MariaDB 10.3.15 Crash "[ERROR] mysqld got signal 11 ;"

MariaDB crash many times with 190926 15:59:48 [ERROR] mysqld got signal 11 ;
Example:
MariaDB [(none)]> use information_schema;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed
MariaDB [information_schema]> show tables;
ERROR 2006 (HY000): MySQL server has gone away
No connection. Trying to reconnect...
Connection id: 13
Current database: information_schema

ERROR 2006 (HY000): MySQL server has gone away
No connection. Trying to reconnect...
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/usr/local/dba/tmp/.mysql.QOCP.sock' (111)
ERROR: Can't connect to the server

unknown [information_schema]>

MariaDB crashed, process mysqld was restarted.