innodb_zip.innochecksum failed in buildbot, server didn't shut down

innodb_zip.innochecksum '8k,crc32,innodb' w4 [ fail ]  Found warnings/errors in server log file!

        Test ended at 2019-06-26 04:32:49

line

2019-06-26  4:32:03 0 [Warning] /usr/sbin/mysqld: Thread 4 (user : '') did not exit

Attempting backtrace. You can use the following information to find out

^ Found warnings in /dev/shm/var/4/log/mysqld.1.err

ok

 - found 'core' (0/0)

Trying 'dbx' to get a backtrace

Trying 'gdb' to get a backtrace from coredump /dev/shm/var/4/log/innodb_zip.innochecksum-8k,crc32,innodb/mysqld.1/data/core

Core generated by '/usr/sbin/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 18842]

[New LWP 18843]

[New LWP 18865]

[New LWP 18846]

[New LWP 18854]

[New LWP 18850]

[New LWP 18851]

[New LWP 18853]

[New LWP 18848]

[New LWP 18867]

[New LWP 18855]

[New LWP 18847]

[New LWP 18864]

[New LWP 18863]

[New LWP 18858]

[New LWP 18849]

[New LWP 18862]

[New LWP 18844]

[New LWP 18845]

[Thread debugging using libthread_db enabled]

Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".

Core was generated by `/usr/sbin/mysqld --defaults-group-suffix=.1 --defaults-file=/dev/shm/var/4/my.c'.

Program terminated with signal SIGABRT, Aborted.

#0  __pthread_kill (threadid=<optimized out>, signo=signo@entry=6) at ../sysdeps/unix/sysv/linux/pthread_kill.c:56

56	../sysdeps/unix/sysv/linux/pthread_kill.c: No such file or directory.

[Current thread is 1 (Thread 0x7fe6095467c0 (LWP 18842))]

#0  __pthread_kill (threadid=<optimized out>, signo=signo@entry=6) at ../sysdeps/unix/sysv/linux/pthread_kill.c:56

#1  0x0000557147ca0217 in my_write_core (sig=sig@entry=6) at ./mysys/stacktrace.c:481

#2  0x000055714779e2e8 in handle_fatal_signal (sig=6) at ./sql/signal_handler.cc:343

#3  <signal handler called>

#4  0x00007fe609be8037 in __GI___select (nfds=nfds@entry=0, readfds=readfds@entry=0x0, writefds=writefds@entry=0x0, exceptfds=exceptfds@entry=0x0, timeout=timeout@entry=0x7ffdc1219f10) at ../sysdeps/unix/sysv/linux/select.c:41

#5  0x0000557147c9deff in my_sleep (m_seconds=m_seconds@entry=1000) at ./mysys/my_sleep.c:29

#6  0x00005571474dbdda in close_connections () at ./sql/mysqld.cc:1798

#7  mysqld_main (argc=<optimized out>, argv=<optimized out>) at ./sql/mysqld.cc:5915

#8  0x00007fe609b1b09b in __libc_start_main (main=0x5571474b68e0 <main(int, char**)>, argc=27, argv=0x7ffdc121a178, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffdc121a168) at ../csu/libc-start.c:308

#9  0x00005571474ced3a in _start () at ./sql/mysqld.cc:4671

Thread 19 (Thread 0x7fe5fe593700 (LWP 18845)):

#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38

#1  0x00007fe60a6aaa3a in ?? () from /lib/x86_64-linux-gnu/libaio.so.1

#2  0x000055714799f711 in LinuxAIOHandler::collect (this=0x7fe5fe592be0) at ./storage/innobase/os/os0file.cc:1809

#3  0x000055714799fb45 in LinuxAIOHandler::poll (this=0x7fe5fe592be0, m1=0x7fe5fe592c80, m2=0x7fe5fe592c88, request=0x7fe5fe592c90) at ./storage/innobase/os/os0file.cc:1968

#4  0x00005571479a3e30 in os_aio_linux_handler (request=0x7fe5fe592c90, m2=0x7fe5fe592c88, m1=0x7fe5fe592c80, global_segment=<optimized out>) at /usr/include/c++/8/bits/stl_vector.h:805

