and starting kmail or an akonadictl start does not solve the problem unfortunately.
Apr 21 19:57:08 n3150 systemd-coredump[5202]: Process 5177 (mysqld) of user 2809 dumped core.
Module linux-vdso.so.1 with build-id 145557cd9a22cb461959707f99e8eea14c339a8e
Module libgpg-error.so.0 with build-id 82524ee3d1c4c2244d7cfdcc1e6eea5f9855f6c6
Module libpthread.so.0 with build-id 7fa8b52fae071a370ba4ca32bf9490a30aff31c4
Module libgcrypt.so.20 with build-id 8bf3cb884124273640de797a3e77d86c98434ea4
Module libcap.so.2 with build-id eb6dae97527fc89dbb0d5bb581a15acd02ae9f56
Module liblz4.so.1 with build-id e63600ab23b2f6997f42fac2fa56e1f02ce159a1
Module libzstd.so.1 with build-id 3bccb8fe08e48d5ea135b1d0f99de0d771dd752f
Module liblzma.so.5 with build-id 8b615460aa230708c5183f16bede67aa0437d95e
Module ld-linux-x86-64.so.2 with build-id c09c6f50f6bcec73c64a0b4be77eadb8f7202410
Module libc.so.6 with build-id 85766e9d8458b16e9c7ce6e07c712c02b8471dbc
Module libgcc_s.so.1 with build-id 5d817452a709ca3a213341555ddcf446ecee37fa
Module libm.so.6 with build-id 596b63a006a4386dcab30912d2b54a7a61827b07
Module libstdc++.so.6 with build-id 88ad4eff81a00c684abfe0f863e87434123d8943
Module libz.so.1 with build-id 1fb800ce60ddb605ebe23f9702adcd341c7c8970
Module libsystemd.so.0 with build-id 05d0460efefd339d315812f9506aecc5a5d22200
Module libaio.so.1 with build-id 695ade37b71ebaed9669c51cdb05c0e25d8a9a0d
Module libcrypto.so.1.1 with build-id f94a24f9ce8f3f394c3df23f7d436796797d4459
Module libssl.so.1.1 with build-id 54f796076979dc9b6ff9ac3c39e250db86652924
Module libcrypt.so.2 with build-id a0a45f81771945f0559d04e93726d245159930da
Module mariadbd with build-id c125e9ad8ecfabeaee53f8eaecf92cf7bc2d9a11
Stack trace of thread 5177:
#0 0x00007fdcf29202af __poll (libc.so.6 + 0x1062af)
#1 0x000055953dd5cae3 _Z26handle_connections_socketsv (mariadbd + 0x641ae3)
#2 0x000055953dd68d44 _Z11mysqld_mainiPPc (mariadbd + 0x64dd44)
#3 0x00007fdcf2847310 __libc_start_call_main (libc.so.6 + 0x2d310)
#4 0x00007fdcf28473c1 __libc_start_main@@GLIBC_2.34 (libc.so.6 + 0x2d3c1)
#5 0x000055953dd20005 _start (mariadbd + 0x605005)
Stack trace of thread 5178:
#0 0x00007fdcf28a415a __futex_abstimed_wait_common (libc.so.6 + 0x8a15a)
#1 0x00007fdcf28a6c64 pthread_cond_timedwait@@GLIBC_2.3.2 (libc.so.6 + 0x8cc64)
#2 0x000055953e54ebf8 n/a (mariadbd + 0xe33bf8)
#3 0x00007fdcf28a75c2 start_thread (libc.so.6 + 0x8d5c2)
#4 0x00007fdcf292c584 __clone (libc.so.6 + 0x112584)
Stack trace of thread 5188:
#0 0x00007fdcf285d24a __sigtimedwait (libc.so.6 + 0x4324a)
#1 0x000055953dd54e1c signal_hand (mariadbd + 0x639e1c)
#2 0x000055953e2ff323 n/a (mariadbd + 0xbe4323)
