment=2, m1=0xb2fc2154, m2=0xb2fc2158, request=0xb2fc2178) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0file.cc:5784
      #6  0x80cbd0fc in fil_aio_wait (segment=2) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/fil/fil0fil.cc:5115
      #7  0x80b73ab8 in io_handler_thread (arg=0x81f99b68 <n+8>) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/srv/srv0start.cc:332
      #8  0xb742a2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #9  0xb716b16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 14 (Thread 0xaadfdb40 (LWP 1714)):
      #0  0xb77d1c31 in __kernel_vsyscall ()
      #1  0xb742fa8c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80a92042 in os_event::wait (this=0x830c3e00) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:158
      #3  0x80a91a7b in os_event::wait_low (this=0x830c3e00, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:325
      #4  0x80a91de9 in os_event_wait_low (event=0x830c3e00, reset_sig_count=0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:507
      #5  0x80c459c6 in buf_dump_thread () at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/buf/buf0dump.cc:806
      #6  0xb742a2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #7  0xb716b16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 13 (Thread 0xadbf5b40 (LWP 1690)):
      #0  0xb77d1c31 in __kernel_vsyscall ()
      #1  0xb742fe56 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80a918a8 in os_event::timed_wait (this=0x83285910, abstime=0xadbf50f8) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:275
      #3  0x80a91bb9 in os_event::wait_time_low (this=0x83285910, time_in_usec=5000000, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:385
      #4  0x80a91db7 in os_event_wait_time_low (event=0x83285910, time_in_usec=5000000, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:490
      #5  0x80bd5e81 in ib_wqueue_timedwait (wq=0x83285828, wait_in_usecs=5000000) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/ut/ut0wqueue.cc:156
      #6  0x80cfc3c2 in fts_optimize_thread (arg=0x83285828) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/fts/fts0opt.cc:2829
      #7  0xb742a2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #8  0xb716b16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 12 (Thread 0xafbf9b40 (LWP 1649)):
      #0  0xb77d1c31 in __kernel_vsyscall ()
      #1  0xb742fe56 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80a918a8 in os_event::timed_wait (this=0x8321deb8, abstime=0xafbf9218) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:275
      #3  0x80a91bb9 in os_event::wait_time_low (this=0x8321deb8, time_in_usec=1000000, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:385
      #4  0x80a91db7 in os_event_wait_time_low (event=0x8321deb8, time_in_usec=1000000, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:490
      #5  0x80a5c409 in lock_wait_timeout_thread () at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/lock/lock0wait.cc:525
      #6  0xb742a2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #7  0xb716b16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 11 (Thread 0xb417bb40 (LWP 1764)):
      #0  0xb77d1c31 in __kernel_vsyscall ()
      #1  0xb742fe56 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80df2651 in safe_cond_timedwait (cond=0x8173b000 <COND_thread_cache>, mp=0x8173cf00 <LOCK_thread_cache>, abstime=0xb417b1bc, file=0x80e750c0 "/home/buildbot/buildbot/build/mariadb-10.2.37/include/mysql/psi/mysql_thread.h", line=1193) at /home/buildbot/buildbot/build/mariadb-10.2.37/mysys/thr_mutex.c:545
      #3  0x8038d19c in inline_mysql_cond_timedwait (that=0x8173b000 <COND_thread_cache>, mutex=0x8173cf00 <LOCK_thread_cache>, abstime=0xb417b1bc, src_file=0x80e76ecc "/home/buildbot/buildbot/build/mariadb-10.2.37/sql/mysqld.cc", src_line=3021) at /home/buildbot/buildbot/build/mariadb-10.2.37/include/mysql/psi/mysql_thread.h:1193
      #4  0x80391f74 in cache_thread (thd=0xac016e28) at /home/buildbot/buildbot/build/mariadb-10.2.37/sql/mysqld.cc:3020
      #5  0x803921ff in one_thread_per_connection_end (thd=0xac016e28, put_in_cache=true) at /home/buildbot/buildbot/build/mariadb-10.2.37/sql/mysqld.cc:3109
      #6  0x805be3cb in do_handle_one_connection (connect=0x832e2a98) at /home/buildbot/buildbot/build/mariadb-10.2.37/sql/sql_connect.cc:1355
      #7  0x805be03e in handle_one_connection (arg=0x832e2a98) at /home/buildbot/buildbot/build/mariadb-10.2.37/sql/sql_connect.cc:1241
      #8  0xb742a2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #9  0xb716b16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 10 (Thread 0xad1ffb40 (LWP 1691)):
      #0  0xb77d1c31 in __kernel_vsyscall ()
      #1  0xb742fa8c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80a92042 in os_event::wait (this=0x830c3bc0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:158
      #3  0x80a91a7b in os_event::wait_low (this=0x830c3bc0, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:325
      #4  0x80a91de9 in os_event_wait_low (event=0x830c3bc0, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:507