#5  os_aio_handler (segment=segment@entry=0, m1=m1@entry=0x7fe5fe592c80, m2=m2@entry=0x7fe5fe592c88, request=request@entry=0x7fe5fe592c90) at ./storage/innobase/os/os0file.cc:5561

#6  0x0000557147aeeef8 in fil_aio_wait (segment=segment@entry=0) at ./storage/innobase/fil/fil0fil.cc:4344

#7  0x0000557147a25eb0 in io_handler_thread (arg=<optimized out>) at ./storage/innobase/srv/srv0start.cc:325

#8  0x00007fe60a8b4fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486

#9  0x00007fe609bf04cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 18 (Thread 0x7fe5ffd95700 (LWP 18844)):

#0  futex_abstimed_wait_cancelable (private=0, abstime=0x7fe5ffd94d30, expected=0, futex_word=0x557148ced868 <COND_checkpoint+40>) at ../sysdeps/unix/sysv/linux/futex-internal.h:205

#1  __pthread_cond_wait_common (abstime=0x7fe5ffd94d30, mutex=0x557148ced880 <LOCK_checkpoint>, cond=0x557148ced840 <COND_checkpoint>) at pthread_cond_wait.c:539

#2  __pthread_cond_timedwait (cond=cond@entry=0x557148ced840 <COND_checkpoint>, mutex=mutex@entry=0x557148ced880 <LOCK_checkpoint>, abstime=abstime@entry=0x7fe5ffd94d30) at pthread_cond_wait.c:667

#3  0x0000557147b8828c in inline_mysql_cond_timedwait (src_file=0x557147eacf88 "/home/buildbot/buildbot/build/mariadb-10.4.7/storage/maria/ma_servicethread.c", src_line=116, abstime=0x7fe5ffd94d30, mutex=0x557148ced880 <LOCK_checkpoint>, that=0x557148ced840 <COND_checkpoint>) at ./include/mysql/psi/mysql_thread.h:1204

#4  my_service_thread_sleep (control=control@entry=0x5571483eb4e0 <checkpoint_control>, sleep_time=<optimized out>) at ./storage/maria/ma_servicethread.c:115

#5  0x0000557147b80749 in ma_checkpoint_background (arg=arg@entry=0x1e) at ./storage/maria/ma_checkpoint.c:707

#6  0x0000557147c519ba in pfs_spawn_thread (arg=0x55714a9f2738) at ./storage/perfschema/pfs.cc:1862

#7  0x00007fe60a8b4fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486

#8  0x00007fe609bf04cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 17 (Thread 0x7fe5ed7fa700 (LWP 18862)):

#0  futex_wait_cancelable (private=0, expected=0, futex_word=0x55714aa36ed4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88

#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x55714aa36e80, cond=0x55714aa36ea8) at pthread_cond_wait.c:502

#2  __pthread_cond_wait (cond=cond@entry=0x55714aa36ea8, mutex=mutex@entry=0x55714aa36e80) at pthread_cond_wait.c:655

#3  0x00005571479a4ec1 in os_event::wait (this=0x55714aa36e70) at ./storage/innobase/include/sync0types.h:476

#4  os_event::wait_low (this=0x55714aa36e70, reset_sig_count=16) at ./storage/innobase/os/os0event.cc:326

#5  0x0000557147a22f5c in srv_resume_thread (sig_count=0, wait=true, timeout_usec=0, slot=0x5571483e8a28 <srv_sys+360>) at ./storage/innobase/srv/srv0srv.cc:2499

#6  srv_worker_thread (arg=<optimized out>) at ./storage/innobase/srv/srv0srv.cc:2499

#7  0x00007fe60a8b4fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486

#8  0x00007fe609bf04cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 16 (Thread 0x7fe5f7fff700 (LWP 18849)):

#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38

#1  0x00007fe60a6aaa3a in ?? () from /lib/x86_64-linux-gnu/libaio.so.1

#2  0x000055714799f711 in LinuxAIOHandler::collect (this=0x7fe5f7ffebe0) at ./storage/innobase/os/os0file.cc:1809

