Would help if I read the very helpful - how to create a core file - link that was even in the output...
root@debbie:/home/derick#
coredumpctl debug --debugger-arguments="-batch -ex 'thread apply
all bt full'" /usr/sbin/mariadbd
PID: 77900 (mariadbd)
UID: 124 (mysql)
GID: 134 (mysql)
Signal: 11 (SEGV)
Timestamp: Sat 2025-06-07 15:01:58 UTC (36s ago)
Command Line: /usr/sbin/mariadbd
Executable: /usr/sbin/mariadbd
Control Group: /system.slice/mariadb.service
Unit: mariadb.service
Slice: system.slice
Boot ID: 73cd144f6e9d4838b017b061212a9eb5
Machine ID: e7027c3ebde74f4a870b311db52087a0
Hostname: debbie.e-learndesign.scot
Storage:
/var/lib/systemd/coredump/core.mariadbd.124.73cd144f6e9d4838b017b061212a9eb5.77900.1749308518000000.zst
(present)
Size on Disk: 2.0M
Package: mariadb/1:11.4.7+maria~ubu2404
build-id: 082d7769ab844a0690ee7a7fbf3888d73ca70585
Message: Process 77900 (mariadbd) of user 124 dumped
core.
Module file_key_management.so from deb
mariadb-1:11.4.7+maria~ubu2404.amd64
Module libzstd.so.1 from deb
libzstd-1.5.5+dfsg2-2build1.1.amd64
Module libgcc_s.so.1 from deb
gcc-14-14.2.0-4ubuntu2~24.04.amd64
Module libstdc++.so.6 from deb
gcc-14-14.2.0-4ubuntu2~24.04.amd64
Module libsystemd.so.0 from deb
systemd-255.4-1ubuntu8.6.amd64
Module mariadbd from deb
mariadb-1:11.4.7+maria~ubu2404.amd64
Stack trace of thread 77900:
#0 0x0000701f2b89eb2c
__pthread_kill_implementation (libc.so.6 + 0x9eb2c)
#1 0x0000568f36749aba handle_fatal_signal
(mariadbd + 0xaefaba)
#2 0x0000701f2b845330 __restore_rt (libc.so.6 +
0x45330)
#3 0x0000568f36290615 n/a (mariadbd + 0x636615)
#4 0x0000568f36c9d036 n/a (mariadbd +
0x1043036)
#5 0x0000568f36b1e68d n/a (mariadbd + 0xec468d)
#6 0x0000568f3627cc5a n/a (mariadbd + 0x622c5a)
#7 0x0000568f369f5926 n/a (mariadbd + 0xd9b926)
#8 0x0000568f3674c17c
_Z24ha_initialize_handlertonPv (mariadbd + 0xaf217c)
#9 0x0000568f364705b3 n/a (mariadbd + 0x8165b3)
#10 0x0000568f364707a7 n/a (mariadbd + 0x8167a7)
#11 0x0000568f36476e3c _Z11plugin_initPiPPci
(mariadbd + 0x81ce3c)
#12 0x0000568f36315d65 n/a (mariadbd + 0x6bbd65)
#13 0x0000568f36319f79 _Z11mysqld_mainiPPc
(mariadbd + 0x6bff79)
#14 0x0000701f2b82a1ca __libc_start_call_main
(libc.so.6 + 0x2a1ca)
#15 0x0000701f2b82a28b __libc_start_main_impl
(libc.so.6 + 0x2a28b)
#16 0x0000568f362f3865 _start (mariadbd +
0x699865)
Stack trace of thread 77902:
#0 0x0000701f2b898d71
__futex_abstimed_wait_common64 (libc.so.6 + 0x98d71)
#1 0x0000701f2b89bc8e
__pthread_cond_wait_common (libc.so.6 + 0x9bc8e)
#2 0x0000568f3629a685 psi_cond_timedwait
(mariadbd + 0x640685)
#3 0x0000568f3629a758 n/a (mariadbd + 0x640758)
#4 0x0000568f3694d953 n/a (mariadbd + 0xcf3953)
#5 0x0000701f2b89caa4 start_thread (libc.so.6 +
0x9caa4)
#6 0x0000701f2b929c3c __clone3 (libc.so.6 +
0x129c3c)
Stack trace of thread 77905:
#0 0x0000701f2c802ab0 n/a (liburing.so.2 +
0x2ab0)
#1 0x0000701f2c8030ad __io_uring_get_cqe
(liburing.so.2 + 0x30ad)
#2 0x0000568f36b3fde8 n/a (mariadbd + 0xee5de8)
#3 0x0000701f2bcecdb4 n/a (libstdc++.so.6 +
0xecdb4)
#4 0x0000701f2b89caa4 start_thread (libc.so.6 +
0x9caa4)
#5 0x0000701f2b929c3c __clone3 (libc.so.6 +
0x129c3c)
Stack trace of thread 77904:
#0 0x0000701f2b898d71
__futex_abstimed_wait_common64 (libc.so.6 + 0x98d71)
#1 0x0000701f2b89bc8e
__pthread_cond_wait_common (libc.so.6 + 0x9bc8e)
#2 0x0000568f3629a685 psi_cond_timedwait
(mariadbd + 0x640685)
#3 0x0000568f362545e8 n/a (mariadbd + 0x5fa5e8)
#4 0x0000568f3694d953 n/a (mariadbd + 0xcf3953)
#5 0x0000701f2b89caa4 start_thread (libc.so.6 +
0x9caa4)
#6 0x0000701f2b929c3c __clone3 (libc.so.6 +
0x129c3c)
Stack trace of thread 77907:
#0 0x0000701f2b898d71
