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#1 2020-08-31 20:28:14

Wild Penguin
Member
Registered: 2015-03-19
Posts: 186

[IGIVEUP]KMail: Constant Akonadi/mysqld crashes

Hi,

After quite recently, I've got this annoyance of KMail reporting suddenly (while reading / organizing my email) the following: Akonadi is not running and needs to be restarted. I also get notifications in the notification area that XXXX mail folder (both local and IMAP) are broken. Obviously this interrupts my email reading, although I can restart Akonadi from the KMail button

(EDIT: Added emphasis and some punctuation, and also want to note my Plasma is in Finnish, and I don't know the exact English wording of the mentioned notifications).

I seem to have 19 crashes since 27.8.2020 (none before, or for at least many months). 13 crashes has happened today, which, needless to say, makes reading email with KMail quite a chore. These counts are according to syslog. I may be able to read emails for 30 consecutive seconds (if I'm lucky), then the crash will happen. No crashes happens if KMail is not running (at least such that I'm aware of; of course some crash might have occurred without me realizing it in case it didn't cause an active message / notification in the desktop).

Any ideas what might have caused this in the first place or how to get mariadb/mysqld/Akonadi/Kmail behave, are welcome.

Whenever this happens, I get this in syslog (seems I have 18 more examples, which I will provide in case they are useful :-) ):

elo 31 23:10:07 ArkkiVille systemd-coredump[79265]: Process 71515 (mysqld) of user 1000 dumped core.
                                                    
                                                    Stack trace of thread 71519:
                                                    #0  0x00007f745ba84615 raise (libc.so.6 + 0x3d615)
                                                    #1  0x00007f745ba6d912 abort (libc.so.6 + 0x26912)
                                                    #2  0x000055671ee24f78 n/a (mariadbd + 0x614f78)
                                                    #3  0x000055671ee08d9e n/a (mariadbd + 0x5f8d9e)
                                                    #4  0x000055671f488911 n/a (mariadbd + 0xc78911)
                                                    #5  0x000055671f489d75 n/a (mariadbd + 0xc79d75)
                                                    #6  0x000055671f48a3b7 n/a (mariadbd + 0xc7a3b7)
                                                    #7  0x000055671f574353 n/a (mariadbd + 0xd64353)
                                                    #8  0x000055671f574f5f n/a (mariadbd + 0xd64f5f)
                                                    #9  0x000055671f575665 n/a (mariadbd + 0xd65665)
                                                    #10 0x000055671f575d6d n/a (mariadbd + 0xd65d6d)
                                                    #11 0x000055671ee2ffd6 n/a (mariadbd + 0x61ffd6)
                                                    #12 0x00007f745bf5e3e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #13 0x00007f745bb47293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 79045:
                                                    #0  0x00007f745bf64cf8 pthread_cond_clockwait (libpthread.so.0 + 0xfcf8)
                                                    #1  0x000055671f5fd81a _ZN5tpool19thread_pool_generic14wait_for_tasksERSt11unique_lockISt5mutexEPNS_11worker_dataE (mariadbd + 0xded81a)
                                                    #2  0x000055671f5fdc3f _ZN5tpool19thread_pool_generic8get_taskEPNS_11worker_dataEPPNS_4taskE (mariadbd + 0xdedc3f)
                                                    #3  0x000055671f5ff28e _ZN5tpool19thread_pool_generic11worker_mainEPNS_11worker_dataE (mariadbd + 0xdef28e)
                                                    #4  0x00007f745be3fc24 execute_native_thread_routine (libstdc++.so.6 + 0xcfc24)
                                                    #5  0x00007f745bf5e3e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #6  0x00007f745bb47293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 71516:
                                                    #0  0x00007f745bf649c8 pthread_cond_timedwait@@GLIBC_2.3.2 (libpthread.so.0 + 0xf9c8)
                                                    #1  0x000055671f6625eb n/a (mariadbd + 0xe525eb)
                                                    #2  0x00007f745bf5e3e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #3  0x00007f745bb47293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 71517:
                                                    #0  0x00007f745bf649c8 pthread_cond_timedwait@@GLIBC_2.3.2 (libpthread.so.0 + 0xf9c8)
                                                    #1  0x000055671f340f5b n/a (mariadbd + 0xb30f5b)
                                                    #2  0x000055671f3395a6 n/a (mariadbd + 0xb295a6)
                                                    #3  0x00007f745bf5e3e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #4  0x00007f745bb47293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 71527:
                                                    #0  0x00007f745bf646a2 pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0 + 0xf6a2)
                                                    #1  0x000055671eea32cc handle_slave_background (mariadbd + 0x6932cc)
                                                    #2  0x000055671f3a1708 n/a (mariadbd + 0xb91708)
                                                    #3  0x00007f745bf5e3e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #4  0x00007f745bb47293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 71574:
                                                    #0  0x00007f745bb3c46f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055671f2e63dc vio_io_wait (mariadbd + 0xad63dc)
                                                    #2  0x000055671f2e6551 vio_socket_io_wait (mariadbd + 0xad6551)
                                                    #3  0x000055671f2e6636 vio_read (mariadbd + 0xad6636)
                                                    #4  0x000055671f268095 n/a (mariadbd + 0xa58095)
                                                    #5  0x000055671f269190 my_net_read_packet_reallen (mariadbd + 0xa59190)
                                                    #6  0x000055671f26928e my_net_read_packet (mariadbd + 0xa5928e)
                                                    #7  0x000055671ef56030 _Z10do_commandP3THD (mariadbd + 0x746030)
                                                    #8  0x000055671f0454ec _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8354ec)
                                                    #9  0x000055671f045776 handle_one_connection (mariadbd + 0x835776)
                                                    #10 0x000055671f3a1708 n/a (mariadbd + 0xb91708)
                                                    #11 0x00007f745bf5e3e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #12 0x00007f745bb47293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 71515:
                                                    #0  0x00007f745bb3c46f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055671ee8db48 _Z26handle_connections_socketsv (mariadbd + 0x67db48)
                                                    #2  0x000055671ee8e9a9 _Z11mysqld_mainiPPc (mariadbd + 0x67e9a9)
                                                    #3  0x00007f745ba6f152 __libc_start_main (libc.so.6 + 0x28152)
                                                    #4  0x000055671ee82c7e _start (mariadbd + 0x672c7e)
                                                    