      #5  0x80b6ce07 in srv_resume_thread (slot=0x8159743c <srv_sys+188>, sig_count=1, wait=true, timeout_usec=0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/srv/srv0srv.cc:937
      #6  0x80b711a9 in srv_purge_coordinator_suspend (slot=0x8159743c <srv_sys+188>, rseg_history_len=6) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/srv/srv0srv.cc:2778
      #7  0x80b7150e in srv_purge_coordinator_thread (arg=0x0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/srv/srv0srv.cc:2865
      #8  0xb742a2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #9  0xb716b16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 9 (Thread 0xb59ccb40 (LWP 1489)):
      #0  0xb77d1c31 in __kernel_vsyscall ()
      #1  0xb742fe56 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80df2651 in safe_cond_timedwait (cond=0x81f64bc0 <COND_checkpoint>, mp=0x81f64b40 <LOCK_checkpoint>, abstime=0xb59cc1dc, file=0x80ff0f44 "/home/buildbot/buildbot/build/mariadb-10.2.37/include/mysql/psi/mysql_thread.h", line=1193) at /home/buildbot/buildbot/build/mariadb-10.2.37/mysys/thr_mutex.c:545
      #3  0x8093fb13 in inline_mysql_cond_timedwait (that=0x81f64bc0 <COND_checkpoint>, mutex=0x81f64b40 <LOCK_checkpoint>, abstime=0xb59cc1dc, src_file=0x80ff0f94 "/home/buildbot/buildbot/build/mariadb-10.2.37/storage/maria/ma_servicethread.c", src_line=116) at /home/buildbot/buildbot/build/mariadb-10.2.37/include/mysql/psi/mysql_thread.h:1193
      #4  0x8093ffea in my_service_thread_sleep (control=0x8158e878 <checkpoint_control>, sleep_time=30000000000) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/maria/ma_servicethread.c:115
      #5  0x80934514 in ma_checkpoint_background (arg=0x1e) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/maria/ma_checkpoint.c:709
      #6  0xb742a2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #7  0xb716b16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 8 (Thread 0xaf3f8b40 (LWP 1650)):
      #0  0xb77d1c31 in __kernel_vsyscall ()
      #1  0xb742fe56 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80a918a8 in os_event::timed_wait (this=0x830c3d40, abstime=0xaf3f8118) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:275
      #3  0x80a91bb9 in os_event::wait_time_low (this=0x830c3d40, time_in_usec=1000000, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:385
      #4  0x80a91db7 in os_event_wait_time_low (event=0x830c3d40, time_in_usec=1000000, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:490
      #5  0x80b6f0bd in srv_error_monitor_thread () at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/srv/srv0srv.cc:1912
      #6  0xb742a2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #7  0xb716b16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 7 (Thread 0xabdffb40 (LWP 1693)):
      #0  0xb77d1c31 in __kernel_vsyscall ()
      #1  0xb742fa8c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80a92042 in os_event::wait (this=0x830c3c80) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:158
      #3  0x80a91a7b in os_event::wait_low (this=0x830c3c80, reset_sig_count=3) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:325
      #4  0x80a91de9 in os_event_wait_low (event=0x830c3c80, reset_sig_count=0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:507
      #5  0x80b6ce07 in srv_resume_thread (slot=0x81597474 <srv_sys+244>, sig_count=0, wait=true, timeout_usec=0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/srv/srv0srv.cc:937
      #6  0x80b70d19 in srv_worker_thread (arg=0x0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/srv/srv0srv.cc:2617
      #7  0xb742a2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #8  0xb716b16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 6 (Thread 0xb0fbeb40 (LWP 1573)):
      #0  0xb77d1c31 in __kernel_vsyscall ()
      #1  0xb742fe56 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80a918a8 in os_event::timed_wait (this=0x830c3e60, abstime=0xb0fbe078) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:275
      #3  0x80a91bb9 in os_event::wait_time_low (this=0x830c3e60, time_in_usec=1000000, reset_sig_count=7213) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:385
      #4  0x80a91db7 in os_event_wait_time_low (event=0x830c3e60, time_in_usec=1000000, reset_sig_count=7213) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:490
      #5  0x80c4f794 in pc_sleep_if_needed (next_loop_time=7235540, sig_count=7213, cur_time=7234540) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/buf/buf0flu.cc:2683
      #6  0x80c5061c in buf_flush_page_cleaner_coordinator () at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/buf/buf0flu.cc:3149
      #7  0xb742a2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #8  0xb716b16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 5 (Thread 0xac9feb40 (LWP 1692)):
      #0  0xb77d1c31 in __kernel_vsyscall ()
      #1  0xb742fa8c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80a92042 in os_event::wait (this=0x830c3c20) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:158
      #3  0x80a91a7b in os_event::wait_low (this=0x830c3c20, reset_sig_count=8) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:325