__futex_abstimed_wait_common64 (libc.so.6 + 0x98d71)
#1 0x0000701f2b89b7ed
__pthread_cond_wait_common (libc.so.6 + 0x9b7ed)
#2 0x0000568f36aee675 n/a (mariadbd + 0xe94675)
#3 0x0000701f2bcecdb4 n/a (libstdc++.so.6 +
0xecdb4)
#4 0x0000701f2b89caa4 start_thread (libc.so.6 +
0x9caa4)
#5 0x0000701f2b929c3c __clone3 (libc.so.6 +
0x129c3c)
Stack trace of thread 77906:
#0 0x0000701f2b91b4cd __GI___poll (libc.so.6 +
0x11b4cd)
#1 0x0000568f36ae952d n/a (mariadbd + 0xe8f52d)
#2 0x0000701f2bcecdb4 n/a (libstdc++.so.6 +
0xecdb4)
#3 0x0000701f2b89caa4 start_thread (libc.so.6 +
0x9caa4)
#4 0x0000701f2b929c3c __clone3 (libc.so.6 +
0x129c3c)
ELF object binary architecture: AMD x86-64
warning: Can't open file anon_inode:[io_uring] which was
expanded to anon_inode:[io_uring] during file-backed mapping
note processing
[New LWP 77900]
[New LWP 77902]
[New LWP 77905]
[New LWP 77904]
[New LWP 77907]
[New LWP 77906]
warning: could not find '.gnu_debugaltlink' file for
/usr/lib/x86_64-linux-gnu/libtcmalloc.so
warning: could not find '.gnu_debugaltlink' file for
/lib/x86_64-linux-gnu/liburing.so.2
warning: could not find '.gnu_debugaltlink' file for
/lib/x86_64-linux-gnu/libcap.so.2
[Thread debugging using libthread_db enabled]
Using host libthread_db library
"/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `/usr/sbin/mariadbd'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 __pthread_kill_implementation (no_tid=0, signo=11,
threadid=<optimized out>) at ./nptl/pthread_kill.c:44
warning: 44 ./nptl/pthread_kill.c: No such file or directory
[Current thread is 1 (Thread 0x701f2be95000 (LWP 77900))]
Thread 6 (Thread 0x7019a1bff6c0 (LWP 77906)):
#0 0x0000701f2b91b4cd in __GI___poll (fds=0x568f37ebbe80,
nfds=3, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
sc_ret = -516
sc_cancel_oldtype = 0
sc_ret = <optimized out>
#1 0x0000568f36ae952d in ?? ()
No symbol table info available.
#2 0x0000701f2bcecdb4 in ?? () from
/lib/x86_64-linux-gnu/libstdc++.so.6
No symbol table info available.
#3 0x0000701f2b89caa4 in start_thread (arg=<optimized
out>) at ./nptl/pthread_create.c:447
ret = <optimized out>
pd = <optimized out>
out = <optimized out>
unwind_buf = {cancel_jmp_buf = {{jmp_buf =
{123255390205632, -8149018567210979406, 123255390205632, -584,
0, 140726198897104, -8149018567231950926, -8149885138259824718},
mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data =
{prev = 0x0, cleanup = 0x0, canceltype = 0}}}
not_first_call = <optimized out>
#4 0x0000701f2b929c3c in clone3 () at
../sysdeps/unix/sysv/linux/x86_64/clone3.S:78
No locals.
Thread 5 (Thread 0x7019a13fe6c0 (LWP 77907)):
#0 0x0000701f2b898d71 in __futex_abstimed_wait_common64
(private=28703, cancel=true, abstime=0x0, op=393, expected=0,
futex_word=0x568f37560468) at ./nptl/futex-internal.c:57
sc_cancel_oldtype = 0
sc_ret = <optimized out>
resultvar = <optimized out>
__arg6 = <optimized out>
__arg5 = <optimized out>
__arg4 = <optimized out>
__arg3 = <optimized out>
__arg2 = <optimized out>
__arg1 = <optimized out>
_a6 = <optimized out>
_a5 = <optimized out>
_a4 = <optimized out>
_a3 = <optimized out>
_a2 = <optimized out>
_a1 = <optimized out>
#1 __futex_abstimed_wait_common (cancel=true, private=28703,
abstime=0x0, clockid=0, expected=0, futex_word=0x568f37560468)
at ./nptl/futex-internal.c:87
err = <optimized out>
clockbit = 256
op = 393
err = <optimized out>
clockbit = <optimized out>
op = <optimized out>
#2 __GI___futex_abstimed_wait_cancelable64
(futex_word=futex_word@entry=0x568f37560468,
expected=expected@entry=0, clockid=clockid@entry=0,
abstime=abstime@entry=0x0, private=private@entry=0) at
./nptl/futex-internal.c:139
No locals.