#3  0x000055714799fb45 in LinuxAIOHandler::poll (this=0x7fe5f7ffebe0, m1=0x7fe5f7ffec80, m2=0x7fe5f7ffec88, request=0x7fe5f7ffec90) at ./storage/innobase/os/os0file.cc:1968

#4  0x00005571479a3e30 in os_aio_linux_handler (request=0x7fe5f7ffec90, m2=0x7fe5f7ffec88, m1=0x7fe5f7ffec80, global_segment=<optimized out>) at /usr/include/c++/8/bits/stl_vector.h:805

#5  os_aio_handler (segment=segment@entry=4, m1=m1@entry=0x7fe5f7ffec80, m2=m2@entry=0x7fe5f7ffec88, request=request@entry=0x7fe5f7ffec90) at ./storage/innobase/os/os0file.cc:5561

#6  0x0000557147aeeef8 in fil_aio_wait (segment=segment@entry=4) at ./storage/innobase/fil/fil0fil.cc:4344

#7  0x0000557147a25eb0 in io_handler_thread (arg=<optimized out>) at ./storage/innobase/srv/srv0start.cc:325

#8  0x00007fe60a8b4fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486

#9  0x00007fe609bf04cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7fe5ef7fe700 (LWP 18858)):

#0  0x00007fe60a8bebf0 in __GI___nanosleep (requested_time=requested_time@entry=0x7fe5ef7fdd60, remaining=remaining@entry=0x0) at ../sysdeps/unix/sysv/linux/nanosleep.c:28

#1  0x00005571479a53c0 in os_thread_sleep (tm=tm@entry=1000000) at ./storage/innobase/os/os0thread.cc:225

#2  0x0000557147a222a8 in srv_master_sleep () at ./storage/innobase/srv/srv0srv.cc:2325

#3  srv_master_thread (arg=<optimized out>) at ./storage/innobase/srv/srv0srv.cc:2366

#4  0x00007fe60a8b4fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486

#5  0x00007fe609bf04cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7fe5ecff9700 (LWP 18863)):

#0  futex_wait_cancelable (private=0, expected=0, futex_word=0x55714aa37020) at ../sysdeps/unix/sysv/linux/futex-internal.h:88

#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x55714aa36fd0, cond=0x55714aa36ff8) at pthread_cond_wait.c:502

#2  __pthread_cond_wait (cond=cond@entry=0x55714aa36ff8, mutex=mutex@entry=0x55714aa36fd0) at pthread_cond_wait.c:655

#3  0x00005571479a4ec1 in os_event::wait (this=0x55714aa36fc0) at ./storage/innobase/include/sync0types.h:476

#4  os_event::wait_low (this=0x55714aa36fc0, reset_sig_count=1) at ./storage/innobase/os/os0event.cc:326

#5  0x0000557147aa11fb in buf_dump_thread () at ./storage/innobase/buf/buf0dump.cc:833

#6  0x00007fe60a8b4fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486

#7  0x00007fe609bf04cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7fe5dbfff700 (LWP 18864)):

#0  0x00007fe60a8bebf0 in __GI___nanosleep (requested_time=requested_time@entry=0x7fe5dbffe790, remaining=remaining@entry=0x0) at ../sysdeps/unix/sysv/linux/nanosleep.c:28

#1  0x00005571479a53c0 in os_thread_sleep (tm=tm@entry=1000000) at ./storage/innobase/os/os0thread.cc:225

#2  0x0000557147a8db8a in btr_defragment_thread () at ./storage/innobase/btr/btr0defragment.cc:719

#3  0x00007fe60a8b4fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486

#4  0x00007fe609bf04cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7fe5fd591700 (LWP 18847)):

#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38

#1  0x00007fe60a6aaa3a in ?? () from /lib/x86_64-linux-gnu/libaio.so.1

#2  0x000055714799f711 in LinuxAIOHandler::collect (this=0x7fe5fd590be0) at ./storage/innobase/os/os0file.cc:1809