                                                    Stack trace of thread 71528:
                                                    #0  0x00007f745bb3c46f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055671f2e63dc vio_io_wait (mariadbd + 0xad63dc)
                                                    #2  0x000055671f2e6551 vio_socket_io_wait (mariadbd + 0xad6551)
                                                    #3  0x000055671f2e6636 vio_read (mariadbd + 0xad6636)
                                                    #4  0x000055671f268095 n/a (mariadbd + 0xa58095)
                                                    #5  0x000055671f269190 my_net_read_packet_reallen (mariadbd + 0xa59190)
                                                    #6  0x000055671f26928e my_net_read_packet (mariadbd + 0xa5928e)
                                                    #7  0x000055671ef56030 _Z10do_commandP3THD (mariadbd + 0x746030)
                                                    #8  0x000055671f0454ec _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8354ec)
                                                    #9  0x000055671f045776 handle_one_connection (mariadbd + 0x835776)
                                                    #10 0x000055671f3a1708 n/a (mariadbd + 0xb91708)
                                                    #11 0x00007f745bf5e3e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #12 0x00007f745bb47293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 71526:
                                                    #0  0x00007f745ba85402 __sigtimedwait (libc.so.6 + 0x3e402)
                                                    #1  0x000055671ee857a4 signal_hand (mariadbd + 0x6757a4)
                                                    #2  0x000055671f3a1708 n/a (mariadbd + 0xb91708)
                                                    #3  0x00007f745bf5e3e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #4  0x00007f745bb47293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 78983:
                                                    #0  0x00007f745bb3c46f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055671f2e63dc vio_io_wait (mariadbd + 0xad63dc)
                                                    #2  0x000055671f2e6551 vio_socket_io_wait (mariadbd + 0xad6551)
                                                    #3  0x000055671f2e6636 vio_read (mariadbd + 0xad6636)
                                                    #4  0x000055671f268095 n/a (mariadbd + 0xa58095)
                                                    #5  0x000055671f269190 my_net_read_packet_reallen (mariadbd + 0xa59190)
                                                    #6  0x000055671f26928e my_net_read_packet (mariadbd + 0xa5928e)
                                                    #7  0x000055671ef56030 _Z10do_commandP3THD (mariadbd + 0x746030)
                                                    #8  0x000055671f0454ec _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8354ec)
                                                    #9  0x000055671f045776 handle_one_connection (mariadbd + 0x835776)
                                                    #10 0x000055671f3a1708 n/a (mariadbd + 0xb91708)
                                                    #11 0x00007f745bf5e3e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #12 0x00007f745bb47293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 78977:
                                                    #0  0x00007f745bb3c46f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055671f2e63dc vio_io_wait (mariadbd + 0xad63dc)
                                                    #2  0x000055671f2e6551 vio_socket_io_wait (mariadbd + 0xad6551)
                                                    #3  0x000055671f2e6636 vio_read (mariadbd + 0xad6636)
                                                    #4  0x000055671f268095 n/a (mariadbd + 0xa58095)
                                                    #5  0x000055671f269190 my_net_read_packet_reallen (mariadbd + 0xa59190)
                                                    #6  0x000055671f26928e my_net_read_packet (mariadbd + 0xa5928e)
                                                    #7  0x000055671ef56030 _Z10do_commandP3THD (mariadbd + 0x746030)
                                                    #8  0x000055671f0454ec _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8354ec)
                                                    #9  0x000055671f045776 handle_one_connection (mariadbd + 0x835776)
                                                    #10 0x000055671f3a1708 n/a (mariadbd + 0xb91708)
                                                    #11 0x00007f745bf5e3e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #12 0x00007f745bb47293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 78981:
                                                    #0  0x00007f745bf64cf8 pthread_cond_clockwait (libpthread.so.0 + 0xfcf8)
                                                    #1  0x000055671f5fd81a _ZN5tpool19thread_pool_generic14wait_for_tasksERSt11unique_lockISt5mutexEPNS_11worker_dataE (mariadbd + 0xded81a)
                                                    #2  0x000055671f5fdc3f _ZN5tpool19thread_pool_generic8get_taskEPNS_11worker_dataEPPNS_4taskE (mariadbd + 0xdedc3f)
                                                    #3  0x000055671f5ff28e _ZN5tpool19thread_pool_generic11worker_mainEPNS_11worker_dataE (mariadbd + 0xdef28e)
                                                    #4  0x00007f745be3fc24 execute_native_thread_routine (libstdc++.so.6 + 0xcfc24)
                                                    #5  0x00007f745bf5e3e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #6  0x00007f745bb47293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 79038:
                                                    #0  0x00007f745bf64cf8 pthread_cond_clockwait (libpthread.so.0 + 0xfcf8)
                                                    #1  0x000055671f5fd81a _ZN5tpool19thread_pool_generic14wait_for_tasksERSt11unique_lockISt5mutexEPNS_11worker_dataE (mariadbd + 0xded81a)
                                                    #2  0x000055671f5fdc3f _ZN5tpool19thread_pool_generic8get_taskEPNS_11worker_dataEPPNS_4taskE (mariadbd + 0xdedc3f)
                                                    #3  0x000055671f5ff28e _ZN5tpool19thread_pool_generic11worker_mainEPNS_11worker_dataE (mariadbd + 0xdef28e)
                                                    #4  0x00007f745be3fc24 execute_native_thread_routine (libstdc++.so.6 + 0xcfc24)
                                                    #5  0x00007f745bf5e3e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #6  0x00007f745bb47293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 79041:
                                                    #0  0x00007f745bb3c46f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055671f2e63dc vio_io_wait (mariadbd + 0xad63dc)
                                                    #2  0x000055671f2e6551 vio_socket_io_wait (mariadbd + 0xad6551)
                                                    #3  0x000055671f2e6636 vio_read (mariadbd + 0xad6636)
                                                    #4  0x000055671f268095 n/a (mariadbd + 0xa58095)
                                                    #5  0x000055671f269190 my_net_read_packet_reallen (mariadbd + 0xa59190)
                                                    #6  0x000055671f26928e my_net_read_packet (mariadbd + 0xa5928e)
                                                    #7  0x000055671ef56030 _Z10do_commandP3THD (mariadbd + 0x746030)
                                                    #8  0x000055671f0454ec _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8354ec)
                                                    #9  0x000055671f045776 handle_one_connection (mariadbd + 0x835776)
                                                    #10 0x000055671f3a1708 n/a (mariadbd + 0xb91708)
                                                    #11 0x00007f745bf5e3e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #12 0x00007f745bb47293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 78982:
                                                    #0  0x00007f745bf64cf8 pthread_cond_clockwait (libpthread.so.0 + 0xfcf8)
                                                    #1  0x000055671f5fd81a _ZN5tpool19thread_pool_generic14wait_for_tasksERSt11unique_lockISt5mutexEPNS_11worker_dataE (mariadbd + 0xded81a)
                                                    #2  0x000055671f5fdc3f _ZN5tpool19thread_pool_generic8get_taskEPNS_11worker_dataEPPNS_4taskE (mariadbd + 0xdedc3f)
                                                    #3  0x000055671f5ff28e _ZN5tpool19thread_pool_generic11worker_mainEPNS_11worker_dataE (mariadbd + 0xdef28e)
                                                    #4  0x00007f745be3fc24 execute_native_thread_routine (libstdc++.so.6 + 0xcfc24)
                                                    #5  0x00007f745bf5e3e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #6  0x00007f745bb47293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 78980:
                                                    #0  0x00007f745bf64cf8 pthread_cond_clockwait (libpthread.so.0 + 0xfcf8)
                                                    #1  0x000055671f5fd81a _ZN5tpool19thread_pool_generic14wait_for_tasksERSt11unique_lockISt5mutexEPNS_11worker_dataE (mariadbd + 0xded81a)
                                                    #2  0x000055671f5fdc3f _ZN5tpool19thread_pool_generic8get_taskEPNS_11worker_dataEPPNS_4taskE (mariadbd + 0xdedc3f)
                                                    #3  0x000055671f5ff28e _ZN5tpool19thread_pool_generic11worker_mainEPNS_11worker_dataE (mariadbd + 0xdef28e)
                                                    #4  0x00007f745be3fc24 execute_native_thread_routine (libstdc++.so.6 + 0xcfc24)
                                                    #5  0x00007f745bf5e3e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #6  0x00007f745bb47293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 79054:
                                                    #0  0x00007f745bb3c46f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055671f2e63dc vio_io_wait (mariadbd + 0xad63dc)
                                                    #2  0x000055671f2e6551 vio_socket_io_wait (mariadbd + 0xad6551)
                                                    #3  0x000055671f2e6636 vio_read (mariadbd + 0xad6636)
                                                    #4  0x000055671f268095 n/a (mariadbd + 0xa58095)
                                                    #5  0x000055671f269190 my_net_read_packet_reallen (mariadbd + 0xa59190)
                                                    #6  0x000055671f26928e my_net_read_packet (mariadbd + 0xa5928e)
                                                    #7  0x000055671ef56030 _Z10do_commandP3THD (mariadbd + 0x746030)
                                                    #8  0x000055671f0454ec _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8354ec)
                                                    #9  0x000055671f045776 handle_one_connection (mariadbd + 0x835776)
                                                    #10 0x000055671f3a1708 n/a (mariadbd + 0xb91708)
                                                    #11 0x00007f745bf5e3e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #12 0x00007f745bb47293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 79037:
                                                    #0  0x00007f745bb41d5d syscall (libc.so.6 + 0xfad5d)
                                                    #1  0x000055671f497194 n/a (mariadbd + 0xc87194)
                                                    #2  0x000055671f489f1e n/a (mariadbd + 0xc79f1e)
                                                    #3  0x000055671f506f48 n/a (mariadbd + 0xcf6f48)
                                                    #4  0x000055671f507fd8 n/a (mariadbd + 0xcf7fd8)
                                                    #5  0x000055671f5ff5cb _ZN5tpool19thread_pool_generic13timer_generic7executeEPv (mariadbd + 0xdef5cb)
                                                    #6  0x000055671f6005f2 _ZN5tpool4task7executeEv (mariadbd + 0xdf05f2)
                                                    #7  0x000055671f5ff27f _ZN5tpool19thread_pool_generic11worker_mainEPNS_11worker_dataE (mariadbd + 0xdef27f)
                                                    #8  0x00007f745be3fc24 execute_native_thread_routine (libstdc++.so.6 + 0xcfc24)
                                                    #9  0x00007f745bf5e3e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #10 0x00007f745bb47293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 79039:
                                                    #0  0x00007f745bb3c46f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055671f2e63dc vio_io_wait (mariadbd + 0xad63dc)
                                                    #2  0x000055671f2e6551 vio_socket_io_wait (mariadbd + 0xad6551)
                                                    #3  0x000055671f2e6636 vio_read (mariadbd + 0xad6636)
                                                    #4  0x000055671f268095 n/a (mariadbd + 0xa58095)
                                                    #5  0x000055671f269190 my_net_read_packet_reallen (mariadbd + 0xa59190)
                                                    #6  0x000055671f26928e my_net_read_packet (mariadbd + 0xa5928e)
                                                    #7  0x000055671ef56030 _Z10do_commandP3THD (mariadbd + 0x746030)
                                                    #8  0x000055671f0454ec _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8354ec)
                                                    #9  0x000055671f045776 handle_one_connection (mariadbd + 0x835776)
                                                    #10 0x000055671f3a1708 n/a (mariadbd + 0xb91708)
                                                    #11 0x00007f745bf5e3e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #12 0x00007f745bb47293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 79048:
                                                    #0  0x00007f745bb3c46f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055671f2e63dc vio_io_wait (mariadbd + 0xad63dc)
                                                    #2  0x000055671f2e6551 vio_socket_io_wait (mariadbd + 0xad6551)
                                                    #3  0x000055671f2e6636 vio_read (mariadbd + 0xad6636)
                                                    #4  0x000055671f268095 n/a (mariadbd + 0xa58095)
                                                    #5  0x000055671f269190 my_net_read_packet_reallen (mariadbd + 0xa59190)
                                                    #6  0x000055671f26928e my_net_read_packet (mariadbd + 0xa5928e)
                                                    #7  0x000055671ef56030 _Z10do_commandP3THD (mariadbd + 0x746030)
                                                    #8  0x000055671f0454ec _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8354ec)
                                                    #9  0x000055671f045776 handle_one_connection (mariadbd + 0x835776)
                                                    #10 0x000055671f3a1708 n/a (mariadbd + 0xb91708)
                                                    #11 0x00007f745bf5e3e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #12 0x00007f745bb47293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 71518:
                                                    #0  0x00007f745bb41d5d syscall (libc.so.6 + 0xfad5d)
                                                    #1  0x00007f745bf92187 n/a (libaio.so.1 + 0x1187)
                                                    #2  0x000055671f600c3a _ZN5tpool9aio_linux23getevent_thread_routineEPS0_ (mariadbd + 0xdf0c3a)
                                                    #3  0x00007f745be3fc24 execute_native_thread_routine (libstdc++.so.6 + 0xcfc24)
                                                    #4  0x00007f745bf5e3e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #5  0x00007f745bb47293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 71530:
                                                    #0  0x00007f745bb3c46f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055671f2e63dc vio_io_wait (mariadbd + 0xad63dc)
                                                    #2  0x000055671f2e6551 vio_socket_io_wait (mariadbd + 0xad6551)
                                                    #3  0x000055671f2e6636 vio_read (mariadbd + 0xad6636)
                                                    #4  0x000055671f268095 n/a (mariadbd + 0xa58095)
                                                    #5  0x000055671f269190 my_net_read_packet_reallen (mariadbd + 0xa59190)
                                                    #6  0x000055671f26928e my_net_read_packet (mariadbd + 0xa5928e)
                                                    #7  0x000055671ef56030 _Z10do_commandP3THD (mariadbd + 0x746030)
                                                    #8  0x000055671f0454ec _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8354ec)
                                                    #9  0x000055671f045776 handle_one_connection (mariadbd + 0x835776)
                                                    #10 0x000055671f3a1708 n/a (mariadbd + 0xb91708)
                                                    #11 0x00007f745bf5e3e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #12 0x00007f745bb47293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 71537:
                                                    #0  0x00007f745bb3c46f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055671f2e63dc vio_io_wait (mariadbd + 0xad63dc)
                                                    #2  0x000055671f2e6551 vio_socket_io_wait (mariadbd + 0xad6551)
                                                    #3  0x000055671f2e6636 vio_read (mariadbd + 0xad6636)
                                                    #4  0x000055671f268095 n/a (mariadbd + 0xa58095)
                                                    #5  0x000055671f269190 my_net_read_packet_reallen (mariadbd + 0xa59190)
                                                    #6  0x000055671f26928e my_net_read_packet (mariadbd + 0xa5928e)
                                                    #7  0x000055671ef56030 _Z10do_commandP3THD (mariadbd + 0x746030)
                                                    #8  0x000055671f0454ec _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8354ec)
                                                    #9  0x000055671f045776 handle_one_connection (mariadbd + 0x835776)
                                                    #10 0x000055671f3a1708 n/a (mariadbd + 0xb91708)
                                                    #11 0x00007f745bf5e3e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #12 0x00007f745bb47293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 71877:
                                                    #0  0x00007f745bb3c46f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055671f2e63dc vio_io_wait (mariadbd + 0xad63dc)
                                                    #2  0x000055671f2e6551 vio_socket_io_wait (mariadbd + 0xad6551)
                                                    #3  0x000055671f2e6636 vio_read (mariadbd + 0xad6636)
                                                    #4  0x000055671f268095 n/a (mariadbd + 0xa58095)
                                                    #5  0x000055671f269190 my_net_read_packet_reallen (mariadbd + 0xa59190)
                                                    #6  0x000055671f26928e my_net_read_packet (mariadbd + 0xa5928e)
                                                    #7  0x000055671ef56030 _Z10do_commandP3THD (mariadbd + 0x746030)
                                                    #8  0x000055671f0454ec _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8354ec)
                                                    #9  0x000055671f045776 handle_one_connection (mariadbd + 0x835776)
                                                    #10 0x000055671f3a1708 n/a (mariadbd + 0xb91708)
                                                    #11 0x00007f745bf5e3e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #12 0x00007f745bb47293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 77720:
                                                    #0  0x00007f745bf64cf8 pthread_cond_clockwait (libpthread.so.0 + 0xfcf8)
                                                    #1  0x000055671f5fd81a _ZN5tpool19thread_pool_generic14wait_for_tasksERSt11unique_lockISt5mutexEPNS_11worker_dataE (mariadbd + 0xded81a)
                                                    #2  0x000055671f5fdc3f _ZN5tpool19thread_pool_generic8get_taskEPNS_11worker_dataEPPNS_4taskE (mariadbd + 0xdedc3f)
                                                    #3  0x000055671f5ff28e _ZN5tpool19thread_pool_generic11worker_mainEPNS_11worker_dataE (mariadbd + 0xdef28e)
                                                    #4  0x00007f745be3fc24 execute_native_thread_routine (libstdc++.so.6 + 0xcfc24)
                                                    #5  0x00007f745bf5e3e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #6  0x00007f745bb47293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 74238:
                                                    #0  0x00007f745bb3c46f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055671f2e63dc vio_io_wait (mariadbd + 0xad63dc)
                                                    #2  0x000055671f2e6551 vio_socket_io_wait (mariadbd + 0xad6551)
                                                    #3  0x000055671f2e6636 vio_read (mariadbd + 0xad6636)
                                                    #4  0x000055671f268095 n/a (mariadbd + 0xa58095)
                                                    #5  0x000055671f269190 my_net_read_packet_reallen (mariadbd + 0xa59190)
                                                    #6  0x000055671f26928e my_net_read_packet (mariadbd + 0xa5928e)
                                                    #7  0x000055671ef56030 _Z10do_commandP3THD (mariadbd + 0x746030)
                                                    #8  0x000055671f0454ec _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8354ec)
                                                    #9  0x000055671f045776 handle_one_connection (mariadbd + 0x835776)
                                                    #10 0x000055671f3a1708 n/a (mariadbd + 0xb91708)
                                                    #11 0x00007f745bf5e3e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #12 0x00007f745bb47293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 78978:
                                                    #0  0x00007f745bb3c46f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055671f2e63dc vio_io_wait (mariadbd + 0xad63dc)
                                                    #2  0x000055671f2e6551 vio_socket_io_wait (mariadbd + 0xad6551)
                                                    #3  0x000055671f2e6636 vio_read (mariadbd + 0xad6636)
                                                    #4  0x000055671f268095 n/a (mariadbd + 0xa58095)
                                                    #5  0x000055671f269190 my_net_read_packet_reallen (mariadbd + 0xa59190)
                                                    #6  0x000055671f26928e my_net_read_packet (mariadbd + 0xa5928e)
                                                    #7  0x000055671ef56030 _Z10do_commandP3THD (mariadbd + 0x746030)
                                                    #8  0x000055671f0454ec _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8354ec)
                                                    #9  0x000055671f045776 handle_one_connection (mariadbd + 0x835776)
                                                    #10 0x000055671f3a1708 n/a (mariadbd + 0xb91708)
                                                    #11 0x00007f745bf5e3e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #12 0x00007f745bb47293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 79040:
                                                    #0  0x00007f745bb3c46f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055671f2e63dc vio_io_wait (mariadbd + 0xad63dc)
                                                    #2  0x000055671f2e6551 vio_socket_io_wait (mariadbd + 0xad6551)
                                                    #3  0x000055671f2e6636 vio_read (mariadbd + 0xad6636)
                                                    #4  0x000055671f268095 n/a (mariadbd + 0xa58095)
                                                    #5  0x000055671f269190 my_net_read_packet_reallen (mariadbd + 0xa59190)
                                                    #6  0x000055671f26928e my_net_read_packet (mariadbd + 0xa5928e)
                                                    #7  0x000055671ef56030 _Z10do_commandP3THD (mariadbd + 0x746030)
                                                    #8  0x000055671f0454ec _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8354ec)
                                                    #9  0x000055671f045776 handle_one_connection (mariadbd + 0x835776)
                                                    #10 0x000055671f3a1708 n/a (mariadbd + 0xb91708)
                                                    #11 0x00007f745bf5e3e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #12 0x00007f745bb47293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 79036:
                                                    #0  0x00007f745bb3c46f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055671f2e63dc vio_io_wait (mariadbd + 0xad63dc)
                                                    #2  0x000055671f2e6551 vio_socket_io_wait (mariadbd + 0xad6551)
                                                    #3  0x000055671f2e6636 vio_read (mariadbd + 0xad6636)
                                                    #4  0x000055671f268095 n/a (mariadbd + 0xa58095)
                                                    #5  0x000055671f269190 my_net_read_packet_reallen (mariadbd + 0xa59190)
                                                    #6  0x000055671f26928e my_net_read_packet (mariadbd + 0xa5928e)
                                                    #7  0x000055671ef56030 _Z10do_commandP3THD (mariadbd + 0x746030)
                                                    #8  0x000055671f0454ec _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8354ec)
                                                    #9  0x000055671f045776 handle_one_connection (mariadbd + 0x835776)
                                                    #10 0x000055671f3a1708 n/a (mariadbd + 0xb91708)
                                                    #11 0x00007f745bf5e3e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #12 0x00007f745bb47293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 79042:
                                                    #0  0x00007f745bb3c46f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055671f2e63dc vio_io_wait (mariadbd + 0xad63dc)
                                                    #2  0x000055671f2e6551 vio_socket_io_wait (mariadbd + 0xad6551)
                                                    #3  0x000055671f2e6636 vio_read (mariadbd + 0xad6636)
                                                    #4  0x000055671f268095 n/a (mariadbd + 0xa58095)
                                                    #5  0x000055671f269190 my_net_read_packet_reallen (mariadbd + 0xa59190)
                                                    #6  0x000055671f26928e my_net_read_packet (mariadbd + 0xa5928e)
                                                    #7  0x000055671ef56030 _Z10do_commandP3THD (mariadbd + 0x746030)
                                                    #8  0x000055671f0454ec _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8354ec)
                                                    #9  0x000055671f045776 handle_one_connection (mariadbd + 0x835776)
                                                    #10 0x000055671f3a1708 n/a (mariadbd + 0xb91708)
                                                    #11 0x00007f745bf5e3e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #12 0x00007f745bb47293 __clone (libc.so.6 + 0x100293)
elo 31 23:10:07 ArkkiVille systemd[1]: systemd-coredump@1-79264-0.service: Succeeded.