#3 0x0000701f2b89b7ed in __pthread_cond_wait_common
(abstime=0x0, clockid=0, mutex=0x568f375603c0,
cond=0x568f37560440) at ./nptl/pthread_cond_wait.c:503
spin = 0
buffer = {__routine = 0x701f2b89b4b0
<__condvar_cleanup_waiting>, __arg = 0x7019a13fdbf0,
__canceltype = -1589650416, __prev = 0x0}
cbuffer = {wseq = 2, cond = 0x568f37560440, mutex =
0x568f375603c0, private = 0}
err = <optimized out>
g = 0
flags = <optimized out>
g1_start = <optimized out>
maxspin = 0
signals = <optimized out>
result = 0
wseq = 2
seq = 1
private = 0
maxspin = <optimized out>
err = <optimized out>
result = <optimized out>
wseq = <optimized out>
g = <optimized out>
seq = <optimized out>
flags = <optimized out>
private = <optimized out>
signals = <optimized out>
done = <optimized out>
g1_start = <optimized out>
spin = <optimized out>
buffer = <optimized out>
cbuffer = <optimized out>
s = <optimized out>
#4 ___pthread_cond_wait (cond=0x568f37560440,
mutex=0x568f375603c0) at ./nptl/pthread_cond_wait.c:627
No locals.
#5 0x0000568f36aee675 in ?? ()
No symbol table info available.
#6 0x0000701f2bcecdb4 in ?? () from
/lib/x86_64-linux-gnu/libstdc++.so.6
No symbol table info available.
#7 0x0000701f2b89caa4 in start_thread (arg=<optimized
out>) at ./nptl/pthread_create.c:447
ret = <optimized out>
pd = <optimized out>
out = <optimized out>
unwind_buf = {cancel_jmp_buf = {{jmp_buf =
{123255381812928, -8149017468236222542, 123255381812928, -584,
0, 140726198897792, -8149017468257194062, -8149885138259824718},
mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data =
{prev = 0x0, cleanup = 0x0, canceltype = 0}}}
not_first_call = <optimized out>
#8 0x0000701f2b929c3c in clone3 () at
../sysdeps/unix/sysv/linux/x86_64/clone3.S:78
No locals.
Thread 4 (Thread 0x701f233c56c0 (LWP 77904)):
#0 0x0000701f2b898d71 in __futex_abstimed_wait_common64
(private=0, cancel=true, abstime=0x701f233c4c90, op=393,
expected=0, futex_word=0x568f37e7eca8) at
./nptl/futex-internal.c:57
sc_cancel_oldtype = 0
sc_ret = <optimized out>
resultvar = <optimized out>
__arg6 = <optimized out>
__arg5 = <optimized out>
__arg4 = <optimized out>
__arg3 = <optimized out>
__arg2 = <optimized out>
__arg1 = <optimized out>
_a6 = <optimized out>
_a5 = <optimized out>
_a4 = <optimized out>
_a3 = <optimized out>
_a2 = <optimized out>
_a1 = <optimized out>
#1 __futex_abstimed_wait_common (cancel=true, private=0,
abstime=0x701f233c4c90, clockid=0, expected=0,
futex_word=0x568f37e7eca8) at ./nptl/futex-internal.c:87
err = <optimized out>
clockbit = 256
op = 393
err = <optimized out>
clockbit = <optimized out>
op = <optimized out>
#2 __GI___futex_abstimed_wait_cancelable64
(futex_word=futex_word@entry=0x568f37e7eca8,
expected=expected@entry=0, clockid=clockid@entry=0,
abstime=abstime@entry=0x701f233c4c90, private=private@entry=0)
at ./nptl/futex-internal.c:139
No locals.
#3 0x0000701f2b89bc8e in __pthread_cond_wait_common
(abstime=0x701f233c4c90, clockid=0, mutex=0x568f37e7ecc0,
cond=0x568f37e7ec80) at ./nptl/pthread_cond_wait.c:503
spin = 0
buffer = {__routine = 0x701f2b89b4b0
<__condvar_cleanup_waiting>, __arg = 0x701f233c4b50,
__canceltype = 591154096, __prev = 0x0}
cbuffer = {wseq = 0, cond = 0x568f37e7ec80, mutex =
0x568f37e7ecc0, private = 0}
err = <optimized out>
g = 0
flags = <optimized out>
g1_start = <optimized out>
maxspin = 0
signals = <optimized out>
result = 0
wseq = 0
seq = 0
private = 0
maxspin = <optimized out>
err = <optimized out>
result = <optimized out>
wseq = <optimized out>
g = <optimized out>
seq = <optimized out>
flags = <optimized out>
private = <optimized out>
signals = <optimized out>
done = <optimized out>
g1_start = <optimized out>
spin = <optimized out>
buffer = <optimized out>
cbuffer = <optimized out>
s = <optimized out>
#4 ___pthread_cond_timedwait64 (cond=0x568f37e7ec80,
mutex=0x568f37e7ecc0, abstime=0x701f233c4c90) at
./nptl/pthread_cond_wait.c:652
flags = <optimized out>
clockid = 0
#5 0x0000568f3629a685 in psi_cond_timedwait ()
No symbol table info available.
#6 0x0000568f362545e8 in ?? ()
No symbol table info available.
#7 0x0000568f3694d953 in ?? ()
No symbol table info available.
#8 0x0000701f2b89caa4 in start_thread (arg=<optimized
out>) at ./nptl/pthread_create.c:447
ret = <optimized out>
pd = <optimized out>
out = <optimized out>
unwind_buf = {cancel_jmp_buf = {{jmp_buf =
{123279037454016, -8149866270274900046, 123279037454016, -584,
0, 140726198900064, -8149866270295871566, -8149885138259824718},
mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data =
{prev = 0x0, cleanup = 0x0, canceltype = 0}}}
not_first_call = <optimized out>
#9 0x0000701f2b929c3c in clone3 () at
../sysdeps/unix/sysv/linux/x86_64/clone3.S:78
No locals.