      #4  0x80a91de9 in os_event_wait_low (event=0x830c3c20, reset_sig_count=0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:507
      #5  0x80b6ce07 in srv_resume_thread (slot=0x81597458 <srv_sys+216>, sig_count=0, wait=true, timeout_usec=0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/srv/srv0srv.cc:937
      #6  0x80b70d19 in srv_worker_thread (arg=0x0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/srv/srv0srv.cc:2617
      #7  0xb742a2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #8  0xb716b16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 4 (Thread 0xb03fab40 (LWP 1688)):
      #0  0xb77d1c31 in __kernel_vsyscall ()
      #1  0xb74338aa in nanosleep () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80a923c8 in os_thread_sleep (tm=1000000) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0thread.cc:231
      #3  0x80b705ca in srv_master_sleep () at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/srv/srv0srv.cc:2419
      #4  0x80b706fa in srv_master_thread (arg=0x0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/srv/srv0srv.cc:2459
      #5  0xb742a2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #6  0xb716b16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 3 (Thread 0xae3f6b40 (LWP 1689)):
      #0  0xb77d1c31 in __kernel_vsyscall ()
      #1  0xb742fe56 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80a918a8 in os_event::timed_wait (this=0x83246ee8, abstime=0xae3f6238) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:275
      #3  0x80a91bb9 in os_event::wait_time_low (this=0x83246ee8, time_in_usec=10000000, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:385
      #4  0x80a91db7 in os_event_wait_time_low (event=0x83246ee8, time_in_usec=10000000, reset_sig_count=0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:490
      #5  0x80ca667e in dict_stats_thread () at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/dict/dict0stats_bg.cc:475
      #6  0xb742a2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #7  0xb716b16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 2 (Thread 0xab5feb40 (LWP 1694)):
      #0  0xb77d1c31 in __kernel_vsyscall ()
      #1  0xb742fa8c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80a92042 in os_event::wait (this=0x830c3ce0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:158
      #3  0x80a91a7b in os_event::wait_low (this=0x830c3ce0, reset_sig_count=8) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:325
      #4  0x80a91de9 in os_event_wait_low (event=0x830c3ce0, reset_sig_count=0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:507
      #5  0x80b6ce07 in srv_resume_thread (slot=0x81597490 <srv_sys+272>, sig_count=0, wait=true, timeout_usec=0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/srv/srv0srv.cc:937
      #6  0x80b70d19 in srv_worker_thread (arg=0x0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/srv/srv0srv.cc:2617
      #7  0xb742a2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #8  0xb716b16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 1 (Thread 0xb6ef17c0 (LWP 1294)):
      #0  0xb77d1c31 in __kernel_vsyscall ()
      #1  0xb7430ce1 in pthread_kill () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80ded81f in my_write_core (sig=6) at /home/buildbot/buildbot/build/mariadb-10.2.37/mysys/stacktrace.c:382
      #3  0x806e277c in handle_fatal_signal (sig=6) at /home/buildbot/buildbot/build/mariadb-10.2.37/sql/signal_handler.cc:343
      #4  <signal handler called>
      #5  0xb77d1c31 in __kernel_vsyscall ()
      #6  0xb7160f8f in poll () from /lib/i386-linux-gnu/libc.so.6
      #7  0x80399319 in handle_connections_sockets () at /home/buildbot/buildbot/build/mariadb-10.2.37/sql/mysqld.cc:6724
      #8  0x80398626 in mysqld_main (argc=133, argv=0x82fc3058) at /home/buildbot/buildbot/build/mariadb-10.2.37/sql/mysqld.cc:6192
      #9  0x8038c97b in main (argc=11, argv=0xbff16f74) at /home/buildbot/buildbot/build/mariadb-10.2.37/sql/main.cc:25
       
       - deleting it, already saved 0
       - found 'core' (0/0)
       
      Trying 'dbx' to get a backtrace
       
      Trying 'gdb' to get a backtrace from coredump /mnt/buildbot/build/mariadb-10.2.37/mysql-test/var/2/log/spider/bg.spider3_fixes_part/mysqld.3.3/data/core
      Core generated by '/mnt/buildbot/build/mariadb-10.2.37/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 1287]
      [New LWP 1463]
      [New LWP 1430]
      [New LWP 1679]
      [New LWP 1405]
      [New LWP 1592]
      [New LWP 1705]
      [New LWP 1591]
      [New LWP 1641]
      [New LWP 1640]
      [New LWP 1676]
      [New LWP 1763]
      [New LWP 1687]
      [New LWP 1675]
      [New LWP 1639]
      [New LWP 1674]
      [New LWP 1590]
      [New LWP 1645]
      [New LWP 1464]
      [New LWP 1673]
      [New LWP 1644]
      [New LWP 1459]
      [New LWP 1462]
      [New LWP 1461]
      [New LWP 1643]
      [New LWP 1460]
      [New LWP 1642]
      [New LWP 1458]
      [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-10.2.37/sql/mysqld --defaults-group-suffix=.3.3 --d'.