#3 0x00007fdcf28a75c2 start_thread (libc.so.6 + 0x8d5c2)
#4 0x00007fdcf292c584 __clone (libc.so.6 + 0x112584)
Stack trace of thread 5179:
#0 0x00007fdcf28a415a __futex_abstimed_wait_common (libc.so.6 + 0x8a15a)
#1 0x00007fdcf28a6c64 pthread_cond_timedwait@@GLIBC_2.3.2 (libc.so.6 + 0x8cc64)
#2 0x000055953e28aa89 n/a (mariadbd + 0xb6fa89)
#3 0x000055953e292d3a n/a (mariadbd + 0xb77d3a)
#4 0x00007fdcf28a75c2 start_thread (libc.so.6 + 0x8d5c2)
#5 0x00007fdcf292c584 __clone (libc.so.6 + 0x112584)
Stack trace of thread 5181:
#0 0x00007fdcf28a415a __futex_abstimed_wait_common (libc.so.6 + 0x8a15a)
#1 0x00007fdcf28a6c64 pthread_cond_timedwait@@GLIBC_2.3.2 (libc.so.6 + 0x8cc64)
#2 0x000055953e490ea2 n/a (mariadbd + 0xd75ea2)
#3 0x00007fdcf2bfc4d4 execute_native_thread_routine (libstdc++.so.6 + 0xd54d4)
#4 0x00007fdcf28a75c2 start_thread (libc.so.6 + 0x8d5c2)
#5 0x00007fdcf292c584 __clone (libc.so.6 + 0x112584)
Stack trace of thread 5180:
#0 0x00007fdcf2925a9d syscall (libc.so.6 + 0x10ba9d)
#1 0x000055953e4eefe6 _ZN5tpool9aio_linux23getevent_thread_routineEPS0_ (mariadbd + 0xdd3fe6)
#2 0x00007fdcf2bfc4d4 execute_native_thread_routine (libstdc++.so.6 + 0xd54d4)
#3 0x00007fdcf28a75c2 start_thread (libc.so.6 + 0x8d5c2)
#4 0x00007fdcf292c584 __clone (libc.so.6 + 0x112584)
Stack trace of thread 5184:
#0 0x00007fdcf28a415a __futex_abstimed_wait_common (libc.so.6 + 0x8a15a)
#1 0x00007fdcf28a6f32 pthread_cond_clockwait@GLIBC_2.30 (libc.so.6 + 0x8cf32)
#2 0x000055953e4f22df _ZN5tpool19thread_pool_generic14wait_for_tasksERSt11unique_lockISt5mutexEPNS_11worker_dataE (mariadbd + 0xdd72df)
#3 0x000055953e4f2501 _ZN5tpool19thread_pool_generic8get_taskEPNS_11worker_dataEPPNS_4taskE (mariadbd + 0xdd7501)
#4 0x000055953e4f359f _ZN5tpool19thread_pool_generic11worker_mainEPNS_11worker_dataE (mariadbd + 0xdd859f)
#5 0x00007fdcf2bfc4d4 execute_native_thread_routine (libstdc++.so.6 + 0xd54d4)
#6 0x00007fdcf28a75c2 start_thread (libc.so.6 + 0x8d5c2)
#7 0x00007fdcf292c584 __clone (libc.so.6 + 0x112584)
Stack trace of thread 5183:
#0 0x00007fdcf28a934c __pthread_kill_implementation (libc.so.6 + 0x8f34c)
#1 0x00007fdcf285c4b8 raise (libc.so.6 + 0x424b8)
#2 0x00007fdcf28465c6 abort (libc.so.6 + 0x2c5c6)
#3 0x000055953dcbdce8 n/a (mariadbd + 0x5a2ce8)
#4 0x000055953dc99059 n/a (mariadbd + 0x57e059)
#5 0x000055953dcb6e6e n/a (mariadbd + 0x59be6e)
#6 0x000055953e452565 n/a (mariadbd + 0xd37565)
#7 0x000055953e442340 n/a (mariadbd + 0xd27340)
#8 0x000055953e4f33aa _ZN5tpool10task_group7executeEPNS_4taskE (mariadbd + 0xdd83aa)
#9 0x000055953e4f35d0 _ZN5tpool19thread_pool_generic11worker_mainEPNS_11worker_dataE (mariadbd + 0xdd85d0)