Thread 3 (Thread 0x701f22bc46c0 (LWP 77905)):
#0 0x0000701f2c802ab0 in ?? () from
/lib/x86_64-linux-gnu/liburing.so.2
No symbol table info available.
#1 0x0000701f2c8030ad in __io_uring_get_cqe () from
/lib/x86_64-linux-gnu/liburing.so.2
No symbol table info available.
#2 0x0000568f36b3fde8 in ?? ()
No symbol table info available.
#3 0x0000701f2bcecdb4 in ?? () from
/lib/x86_64-linux-gnu/libstdc++.so.6
No symbol table info available.
#4 0x0000701f2b89caa4 in start_thread (arg=<optimized
out>) at ./nptl/pthread_create.c:447
ret = <optimized out>
pd = <optimized out>
out = <optimized out>
unwind_buf = {cancel_jmp_buf = {{jmp_buf =
{123279029061312, -8149869569346654286, 123279029061312, -584,
0, 140726198897312, -8149869569367625806, -8149885138259824718},
mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data =
{prev = 0x0, cleanup = 0x0, canceltype = 0}}}
not_first_call = <optimized out>
#5 0x0000701f2b929c3c in clone3 () at
../sysdeps/unix/sysv/linux/x86_64/clone3.S:78
No locals.
Thread 2 (Thread 0x701f2be916c0 (LWP 77902)):
#0 0x0000701f2b898d71 in __futex_abstimed_wait_common64
(private=0, cancel=true, abstime=0x701f2be90c90, op=393,
expected=0, futex_word=0x568f37603a4c) at
./nptl/futex-internal.c:57
sc_cancel_oldtype = 0
sc_ret = <optimized out>
resultvar = <optimized out>
__arg6 = <optimized out>
__arg5 = <optimized out>
__arg4 = <optimized out>
__arg3 = <optimized out>
__arg2 = <optimized out>
__arg1 = <optimized out>
_a6 = <optimized out>
_a5 = <optimized out>
_a4 = <optimized out>
_a3 = <optimized out>
_a2 = <optimized out>
_a1 = <optimized out>
#1 __futex_abstimed_wait_common (cancel=true, private=0,
abstime=0x701f2be90c90, clockid=0, expected=0,
futex_word=0x568f37603a4c) at ./nptl/futex-internal.c:87
err = <optimized out>
clockbit = 256
op = 393
err = <optimized out>
clockbit = <optimized out>
op = <optimized out>
#2 __GI___futex_abstimed_wait_cancelable64
(futex_word=futex_word@entry=0x568f37603a4c,
expected=expected@entry=0, clockid=clockid@entry=0,
abstime=abstime@entry=0x701f2be90c90, private=private@entry=0)
at ./nptl/futex-internal.c:139
No locals.
#3 0x0000701f2b89bc8e in __pthread_cond_wait_common
(abstime=0x701f2be90c90, clockid=0, mutex=0x568f37603a60,
cond=0x568f37603a20) at ./nptl/pthread_cond_wait.c:503
spin = 0
buffer = {__routine = 0x701f2b89b4b0
<__condvar_cleanup_waiting>, __arg = 0x701f2be90b80,
__canceltype = 0, __prev = 0x0}
cbuffer = {wseq = 9, cond = 0x568f37603a20, mutex =
0x568f37603a60, private = 0}
err = <optimized out>
g = 1
flags = <optimized out>
g1_start = <optimized out>
maxspin = 0
signals = <optimized out>
result = 0
wseq = 9
seq = 4
private = 0
maxspin = <optimized out>
err = <optimized out>
result = <optimized out>
wseq = <optimized out>
g = <optimized out>
seq = <optimized out>
flags = <optimized out>
private = <optimized out>
signals = <optimized out>
done = <optimized out>
g1_start = <optimized out>
spin = <optimized out>
buffer = <optimized out>
cbuffer = <optimized out>
s = <optimized out>
#4 ___pthread_cond_timedwait64 (cond=0x568f37603a20,
mutex=0x568f37603a60, abstime=0x701f2be90c90) at
./nptl/pthread_cond_wait.c:652
flags = <optimized out>
clockid = 0
#5 0x0000568f3629a685 in psi_cond_timedwait ()
No symbol table info available.
#6 0x0000568f3629a758 in ?? ()
No symbol table info available.
#7 0x0000568f3694d953 in ?? ()
No symbol table info available.
#8 0x0000701f2b89caa4 in start_thread (arg=<optimized
out>) at ./nptl/pthread_create.c:447
ret = <optimized out>
pd = <optimized out>
out = <optimized out>
unwind_buf = {cancel_jmp_buf = {{jmp_buf =
{123279182993088, -8149885419386589262, 123279182993088, -584,
2, 140726198904720, -8149885419407560782, -8149885138259824718},
mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data =
{prev = 0x0, cleanup = 0x0, canceltype = 0}}}
not_first_call = <optimized out>
#9 0x0000701f2b929c3c in clone3 () at
../sysdeps/unix/sysv/linux/x86_64/clone3.S:78
No locals.