      Program terminated with signal SIGABRT, Aborted.
      #0  0xb7715c31 in __kernel_vsyscall ()
      [Current thread is 1 (Thread 0xb6e357c0 (LWP 1287))]
      #0  0xb7715c31 in __kernel_vsyscall ()
      #1  0xb7374ce1 in pthread_kill () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80e1981f in my_write_core (sig=6) at /home/buildbot/buildbot/build/mariadb-10.2.37/mysys/stacktrace.c:382
      #3  0x8070e77c in handle_fatal_signal (sig=6) at /home/buildbot/buildbot/build/mariadb-10.2.37/sql/signal_handler.cc:343
      #4  <signal handler called>
      #5  0xb7715c31 in __kernel_vsyscall ()
      #6  0xb70a4f8f in poll () from /lib/i386-linux-gnu/libc.so.6
      #7  0x803c5319 in handle_connections_sockets () at /home/buildbot/buildbot/build/mariadb-10.2.37/sql/mysqld.cc:6724
      #8  0x803c4626 in mysqld_main (argc=133, argv=0x82fa9058) at /home/buildbot/buildbot/build/mariadb-10.2.37/sql/mysqld.cc:6192
      #9  0x803b897b in main (argc=11, argv=0xbf9dfee4) at /home/buildbot/buildbot/build/mariadb-10.2.37/sql/main.cc:25
       
      Thread 28 (Thread 0xb3fc4b40 (LWP 1458)):
      #0  0xb76e1570 in ?? () from /lib/i386-linux-gnu/libaio.so.1
      #1  0xb76e15e6 in io_getevents () from /lib/i386-linux-gnu/libaio.so.1
      #2  0x80aafea3 in LinuxAIOHandler::collect (this=0xb3fc40f0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0file.cc:1936
      #3  0x80ab04b5 in LinuxAIOHandler::poll (this=0xb3fc40f0, m1=0xb3fc4154, m2=0xb3fc4158, request=0xb3fc4178) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0file.cc:2097
      #4  0x80ab0619 in os_aio_linux_handler (global_segment=0, m1=0xb3fc4154, m2=0xb3fc4158, request=0xb3fc4178) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0file.cc:2151
      #5  0x80ab5661 in os_aio_handler (segment=0, m1=0xb3fc4154, m2=0xb3fc4158, request=0xb3fc4178) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0file.cc:5784
      #6  0x80ce90fc in fil_aio_wait (segment=0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/fil/fil0fil.cc:5115
      #7  0x80b9fab8 in io_handler_thread (arg=0x81fc5b60 <n>) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/srv/srv0start.cc:332
      #8  0xb736e2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #9  0xb70af16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 27 (Thread 0xad3f4b40 (LWP 1642)):
      #0  0xb7715c31 in __kernel_vsyscall ()
      #1  0xb7373a8c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80abe042 in os_event::wait (this=0x830a9bc0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:158
      #3  0x80abda7b in os_event::wait_low (this=0x830a9bc0, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:325
      #4  0x80abdde9 in os_event_wait_low (event=0x830a9bc0, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:507
      #5  0x80b98e07 in srv_resume_thread (slot=0x815c343c <srv_sys+188>, sig_count=1, wait=true, timeout_usec=0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/srv/srv0srv.cc:937
      #6  0x80b9d1a9 in srv_purge_coordinator_suspend (slot=0x815c343c <srv_sys+188>, rseg_history_len=6) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/srv/srv0srv.cc:2778
      #7  0x80b9d50e in srv_purge_coordinator_thread (arg=0x0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/srv/srv0srv.cc:2865
      #8  0xb736e2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #9  0xb70af16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 26 (Thread 0xb2fc2b40 (LWP 1460)):
      #0  0xb76e1570 in ?? () from /lib/i386-linux-gnu/libaio.so.1
      #1  0xb76e15e6 in io_getevents () from /lib/i386-linux-gnu/libaio.so.1
      #2  0x80aafea3 in LinuxAIOHandler::collect (this=0xb2fc20f0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0file.cc:1936
      #3  0x80ab04b5 in LinuxAIOHandler::poll (this=0xb2fc20f0, m1=0xb2fc2154, m2=0xb2fc2158, request=0xb2fc2178) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0file.cc:2097
      #4  0x80ab0619 in os_aio_linux_handler (global_segment=2, m1=0xb2fc2154, m2=0xb2fc2158, request=0xb2fc2178) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0file.cc:2151
      #5  0x80ab5661 in os_aio_handler (segment=2, m1=0xb2fc2154, m2=0xb2fc2158, request=0xb2fc2178) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0file.cc:5784
      #6  0x80ce90fc in fil_aio_wait (segment=2) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/fil/fil0fil.cc:5115
      #7  0x80b9fab8 in io_handler_thread (arg=0x81fc5b68 <n+8>) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/srv/srv0start.cc:332
      #8  0xb736e2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #9  0xb70af16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 25 (Thread 0xacbf3b40 (LWP 1643)):
      #0  0xb7715c31 in __kernel_vsyscall ()
      #1  0xb7373a8c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80abe042 in os_event::wait (this=0x830a9c20) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:158