Cheers!

Last edited by Wild Penguin (2020-09-30 14:40:06)

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#2 2020-09-01 06:39:11

d_fajardo
Member
Registered: 2017-07-28
Posts: 937

Re: [IGIVEUP]KMail: Constant Akonadi/mysqld crashes

There was a mariadb update recently and during the update pacman issued a notice to run mariadb_upgrade. Perhaps you need to do the same?
What is the output of # systemctl status mariadb.service?

Last edited by d_fajardo (2020-09-01 06:41:53)

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#3 2020-09-01 08:35:34

nl6720
Wiki Admin
Registered: 2016-07-02
Posts: 244

Re: [IGIVEUP]KMail: Constant Akonadi/mysqld crashes

Wild Penguin wrote:
Process 71515 (mysqld) of user 1000

This is a per-user MariaDB instance (Akonadi's default), so mariadb.service is not relevant here.

Try the solution provided by arojas in https://bugs.archlinux.org/task/67668#comment192157 .

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#4 2020-09-01 09:02:34

Wild Penguin
Member
Registered: 2015-03-19
Posts: 186

Re: [IGIVEUP]KMail: Constant Akonadi/mysqld crashes

Thanks for the suggestion, nl6720!

I tried that command - and the result was that mysqld crashed! So the database upgrade obviously failed:

$ mariadb-upgrade -S /run/user/1000/akonadi/mysql.socket
Phase 1/7: Checking and upgrading mysql database
Processing databases
mysql
mysql.column_stats                                 OK
mysql.columns_priv                                 OK
mysql.db                                           OK
mysql.event                                        OK
mysql.func                                         OK
mysql.gtid_slave_pos                               OK
mysql.help_category                                OK
mysql.help_keyword                                 OK
mysql.help_relation                                OK
mysql.help_topic                                   OK
mysql.host                                         OK
mysql.index_stats                                  OK
mysql.innodb_index_stats                           OK
mysql.innodb_table_stats                           OK
mysql.plugin                                       OK
mysql.proc                                         OK
mysql.procs_priv                                   OK
mysql.proxies_priv                                 OK
mysql.roles_mapping                                OK
mysql.servers                                      OK
mysql.table_stats                                  OK
mysql.tables_priv                                  OK
mysql.time_zone                                    OK
mysql.time_zone_leap_second                        OK
mysql.time_zone_name                               OK
mysql.time_zone_transition                         OK
mysql.time_zone_transition_type                    OK
mysql.user                                         OK
Phase 2/7: Installing used storage engines... Skipped
Phase 3/7: Fixing views
Phase 4/7: Running 'mysql_fix_privilege_tables'
ERROR 2013 (HY000) at line 693: Lost connection to MySQL server during query
ERROR 2006 (HY000) at line 694: MySQL server has gone away
ERROR 2006 (HY000) at line 695: MySQL server has gone away
ERROR 2006 (HY000) at line 705: MySQL server has gone away
ERROR 2006 (HY000) at line 706: MySQL server has gone away
ERROR 2006 (HY000) at line 731: MySQL server has gone away
ERROR 2006 (HY000) at line 732: MySQL server has gone away
ERROR 2006 (HY000) at line 746: MySQL server has gone away
ERROR 2006 (HY000) at line 747: MySQL server has gone away
ERROR 2006 (HY000) at line 748: MySQL server has gone away
ERROR 2006 (HY000) at line 749: MySQL server has gone away
ERROR 2006 (HY000) at line 750: MySQL server has gone away
ERROR 2006 (HY000) at line 751: MySQL server has gone away
ERROR 2006 (HY000) at line 752: MySQL server has gone away
ERROR 2006 (HY000) at line 753: MySQL server has gone away
ERROR 2006 (HY000) at line 754: MySQL server has gone away
ERROR 2006 (HY000) at line 755: MySQL server has gone away
ERROR 2006 (HY000) at line 756: MySQL server has gone away
ERROR 2006 (HY000) at line 763: MySQL server has gone away
ERROR 2006 (HY000) at line 764: MySQL server has gone away
ERROR 2006 (HY000) at line 765: MySQL server has gone away
ERROR 2006 (HY000) at line 766: MySQL server has gone away
ERROR 2006 (HY000) at line 767: MySQL server has gone away
ERROR 2006 (HY000) at line 768: MySQL server has gone away
ERROR 2006 (HY000) at line 769: MySQL server has gone away
ERROR 2006 (HY000) at line 770: MySQL server has gone away
ERROR 2006 (HY000) at line 771: MySQL server has gone away
ERROR 2006 (HY000) at line 772: MySQL server has gone away
ERROR 2006 (HY000) at line 773: MySQL server has gone away
ERROR 2006 (HY000) at line 774: MySQL server has gone away
ERROR 2006 (HY000) at line 775: MySQL server has gone away
ERROR 2006 (HY000) at line 776: MySQL server has gone away
ERROR 2006 (HY000) at line 777: MySQL server has gone away
ERROR 2006 (HY000) at line 778: MySQL server has gone away
ERROR 2006 (HY000) at line 779: MySQL server has gone away
ERROR 2006 (HY000) at line 780: MySQL server has gone away
ERROR 2006 (HY000) at line 781: MySQL server has gone away
ERROR 2006 (HY000) at line 782: MySQL server has gone away
ERROR 2006 (HY000) at line 783: MySQL server has gone away
ERROR 2006 (HY000) at line 784: MySQL server has gone away
ERROR 2006 (HY000) at line 785: MySQL server has gone away
ERROR 2006 (HY000) at line 786: MySQL server has gone away
ERROR 2006 (HY000) at line 787: MySQL server has gone away
ERROR 2006 (HY000) at line 788: MySQL server has gone away
ERROR 2006 (HY000) at line 789: MySQL server has gone away
ERROR 2006 (HY000) at line 790: MySQL server has gone away
ERROR 2006 (HY000) at line 791: MySQL server has gone away
ERROR 2006 (HY000) at line 792: MySQL server has gone away
ERROR 2006 (HY000) at line 793: MySQL server has gone away
FATAL ERROR: Upgrade failed

Also, I got the similar core dump in syslog as before (which I will omit for now to not clutter this thread, but it is still in there. In case someone is interested, I can post it).

But, now I know of  a bug report (I tried to search for one, but didn't find the right search words - since I didn't know what component is the actual culprit). I will investigate this a bit and comment there in case I have some useful input.

A nasty bug indeed - makes using KMail almost impossible, and apparently has caused data loss for others...

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#5 2020-09-01 10:16:16

V1del
Forum Moderator
Registered: 2012-10-16
Posts: 10,816

Re: [IGIVEUP]KMail: Constant Akonadi/mysqld crashes

Works fine here, and eyeballing what we see from the stack trace, if you didn't apply your microcode updates yet you should do so, as I've seen similar stack traces with buggy CPU instructions.

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#6 2020-09-01 18:49:45

Wild Penguin
Member
Registered: 2015-03-19
Posts: 186

Re: [IGIVEUP]KMail: Constant Akonadi/mysqld crashes

V1del wrote:

Works fine here, and eyeballing what we see from the stack trace, if you didn't apply your microcode updates yet you should do so, as I've seen similar stack traces with buggy CPU instructions.

Oops! I though I had updated the microcode. I had it only installed (probably forgot to do some configuration after it got reset at an earlier point). Thanks!

After upgrading the microcode (well, adjusting ReFind configuration and rebooting):

$ journalctl -b0 | grep -i microcode
syys 01 21:33:11 ArkkiVille kernel: microcode: microcode updated early to revision 0x28, date = 2019-11-12
syys 01 21:33:11 ArkkiVille kernel: SRBDS: Mitigation: Microcode
syys 01 21:33:11 ArkkiVille kernel: microcode: sig=0x306c3, pf=0x2, revision=0x28
syys 01 21:33:11 ArkkiVille kernel: microcode: Microcode Update Driver: v2.2.

I could now run mariadb-upgrade. Seems some part of KDE/Plasma/Akonadi was in an awry state, since Akonadi wouldn't start at all even after re-login. After another reboot, I can finally start KMail and at least glimpse a few emails. However, the crashes still happen:

syys 01 21:48:20 ArkkiVille systemd-coredump[5075]: [?] Process 4679 (mysqld) of user 1000 dumped core.
                                                    
                                                    Stack trace of thread 4895:
                                                    #0  0x00007f92a7799615 raise (libc.so.6 + 0x3d615)
                                                    #1  0x00007f92a7782912 abort (libc.so.6 + 0x26912)
                                                    #2  0x000055a40c0daf78 n/a (mariadbd + 0x614f78)
                                                    #3  0x000055a40c0bed9e n/a (mariadbd + 0x5f8d9e)
                                                    #4  0x000055a40c73e911 n/a (mariadbd + 0xc78911)
                                                    #5  0x000055a40c73fd75 n/a (mariadbd + 0xc79d75)
                                                    #6  0x000055a40c7403b7 n/a (mariadbd + 0xc7a3b7)
                                                    #7  0x000055a40c7bcf48 n/a (mariadbd + 0xcf6f48)
                                                    #8  0x000055a40c7bdfd8 n/a (mariadbd + 0xcf7fd8)
                                                    #9  0x000055a40c8b55cb _ZN5tpool19thread_pool_generic13timer_generic7executeEPv (mariadbd + 0xdef5cb)
                                                    #10 0x000055a40c8b65f2 _ZN5tpool4task7executeEv (mariadbd + 0xdf05f2)
                                                    #11 0x000055a40c8b527f _ZN5tpool19thread_pool_generic11worker_mainEPNS_11worker_dataE (mariadbd + 0xdef27f)
                                                    #12 0x00007f92a7b54c24 execute_native_thread_routine (libstdc++.so.6 + 0xcfc24)
                                                    #13 0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #14 0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 4681:
                                                    #0  0x00007f92a7c799c8 pthread_cond_timedwait@@GLIBC_2.3.2 (libpthread.so.0 + 0xf9c8)
                                                    #1  0x000055a40c5f6f5b n/a (mariadbd + 0xb30f5b)
                                                    #2  0x000055a40c5ef5a6 n/a (mariadbd + 0xb295a6)
                                                    #3  0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #4  0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 4683:
                                                    #0  0x00007f92a7856d5d syscall (libc.so.6 + 0xfad5d)
                                                    #1  0x000055a40c74d194 n/a (mariadbd + 0xc87194)
                                                    #2  0x000055a40c73ff1e n/a (mariadbd + 0xc79f1e)
                                                    #3  0x000055a40c82a353 n/a (mariadbd + 0xd64353)
                                                    #4  0x000055a40c82af5f n/a (mariadbd + 0xd64f5f)
                                                    #5  0x000055a40c82b665 n/a (mariadbd + 0xd65665)
                                                    #6  0x000055a40c82bd6d n/a (mariadbd + 0xd65d6d)
                                                    #7  0x000055a40c0e5fd6 n/a (mariadbd + 0x61ffd6)
                                                    #8  0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #9  0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 4679:
                                                    #0  0x00007f92a785146f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055a40c143b48 _Z26handle_connections_socketsv (mariadbd + 0x67db48)
                                                    #2  0x000055a40c1449a9 _Z11mysqld_mainiPPc (mariadbd + 0x67e9a9)
                                                    #3  0x00007f92a7784152 __libc_start_main (libc.so.6 + 0x28152)
                                                    #4  0x000055a40c138c7e _start (mariadbd + 0x672c7e)
                                                    