#10 0x00007fdcf2bfc4d4 execute_native_thread_routine (libstdc++.so.6 + 0xd54d4)
#11 0x00007fdcf28a75c2 start_thread (libc.so.6 + 0x8d5c2)
#12 0x00007fdcf292c584 __clone (libc.so.6 + 0x112584)
Stack trace of thread 5189:
#0 0x00007fdcf28a415a __futex_abstimed_wait_common (libc.so.6 + 0x8a15a)
#1 0x00007fdcf28a6960 pthread_cond_wait@@GLIBC_2.3.2 (libc.so.6 + 0x8c960)
#2 0x000055953de6d839 handle_manager (mariadbd + 0x752839)
#3 0x000055953e2ff323 n/a (mariadbd + 0xbe4323)
#4 0x00007fdcf28a75c2 start_thread (libc.so.6 + 0x8d5c2)
#5 0x00007fdcf292c584 __clone (libc.so.6 + 0x112584)
Stack trace of thread 5182:
#0 0x00007fdcf2925a9d syscall (libc.so.6 + 0x10ba9d)
#1 0x00007fdcf2e46221 io_submit (libaio.so.1 + 0x1221)
#2 0x000055953e4ef210 n/a (mariadbd + 0xdd4210)
#3 0x000055953e3dfe8a n/a (mariadbd + 0xcc4e8a)
#4 0x000055953e4bc179 n/a (mariadbd + 0xda1179)
#5 0x000055953e4a0aba n/a (mariadbd + 0xd85aba)
#6 0x000055953e4a18eb n/a (mariadbd + 0xd868eb)
#7 0x000055953e48db1c n/a (mariadbd + 0xd72b1c)
#8 0x000055953e48e20d n/a (mariadbd + 0xd7320d)
#9 0x000055953e4f35e2 _ZN5tpool19thread_pool_generic11worker_mainEPNS_11worker_dataE (mariadbd + 0xdd85e2)
#10 0x00007fdcf2bfc4d4 execute_native_thread_routine (libstdc++.so.6 + 0xd54d4)
#11 0x00007fdcf28a75c2 start_thread (libc.so.6 + 0x8d5c2)
#12 0x00007fdcf292c584 __clone (libc.so.6 + 0x112584)
Stack trace of thread 5197:
#0 0x00007fdcf28a415a __futex_abstimed_wait_common (libc.so.6 + 0x8a15a)
#1 0x00007fdcf28a6c64 pthread_cond_timedwait@@GLIBC_2.3.2 (libc.so.6 + 0x8cc64)
#2 0x000055953dfcb4d3 _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8b04d3)
#3 0x000055953dfcb992 handle_one_connection (mariadbd + 0x8b0992)
#4 0x000055953e2ff323 n/a (mariadbd + 0xbe4323)
#5 0x00007fdcf28a75c2 start_thread (libc.so.6 + 0x8d5c2)
#6 0x00007fdcf292c584 __clone (libc.so.6 + 0x112584)
Stack trace of thread 5195:
#0 0x00007fdcf292e3ce __send (libc.so.6 + 0x1143ce)
#1 0x000055953e236e32 vio_write (mariadbd + 0xb1be32)
#2 0x000055953e21280b net_real_write (mariadbd + 0xaf780b)
#3 0x000055953dd9c8e1 _ZN8Protocol12net_send_eofEP3THDjj (mariadbd + 0x6818e1)
#4 0x000055953dd90f46 _ZN8Protocol13end_statementEv (mariadbd + 0x675f46)
#5 0x000055953de7fdcb _Z16dispatch_command19enum_server_commandP3THDPcjb (mariadbd + 0x764dcb)
#6 0x000055953de82b29 _Z10do_commandP3THDb (mariadbd + 0x767b29)
#7 0x000055953dfcb474 _Z24do_handle_one_connectionP7CONNECTb (mariadbd + 0x8b0474)
#8 0x000055953dfcb992 handle_one_connection (mariadbd + 0x8b0992)
#9 0x000055953e2ff323 n/a (mariadbd + 0xbe4323)
#10 0x00007fdcf28a75c2 start_thread (libc.so.6 + 0x8d5c2)
#11 0x00007fdcf292c584 __clone (libc.so.6 + 0x112584)
Stack trace of thread 5193:
#0 0x00007fdcf28a415a __futex_abstimed_wait_common (libc.so.6 + 0x8a15a)
#1 0x00007fdcf28a6f32 pthread_cond_clockwait@GLIBC_2.30 (libc.so.6 + 0x8cf32)
#2 0x000055953e4f22df _ZN5tpool19thread_pool_generic14wait_for_tasksERSt11unique_lockISt5mutexEPNS_11worker_dataE (mariadbd + 0xdd72df)
#3 0x000055953e4f2501 _ZN5tpool19thread_pool_generic8get_taskEPNS_11worker_dataEPPNS_4taskE (mariadbd + 0xdd7501)
#4 0x000055953e4f359f _ZN5tpool19thread_pool_generic11worker_mainEPNS_11worker_dataE (mariadbd + 0xdd859f)
#5 0x00007fdcf2bfc4d4 execute_native_thread_routine (libstdc++.so.6 + 0xd54d4)
#6 0x00007fdcf28a75c2 start_thread (libc.so.6 + 0x8d5c2)
#7 0x00007fdcf292c584 __clone (libc.so.6 + 0x112584)
Stack trace of thread 5192:
#0 0x00007fdcf28a415a __futex_abstimed_wait_common (libc.so.6 + 0x8a15a)
#1 0x00007fdcf28a6f32 pthread_cond_clockwait@GLIBC_2.30 (libc.so.6 + 0x8cf32)
#2 0x000055953e4f22df _ZN5tpool19thread_pool_generic14wait_for_tasksERSt11unique_lockISt5mutexEPNS_11worker_dataE (mariadbd + 0xdd72df)
#3 0x000055953e4f2501 _ZN5tpool19thread_pool_generic8get_taskEPNS_11worker_dataEPPNS_4taskE (mariadbd + 0xdd7501)
#4 0x000055953e4f359f _ZN5tpool19thread_pool_generic11worker_mainEPNS_11worker_dataE (mariadbd + 0xdd859f)
#5 0x00007fdcf2bfc4d4 execute_native_thread_routine (libstdc++.so.6 + 0xd54d4)
#6 0x00007fdcf28a75c2 start_thread (libc.so.6 + 0x8d5c2)
#7 0x00007fdcf292c584 __clone (libc.so.6 + 0x112584)
Stack trace of thread 5191:
#0 0x00007fdcf28a415a __futex_abstimed_wait_common (libc.so.6 + 0x8a15a)
#1 0x00007fdcf28a6f32 pthread_cond_clockwait@GLIBC_2.30 (libc.so.6 + 0x8cf32)
#2 0x000055953e4f22df _ZN5tpool19thread_pool_generic14wait_for_tasksERSt11unique_lockISt5mutexEPNS_11worker_dataE (mariadbd + 0xdd72df)
#3 0x000055953e4f2501 _ZN5tpool19thread_pool_generic8get_taskEPNS_11worker_dataEPPNS_4taskE (mariadbd + 0xdd7501)
#4 0x000055953e4f359f _ZN5tpool19thread_pool_generic11worker_mainEPNS_11worker_dataE (mariadbd + 0xdd859f)
#5 0x00007fdcf2bfc4d4 execute_native_thread_routine (libstdc++.so.6 + 0xd54d4)
#6 0x00007fdcf28a75c2 start_thread (libc.so.6 + 0x8d5c2)
#7 0x00007fdcf292c584 __clone (libc.so.6 + 0x112584)
Stack trace of thread 5185:
#0 0x00007fdcf28a415a __futex_abstimed_wait_common (libc.so.6 + 0x8a15a)
#1 0x00007fdcf28a6f32 pthread_cond_clockwait@GLIBC_2.30 (libc.so.6 + 0x8cf32)
#2 0x000055953e4f22df _ZN5tpool19thread_pool_generic14wait_for_tasksERSt11unique_lockISt5mutexEPNS_11worker_dataE (mariadbd + 0xdd72df)
#3 0x000055953e4f2501 _ZN5tpool19thread_pool_generic8get_taskEPNS_11worker_dataEPPNS_4taskE (mariadbd + 0xdd7501)
#4 0x000055953e4f359f _ZN5tpool19thread_pool_generic11worker_mainEPNS_11worker_dataE (mariadbd + 0xdd859f)