      #3  0x80abda7b in os_event::wait_low (this=0x830a9c20, reset_sig_count=4) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:325
      #4  0x80abdde9 in os_event_wait_low (event=0x830a9c20, reset_sig_count=0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:507
      #5  0x80b98e07 in srv_resume_thread (slot=0x815c3458 <srv_sys+216>, sig_count=0, wait=true, timeout_usec=0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/srv/srv0srv.cc:937
      #6  0x80b9cd19 in srv_worker_thread (arg=0x0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/srv/srv0srv.cc:2617
      #7  0xb736e2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #8  0xb70af16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 24 (Thread 0xb27c1b40 (LWP 1461)):
      #0  0xb76e1570 in ?? () from /lib/i386-linux-gnu/libaio.so.1
      #1  0xb76e15e6 in io_getevents () from /lib/i386-linux-gnu/libaio.so.1
      #2  0x80aafea3 in LinuxAIOHandler::collect (this=0xb27c10f0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0file.cc:1936
      #3  0x80ab04b5 in LinuxAIOHandler::poll (this=0xb27c10f0, m1=0xb27c1154, m2=0xb27c1158, request=0xb27c1178) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0file.cc:2097
      #4  0x80ab0619 in os_aio_linux_handler (global_segment=3, m1=0xb27c1154, m2=0xb27c1158, request=0xb27c1178) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0file.cc:2151
      #5  0x80ab5661 in os_aio_handler (segment=3, m1=0xb27c1154, m2=0xb27c1158, request=0xb27c1178) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0file.cc:5784
      #6  0x80ce90fc in fil_aio_wait (segment=3) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/fil/fil0fil.cc:5115
      #7  0x80b9fab8 in io_handler_thread (arg=0x81fc5b6c <n+12>) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/srv/srv0start.cc:332
      #8  0xb736e2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #9  0xb70af16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 23 (Thread 0xb1fc0b40 (LWP 1462)):
      #0  0xb76e1570 in ?? () from /lib/i386-linux-gnu/libaio.so.1
      #1  0xb76e15e6 in io_getevents () from /lib/i386-linux-gnu/libaio.so.1
      #2  0x80aafea3 in LinuxAIOHandler::collect (this=0xb1fc00f0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0file.cc:1936
      #3  0x80ab04b5 in LinuxAIOHandler::poll (this=0xb1fc00f0, m1=0xb1fc0154, m2=0xb1fc0158, request=0xb1fc0178) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0file.cc:2097
      #4  0x80ab0619 in os_aio_linux_handler (global_segment=4, m1=0xb1fc0154, m2=0xb1fc0158, request=0xb1fc0178) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0file.cc:2151
      #5  0x80ab5661 in os_aio_handler (segment=4, m1=0xb1fc0154, m2=0xb1fc0158, request=0xb1fc0178) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0file.cc:5784
      #6  0x80ce90fc in fil_aio_wait (segment=4) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/fil/fil0fil.cc:5115
      #7  0x80b9fab8 in io_handler_thread (arg=0x81fc5b70 <n+16>) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/srv/srv0start.cc:332
      #8  0xb736e2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #9  0xb70af16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 22 (Thread 0xb37c3b40 (LWP 1459)):
      #0  0xb76e1570 in ?? () from /lib/i386-linux-gnu/libaio.so.1
      #1  0xb76e15e6 in io_getevents () from /lib/i386-linux-gnu/libaio.so.1
      #2  0x80aafea3 in LinuxAIOHandler::collect (this=0xb37c30f0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0file.cc:1936
      #3  0x80ab04b5 in LinuxAIOHandler::poll (this=0xb37c30f0, m1=0xb37c3154, m2=0xb37c3158, request=0xb37c3178) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0file.cc:2097
      #4  0x80ab0619 in os_aio_linux_handler (global_segment=1, m1=0xb37c3154, m2=0xb37c3158, request=0xb37c3178) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0file.cc:2151
      #5  0x80ab5661 in os_aio_handler (segment=1, m1=0xb37c3154, m2=0xb37c3158, request=0xb37c3178) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0file.cc:5784
      #6  0x80ce90fc in fil_aio_wait (segment=1) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/fil/fil0fil.cc:5115
      #7  0x80b9fab8 in io_handler_thread (arg=0x81fc5b64 <n+4>) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/srv/srv0start.cc:332
      #8  0xb736e2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #9  0xb70af16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 21 (Thread 0xac3f2b40 (LWP 1644)):
      #0  0xb7715c31 in __kernel_vsyscall ()
      #1  0xb7373a8c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80abe042 in os_event::wait (this=0x830a9c80) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:158
      #3  0x80abda7b in os_event::wait_low (this=0x830a9c80, reset_sig_count=4) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:325
      #4  0x80abdde9 in os_event_wait_low (event=0x830a9c80, reset_sig_count=0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:507