Thread 1 (Thread 0x701f2be95000 (LWP 77900)):
#0 __pthread_kill_implementation (no_tid=0, signo=11,
threadid=<optimized out>) at ./nptl/pthread_kill.c:44
tid = <optimized out>
ret = 0
pd = <optimized out>
old_mask = {__val = {7595448454083406198}}
ret = <optimized out>
pd = <optimized out>
old_mask = <optimized out>
ret = <optimized out>
tid = <optimized out>
ret = <optimized out>
resultvar = <optimized out>
resultvar = <optimized out>
__arg3 = <optimized out>
__arg2 = <optimized out>
__arg1 = <optimized out>
_a3 = <optimized out>
_a2 = <optimized out>
_a1 = <optimized out>
__futex = <optimized out>
resultvar = <optimized out>
__arg3 = <optimized out>
__arg2 = <optimized out>
__arg1 = <optimized out>
_a3 = <optimized out>
_a2 = <optimized out>
_a1 = <optimized out>
__futex = <optimized out>
__private = <optimized out>
__oldval = <optimized out>
#1 __pthread_kill_internal (signo=11, threadid=<optimized
out>) at ./nptl/pthread_kill.c:78
No locals.
#2 __GI___pthread_kill (threadid=<optimized out>,
signo=11) at ./nptl/pthread_kill.c:89
No locals.
#3 0x0000568f36749aba in handle_fatal_signal ()
No symbol table info available.
#4 <signal handler called>
No locals.
#5 0x0000568f36290615 in ?? ()
No symbol table info available.
#6 0x0000568f36c9d036 in ?? ()
No symbol table info available.
#7 0x0000568f36b1e68d in ?? ()
No symbol table info available.
#8 0x0000568f3627cc5a in ?? ()
No symbol table info available.
#9 0x0000568f369f5926 in ?? ()
No symbol table info available.
#10 0x0000568f3674c17c in ha_initialize_handlerton(void*) ()
No symbol table info available.
#11 0x0000568f364705b3 in ?? ()
No symbol table info available.
#12 0x0000568f364707a7 in ?? ()
No symbol table info available.
#13 0x0000568f36476e3c in plugin_init(int*, char**, int) ()
No symbol table info available.
#14 0x0000568f36315d65 in ?? ()
No symbol table info available.
#15 0x0000568f36319f79 in mysqld_main(int, char**) ()
No symbol table info available.
#16 0x0000701f2b82a1ca in __libc_start_call_main
(main=main@entry=0x568f362b2390 <main>, argc=argc@entry=1,
argv=argv@entry=0x7ffd5f18d438) at
../sysdeps/nptl/libc_start_call_main.h:58
self = <optimized out>
result = <optimized out>
unwind_buf = {cancel_jmp_buf = {{jmp_buf =
{140726198916152, -7989065198477267022, 1, 0, 95173106871664,
123279196151808, -7989065198491947086, -8149885079415312462},
mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x568f374b8168,
0x7ffd5f18d438}, data = {prev = 0x0, cleanup = 0x0, canceltype =
927695208}}}
not_first_call = <optimized out>
#17 0x0000701f2b82a28b in __libc_start_main_impl
(main=0x568f362b2390 <main>, argc=1, argv=0x7ffd5f18d438,
init=<optimized out>, fini=<optimized out>,
rtld_fini=<optimized out>, stack_end=0x7ffd5f18d428) at
../csu/libc-start.c:360
No locals.
#18 0x0000568f362f3865 in _start ()
No symbol table info available.
Thanks Sergie
Been a while since I've worked with core dumps. Gdd is telling me the crash files are not a recognised file format. Installed systemd-coredump instead and got this from coredumpctl dump --output=core
PID: 45641 (mariadbd)
UID: 124 (mysql)
GID: 134 (mysql)
Signal: 11 (SEGV)
Timestamp: Sat 2025-06-07 14:43:13 UTC (3s ago)
Command Line: /usr/sbin/mariadbd
Executable: /usr/sbin/mariadbd
Control Group: /system.slice/mariadb.service
Unit: mariadb.service
Slice: system.slice
Boot ID: 73cd144f6e9d4838b017b061212a9eb5
Machine ID: e7027c3ebde74f4a870b311db52087a0
Hostname: debbie.e-learndesign.scot
Storage: /var/lib/systemd/coredump/core.mariadbd.124.73cd144f6e9d4838b017b061212a9eb5.45641.1749307393000000.zst (present)
Size on Disk: 2.0M
Package: mariadb/1:11.4.7+maria~ubu2404
build-id: 082d7769ab844a0690ee7a7fbf3888d73ca70585
Message: Process 45641 (mariadbd) of user 124 dumped core.
