Server version: 10.3.17-MariaDB-log
key_buffer_size=134217728
read_buffer_size=1048576
max_used_connections=4
max_threads=501
thread_count=23
It is possible that mysqld could use up to
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 1168400 K  bytes of memory
Hope that's ok; if not, decrease some variables in the equation.

Thread pointer: 0x7efe9c000a88
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 = 0x7effa0195c30 thread_stack 0x49000
/usr/sbin/mysqld(my_print_stacktrace+0x2e)[0x56131929393e]
/usr/sbin/mysqld(handle_fatal_signal+0x30f)[0x561318d332af]
sigaction.c:0(__restore_rt)[0x7f00008f55d0]
/usr/lib64/mysql/plugin/ha_connect.so(_ZN7TDBODBC6OpenDBEP7_global+0x359)[0x7effcfd86559]
/usr/lib64/mysql/plugin/ha_connect.so(_ZN10ha_connect8rnd_initEb+0x1be)[0x7effcfce94de]
/usr/lib64/mysql/plugin/ha_connect.so(_ZN10ha_connect10index_initEjb+0x12b)[0x7effcfce796b]
/usr/sbin/mysqld(_ZN18QUICK_RANGE_SELECT5resetEv+0x21d)[0x561318e4224d]
/usr/sbin/mysqld(_Z12mysql_deleteP3THDP10TABLE_LISTP4ItemP10SQL_I_ListI8st_orderEyyP13select_result+0xcf7)[0x561318e73277]
/usr/sbin/mysqld(_Z21mysql_execute_commandP3THD+0x25d1)[0x561318b57611]
/usr/sbin/mysqld(_Z11mysql_parseP3THDPcjP12Parser_statebb+0x22b)[0x561318b5dc2b]
/usr/sbin/mysqld(_Z16dispatch_command19enum_server_commandP3THDPcjbb+0x1c9f)[0x561318b6080f]
/usr/sbin/mysqld(_Z10do_commandP3THD+0x13e)[0x561318b6174e]
/usr/sbin/mysqld(_Z11tp_callbackP13TP_connection+0x1c0)[0x561318c6f5b0]
/usr/sbin/mysqld(+0x75e3c0)[0x561318d083c0]
/usr/sbin/mysqld(+0xc9c85d)[0x56131924685d]
pthread_create.c:0(start_thread)[0x7f00008eddd5]
/lib64/libc.so.6(clone+0x6d)[0x7efffec8fead]