200928 16:33:43 [ERROR] mysqld got signal 11 ;

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: 10.3.23-MariaDB-0+deb10u1-log

key_buffer_size=268435456

read_buffer_size=1048576

max_used_connections=46

max_threads=502

thread_count=52

It is possible that mysqld could use up to

key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 1301524 K  bytes of memory

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

Thread pointer: 0x7f595c007aa8

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 = 0x7f5974988dd8 thread_stack 0x49000

*** buffer overflow detected ***: /usr/sbin/mysqld terminated

Fatal signal 6 while backtracing

2020-09-28 16:33:48 0 [Note] InnoDB: Using Linux native AIO

2020-09-28 16:33:48 0 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins

2020-09-28 16:33:48 0 [Note] InnoDB: Uses event mutexes

2020-09-28 16:33:48 0 [Note] InnoDB: Compressed tables use zlib 1.2.11

2020-09-28 16:33:48 0 [Note] InnoDB: Number of pools: 1

2020-09-28 16:33:48 0 [Note] InnoDB: Using generic crc32 instructions

2020-09-28 16:33:48 0 [Note] InnoDB: Initializing buffer pool, total size = 2G, instances = 8, chunk size = 128M

2020-09-28 16:33:48 0 [Note] InnoDB: Completed initialization of buffer pool

2020-09-28 16:33:48 0 [Note] InnoDB: If the mysqld execution user is authorized, page cleaner thread priority can be changed. See the man page of setpriority().

2020-09-28 16:33:48 0 [Note] InnoDB: Starting crash recovery from checkpoint LSN=269557888141781

2020-09-28 16:33:48 0 [Note] InnoDB: Starting final batch to recover 8 pages from redo log.

2020-09-28 16:33:48 0 [Note] InnoDB: 128 out of 128 rollback segments are active.

2020-09-28 16:33:48 0 [Note] InnoDB: Removed temporary tablespace data file: "ibtmp1"

2020-09-28 16:33:48 0 [Note] InnoDB: Creating shared tablespace for temporary tables

2020-09-28 16:33:48 0 [Note] InnoDB: Setting file './ibtmp1' size to 12 MB. Physically writing the file full; Please wait ...

2020-09-28 16:33:48 0 [Note] InnoDB: File './ibtmp1' size is now 12 MB.

2020-09-28 16:33:48 0 [Note] InnoDB: Waiting for purge to start

2020-09-28 16:33:48 0 [Note] InnoDB: 10.3.23 started; log sequence number 269557888147361; transaction id 3317646164

2020-09-28 16:33:48 0 [Note] Plugin 'FEEDBACK' is disabled.

2020-09-28 16:33:48 0 [Note] Recovering after a crash using tc.log

2020-09-28 16:33:48 0 [Note] Starting crash recovery...

2020-09-28 16:33:48 0 [Note] Crash recovery finished.

2020-09-28 16:33:48 0 [Note] InnoDB: Loading buffer pool(s) from /var/lib/mysql/ib_buffer_pool

2020-09-28 16:33:48 0 [Note] Server socket created on IP: '::'.

2020-09-28 16:33:48 0 [Note] Reading of all Master_info entries succeeded

2020-09-28 16:33:48 0 [Note] Added new Master_info '' to hash table

2020-09-28 16:33:48 0 [Note] /usr/sbin/mysqld: ready for connections.

Version: '10.3.23-MariaDB-0+deb10u1-log'  socket: '/run/mysqld/mysqld.sock'  port: 3306  Debian 10

2020-09-28 16:33:48 0 [Note] InnoDB: Buffer pool(s) load completed at 200928 16:33:48