Module file_key_management.so from deb mariadb-1:11.4.7+maria~ubu2404.amd64
Module libzstd.so.1 from deb libzstd-1.5.5+dfsg2-2build1.1.amd64
Module libgcc_s.so.1 from deb gcc-14-14.2.0-4ubuntu2~24.04.amd64
Module libstdc++.so.6 from deb gcc-14-14.2.0-4ubuntu2~24.04.amd64
Module libsystemd.so.0 from deb systemd-255.4-1ubuntu8.6.amd64
Module mariadbd from deb mariadb-1:11.4.7+maria~ubu2404.amd64
Stack trace of thread 45641:
#0 0x0000702f1cc4553b __kill (libc.so.6 + 0x4553b)
#1 0x00005fcc1521fa76 handle_fatal_signal (mariadbd + 0xaefa76)
#2 0x0000702f1cc45330 __restore_rt (libc.so.6 + 0x45330)
#3 0x00005fcc14d66615 n/a (mariadbd + 0x636615)
#4 0x00005fcc15773036 n/a (mariadbd + 0x1043036)
#5 0x00005fcc155f468d n/a (mariadbd + 0xec468d)
#6 0x00005fcc14d52c5a n/a (mariadbd + 0x622c5a)
#7 0x00005fcc154cb926 n/a (mariadbd + 0xd9b926)
#8 0x00005fcc1522217c _Z24ha_initialize_handlertonPv (mariadbd + 0xaf217c)
#9 0x00005fcc14f465b3 n/a (mariadbd + 0x8165b3)
#10 0x00005fcc14f467a7 n/a (mariadbd + 0x8167a7)
#11 0x00005fcc14f4ce3c _Z11plugin_initPiPPci (mariadbd + 0x81ce3c)
#12 0x00005fcc14debd65 n/a (mariadbd + 0x6bbd65)
#13 0x00005fcc14deff79 _Z11mysqld_mainiPPc (mariadbd + 0x6bff79)
#14 0x0000702f1cc2a1ca __libc_start_call_main (libc.so.6 + 0x2a1ca)
#15 0x0000702f1cc2a28b __libc_start_main_impl (libc.so.6 + 0x2a28b)
#16 0x00005fcc14dc9865 _start (mariadbd + 0x699865)
Stack trace of thread 45645:
#0 0x0000702f1cc98d71 __futex_abstimed_wait_common64 (libc.so.6 + 0x98d71)
#1 0x0000702f1cc9bc8e __pthread_cond_wait_common (libc.so.6 + 0x9bc8e)
#2 0x00005fcc14d70685 psi_cond_timedwait (mariadbd + 0x640685)
#3 0x00005fcc14d2a5e8 n/a (mariadbd + 0x5fa5e8)
#4 0x00005fcc15423953 n/a (mariadbd + 0xcf3953)
#5 0x0000702f1cc9caa4 start_thread (libc.so.6 + 0x9caa4)
#6 0x0000702f1cd29c3c __clone3 (libc.so.6 + 0x129c3c)
Stack trace of thread 45643:
#0 0x0000702f1cc98d71 __futex_abstimed_wait_common64 (libc.so.6 + 0x98d71)
#1 0x0000702f1cc9bc8e __pthread_cond_wait_common (libc.so.6 + 0x9bc8e)
#2 0x00005fcc14d70685 psi_cond_timedwait (mariadbd + 0x640685)
#3 0x00005fcc14d70758 n/a (mariadbd + 0x640758)
#4 0x00005fcc15423953 n/a (mariadbd + 0xcf3953)
#5 0x0000702f1cc9caa4 start_thread (libc.so.6 + 0x9caa4)
#6 0x0000702f1cd29c3c __clone3 (libc.so.6 + 0x129c3c)
Stack trace of thread 45646:
#0 0x0000702f1db76ab0 n/a (liburing.so.2 + 0x2ab0)
#1 0x0000702f1db770ad __io_uring_get_cqe (liburing.so.2 + 0x30ad)
#2 0x00005fcc15615de8 n/a (mariadbd + 0xee5de8)
#3 0x0000702f1d0ecdb4 n/a (libstdc++.so.6 + 0xecdb4)
#4 0x0000702f1cc9caa4 start_thread (libc.so.6 + 0x9caa4)
#5 0x0000702f1cd29c3c __clone3 (libc.so.6 + 0x129c3c)
Stack trace of thread 45648:
#0 0x0000702f1cc98d71 __futex_abstimed_wait_common64 (libc.so.6 + 0x98d71)
#1 0x0000702f1cc9b7ed __pthread_cond_wait_common (libc.so.6 + 0x9b7ed)
#2 0x00005fcc155c4675 n/a (mariadbd + 0xe94675)
#3 0x0000702f1d0ecdb4 n/a (libstdc++.so.6 + 0xecdb4)
#4 0x0000702f1cc9caa4 start_thread (libc.so.6 + 0x9caa4)
#5 0x0000702f1cd29c3c __clone3 (libc.so.6 + 0x129c3c)
Stack trace of thread 45647:
#0 0x0000702f1cd1b4cd __GI___poll (libc.so.6 + 0x11b4cd)
#1 0x00005fcc155bf52d n/a (mariadbd + 0xe8f52d)
#2 0x0000702f1d0ecdb4 n/a (libstdc++.so.6 + 0xecdb4)
#3 0x0000702f1cc9caa4 start_thread (libc.so.6 + 0x9caa4)
#4 0x0000702f1cd29c3c __clone3 (libc.so.6 + 0x129c3c)
ELF object binary architecture: AMD x86-64
Before this I also installed mariadb-server-dbgsym and the entry in the error log looks like:
2025-06-07 14:47:21 0 [Note] Starting MariaDB 11.4.7-MariaDB-ubu2404-log source revision 118cfcf82107188f2295631193658b2ef94f4f3f server_uid 6IX+WeD2vga5XxJDcZUY249RO+s= as process 52898
2025-06-07 14:47:21 0 [Note] InnoDB: Compressed tables use zlib 1.3
2025-06-07 14:47:21 0 [Note] InnoDB: Number of transaction pools: 1
2025-06-07 14:47:21 0 [Note] InnoDB: Using crc32 + pclmulqdq instructions
2025-06-07 14:47:21 0 [Note] InnoDB: Using liburing
2025-06-07 14:47:21 0 [Note] InnoDB: innodb_buffer_pool_size_max=22528m, innodb_buffer_pool_size=22528m
2025-06-07 14:47:21 0 [Note] InnoDB: Initialized memory pressure event listener
2025-06-07 14:47:21 0 [Note] InnoDB: Completed initialization of buffer pool
2025-06-07 14:47:21 0 [Note] InnoDB: File system buffers for log disabled (block size=512 bytes)
2025-06-07 14:47:21 0 [Note] InnoDB: Resetting space id's in the doublewrite buffer
2025-06-07 14:47:21 0 [Note] InnoDB: End of log at LSN=43439159458895
2025-06-07 14:47:21 0 [Note] InnoDB: Opened 3 undo tablespaces
2025-06-07 14:47:21 0 [Note] InnoDB: 128 rollback segments in 3 undo tablespaces are active.