                                                    Stack trace of thread 4686:
                                                    #0  0x00007f92a7c79cf8 pthread_cond_clockwait (libpthread.so.0 + 0xfcf8)
                                                    #1  0x000055a40c8b381a _ZN5tpool19thread_pool_generic14wait_for_tasksERSt11unique_lockISt5mutexEPNS_11worker_dataE (mariadbd + 0xded81a)
                                                    #2  0x000055a40c8b3c3f _ZN5tpool19thread_pool_generic8get_taskEPNS_11worker_dataEPPNS_4taskE (mariadbd + 0xdedc3f)
                                                    #3  0x000055a40c8b528e _ZN5tpool19thread_pool_generic11worker_mainEPNS_11worker_dataE (mariadbd + 0xdef28e)
                                                    #4  0x00007f92a7b54c24 execute_native_thread_routine (libstdc++.so.6 + 0xcfc24)
                                                    #5  0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #6  0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 4682:
                                                    #0  0x00007f92a7856d5d syscall (libc.so.6 + 0xfad5d)
                                                    #1  0x00007f92a7ca7187 n/a (libaio.so.1 + 0x1187)
                                                    #2  0x000055a40c8b6c3a _ZN5tpool9aio_linux23getevent_thread_routineEPS0_ (mariadbd + 0xdf0c3a)
                                                    #3  0x00007f92a7b54c24 execute_native_thread_routine (libstdc++.so.6 + 0xcfc24)
                                                    #4  0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #5  0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 4680:
                                                    #0  0x00007f92a7c799c8 pthread_cond_timedwait@@GLIBC_2.3.2 (libpthread.so.0 + 0xf9c8)
                                                    #1  0x000055a40c9185eb n/a (mariadbd + 0xe525eb)
                                                    #2  0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #3  0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 4687:
                                                    #0  0x00007f92a7c79cf8 pthread_cond_clockwait (libpthread.so.0 + 0xfcf8)
                                                    #1  0x000055a40c8b381a _ZN5tpool19thread_pool_generic14wait_for_tasksERSt11unique_lockISt5mutexEPNS_11worker_dataE (mariadbd + 0xded81a)
                                                    #2  0x000055a40c8b3c3f _ZN5tpool19thread_pool_generic8get_taskEPNS_11worker_dataEPPNS_4taskE (mariadbd + 0xdedc3f)
                                                    #3  0x000055a40c8b528e _ZN5tpool19thread_pool_generic11worker_mainEPNS_11worker_dataE (mariadbd + 0xdef28e)
                                                    #4  0x00007f92a7b54c24 execute_native_thread_routine (libstdc++.so.6 + 0xcfc24)
                                                    #5  0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #6  0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 4688:
                                                    #0  0x00007f92a779a402 __sigtimedwait (libc.so.6 + 0x3e402)
                                                    #1  0x000055a40c13b7a4 signal_hand (mariadbd + 0x6757a4)
                                                    #2  0x000055a40c657708 n/a (mariadbd + 0xb91708)
                                                    #3  0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #4  0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 4689:
                                                    #0  0x00007f92a7c796a2 pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0 + 0xf6a2)
                                                    #1  0x000055a40c1592cc handle_slave_background (mariadbd + 0x6932cc)
                                                    #2  0x000055a40c657708 n/a (mariadbd + 0xb91708)
                                                    #3  0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #4  0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 4692:
                                                    #0  0x00007f92a785146f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055a40c59c3dc vio_io_wait (mariadbd + 0xad63dc)
                                                    #2  0x000055a40c59c551 vio_socket_io_wait (mariadbd + 0xad6551)
                                                    #3  0x000055a40c59c636 vio_read (mariadbd + 0xad6636)
                                                    #4  0x000055a40c51e095 n/a (mariadbd + 0xa58095)
                                                    #5  0x000055a40c51f190 my_net_read_packet_reallen (mariadbd + 0xa59190)
                                                    #6  0x000055a40c51f28e my_net_read_packet (mariadbd + 0xa5928e)
                                                    #7  0x000055a40c20c030 _Z10do_commandP3THD (mariadbd + 0x746030)
                                                    #8  0x000055a40c2fb4ec _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8354ec)
                                                    #9  0x000055a40c2fb776 handle_one_connection (mariadbd + 0x835776)
                                                    #10 0x000055a40c657708 n/a (mariadbd + 0xb91708)
                                                    #11 0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #12 0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 4803:
                                                    #0  0x00007f92a785146f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055a40c59c3dc vio_io_wait (mariadbd + 0xad63dc)
                                                    #2  0x000055a40c59c551 vio_socket_io_wait (mariadbd + 0xad6551)
                                                    #3  0x000055a40c59c636 vio_read (mariadbd + 0xad6636)
                                                    #4  0x000055a40c51e095 n/a (mariadbd + 0xa58095)
                                                    #5  0x000055a40c51f190 my_net_read_packet_reallen (mariadbd + 0xa59190)
                                                    #6  0x000055a40c51f28e my_net_read_packet (mariadbd + 0xa5928e)
                                                    #7  0x000055a40c20c030 _Z10do_commandP3THD (mariadbd + 0x746030)
                                                    #8  0x000055a40c2fb4ec _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8354ec)
                                                    #9  0x000055a40c2fb776 handle_one_connection (mariadbd + 0x835776)
                                                    #10 0x000055a40c657708 n/a (mariadbd + 0xb91708)
                                                    #11 0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #12 0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 4701:
                                                    #0  0x00007f92a785146f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055a40c59c3dc vio_io_wait (mariadbd + 0xad63dc)
                                                    #2  0x000055a40c59c551 vio_socket_io_wait (mariadbd + 0xad6551)
                                                    #3  0x000055a40c59c636 vio_read (mariadbd + 0xad6636)
                                                    #4  0x000055a40c51e095 n/a (mariadbd + 0xa58095)
                                                    #5  0x000055a40c51f190 my_net_read_packet_reallen (mariadbd + 0xa59190)
                                                    #6  0x000055a40c51f28e my_net_read_packet (mariadbd + 0xa5928e)
                                                    #7  0x000055a40c20c030 _Z10do_commandP3THD (mariadbd + 0x746030)
                                                    #8  0x000055a40c2fb4ec _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8354ec)
                                                    #9  0x000055a40c2fb776 handle_one_connection (mariadbd + 0x835776)
                                                    #10 0x000055a40c657708 n/a (mariadbd + 0xb91708)
                                                    #11 0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #12 0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 4754:
                                                    #0  0x00007f92a785146f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055a40c59c3dc vio_io_wait (mariadbd + 0xad63dc)
                                                    #2  0x000055a40c59c551 vio_socket_io_wait (mariadbd + 0xad6551)
                                                    #3  0x000055a40c59c636 vio_read (mariadbd + 0xad6636)
                                                    #4  0x000055a40c51e095 n/a (mariadbd + 0xa58095)
                                                    #5  0x000055a40c51f190 my_net_read_packet_reallen (mariadbd + 0xa59190)
                                                    #6  0x000055a40c51f28e my_net_read_packet (mariadbd + 0xa5928e)
                                                    #7  0x000055a40c20c030 _Z10do_commandP3THD (mariadbd + 0x746030)
                                                    #8  0x000055a40c2fb4ec _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8354ec)
                                                    #9  0x000055a40c2fb776 handle_one_connection (mariadbd + 0x835776)
                                                    #10 0x000055a40c657708 n/a (mariadbd + 0xb91708)
                                                    #11 0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #12 0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 4690:
                                                    #0  0x00007f92a785146f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055a40c59c3dc vio_io_wait (mariadbd + 0xad63dc)
                                                    #2  0x000055a40c59c551 vio_socket_io_wait (mariadbd + 0xad6551)
                                                    #3  0x000055a40c59c636 vio_read (mariadbd + 0xad6636)
                                                    #4  0x000055a40c51e095 n/a (mariadbd + 0xa58095)
                                                    #5  0x000055a40c51f190 my_net_read_packet_reallen (mariadbd + 0xa59190)
                                                    #6  0x000055a40c51f28e my_net_read_packet (mariadbd + 0xa5928e)
                                                    #7  0x000055a40c20c030 _Z10do_commandP3THD (mariadbd + 0x746030)
                                                    #8  0x000055a40c2fb4ec _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8354ec)
                                                    #9  0x000055a40c2fb776 handle_one_connection (mariadbd + 0x835776)
                                                    #10 0x000055a40c657708 n/a (mariadbd + 0xb91708)
                                                    #11 0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #12 0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 4897:
                                                    #0  0x00007f92a7c79cf8 pthread_cond_clockwait (libpthread.so.0 + 0xfcf8)
                                                    #1  0x000055a40c8b381a _ZN5tpool19thread_pool_generic14wait_for_tasksERSt11unique_lockISt5mutexEPNS_11worker_dataE (mariadbd + 0xded81a)
                                                    #2  0x000055a40c8b3c3f _ZN5tpool19thread_pool_generic8get_taskEPNS_11worker_dataEPPNS_4taskE (mariadbd + 0xdedc3f)
                                                    #3  0x000055a40c8b528e _ZN5tpool19thread_pool_generic11worker_mainEPNS_11worker_dataE (mariadbd + 0xdef28e)
                                                    #4  0x00007f92a7b54c24 execute_native_thread_routine (libstdc++.so.6 + 0xcfc24)
                                                    #5  0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #6  0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 4757:
                                                    #0  0x00007f92a785146f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055a40c59c3dc vio_io_wait (mariadbd + 0xad63dc)
                                                    #2  0x000055a40c59c551 vio_socket_io_wait (mariadbd + 0xad6551)
                                                    #3  0x000055a40c59c636 vio_read (mariadbd + 0xad6636)
                                                    #4  0x000055a40c51e095 n/a (mariadbd + 0xa58095)
                                                    #5  0x000055a40c51f190 my_net_read_packet_reallen (mariadbd + 0xa59190)
                                                    #6  0x000055a40c51f28e my_net_read_packet (mariadbd + 0xa5928e)
                                                    #7  0x000055a40c20c030 _Z10do_commandP3THD (mariadbd + 0x746030)
                                                    #8  0x000055a40c2fb4ec _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8354ec)
                                                    #9  0x000055a40c2fb776 handle_one_connection (mariadbd + 0x835776)
                                                    #10 0x000055a40c657708 n/a (mariadbd + 0xb91708)
                                                    #11 0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #12 0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 4875:
                                                    #0  0x00007f92a785146f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055a40c59c3dc vio_io_wait (mariadbd + 0xad63dc)
                                                    #2  0x000055a40c59c551 vio_socket_io_wait (mariadbd + 0xad6551)
                                                    #3  0x000055a40c59c636 vio_read (mariadbd + 0xad6636)
                                                    #4  0x000055a40c51e095 n/a (mariadbd + 0xa58095)
                                                    #5  0x000055a40c51f190 my_net_read_packet_reallen (mariadbd + 0xa59190)
                                                    #6  0x000055a40c51f28e my_net_read_packet (mariadbd + 0xa5928e)
                                                    #7  0x000055a40c20c030 _Z10do_commandP3THD (mariadbd + 0x746030)
                                                    #8  0x000055a40c2fb4ec _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8354ec)
                                                    #9  0x000055a40c2fb776 handle_one_connection (mariadbd + 0x835776)
                                                    #10 0x000055a40c657708 n/a (mariadbd + 0xb91708)
                                                    #11 0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #12 0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 4758:
                                                    #0  0x00007f92a785146f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055a40c59c3dc vio_io_wait (mariadbd + 0xad63dc)
                                                    #2  0x000055a40c59c551 vio_socket_io_wait (mariadbd + 0xad6551)
                                                    #3  0x000055a40c59c636 vio_read (mariadbd + 0xad6636)
                                                    #4  0x000055a40c51e095 n/a (mariadbd + 0xa58095)
                                                    #5  0x000055a40c51f190 my_net_read_packet_reallen (mariadbd + 0xa59190)
                                                    #6  0x000055a40c51f28e my_net_read_packet (mariadbd + 0xa5928e)
                                                    #7  0x000055a40c20c030 _Z10do_commandP3THD (mariadbd + 0x746030)
                                                    #8  0x000055a40c2fb4ec _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8354ec)
                                                    #9  0x000055a40c2fb776 handle_one_connection (mariadbd + 0x835776)
                                                    #10 0x000055a40c657708 n/a (mariadbd + 0xb91708)
                                                    #11 0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #12 0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 4807:
                                                    #0  0x00007f92a785146f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055a40c59c3dc vio_io_wait (mariadbd + 0xad63dc)
                                                    #2  0x000055a40c59c551 vio_socket_io_wait (mariadbd + 0xad6551)
                                                    #3  0x000055a40c59c636 vio_read (mariadbd + 0xad6636)
                                                    #4  0x000055a40c51e095 n/a (mariadbd + 0xa58095)
                                                    #5  0x000055a40c51f190 my_net_read_packet_reallen (mariadbd + 0xa59190)
                                                    #6  0x000055a40c51f28e my_net_read_packet (mariadbd + 0xa5928e)
                                                    #7  0x000055a40c20c030 _Z10do_commandP3THD (mariadbd + 0x746030)
                                                    #8  0x000055a40c2fb4ec _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8354ec)
                                                    #9  0x000055a40c2fb776 handle_one_connection (mariadbd + 0x835776)
                                                    #10 0x000055a40c657708 n/a (mariadbd + 0xb91708)