#3  0x000055714799fb45 in LinuxAIOHandler::poll (this=0x7fe5fd590be0, m1=0x7fe5fd590c80, m2=0x7fe5fd590c88, request=0x7fe5fd590c90) at ./storage/innobase/os/os0file.cc:1968

#4  0x00005571479a3e30 in os_aio_linux_handler (request=0x7fe5fd590c90, m2=0x7fe5fd590c88, m1=0x7fe5fd590c80, global_segment=<optimized out>) at /usr/include/c++/8/bits/stl_vector.h:805

#5  os_aio_handler (segment=segment@entry=2, m1=m1@entry=0x7fe5fd590c80, m2=m2@entry=0x7fe5fd590c88, request=request@entry=0x7fe5fd590c90) at ./storage/innobase/os/os0file.cc:5561

#6  0x0000557147aeeef8 in fil_aio_wait (segment=segment@entry=2) at ./storage/innobase/fil/fil0fil.cc:4344

#7  0x0000557147a25eb0 in io_handler_thread (arg=<optimized out>) at ./storage/innobase/srv/srv0start.cc:325

#8  0x00007fe60a8b4fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486

#9  0x00007fe609bf04cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7fe5f4ff9700 (LWP 18855)):

#0  futex_abstimed_wait_cancelable (private=0, abstime=0x7fe5f4ff8d70, expected=0, futex_word=0x55714aa36fb0) at ../sysdeps/unix/sysv/linux/futex-internal.h:205

#1  __pthread_cond_wait_common (abstime=0x7fe5f4ff8d70, mutex=0x55714aa36f60, cond=0x55714aa36f88) at pthread_cond_wait.c:539

#2  __pthread_cond_timedwait (cond=0x55714aa36f88, mutex=0x55714aa36f60, abstime=abstime@entry=0x7fe5f4ff8d70) at pthread_cond_wait.c:667

#3  0x00005571479a4e12 in os_event::timed_wait (this=<optimized out>, abstime=0x7fe5f4ff8d70) at ./storage/innobase/include/sync0types.h:476

#4  0x00005571479a4f61 in os_event::wait_time_low (this=0x55714aa36f50, time_in_usec=<optimized out>, reset_sig_count=1) at ./storage/innobase/os/os0event.cc:398

#5  0x0000557147a25238 in srv_monitor_thread () at ./storage/innobase/srv/srv0srv.cc:1672

#6  0x00007fe60a8b4fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486

#7  0x00007fe609bf04cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7fe60405f700 (LWP 18867)):

#0  0x00007fe609b2f4cc in __GI___sigtimedwait (set=set@entry=0x7fe60405ecf0, info=info@entry=0x7fe60405ed70, timeout=timeout@entry=0x0) at ../sysdeps/unix/sysv/linux/sigtimedwait.c:29

#1  0x00007fe609b2f537 in __GI___sigwaitinfo (set=set@entry=0x7fe60405ecf0, info=info@entry=0x7fe60405ed70) at ../sysdeps/unix/sysv/linux/sigwaitinfo.c:25

#2  0x00005571474d1fab in my_sigwait (code=<synthetic pointer>, sig=0x7fe60405ece8, set=0x7fe60405ecf0) at ./include/my_pthread.h:198

#3  signal_hand (arg=arg@entry=0x0) at ./sql/mysqld.cc:3249

#4  0x0000557147c519ba in pfs_spawn_thread (arg=0x55714acba1c8) at ./storage/perfschema/pfs.cc:1862

#5  0x00007fe60a8b4fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486

#6  0x00007fe609bf04cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7fe5fcd90700 (LWP 18848)):

#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38

#1  0x00007fe60a6aaa3a in ?? () from /lib/x86_64-linux-gnu/libaio.so.1

#2  0x000055714799f711 in LinuxAIOHandler::collect (this=0x7fe5fcd8fbe0) at ./storage/innobase/os/os0file.cc:1809

#3  0x000055714799fb45 in LinuxAIOHandler::poll (this=0x7fe5fcd8fbe0, m1=0x7fe5fcd8fc80, m2=0x7fe5fcd8fc88, request=0x7fe5fcd8fc90) at ./storage/innobase/os/os0file.cc:1968