2025-06-07 14:47:21 0 [Warning] InnoDB: Cannot free the unused segments in system tablespace because a previous shutdown was not with innodb_fast_shutdown=0 or XA PREPARE transactions exist
2025-06-07 14:47:22 0 [Note] InnoDB: System tablespace defragmentation process starts
2025-06-07 14:47:22 0 [Note] InnoDB: Moving the data from extents 15552 through 2452672
250607 14:47:22 [ERROR] /usr/sbin/mariadbd got signal 11 ;
Sorry, we probably made a mistake, and this is a bug.
Your assistance in bug reporting will enable us to fix this for the next release.
To report this bug, see https://mariadb.com/kb/en/reporting-bugs about how to report
a bug on https://jira.mariadb.org/.
Please include the information from the server start above, to the end of the
information below.
Server version: 11.4.7-MariaDB-ubu2404-log source revision: 118cfcf82107188f2295631193658b2ef94f4f3f
The information page at https://mariadb.com/kb/en/how-to-produce-a-full-stack-trace-for-mariadbd/
contains instructions to obtain a better version of the backtrace below.
Following these instructions will help MariaDB developers provide a fix quicker.
Attempting backtrace. Include this in the bug report.
(note: Retrieving this information may fail)
Thread pointer: 0x0
stack_bottom = 0x0 thread_stack 0x30000
/usr/sbin/mariadbd(my_print_stacktrace+0x30)[0x63a1fcb51560]
/usr/sbin/mariadbd(handle_fatal_signal+0x2a1)[0x63a1fc6eaae1]
libc_sigaction.c:0(__restore_rt)[0x714484045330]
/usr/sbin/mariadbd(+0x636615)[0x63a1fc231615]
/usr/sbin/mariadbd(+0x1043036)[0x63a1fcc3e036]
/usr/sbin/mariadbd(+0xec468d)[0x63a1fcabf68d]
/usr/sbin/mariadbd(+0x622c5a)[0x63a1fc21dc5a]
/usr/sbin/mariadbd(+0xd9b926)[0x63a1fc996926]
/usr/sbin/mariadbd(_Z24ha_initialize_handlertonPv+0x8c)[0x63a1fc6ed17c]
/usr/sbin/mariadbd(+0x8165b3)[0x63a1fc4115b3]
/usr/sbin/mariadbd(+0x8167a7)[0x63a1fc4117a7]
/usr/sbin/mariadbd(_Z11plugin_initPiPPci+0xbfc)[0x63a1fc417e3c]
/usr/sbin/mariadbd(+0x6bbd65)[0x63a1fc2b6d65]
/usr/sbin/mariadbd(_Z11mysqld_mainiPPc+0xf79)[0x63a1fc2baf79]
x86/libc-start.c:74(__libc_start_call_main)[0x71448402a1ca]
csu/libc-start.c:128(call_init)[0x71448402a28b]
/usr/sbin/mariadbd(_start+0x25)[0x63a1fc294865]
Writing a core file...
Working directory at /var/lib/mysql
Resource Limits (excludes unlimited resources):
Limit Soft Limit Hard Limit Units
Max stack size 8388608 unlimited bytes
Max core file size 0 unlimited bytes
Max processes 139959 139959 processes
Max open files 1048576 1048576 files
Max locked memory 524288 524288 bytes
Max pending signals 139959 139959 signals
Max msgqueue size 819200 819200 bytes
Max nice priority 0 0
Max realtime priority 0 0
Core pattern: |/usr/lib/systemd/systemd-coredump %P %u %g %s %t 9223372036854775808 %h
Kernel version: Linux version 6.8.0-60-generic (buildd@lcy02-amd64-054) (x86_64-linux-gnu-gcc-13 (Ubuntu 13.3.0-6ubuntu2~24.04) 13.3.0, GNU ld (GNU Binutils for Ubuntu) 2.42) #63-Ubuntu SMP PREEMPT_DYNAMIC Tue Apr 15 19:04:15 UTC 2025
2025-06-07 14:47:29 0 [Note] Starting MariaDB 11.4.7-MariaDB-ubu2404-log source revision 118cfcf82107188f2295631193658b2ef94f4f3f server_uid 6IX+WeD2vga5XxJDcZUY249RO+s= as process 53111
2025-06-07 14:47:29 0 [Note] InnoDB: Compressed tables use zlib 1.3
2025-06-07 14:47:29 0 [Note] InnoDB: Number of transaction pools: 1
2025-06-07 14:47:29 0 [Note] InnoDB: Using crc32 + pclmulqdq instructions
2025-06-07 14:47:29 0 [Note] InnoDB: Using liburing
2025-06-07 14:47:29 0 [Note] InnoDB: innodb_buffer_pool_size_max=22528m, innodb_buffer_pool_size=22528m
2025-06-07 14:47:29 0 [Note] InnoDB: Initialized memory pressure event listener
2025-06-07 14:47:29 0 [Note] InnoDB: Completed initialization of buffer pool
2025-06-07 14:47:29 0 [Note] InnoDB: File system buffers for log disabled (block size=512 bytes)
2025-06-07 14:47:29 0 [Note] InnoDB: Resetting space id's in the doublewrite buffer
2025-06-07 14:47:29 0 [Note] InnoDB: End of log at LSN=43439159458895
2025-06-07 14:47:29 0 [Note] InnoDB: Opened 3 undo tablespaces
2025-06-07 14:47:29 0 [Note] InnoDB: 128 rollback segments in 3 undo tablespaces are active.