                                                    #11 0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #12 0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 4923:
                                                    #0  0x00007f92a785146f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055a40c59c3dc vio_io_wait (mariadbd + 0xad63dc)
                                                    #2  0x000055a40c59c551 vio_socket_io_wait (mariadbd + 0xad6551)
                                                    #3  0x000055a40c59c636 vio_read (mariadbd + 0xad6636)
                                                    #4  0x000055a40c51e095 n/a (mariadbd + 0xa58095)
                                                    #5  0x000055a40c51f190 my_net_read_packet_reallen (mariadbd + 0xa59190)
                                                    #6  0x000055a40c51f28e my_net_read_packet (mariadbd + 0xa5928e)
                                                    #7  0x000055a40c20c030 _Z10do_commandP3THD (mariadbd + 0x746030)
                                                    #8  0x000055a40c2fb4ec _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8354ec)
                                                    #9  0x000055a40c2fb776 handle_one_connection (mariadbd + 0x835776)
                                                    #10 0x000055a40c657708 n/a (mariadbd + 0xb91708)
                                                    #11 0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #12 0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 4902:
                                                    #0  0x00007f92a7c79cf8 pthread_cond_clockwait (libpthread.so.0 + 0xfcf8)
                                                    #1  0x000055a40c8b381a _ZN5tpool19thread_pool_generic14wait_for_tasksERSt11unique_lockISt5mutexEPNS_11worker_dataE (mariadbd + 0xded81a)
                                                    #2  0x000055a40c8b3c3f _ZN5tpool19thread_pool_generic8get_taskEPNS_11worker_dataEPPNS_4taskE (mariadbd + 0xdedc3f)
                                                    #3  0x000055a40c8b528e _ZN5tpool19thread_pool_generic11worker_mainEPNS_11worker_dataE (mariadbd + 0xdef28e)
                                                    #4  0x00007f92a7b54c24 execute_native_thread_routine (libstdc++.so.6 + 0xcfc24)
                                                    #5  0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #6  0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 4893:
                                                    #0  0x00007f92a785146f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055a40c59c3dc vio_io_wait (mariadbd + 0xad63dc)
                                                    #2  0x000055a40c59c551 vio_socket_io_wait (mariadbd + 0xad6551)
                                                    #3  0x000055a40c59c636 vio_read (mariadbd + 0xad6636)
                                                    #4  0x000055a40c51e095 n/a (mariadbd + 0xa58095)
                                                    #5  0x000055a40c51f190 my_net_read_packet_reallen (mariadbd + 0xa59190)
                                                    #6  0x000055a40c51f28e my_net_read_packet (mariadbd + 0xa5928e)
                                                    #7  0x000055a40c20c030 _Z10do_commandP3THD (mariadbd + 0x746030)
                                                    #8  0x000055a40c2fb4ec _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8354ec)
                                                    #9  0x000055a40c2fb776 handle_one_connection (mariadbd + 0x835776)
                                                    #10 0x000055a40c657708 n/a (mariadbd + 0xb91708)
                                                    #11 0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #12 0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 4811:
                                                    #0  0x00007f92a785146f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055a40c59c3dc vio_io_wait (mariadbd + 0xad63dc)
                                                    #2  0x000055a40c59c551 vio_socket_io_wait (mariadbd + 0xad6551)
                                                    #3  0x000055a40c59c636 vio_read (mariadbd + 0xad6636)
                                                    #4  0x000055a40c51e095 n/a (mariadbd + 0xa58095)
                                                    #5  0x000055a40c51f190 my_net_read_packet_reallen (mariadbd + 0xa59190)
                                                    #6  0x000055a40c51f28e my_net_read_packet (mariadbd + 0xa5928e)
                                                    #7  0x000055a40c20c030 _Z10do_commandP3THD (mariadbd + 0x746030)
                                                    #8  0x000055a40c2fb4ec _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8354ec)
                                                    #9  0x000055a40c2fb776 handle_one_connection (mariadbd + 0x835776)
                                                    #10 0x000055a40c657708 n/a (mariadbd + 0xb91708)
                                                    #11 0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #12 0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 4838:
                                                    #0  0x00007f92a785146f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055a40c59c3dc vio_io_wait (mariadbd + 0xad63dc)
                                                    #2  0x000055a40c59c551 vio_socket_io_wait (mariadbd + 0xad6551)
                                                    #3  0x000055a40c59c636 vio_read (mariadbd + 0xad6636)
                                                    #4  0x000055a40c51e095 n/a (mariadbd + 0xa58095)
                                                    #5  0x000055a40c51f190 my_net_read_packet_reallen (mariadbd + 0xa59190)
                                                    #6  0x000055a40c51f28e my_net_read_packet (mariadbd + 0xa5928e)
                                                    #7  0x000055a40c20c030 _Z10do_commandP3THD (mariadbd + 0x746030)
                                                    #8  0x000055a40c2fb4ec _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8354ec)
                                                    #9  0x000055a40c2fb776 handle_one_connection (mariadbd + 0x835776)
                                                    #10 0x000055a40c657708 n/a (mariadbd + 0xb91708)
                                                    #11 0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #12 0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 4812:
                                                    #0  0x00007f92a785146f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055a40c59c3dc vio_io_wait (mariadbd + 0xad63dc)
                                                    #2  0x000055a40c59c551 vio_socket_io_wait (mariadbd + 0xad6551)
                                                    #3  0x000055a40c59c636 vio_read (mariadbd + 0xad6636)
                                                    #4  0x000055a40c51e095 n/a (mariadbd + 0xa58095)
                                                    #5  0x000055a40c51f190 my_net_read_packet_reallen (mariadbd + 0xa59190)
                                                    #6  0x000055a40c51f28e my_net_read_packet (mariadbd + 0xa5928e)
                                                    #7  0x000055a40c20c030 _Z10do_commandP3THD (mariadbd + 0x746030)
                                                    #8  0x000055a40c2fb4ec _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8354ec)
                                                    #9  0x000055a40c2fb776 handle_one_connection (mariadbd + 0x835776)
                                                    #10 0x000055a40c657708 n/a (mariadbd + 0xb91708)
                                                    #11 0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #12 0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 4940:
                                                    #0  0x00007f92a785146f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055a40c59c3dc vio_io_wait (mariadbd + 0xad63dc)
                                                    #2  0x000055a40c59c551 vio_socket_io_wait (mariadbd + 0xad6551)
                                                    #3  0x000055a40c59c636 vio_read (mariadbd + 0xad6636)
                                                    #4  0x000055a40c51e095 n/a (mariadbd + 0xa58095)
                                                    #5  0x000055a40c51f190 my_net_read_packet_reallen (mariadbd + 0xa59190)
                                                    #6  0x000055a40c51f28e my_net_read_packet (mariadbd + 0xa5928e)
                                                    #7  0x000055a40c20c030 _Z10do_commandP3THD (mariadbd + 0x746030)
                                                    #8  0x000055a40c2fb4ec _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8354ec)
                                                    #9  0x000055a40c2fb776 handle_one_connection (mariadbd + 0x835776)
                                                    #10 0x000055a40c657708 n/a (mariadbd + 0xb91708)
                                                    #11 0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #12 0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 4901:
                                                    #0  0x00007f92a7c79cf8 pthread_cond_clockwait (libpthread.so.0 + 0xfcf8)
                                                    #1  0x000055a40c8b381a _ZN5tpool19thread_pool_generic14wait_for_tasksERSt11unique_lockISt5mutexEPNS_11worker_dataE (mariadbd + 0xded81a)
                                                    #2  0x000055a40c8b3c3f _ZN5tpool19thread_pool_generic8get_taskEPNS_11worker_dataEPPNS_4taskE (mariadbd + 0xdedc3f)
                                                    #3  0x000055a40c8b528e _ZN5tpool19thread_pool_generic11worker_mainEPNS_11worker_dataE (mariadbd + 0xdef28e)
                                                    #4  0x00007f92a7b54c24 execute_native_thread_routine (libstdc++.so.6 + 0xcfc24)
                                                    #5  0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #6  0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 4835:
                                                    #0  0x00007f92a785146f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055a40c59c3dc vio_io_wait (mariadbd + 0xad63dc)
                                                    #2  0x000055a40c59c551 vio_socket_io_wait (mariadbd + 0xad6551)
                                                    #3  0x000055a40c59c636 vio_read (mariadbd + 0xad6636)
                                                    #4  0x000055a40c51e095 n/a (mariadbd + 0xa58095)
                                                    #5  0x000055a40c51f190 my_net_read_packet_reallen (mariadbd + 0xa59190)
                                                    #6  0x000055a40c51f28e my_net_read_packet (mariadbd + 0xa5928e)
                                                    #7  0x000055a40c20c030 _Z10do_commandP3THD (mariadbd + 0x746030)
                                                    #8  0x000055a40c2fb4ec _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8354ec)
                                                    #9  0x000055a40c2fb776 handle_one_connection (mariadbd + 0x835776)
                                                    #10 0x000055a40c657708 n/a (mariadbd + 0xb91708)
                                                    #11 0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #12 0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 4945:
                                                    #0  0x00007f92a785146f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055a40c59c3dc vio_io_wait (mariadbd + 0xad63dc)
                                                    #2  0x000055a40c59c551 vio_socket_io_wait (mariadbd + 0xad6551)
                                                    #3  0x000055a40c59c636 vio_read (mariadbd + 0xad6636)
                                                    #4  0x000055a40c51e095 n/a (mariadbd + 0xa58095)
                                                    #5  0x000055a40c51f190 my_net_read_packet_reallen (mariadbd + 0xa59190)
                                                    #6  0x000055a40c51f28e my_net_read_packet (mariadbd + 0xa5928e)
                                                    #7  0x000055a40c20c030 _Z10do_commandP3THD (mariadbd + 0x746030)
                                                    #8  0x000055a40c2fb4ec _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8354ec)
                                                    #9  0x000055a40c2fb776 handle_one_connection (mariadbd + 0x835776)
                                                    #10 0x000055a40c657708 n/a (mariadbd + 0xb91708)
                                                    #11 0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #12 0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 4874:
                                                    #0  0x00007f92a785146f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055a40c59c3dc vio_io_wait (mariadbd + 0xad63dc)
                                                    #2  0x000055a40c59c551 vio_socket_io_wait (mariadbd + 0xad6551)
                                                    #3  0x000055a40c59c636 vio_read (mariadbd + 0xad6636)
                                                    #4  0x000055a40c51e095 n/a (mariadbd + 0xa58095)
                                                    #5  0x000055a40c51f190 my_net_read_packet_reallen (mariadbd + 0xa59190)
                                                    #6  0x000055a40c51f28e my_net_read_packet (mariadbd + 0xa5928e)
                                                    #7  0x000055a40c20c030 _Z10do_commandP3THD (mariadbd + 0x746030)
                                                    #8  0x000055a40c2fb4ec _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8354ec)
                                                    #9  0x000055a40c2fb776 handle_one_connection (mariadbd + 0x835776)
                                                    #10 0x000055a40c657708 n/a (mariadbd + 0xb91708)
                                                    #11 0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #12 0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 5000:
                                                    #0  0x00007f92a785146f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055a40c59c3dc vio_io_wait (mariadbd + 0xad63dc)
                                                    #2  0x000055a40c59c551 vio_socket_io_wait (mariadbd + 0xad6551)
                                                    #3  0x000055a40c59c636 vio_read (mariadbd + 0xad6636)
                                                    #4  0x000055a40c51e095 n/a (mariadbd + 0xa58095)
                                                    #5  0x000055a40c51f190 my_net_read_packet_reallen (mariadbd + 0xa59190)
                                                    #6  0x000055a40c51f28e my_net_read_packet (mariadbd + 0xa5928e)
                                                    #7  0x000055a40c20c030 _Z10do_commandP3THD (mariadbd + 0x746030)
                                                    #8  0x000055a40c2fb4ec _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8354ec)
                                                    #9  0x000055a40c2fb776 handle_one_connection (mariadbd + 0x835776)
                                                    #10 0x000055a40c657708 n/a (mariadbd + 0xb91708)
                                                    #11 0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #12 0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 4873:
                                                    #0  0x00007f92a785146f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055a40c59c3dc vio_io_wait (mariadbd + 0xad63dc)
                                                    #2  0x000055a40c59c551 vio_socket_io_wait (mariadbd + 0xad6551)
                                                    #3  0x000055a40c59c636 vio_read (mariadbd + 0xad6636)
                                                    #4  0x000055a40c51e095 n/a (mariadbd + 0xa58095)
                                                    #5  0x000055a40c51f190 my_net_read_packet_reallen (mariadbd + 0xa59190)
                                                    #6  0x000055a40c51f28e my_net_read_packet (mariadbd + 0xa5928e)
                                                    #7  0x000055a40c20c030 _Z10do_commandP3THD (mariadbd + 0x746030)
                                                    #8  0x000055a40c2fb4ec _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8354ec)
                                                    #9  0x000055a40c2fb776 handle_one_connection (mariadbd + 0x835776)
                                                    #10 0x000055a40c657708 n/a (mariadbd + 0xb91708)
                                                    #11 0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #12 0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 4876:
                                                    #0  0x00007f92a785146f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055a40c59c3dc vio_io_wait (mariadbd + 0xad63dc)
                                                    #2  0x000055a40c59c551 vio_socket_io_wait (mariadbd + 0xad6551)
                                                    #3  0x000055a40c59c636 vio_read (mariadbd + 0xad6636)
                                                    #4  0x000055a40c51e095 n/a (mariadbd + 0xa58095)
                                                    #5  0x000055a40c51f190 my_net_read_packet_reallen (mariadbd + 0xa59190)
                                                    #6  0x000055a40c51f28e my_net_read_packet (mariadbd + 0xa5928e)
                                                    #7  0x000055a40c20c030 _Z10do_commandP3THD (mariadbd + 0x746030)
                                                    #8  0x000055a40c2fb4ec _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8354ec)
                                                    #9  0x000055a40c2fb776 handle_one_connection (mariadbd + 0x835776)
                                                    #10 0x000055a40c657708 n/a (mariadbd + 0xb91708)
                                                    #11 0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #12 0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 4900:
                                                    #0  0x00007f92a7c79cf8 pthread_cond_clockwait (libpthread.so.0 + 0xfcf8)
                                                    #1  0x000055a40c8b381a _ZN5tpool19thread_pool_generic14wait_for_tasksERSt11unique_lockISt5mutexEPNS_11worker_dataE (mariadbd + 0xded81a)
                                                    #2  0x000055a40c8b3c3f _ZN5tpool19thread_pool_generic8get_taskEPNS_11worker_dataEPPNS_4taskE (mariadbd + 0xdedc3f)
                                                    #3  0x000055a40c8b528e _ZN5tpool19thread_pool_generic11worker_mainEPNS_11worker_dataE (mariadbd + 0xdef28e)
                                                    #4  0x00007f92a7b54c24 execute_native_thread_routine (libstdc++.so.6 + 0xcfc24)
                                                    #5  0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #6  0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 4877:
                                                    #0  0x00007f92a785146f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055a40c59c3dc vio_io_wait (mariadbd + 0xad63dc)
                                                    #2  0x000055a40c59c551 vio_socket_io_wait (mariadbd + 0xad6551)
                                                    #3  0x000055a40c59c636 vio_read (mariadbd + 0xad6636)
                                                    #4  0x000055a40c51e095 n/a (mariadbd + 0xa58095)
                                                    #5  0x000055a40c51f190 my_net_read_packet_reallen (mariadbd + 0xa59190)
                                                    #6  0x000055a40c51f28e my_net_read_packet (mariadbd + 0xa5928e)
                                                    #7  0x000055a40c20c030 _Z10do_commandP3THD (mariadbd + 0x746030)
                                                    #8  0x000055a40c2fb4ec _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8354ec)
                                                    #9  0x000055a40c2fb776 handle_one_connection (mariadbd + 0x835776)
                                                    #10 0x000055a40c657708 n/a (mariadbd + 0xb91708)
                                                    #11 0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #12 0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 4887:
                                                    #0  0x00007f92a785146f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055a40c59c3dc vio_io_wait (mariadbd + 0xad63dc)
                                                    #2  0x000055a40c59c551 vio_socket_io_wait (mariadbd + 0xad6551)
                                                    #3  0x000055a40c59c636 vio_read (mariadbd + 0xad6636)
                                                    #4  0x000055a40c51e095 n/a (mariadbd + 0xa58095)
                                                    #5  0x000055a40c51f190 my_net_read_packet_reallen (mariadbd + 0xa59190)
                                                    #6  0x000055a40c51f28e my_net_read_packet (mariadbd + 0xa5928e)
                                                    #7  0x000055a40c20c030 _Z10do_commandP3THD (mariadbd + 0x746030)
                                                    #8  0x000055a40c2fb4ec _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8354ec)
                                                    #9  0x000055a40c2fb776 handle_one_connection (mariadbd + 0x835776)
                                                    #10 0x000055a40c657708 n/a (mariadbd + 0xb91708)
                                                    #11 0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #12 0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 4879:
                                                    #0  0x00007f92a785146f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055a40c59c3dc vio_io_wait (mariadbd + 0xad63dc)
                                                    #2  0x000055a40c59c551 vio_socket_io_wait (mariadbd + 0xad6551)
                                                    #3  0x000055a40c59c636 vio_read (mariadbd + 0xad6636)
                                                    #4  0x000055a40c51e095 n/a (mariadbd + 0xa58095)
                                                    #5  0x000055a40c51f190 my_net_read_packet_reallen (mariadbd + 0xa59190)
                                                    #6  0x000055a40c51f28e my_net_read_packet (mariadbd + 0xa5928e)
                                                    #7  0x000055a40c20c030 _Z10do_commandP3THD (mariadbd + 0x746030)
                                                    #8  0x000055a40c2fb4ec _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8354ec)
                                                    #9  0x000055a40c2fb776 handle_one_connection (mariadbd + 0x835776)
                                                    #10 0x000055a40c657708 n/a (mariadbd + 0xb91708)
                                                    #11 0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #12 0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 4894:
                                                    #0  0x00007f92a7c79cf8 pthread_cond_clockwait (libpthread.so.0 + 0xfcf8)
                                                    #1  0x000055a40c8b381a _ZN5tpool19thread_pool_generic14wait_for_tasksERSt11unique_lockISt5mutexEPNS_11worker_dataE (mariadbd + 0xded81a)
                                                    #2  0x000055a40c8b3c3f _ZN5tpool19thread_pool_generic8get_taskEPNS_11worker_dataEPPNS_4taskE (mariadbd + 0xdedc3f)
                                                    #3  0x000055a40c8b528e _ZN5tpool19thread_pool_generic11worker_mainEPNS_11worker_dataE (mariadbd + 0xdef28e)
                                                    #4  0x00007f92a7b54c24 execute_native_thread_routine (libstdc++.so.6 + 0xcfc24)
                                                    #5  0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #6  0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 4898:
                                                    #0  0x00007f92a7c79cf8 pthread_cond_clockwait (libpthread.so.0 + 0xfcf8)
                                                    #1  0x000055a40c8b381a _ZN5tpool19thread_pool_generic14wait_for_tasksERSt11unique_lockISt5mutexEPNS_11worker_dataE (mariadbd + 0xded81a)
                                                    #2  0x000055a40c8b3c3f _ZN5tpool19thread_pool_generic8get_taskEPNS_11worker_dataEPPNS_4taskE (mariadbd + 0xdedc3f)
                                                    #3  0x000055a40c8b528e _ZN5tpool19thread_pool_generic11worker_mainEPNS_11worker_dataE (mariadbd + 0xdef28e)
                                                    #4  0x00007f92a7b54c24 execute_native_thread_routine (libstdc++.so.6 + 0xcfc24)
                                                    #5  0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #6  0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 4888:
                                                    #0  0x00007f92a785146f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055a40c59c3dc vio_io_wait (mariadbd + 0xad63dc)
                                                    #2  0x000055a40c59c551 vio_socket_io_wait (mariadbd + 0xad6551)
                                                    #3  0x000055a40c59c636 vio_read (mariadbd + 0xad6636)
                                                    #4  0x000055a40c51e095 n/a (mariadbd + 0xa58095)
                                                    #5  0x000055a40c51f190 my_net_read_packet_reallen (mariadbd + 0xa59190)
                                                    #6  0x000055a40c51f28e my_net_read_packet (mariadbd + 0xa5928e)
                                                    #7  0x000055a40c20c030 _Z10do_commandP3THD (mariadbd + 0x746030)
                                                    #8  0x000055a40c2fb4ec _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8354ec)
                                                    #9  0x000055a40c2fb776 handle_one_connection (mariadbd + 0x835776)
                                                    #10 0x000055a40c657708 n/a (mariadbd + 0xb91708)
                                                    #11 0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #12 0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 4899:
                                                    #0  0x00007f92a7c79cf8 pthread_cond_clockwait (libpthread.so.0 + 0xfcf8)
                                                    #1  0x000055a40c8b381a _ZN5tpool19thread_pool_generic14wait_for_tasksERSt11unique_lockISt5mutexEPNS_11worker_dataE (mariadbd + 0xded81a)
                                                    #2  0x000055a40c8b3c3f _ZN5tpool19thread_pool_generic8get_taskEPNS_11worker_dataEPPNS_4taskE (mariadbd + 0xdedc3f)
                                                    #3  0x000055a40c8b528e _ZN5tpool19thread_pool_generic11worker_mainEPNS_11worker_dataE (mariadbd + 0xdef28e)
                                                    #4  0x00007f92a7b54c24 execute_native_thread_routine (libstdc++.so.6 + 0xcfc24)
                                                    #5  0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #6  0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 4896:
                                                    #0  0x00007f92a7c79cf8 pthread_cond_clockwait (libpthread.so.0 + 0xfcf8)
                                                    #1  0x000055a40c8b381a _ZN5tpool19thread_pool_generic14wait_for_tasksERSt11unique_lockISt5mutexEPNS_11worker_dataE (mariadbd + 0xded81a)
                                                    #2  0x000055a40c8b3c3f _ZN5tpool19thread_pool_generic8get_taskEPNS_11worker_dataEPPNS_4taskE (mariadbd + 0xdedc3f)
                                                    #3  0x000055a40c8b528e _ZN5tpool19thread_pool_generic11worker_mainEPNS_11worker_dataE (mariadbd + 0xdef28e)
                                                    #4  0x00007f92a7b54c24 execute_native_thread_routine (libstdc++.so.6 + 0xcfc24)
                                                    #5  0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #6  0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 4952:
                                                    #0  0x00007f92a785146f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055a40c59c3dc vio_io_wait (mariadbd + 0xad63dc)
                                                    #2  0x000055a40c59c551 vio_socket_io_wait (mariadbd + 0xad6551)
                                                    #3  0x000055a40c59c636 vio_read (mariadbd + 0xad6636)
                                                    #4  0x000055a40c51e095 n/a (mariadbd + 0xa58095)
                                                    #5  0x000055a40c51f190 my_net_read_packet_reallen (mariadbd + 0xa59190)
                                                    #6  0x000055a40c51f28e my_net_read_packet (mariadbd + 0xa5928e)
                                                    #7  0x000055a40c20c030 _Z10do_commandP3THD (mariadbd + 0x746030)
                                                    #8  0x000055a40c2fb4ec _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8354ec)
                                                    #9  0x000055a40c2fb776 handle_one_connection (mariadbd + 0x835776)
                                                    #10 0x000055a40c657708 n/a (mariadbd + 0xb91708)
                                                    #11 0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #12 0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 4999:
                                                    #0  0x00007f92a785146f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055a40c59c3dc vio_io_wait (mariadbd + 0xad63dc)
                                                    #2  0x000055a40c59c551 vio_socket_io_wait (mariadbd + 0xad6551)
                                                    #3  0x000055a40c59c636 vio_read (mariadbd + 0xad6636)
                                                    #4  0x000055a40c51e095 n/a (mariadbd + 0xa58095)
                                                    #5  0x000055a40c51f190 my_net_read_packet_reallen (mariadbd + 0xa59190)
                                                    #6  0x000055a40c51f28e my_net_read_packet (mariadbd + 0xa5928e)
                                                    #7  0x000055a40c20c030 _Z10do_commandP3THD (mariadbd + 0x746030)
                                                    #8  0x000055a40c2fb4ec _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8354ec)
                                                    #9  0x000055a40c2fb776 handle_one_connection (mariadbd + 0x835776)
                                                    #10 0x000055a40c657708 n/a (mariadbd + 0xb91708)
                                                    #11 0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #12 0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 5041:
                                                    #0  0x00007f92a785146f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055a40c59c3dc vio_io_wait (mariadbd + 0xad63dc)
                                                    #2  0x000055a40c59c551 vio_socket_io_wait (mariadbd + 0xad6551)
                                                    #3  0x000055a40c59c636 vio_read (mariadbd + 0xad6636)
                                                    #4  0x000055a40c51e095 n/a (mariadbd + 0xa58095)
                                                    #5  0x000055a40c51f190 my_net_read_packet_reallen (mariadbd + 0xa59190)
                                                    #6  0x000055a40c51f28e my_net_read_packet (mariadbd + 0xa5928e)
                                                    #7  0x000055a40c20c030 _Z10do_commandP3THD (mariadbd + 0x746030)
                                                    #8  0x000055a40c2fb4ec _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8354ec)
                                                    #9  0x000055a40c2fb776 handle_one_connection (mariadbd + 0x835776)
                                                    #10 0x000055a40c657708 n/a (mariadbd + 0xb91708)
                                                    #11 0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #12 0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 4820:
                                                    #0  0x00007f92a785146f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055a40c59c3dc vio_io_wait (mariadbd + 0xad63dc)
                                                    #2  0x000055a40c59c551 vio_socket_io_wait (mariadbd + 0xad6551)
                                                    #3  0x000055a40c59c636 vio_read (mariadbd + 0xad6636)
                                                    #4  0x000055a40c51e095 n/a (mariadbd + 0xa58095)
                                                    #5  0x000055a40c51f190 my_net_read_packet_reallen (mariadbd + 0xa59190)
                                                    #6  0x000055a40c51f28e my_net_read_packet (mariadbd + 0xa5928e)
                                                    #7  0x000055a40c20c030 _Z10do_commandP3THD (mariadbd + 0x746030)
                                                    #8  0x000055a40c2fb4ec _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8354ec)
                                                    #9  0x000055a40c2fb776 handle_one_connection (mariadbd + 0x835776)
                                                    #10 0x000055a40c657708 n/a (mariadbd + 0xb91708)
                                                    #11 0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #12 0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
                                                    