#4  0x00005571479a3e30 in os_aio_linux_handler (request=0x7fe5fcd8fc90, m2=0x7fe5fcd8fc88, m1=0x7fe5fcd8fc80, global_segment=<optimized out>) at /usr/include/c++/8/bits/stl_vector.h:805

#5  os_aio_handler (segment=segment@entry=3, m1=m1@entry=0x7fe5fcd8fc80, m2=m2@entry=0x7fe5fcd8fc88, request=request@entry=0x7fe5fcd8fc90) at ./storage/innobase/os/os0file.cc:5561

#6  0x0000557147aeeef8 in fil_aio_wait (segment=segment@entry=3) at ./storage/innobase/fil/fil0fil.cc:4344

#7  0x0000557147a25eb0 in io_handler_thread (arg=<optimized out>) at ./storage/innobase/srv/srv0start.cc:325

#8  0x00007fe60a8b4fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486

#9  0x00007fe609bf04cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7fe5f5ffb700 (LWP 18853)):

#0  futex_abstimed_wait_cancelable (private=0, abstime=0x7fe5f5fface0, expected=0, futex_word=0x55714abf9f60) at ../sysdeps/unix/sysv/linux/futex-internal.h:205

#1  __pthread_cond_wait_common (abstime=0x7fe5f5fface0, mutex=0x55714abf9f10, cond=0x55714abf9f38) at pthread_cond_wait.c:539

#2  __pthread_cond_timedwait (cond=0x55714abf9f38, mutex=0x55714abf9f10, abstime=abstime@entry=0x7fe5f5fface0) at pthread_cond_wait.c:667

#3  0x00005571479a4e12 in os_event::timed_wait (this=<optimized out>, abstime=0x7fe5f5fface0) at ./storage/innobase/include/sync0types.h:476

#4  0x00005571479a4f61 in os_event::wait_time_low (this=0x55714abf9f00, time_in_usec=<optimized out>, reset_sig_count=1) at ./storage/innobase/os/os0event.cc:398

#5  0x0000557147983b99 in lock_wait_timeout_thread () at ./storage/innobase/lock/lock0wait.cc:543

#6  0x00007fe60a8b4fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486

#7  0x00007fe609bf04cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7fe5f6ffd700 (LWP 18851)):

#0  futex_abstimed_wait_cancelable (private=0, abstime=0x7fe5f6ffcba0, expected=0, futex_word=0x55714aa37094) at ../sysdeps/unix/sysv/linux/futex-internal.h:205

#1  __pthread_cond_wait_common (abstime=0x7fe5f6ffcba0, mutex=0x55714aa37040, cond=0x55714aa37068) at pthread_cond_wait.c:539

#2  __pthread_cond_timedwait (cond=0x55714aa37068, mutex=0x55714aa37040, abstime=abstime@entry=0x7fe5f6ffcba0) at pthread_cond_wait.c:667

#3  0x00005571479a4e12 in os_event::timed_wait (this=<optimized out>, abstime=0x7fe5f6ffcba0) at ./storage/innobase/include/sync0types.h:476

#4  0x00005571479a4f61 in os_event::wait_time_low (this=0x55714aa37030, time_in_usec=<optimized out>, reset_sig_count=2) at ./storage/innobase/os/os0event.cc:398

#5  0x000055714749da5a in pc_sleep_if_needed (cur_time=1561537962842, sig_count=2, next_loop_time=1561537963842) at ./storage/innobase/buf/buf0flu.cc:2640

#6  buf_flush_page_cleaner_coordinator () at ./storage/innobase/buf/buf0flu.cc:3099

#7  0x00007fe60a8b4fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486

#8  0x00007fe609bf04cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7fe5f77fe700 (LWP 18850)):

#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38

#1  0x00007fe60a6aaa3a in ?? () from /lib/x86_64-linux-gnu/libaio.so.1

#2  0x000055714799f711 in LinuxAIOHandler::collect (this=0x7fe5f77fdbe0) at ./storage/innobase/os/os0file.cc:1809