2025-06-07 14:47:29 0 [Warning] InnoDB: Cannot free the unused segments in system tablespace because a previous shutdown was not with innodb_fast_shutdown=0 or XA PREPARE transactions exist
2025-06-07 14:47:30 0 [Note] InnoDB: System tablespace defragmentation process starts
2025-06-07 14:47:30 0 [Note] InnoDB: Moving the data from extents 15552 through 2452672
250607 14:47:30 [ERROR] /usr/sbin/mariadbd got signal 11 ;
Sorry, we probably made a mistake, and this is a bug.
Your assistance in bug reporting will enable us to fix this for the next release.
To report this bug, see https://mariadb.com/kb/en/reporting-bugs about how to report
a bug on https://jira.mariadb.org/.
Please include the information from the server start above, to the end of the
information below.
Server version: 11.4.7-MariaDB-ubu2404-log source revision: 118cfcf82107188f2295631193658b2ef94f4f3f
The information page at https://mariadb.com/kb/en/how-to-produce-a-full-stack-trace-for-mariadbd/
contains instructions to obtain a better version of the backtrace below.
Following these instructions will help MariaDB developers provide a fix quicker.
Attempting backtrace. Include this in the bug report.
(note: Retrieving this information may fail)
Thread pointer: 0x0
stack_bottom = 0x0 thread_stack 0x30000
/usr/sbin/mariadbd(my_print_stacktrace+0x30)[0x64ab42e73560]
/usr/sbin/mariadbd(handle_fatal_signal+0x2a1)[0x64ab42a0cae1]
libc_sigaction.c:0(__restore_rt)[0x7ebd14245330]
Open file limits are off in this. /etc/security/limits.conf has unlimited for files for mysql and systemd config file has LimitNOFILE=2097152. Currently trying to track down why that is.
Kind regards
Derick
On 07/06/2025 15:07, Sergei Golubchik via discuss wrote:
Hi, Derick, On Jun 07, Derick Turner via discuss wrote:Hi all, Patching one of our spare servers this morning and ran into a couple of issues. The first was a complaint in the service status:...Thread pointer: 0x0 stack_bottom = 0x0 thread_stack 0x30000 /usr/sbin/mariadbd(my_print_stacktrace+0x30)[0x5a41189db560] /usr/sbin/mariadbd(handle_fatal_signal+0x2a1)[0x5a4118574ae1] /lib/x86_64-linux-gnu/libc.so.6(+0x45330)[0x7650bf845330] /usr/sbin/mariadbd(+0x636615)[0x5a41180bb615] /usr/sbin/mariadbd(+0x1043036)[0x5a4118ac8036] /usr/sbin/mariadbd(+0xec468d)[0x5a411894968d] /usr/sbin/mariadbd(+0x622c5a)[0x5a41180a7c5a] /usr/sbin/mariadbd(+0xd9b926)[0x5a4118820926] /usr/sbin/mariadbd(_Z24ha_initialize_handlertonPv+0x8c)[0x5a411857717c] /usr/sbin/mariadbd(+0x8165b3)[0x5a411829b5b3] /usr/sbin/mariadbd(+0x8167a7)[0x5a411829b7a7] /usr/sbin/mariadbd(_Z11plugin_initPiPPci+0xbfc)[0x5a41182a1e3c] /usr/sbin/mariadbd(+0x6bbd65)[0x5a4118140d65] /usr/sbin/mariadbd(_Z11mysqld_mainiPPc+0xf79)[0x5a4118144f79] /lib/x86_64-linux-gnu/libc.so.6(+0x2a1ca)[0x7650bf82a1ca] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x8b)[0x7650bf82a28b] /usr/sbin/mariadbd(_start+0x25)[0x5a411811e865] Writing a core file... Working directory at /var/lib/mysql Is there anything I'm missing before I raise this as a bug?yes, please install dbgsym packages to get a better stack trace. or load the core dump (that was written above) in gdb and run `thread apply all bt`. Someone will ask you do it after you raise a bug anyway, so you can as well be prepared. Regards, Sergei Chief Architect, MariaDB Server and security@mariadb.org _______________________________________________ discuss mailing list -- discuss@lists.mariadb.org To unsubscribe send an email to discuss-leave@lists.mariadb.org-- Derick Turner - He/Him Managing Director e-Learn Design Ltd | Scotland's Moodle Partner T +44 (0)845 474 4512 | M +44 (0)7808 068 797 | www.e-learndesign.co.uk
_______________________________________________ discuss mailing list -- discuss@lists.mariadb.org To unsubscribe send an email to discuss-leave@lists.mariadb.org
-- Derick Turner - He/Him Managing Director e-Learn Design Ltd | Scotland's Moodle Partner T +44 (0)845 474 4512 | M +44 (0)7808 068 797 | www.e-learndesign.co.uk