                                                    Stack trace of thread 4885:
                                                    #0  0x00007f92a785146f __poll (libc.so.6 + 0xf546f)
                                                    #1  0x000055a40c59c3dc vio_io_wait (mariadbd + 0xad63dc)
                                                    #2  0x000055a40c59c551 vio_socket_io_wait (mariadbd + 0xad6551)
                                                    #3  0x000055a40c59c636 vio_read (mariadbd + 0xad6636)
                                                    #4  0x000055a40c51e095 n/a (mariadbd + 0xa58095)
                                                    #5  0x000055a40c51f190 my_net_read_packet_reallen (mariadbd + 0xa59190)
                                                    #6  0x000055a40c51f28e my_net_read_packet (mariadbd + 0xa5928e)
                                                    #7  0x000055a40c20c030 _Z10do_commandP3THD (mariadbd + 0x746030)
                                                    #8  0x000055a40c2fb4ec _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8354ec)
                                                    #9  0x000055a40c2fb776 handle_one_connection (mariadbd + 0x835776)
                                                    #10 0x000055a40c657708 n/a (mariadbd + 0xb91708)
                                                    #11 0x00007f92a7c733e9 start_thread (libpthread.so.0 + 0x93e9)
                                                    #12 0x00007f92a785c293 __clone (libc.so.6 + 0x100293)
syys 01 21:48:20 ArkkiVille systemd[1]: systemd-coredump@1-5074-0.service: Succeeded.