      #5  0x80b98e07 in srv_resume_thread (slot=0x815c3474 <srv_sys+244>, sig_count=0, wait=true, timeout_usec=0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/srv/srv0srv.cc:937
      #6  0x80b9cd19 in srv_worker_thread (arg=0x0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/srv/srv0srv.cc:2617
      #7  0xb736e2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #8  0xb70af16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 20 (Thread 0xaafffb40 (LWP 1673)):
      #0  0xb7715c31 in __kernel_vsyscall ()
      #1  0xb7373a8c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80abe042 in os_event::wait (this=0x830a9e00) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:158
      #3  0x80abda7b in os_event::wait_low (this=0x830a9e00, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:325
      #4  0x80abdde9 in os_event_wait_low (event=0x830a9e00, reset_sig_count=0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:507
      #5  0x80c719c6 in buf_dump_thread () at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/buf/buf0dump.cc:806
      #6  0xb736e2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #7  0xb70af16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 19 (Thread 0xb0fbeb40 (LWP 1464)):
      #0  0xb7715c31 in __kernel_vsyscall ()
      #1  0xb7373e56 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80abd8a8 in os_event::timed_wait (this=0x830a9e60, abstime=0xb0fbe078) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:275
      #3  0x80abdbb9 in os_event::wait_time_low (this=0x830a9e60, time_in_usec=1000000, reset_sig_count=7212) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:385
      #4  0x80abddb7 in os_event_wait_time_low (event=0x830a9e60, time_in_usec=1000000, reset_sig_count=7212) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:490
      #5  0x80c7b794 in pc_sleep_if_needed (next_loop_time=7234424, sig_count=7212, cur_time=7233424) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/buf/buf0flu.cc:2683
      #6  0x80c7c61c in buf_flush_page_cleaner_coordinator () at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/buf/buf0flu.cc:3149
      #7  0xb736e2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #8  0xb70af16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 18 (Thread 0xabbf1b40 (LWP 1645)):
      #0  0xb7715c31 in __kernel_vsyscall ()
      #1  0xb7373a8c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80abe042 in os_event::wait (this=0x830a9ce0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:158
      #3  0x80abda7b in os_event::wait_low (this=0x830a9ce0, reset_sig_count=4) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:325
      #4  0x80abdde9 in os_event_wait_low (event=0x830a9ce0, reset_sig_count=0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:507
      #5  0x80b98e07 in srv_resume_thread (slot=0x815c3490 <srv_sys+272>, sig_count=0, wait=true, timeout_usec=0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/srv/srv0srv.cc:937
      #6  0x80b9cd19 in srv_worker_thread (arg=0x0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/srv/srv0srv.cc:2617
      #7  0xb736e2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #8  0xb70af16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 17 (Thread 0xafbf9b40 (LWP 1590)):
      #0  0xb7715c31 in __kernel_vsyscall ()
      #1  0xb7373e56 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80abd8a8 in os_event::timed_wait (this=0x83203eb8, abstime=0xafbf9218) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:275
      #3  0x80abdbb9 in os_event::wait_time_low (this=0x83203eb8, time_in_usec=1000000, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:385
      #4  0x80abddb7 in os_event_wait_time_low (event=0x83203eb8, time_in_usec=1000000, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:490
      #5  0x80a88409 in lock_wait_timeout_thread () at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/lock/lock0wait.cc:525
      #6  0xb736e2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #7  0xb70af16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 16 (Thread 0xaa7feb40 (LWP 1674)):
      #0  0xb7715c31 in __kernel_vsyscall ()
      #1  0xb73778aa in nanosleep () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80abe3c8 in os_thread_sleep (tm=1000000) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0thread.cc:231
      #3  0x80c4e30d in btr_defragment_thread () at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/btr/btr0defragment.cc:710
      #4  0xb736e2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #5  0xb70af16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 15 (Thread 0xb03fab40 (LWP 1639)):
      #0  0xb7715c31 in __kernel_vsyscall ()
      #1  0xb73778aa in nanosleep () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80abe3c8 in os_thread_sleep (tm=1000000) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0thread.cc:231