#3  0x000055714799fb45 in LinuxAIOHandler::poll (this=0x7fe5f77fdbe0, m1=0x7fe5f77fdc80, m2=0x7fe5f77fdc88, request=0x7fe5f77fdc90) at ./storage/innobase/os/os0file.cc:1968

#4  0x00005571479a3e30 in os_aio_linux_handler (request=0x7fe5f77fdc90, m2=0x7fe5f77fdc88, m1=0x7fe5f77fdc80, global_segment=<optimized out>) at /usr/include/c++/8/bits/stl_vector.h:805

#5  os_aio_handler (segment=segment@entry=5, m1=m1@entry=0x7fe5f77fdc80, m2=m2@entry=0x7fe5f77fdc88, request=request@entry=0x7fe5f77fdc90) at ./storage/innobase/os/os0file.cc:5561

#6  0x0000557147aeeef8 in fil_aio_wait (segment=segment@entry=5) at ./storage/innobase/fil/fil0fil.cc:4344

#7  0x0000557147a25eb0 in io_handler_thread (arg=<optimized out>) at ./storage/innobase/srv/srv0start.cc:325

#8  0x00007fe60a8b4fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486

#9  0x00007fe609bf04cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7fe5f57fa700 (LWP 18854)):

#0  futex_abstimed_wait_cancelable (private=0, abstime=0x7fe5f57f9c40, expected=0, futex_word=0x55714aa36f40) at ../sysdeps/unix/sysv/linux/futex-internal.h:205

#1  __pthread_cond_wait_common (abstime=0x7fe5f57f9c40, mutex=0x55714aa36ef0, cond=0x55714aa36f18) at pthread_cond_wait.c:539

#2  __pthread_cond_timedwait (cond=0x55714aa36f18, mutex=0x55714aa36ef0, abstime=abstime@entry=0x7fe5f57f9c40) at pthread_cond_wait.c:667

#3  0x00005571479a4e12 in os_event::timed_wait (this=<optimized out>, abstime=0x7fe5f57f9c40) at ./storage/innobase/include/sync0types.h:476

#4  0x00005571479a4f61 in os_event::wait_time_low (this=0x55714aa36ee0, time_in_usec=<optimized out>, reset_sig_count=1) at ./storage/innobase/os/os0event.cc:398

#5  0x0000557147a2186f in srv_error_monitor_thread () at ./storage/innobase/srv/srv0srv.cc:1836

#6  0x00007fe60a8b4fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486

#7  0x00007fe609bf04cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7fe5fdd92700 (LWP 18846)):

#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38

#1  0x00007fe60a6aaa3a in ?? () from /lib/x86_64-linux-gnu/libaio.so.1

#2  0x000055714799f711 in LinuxAIOHandler::collect (this=0x7fe5fdd91be0) at ./storage/innobase/os/os0file.cc:1809

#3  0x000055714799fb45 in LinuxAIOHandler::poll (this=0x7fe5fdd91be0, m1=0x7fe5fdd91c80, m2=0x7fe5fdd91c88, request=0x7fe5fdd91c90) at ./storage/innobase/os/os0file.cc:1968

#4  0x00005571479a3e30 in os_aio_linux_handler (request=0x7fe5fdd91c90, m2=0x7fe5fdd91c88, m1=0x7fe5fdd91c80, global_segment=<optimized out>) at /usr/include/c++/8/bits/stl_vector.h:805

#5  os_aio_handler (segment=segment@entry=1, m1=m1@entry=0x7fe5fdd91c80, m2=m2@entry=0x7fe5fdd91c88, request=request@entry=0x7fe5fdd91c90) at ./storage/innobase/os/os0file.cc:5561

#6  0x0000557147aeeef8 in fil_aio_wait (segment=segment@entry=1) at ./storage/innobase/fil/fil0fil.cc:4344

#7  0x0000557147a25eb0 in io_handler_thread (arg=<optimized out>) at ./storage/innobase/srv/srv0start.cc:325