... after a few tens of seconds of trying to read my mails.

Last edited by Wild Penguin (2020-09-01 18:51:15)

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#7 2020-09-07 11:03:47

Wild Penguin
Member
Registered: 2015-03-19
Posts: 186

Re: [IGIVEUP]KMail: Constant Akonadi/mysqld crashes

Hi again,

After a while I still have this problem.

I've installed mariadb with debug symbols as per the Arch Wiki. Here is a link to one such trace. However I have no idea how to interpret that trace. Also, that bug actually happened in the background without me getting any kind of notification it had crashed (I had not opened KMail). Here is another trace which happened while I was actually using KMail (with same symptoms as I've described before).

Does this warrant a bug report?

It is worthwhile to mention I'm using an IMAP folder with dozens of folders (and subfolders) containing a few to a couple hundred emails each. That's typical email usage for me, but I can see all users might not have that kind of email folder(s).

Last edited by Wild Penguin (2020-09-07 11:21:44)

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#8 2020-09-30 14:51:02

Wild Penguin
Member
Registered: 2015-03-19
Posts: 186

Re: [IGIVEUP]KMail: Constant Akonadi/mysqld crashes

So,

After a lot of hair pulling (and moving back to atrocious o365 web interface to read my email in the interim), I just couldn't get kmail/akonadi/mariadb -combination to behave. I need to read email, though, so I've migrated to Thunderbird for the time being.

As a last resort (before starting to use Thunderbird), I tried to reset the kmail/akonadi configuration, so that this combination would re-create all data, including the mariadb part (as I'm not actully storing any email locally). Resetting the configuration was quite time consuming, something along the lines: 1. find files all over the home directory tree relating to kmail or akonadi -> 2. stop akonadi -> 3. remove said files found in step 1 -> 4. restart kmail -> 5. notice something still wasn't removed as it still finds parts of your previous config / emails, and mariadb still keeps crashing -> 6. restart from step 1, same result at step 5. -> 6. restart from step 1. -> restart from step 1. -> ... and I'm still not sure I got every bit of the configuration.

I even tried this instruction, however it is outdated or incomplete, as even after following those steps, kmail still finds some cruft from earlier configurations.

Because of time constraints, debugging this further - including creating a fresh home directory to see if the problem persists, perhaps trying to re-create it, and making a useful bug report at Arch bugzilla or freedesktop - is not a viable option at the moment. Maybe later...

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