      #3  0x80b9c5ca in srv_master_sleep () at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/srv/srv0srv.cc:2419
      #4  0x80b9c6fa in srv_master_thread (arg=0x0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/srv/srv0srv.cc:2459
      #5  0xb736e2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #6  0xb70af16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 14 (Thread 0xa9ffdb40 (LWP 1675)):
      #0  0xb7715c31 in __kernel_vsyscall ()
      #1  0xb7373a8c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80abe042 in os_event::wait (this=0x830a9ec0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:158
      #3  0x80abda7b in os_event::wait_low (this=0x830a9ec0, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:325
      #4  0x80abdde9 in os_event_wait_low (event=0x830a9ec0, reset_sig_count=0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:507
      #5  0x80c5bf5b in buf_resize_thread () at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/buf/buf0buf.cc:3109
      #6  0xb736e2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #7  0xb70af16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 13 (Thread 0xb417bb40 (LWP 1687)):
      #0  0xb7715c31 in __kernel_vsyscall ()
      #1  0xb73781cd in do_sigwait () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0xb737825e in sigwait () from /lib/i386-linux-gnu/libpthread.so.0
      #3  0x803bed61 in signal_hand (arg=0x0) at /home/buildbot/buildbot/build/mariadb-10.2.37/sql/mysqld.cc:3557
      #4  0xb736e2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #5  0xb70af16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 12 (Thread 0xb0773b40 (LWP 1763)):
      #0  0xb7715c31 in __kernel_vsyscall ()
      #1  0xb7373e56 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80e1e651 in safe_cond_timedwait (cond=0x81767000 <COND_thread_cache>, mp=0x81768f00 <LOCK_thread_cache>, abstime=0xb07731bc, file=0x80ea10c0 "/home/buildbot/buildbot/build/mariadb-10.2.37/include/mysql/psi/mysql_thread.h", line=1193) at /home/buildbot/buildbot/build/mariadb-10.2.37/mysys/thr_mutex.c:545
      #3  0x803b919c in inline_mysql_cond_timedwait (that=0x81767000 <COND_thread_cache>, mutex=0x81768f00 <LOCK_thread_cache>, abstime=0xb07731bc, src_file=0x80ea2ecc "/home/buildbot/buildbot/build/mariadb-10.2.37/sql/mysqld.cc", src_line=3021) at /home/buildbot/buildbot/build/mariadb-10.2.37/include/mysql/psi/mysql_thread.h:1193
      #4  0x803bdf74 in cache_thread (thd=0xab10a268) at /home/buildbot/buildbot/build/mariadb-10.2.37/sql/mysqld.cc:3020
      #5  0x803be1ff in one_thread_per_connection_end (thd=0xab10a268, put_in_cache=true) at /home/buildbot/buildbot/build/mariadb-10.2.37/sql/mysqld.cc:3109
      #6  0x805ea3cb in do_handle_one_connection (connect=0x8331f628) at /home/buildbot/buildbot/build/mariadb-10.2.37/sql/sql_connect.cc:1355
      #7  0x805ea03e in handle_one_connection (arg=0x8331f628) at /home/buildbot/buildbot/build/mariadb-10.2.37/sql/sql_connect.cc:1241
      #8  0xb736e2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #9  0xb70af16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 11 (Thread 0xa97fcb40 (LWP 1676)):
      #0  0xb7715c31 in __kernel_vsyscall ()
      #1  0xb7373a8c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80e1e3a6 in safe_cond_wait (cond=0xa97fc204, mp=0xa97fc238, file=0x81029ee0 "/home/buildbot/buildbot/build/mariadb-10.2.37/include/mysql/psi/mysql_thread.h", line=1156) at /home/buildbot/buildbot/build/mariadb-10.2.37/mysys/thr_mutex.c:491
      #3  0x809f3495 in inline_mysql_cond_wait (that=0xa97fc204, mutex=0xa97fc238, src_file=0x8102bb68 "/home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/handler/ha_innodb.cc", src_line=348) at /home/buildbot/buildbot/build/mariadb-10.2.37/include/mysql/psi/mysql_thread.h:1156
      #4  0x809f76cc in thd_destructor_proxy () at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/handler/ha_innodb.cc:348
      #5  0xb736e2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #6  0xb70af16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 10 (Thread 0xae3f6b40 (LWP 1640)):
      #0  0xb7715c31 in __kernel_vsyscall ()
      #1  0xb7373e56 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80abd8a8 in os_event::timed_wait (this=0x8322cee8, abstime=0xae3f6238) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:275
      #3  0x80abdbb9 in os_event::wait_time_low (this=0x8322cee8, time_in_usec=10000000, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:385
      #4  0x80abddb7 in os_event_wait_time_low (event=0x8322cee8, time_in_usec=10000000, reset_sig_count=0) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:490
      #5  0x80cd267e in dict_stats_thread () at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/dict/dict0stats_bg.cc:475
      #6  0xb736e2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #7  0xb70af16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 9 (Thread 0xadbf5b40 (LWP 1641)):
