MariaDB [(none)]> select @@version,@@core_file;

+------------------------------+-------------+

| @@version                    | @@core_file |

+------------------------------+-------------+

| 10.6.14-9-MariaDB-enterprise |           1 |

+------------------------------+-------------+

[root@ip-172-31-32-162]# cat /etc/redhat-release 

Red Hat Enterprise Linux release 8.7 (Ootpa)

[root@ip-172-31-32-162]# sysctl kernel.core_pattern

kernel.core_pattern = |/usr/lib/systemd/systemd-coredump %P %u %g %s %t %c %h %e

[root@ip-172-31-32-162 ~]# coredumpctl list

No coredumps found.

[root@ip-172-31-32-162 ~]# ls -lrth /var/lib/mysql/core*

[root@ip-172-31-32-162 ~]# kill -6 `pidof mariadbd`

[root@ip-172-31-32-162 mysql]# ls -lrth /var/lib/mysql/

total 121M

drwx------. 2 mysql mysql 4.0K Oct 13 03:27 mysql

drwx------. 2 mysql mysql   20 Oct 13 03:27 performance_schema

drwx------. 2 mysql mysql 8.0K Oct 13 03:27 sys

-rw-r--r--. 1 mysql mysql   17 Oct 13 03:27 mysql_upgrade_info

-rw-rw----. 1 mysql mysql    0 Oct 13 03:45 multi-master.info

-rw-rw----. 1 mysql mysql  910 Oct 13 08:09 ib_buffer_pool

-rw-rw----. 1 mysql mysql  12M Oct 13 08:09 ibdata1

-rw-rw----. 1 mysql mysql   52 Oct 13 08:09 aria_log_control

-rw-rw----. 1 mysql mysql 408K Oct 13 08:09 aria_log.00000001

-rw-rw----. 1 mysql mysql  12M Oct 13 08:17 ibtmp1

-rw-rw----. 1 mysql mysql    9 Oct 13 08:17 ddl_recovery.log

-rw-rw----. 1 mysql mysql    9 Oct 13 08:17 ddl_recovery-backup.log

srwxrwxrwx. 1 mysql mysql    0 Oct 13 08:17 mysql.sock

-rw-rw----. 1 mysql mysql    5 Oct 13 08:17 ip-172-31-32-162.pid

-rw-rw----. 1 mysql mysql  22K Oct 13 08:17 error.log

-rw-rw----. 1 mysql mysql  96M Oct 13 08:17 ib_logfile0

[root@ip-172-31-32-162]# coredumpctl list

TIME                            PID   UID   GID SIG COREFILE  EXE

Fri 2023-10-13 08:17:53 UTC    1533   994   991   6 present   /usr/sbin/mariadbd

[root@ip-172-31-32-162]#  ls -lrth /var/lib/systemd/coredump/ 

total 2.4M

-rw-r-----. 1 root root 2.4M Oct 13 08:17 core.mariadbd.994.38608d77e33b4886a68706b8dfa975f5.1533.1697185069000000.lz4

Version: '10.6.14-9-MariaDB-enterprise'  socket: '/var/lib/mysql/mysql.sock'  port: 3306  MariaDB Enterprise Server

231013  8:17:49 [ERROR] mysqld got signal 6 ;

This could be because you hit a bug. It is also possible that this binary

or one of the libraries it was linked against is corrupt, improperly built,

or misconfigured. This error can also be caused by malfunctioning hardware.

To report this bug, see https://mariadb.com/kb/en/reporting-bugs

We will try our best to scrape up some info that will hopefully help

diagnose the problem, but since we have already crashed, 

something is definitely wrong and this may fail.

Server version: 10.6.14-9-MariaDB-enterprise source revision: 0c6b89c694a88aae764b152045bf5bdb234d7edf

key_buffer_size=134217728

read_buffer_size=131072

max_used_connections=0

max_threads=153

thread_count=0

It is possible that mysqld could use up to 

key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 467982 K  bytes of memory

Hope that's ok; if not, decrease some variables in the equation.

Thread pointer: 0x0

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

where mysqld died. If you see no messages after this, something went

terribly wrong...

stack_bottom = 0x0 thread_stack 0x49000

/usr/sbin/mariadbd(my_print_stacktrace+0x2e)[0x5588c425ce4e]

/usr/sbin/mariadbd(handle_fatal_signal+0x485)[0x5588c3d21bb5]

/lib64/libpthread.so.0(+0x12cf0)[0x7f1492c57cf0]

/lib64/libc.so.6(__poll+0x51)[0x7f14920890e1]

/usr/sbin/mariadbd(_Z26handle_connections_socketsv+0x1da)[0x5588c39fe60a]

/usr/sbin/mariadbd(_Z11mysqld_mainiPPc+0x1080)[0x5588c39ff930]

/lib64/libc.so.6(__libc_start_main+0xe5)[0x7f1491f9ed85]

/usr/sbin/mariadbd(_start+0x2e)[0x5588c39f3eae]

The manual page at https://mariadb.com/kb/en/how-to-produce-a-full-stack-trace-for-mysqld/ contains

information that should help you find out what is causing the crash.

Writing a core file...

Working directory at /var/lib/mysql

Resource Limits:

Limit                     Soft Limit           Hard Limit           Units     

Max cpu time              unlimited            unlimited            seconds   

Max file size             unlimited            unlimited            bytes     

Max data size             unlimited            unlimited            bytes     

Max stack size            8388608              unlimited            bytes     

Max core file size        unlimited            unlimited            bytes     

Max resident set          unlimited            unlimited            bytes     

Max processes             2928                 2928                 processes 

Max open files            32768                32768                files     

Max locked memory         65536                65536                bytes     

Max address space         unlimited            unlimited            bytes     

Max file locks            unlimited            unlimited            locks     

Max pending signals       2928                 2928                 signals   

Max msgqueue size         819200               819200               bytes     

Max nice priority         0                    0                    

Max realtime priority     0                    0                    

Max realtime timeout      unlimited            unlimited            us        

Core pattern: |/usr/lib/systemd/systemd-coredump %P %u %g %s %t %c %h %e

Kernel version: Linux version 4.18.0-425.13.1.el8_7.x86_64 (mockbuild@x86-vm-07.build.eng.bos.redhat.com) (gcc version 8.5.0 20210514 (Red Hat 8.5.0-16) (GCC)) #1 SMP Thu Feb 2 13:01:45 EST 2023