#8  0x00007fe60a8b4fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486

#9  0x00007fe609bf04cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7fe5db7fe700 (LWP 18865)):

#0  futex_wait_cancelable (private=0, expected=0, futex_word=0x55714aa37100) at ../sysdeps/unix/sysv/linux/futex-internal.h:88

#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x55714aa370b0, cond=0x55714aa370d8) at pthread_cond_wait.c:502

#2  __pthread_cond_wait (cond=cond@entry=0x55714aa370d8, mutex=mutex@entry=0x55714aa370b0) at pthread_cond_wait.c:655

#3  0x00005571479a4ec1 in os_event::wait (this=0x55714aa370a0) at ./storage/innobase/include/sync0types.h:476

#4  os_event::wait_low (this=0x55714aa370a0, reset_sig_count=1) at ./storage/innobase/os/os0event.cc:326

#5  0x0000557147a9b308 in buf_resize_thread () at ./storage/innobase/buf/buf0buf.cc:3149

#6  0x00007fe60a8b4fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486

#7  0x00007fe609bf04cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7fe60517c700 (LWP 18843)):

#0  futex_abstimed_wait_cancelable (private=0, abstime=0x7fe60517bdc0, expected=0, futex_word=0x557148cfd868 <COND_timer+40>) at ../sysdeps/unix/sysv/linux/futex-internal.h:205

#1  __pthread_cond_wait_common (abstime=0x7fe60517bdc0, mutex=0x557148cfd880 <LOCK_timer>, cond=0x557148cfd840 <COND_timer>) at pthread_cond_wait.c:539

#2  __pthread_cond_timedwait (cond=cond@entry=0x557148cfd840 <COND_timer>, mutex=mutex@entry=0x557148cfd880 <LOCK_timer>, abstime=abstime@entry=0x7fe60517bdc0) at pthread_cond_wait.c:667

#3  0x0000557147ca4a6e in inline_mysql_cond_timedwait (that=0x557148cfd840 <COND_timer>, mutex=0x557148cfd880 <LOCK_timer>, src_file=0x557147ec2de8 "/home/buildbot/buildbot/build/mariadb-10.4.7/mysys/thr_timer.c", src_line=292, abstime=0x7fe60517bdc0) at ./include/mysql/psi/mysql_thread.h:1204

#4  timer_handler (arg=arg@entry=0x0) at ./mysys/thr_timer.c:292

#5  0x0000557147c519ba in pfs_spawn_thread (arg=0x55714a911528) at ./storage/perfschema/pfs.cc:1862

#6  0x00007fe60a8b4fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486

#7  0x00007fe609bf04cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7fe6095467c0 (LWP 18842)):

#0  __pthread_kill (threadid=<optimized out>, signo=signo@entry=6) at ../sysdeps/unix/sysv/linux/pthread_kill.c:56

#1  0x0000557147ca0217 in my_write_core (sig=sig@entry=6) at ./mysys/stacktrace.c:481

#2  0x000055714779e2e8 in handle_fatal_signal (sig=6) at ./sql/signal_handler.cc:343

#3  <signal handler called>

#4  0x00007fe609be8037 in __GI___select (nfds=nfds@entry=0, readfds=readfds@entry=0x0, writefds=writefds@entry=0x0, exceptfds=exceptfds@entry=0x0, timeout=timeout@entry=0x7ffdc1219f10) at ../sysdeps/unix/sysv/linux/select.c:41

#5  0x0000557147c9deff in my_sleep (m_seconds=m_seconds@entry=1000) at ./mysys/my_sleep.c:29

#6  0x00005571474dbdda in close_connections () at ./sql/mysqld.cc:1798

#7  mysqld_main (argc=<optimized out>, argv=<optimized out>) at ./sql/mysqld.cc:5915

#8  0x00007fe609b1b09b in __libc_start_main (main=0x5571474b68e0 <main(int, char**)>, argc=27, argv=0x7ffdc121a178, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffdc121a168) at ../csu/libc-start.c:308

#9  0x00005571474ced3a in _start () at ./sql/mysqld.cc:4671