      #0  0xb7715c31 in __kernel_vsyscall ()
      #1  0xb7373e56 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80abd8a8 in os_event::timed_wait (this=0x8326b910, abstime=0xadbf50f8) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:275
      #3  0x80abdbb9 in os_event::wait_time_low (this=0x8326b910, time_in_usec=5000000, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:385
      #4  0x80abddb7 in os_event_wait_time_low (event=0x8326b910, time_in_usec=5000000, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:490
      #5  0x80c01e81 in ib_wqueue_timedwait (wq=0x8326b828, wait_in_usecs=5000000) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/ut/ut0wqueue.cc:156
      #6  0x80d283c2 in fts_optimize_thread (arg=0x8326b828) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/fts/fts0opt.cc:2829
      #7  0xb736e2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #8  0xb70af16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 8 (Thread 0xaf3f8b40 (LWP 1591)):
      #0  0xb7715c31 in __kernel_vsyscall ()
      #1  0xb7373e56 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80abd8a8 in os_event::timed_wait (this=0x830a9d40, abstime=0xaf3f8118) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:275
      #3  0x80abdbb9 in os_event::wait_time_low (this=0x830a9d40, time_in_usec=1000000, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:385
      #4  0x80abddb7 in os_event_wait_time_low (event=0x830a9d40, time_in_usec=1000000, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:490
      #5  0x80b9b0bd in srv_error_monitor_thread () at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/srv/srv0srv.cc:1912
      #6  0xb736e2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #7  0xb70af16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 7 (Thread 0xb07bdb40 (LWP 1705)):
      #0  0xb7715c31 in __kernel_vsyscall ()
      #1  0xb7373a8c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80e1e3a6 in safe_cond_wait (cond=0x8176c760 <COND_manager>, mp=0x8176c6e0 <LOCK_manager>, file=0x80ecdee0 "/home/buildbot/buildbot/build/mariadb-10.2.37/include/mysql/psi/mysql_thread.h", line=1156) at /home/buildbot/buildbot/build/mariadb-10.2.37/mysys/thr_mutex.c:491
      #3  0x804a20a0 in inline_mysql_cond_wait (that=0x8176c760 <COND_manager>, mutex=0x8176c6e0 <LOCK_manager>, src_file=0x80ecdfdc "/home/buildbot/buildbot/build/mariadb-10.2.37/sql/sql_manager.cc", src_line=102) at /home/buildbot/buildbot/build/mariadb-10.2.37/include/mysql/psi/mysql_thread.h:1156
      #4  0x804a24d1 in handle_manager (arg=0x0) at /home/buildbot/buildbot/build/mariadb-10.2.37/sql/sql_manager.cc:102
      #5  0xb736e2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #6  0xb70af16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 6 (Thread 0xaebf7b40 (LWP 1592)):
      #0  0xb7715c31 in __kernel_vsyscall ()
      #1  0xb7373e56 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80abd8a8 in os_event::timed_wait (this=0x830a9da0, abstime=0xaebf7208) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:275
      #3  0x80abdbb9 in os_event::wait_time_low (this=0x830a9da0, time_in_usec=5000000, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:385
      #4  0x80abddb7 in os_event_wait_time_low (event=0x830a9da0, time_in_usec=5000000, reset_sig_count=1) at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/os/os0event.cc:490
      #5  0x80b9ab71 in srv_monitor_thread () at /home/buildbot/buildbot/build/mariadb-10.2.37/storage/innobase/srv/srv0srv.cc:1748
      #6  0xb736e2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #7  0xb70af16e in clone () from /lib/i386-linux-gnu/libc.so.6
       
      Thread 5 (Thread 0xb6d35b40 (LWP 1405)):
      #0  0xb7715c31 in __kernel_vsyscall ()
      #1  0xb7373e56 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
      #2  0x80e1e651 in safe_cond_timedwait (cond=0x81fd9f60 <COND_timer>, mp=0x81fd9ee0 <LOCK_timer>, abstime=0xb6d35290, file=0x811a2058 "/home/buildbot/buildbot/build/mariadb-10.2.37/include/mysql/psi/mysql_thread.h", line=1193) at /home/buildbot/buildbot/build/mariadb-10.2.37/mysys/thr_mutex.c:545
      #3  0x80e1f55a in inline_mysql_cond_timedwait (that=0x81fd9f60 <COND_timer>, mutex=0x81fd9ee0 <LOCK_timer>, abstime=0xb6d35290, src_file=0x811a20a8 "/home/buildbot/buildbot/build/mariadb-10.2.37/mysys/thr_timer.c", src_line=292) at /home/buildbot/buildbot/build/mariadb-10.2.37/include/mysql/psi/mysql_thread.h:1193
      #4  0x80e20032 in timer_handler (arg=0x0) at /home/buildbot/buildbot/build/mariadb-10.2.37/mysys/thr_timer.c:292
      #5  0xb736e2b5 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
      #6  0xb70af16e in clone () from /lib/i386-linux-gnu/libc.so.6
      

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            Assignee:
            nayuta-yanagisawa Nayuta Yanagisawa
            Reporter:
            elenst Elena Stepanova
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