#5 0x00007fdcf2bfc4d4 execute_native_thread_routine (libstdc++.so.6 + 0xd54d4)
#6 0x00007fdcf28a75c2 start_thread (libc.so.6 + 0x8d5c2)
#7 0x00007fdcf292c584 __clone (libc.so.6 + 0x112584)
Stack trace of thread 5190:
#0 0x00007fdcf28a415a __futex_abstimed_wait_common (libc.so.6 + 0x8a15a)
#1 0x00007fdcf28a6f32 pthread_cond_clockwait@GLIBC_2.30 (libc.so.6 + 0x8cf32)
#2 0x000055953e4f22df _ZN5tpool19thread_pool_generic14wait_for_tasksERSt11unique_lockISt5mutexEPNS_11worker_dataE (mariadbd + 0xdd72df)
#3 0x000055953e4f2501 _ZN5tpool19thread_pool_generic8get_taskEPNS_11worker_dataEPPNS_4taskE (mariadbd + 0xdd7501)
#4 0x000055953e4f359f _ZN5tpool19thread_pool_generic11worker_mainEPNS_11worker_dataE (mariadbd + 0xdd859f)
#5 0x00007fdcf2bfc4d4 execute_native_thread_routine (libstdc++.so.6 + 0xd54d4)
#6 0x00007fdcf28a75c2 start_thread (libc.so.6 + 0x8d5c2)
#7 0x00007fdcf292c584 __clone (libc.so.6 + 0x112584)
Stack trace of thread 5186:
#0 0x00007fdcf28a415a __futex_abstimed_wait_common (libc.so.6 + 0x8a15a)
#1 0x00007fdcf28a6f32 pthread_cond_clockwait@GLIBC_2.30 (libc.so.6 + 0x8cf32)
#2 0x000055953e4f22df _ZN5tpool19thread_pool_generic14wait_for_tasksERSt11unique_lockISt5mutexEPNS_11worker_dataE (mariadbd + 0xdd72df)
#3 0x000055953e4f2501 _ZN5tpool19thread_pool_generic8get_taskEPNS_11worker_dataEPPNS_4taskE (mariadbd + 0xdd7501)
#4 0x000055953e4f359f _ZN5tpool19thread_pool_generic11worker_mainEPNS_11worker_dataE (mariadbd + 0xdd859f)
#5 0x00007fdcf2bfc4d4 execute_native_thread_routine (libstdc++.so.6 + 0xd54d4)
#6 0x00007fdcf28a75c2 start_thread (libc.so.6 + 0x8d5c2)
#7 0x00007fdcf292c584 __clone (libc.so.6 + 0x112584)
ELF object binary architecture: AMD x86-64
Apr 21 19:57:09 n3150 systemd[1]: systemd-coredump@1-5201-0.service: Deactivated successfully.
Apr 21 19:57:09 n3150 kernel: audit: type=1131 audit(1650563829.034:148): pid=1 uid=0 auid=4294967295 ses=4294967295 subj==unconfined msg='unit=systemd-coredump@1-5201-0 comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
Apr 21 19:57:09 n3150 audit[1]: SERVICE_STOP pid=1 uid=0 auid=4294967295 ses=4294967295 subj==unconfined msg='unit=systemd-coredump@1-5201-0 comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
Apr 21 19:57:09 n3150 systemd[1]: systemd-coredump@1-5201-0.service: Consumed 2.193s CPU time.
Apr 21 19:57:09 n3150 akonadiserver[5168]: org.kde.pim.akonadiserver: "\nSql error: Server has gone away QMYSQL: Unable to execute query\nQuery: ALTER TABLE TagAttributeTable ADD COLUMN id BIGINT NOT NULL AUTO_INCREMENT PRIMARY KEY"
Apr 21 19:57:09 n3150 akonadiserver[5168]: org.kde.pim.akonadiserver: Unable to initialize database.