You have set the component to 'Plugin - SQL_ERROR_LOG'. Does it mean you have identified the query, specific configuration or use case which causes the failure?

yes i was plugin that component.
after that error i also got the same error message with query.
This one..
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
191104 23:48:03 [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: 10.3.8-MariaDB-log
key_buffer_size=16777216
read_buffer_size=2097152
max_used_connections=2
max_threads=1002
thread_count=9
It is possible that mysqld could use up to
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 4142942 K bytes of memory
Hope that's ok; if not, decrease some variables in the equation.
Thread pointer: 0x2b209a650008
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 = 0x2b1d4fe96de8 thread_stack 0x40000
/rdsdbbin/mysql/bin/mysqld(my_print_stacktrace+0x29)[0x55c03845f5f9]
mysys/stacktrace.c:270(my_print_stacktrace)[0x55c037ef25ed]
sigaction.c:0(__restore_rt)[0x2b1d50c15100]
/rdsdbbin/mysql/bin/mysqld(+0xde5d99)[0x55c03849ad99]
strings/ctype-utf8.c:5302(my_strcasecmp_utf8)[0x55c037d20636]
sql/sql_parse.cc:7297(check_table_access(THD*, unsigned long, TABLE_LIST*, bool, unsigned int, bool))[0x55c037d2690f]
sql/sql_parse.cc:3780(mysql_execute_command(THD*))[0x55c037d2e6cc]
sql/sql_parse.cc:8236(mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool))[0x55c037d30fad]
sql/sql_parse.cc:1851(dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool))[0x55c037d31b6f]
sql/sql_parse.cc:1399(do_command(THD*))[0x55c037dfaeec]
sql/sql_connect.cc:1445(do_handle_one_connection(CONNECT*))[0x55c037dfb0c4]
sql/sql_connect.cc:1353(handle_one_connection)[0x55c0384116fa]
pthread_create.c:0(start_thread)[0x2b1d50c0ddc5]
/lib64/libc.so.6(clone+0x6d)[0x2b1d51430c9d]
Trying to get some variables.
Some pointers may be invalid and cause the dump to abort.
Query (0x2b209a6a06e0): WITH W_DATA AS ( SELECT 1 AS ORD_NUM , 'CNYS' AS CNYS_BRHS_TYPE , LPAD(REPLACE(A01.DONG_NAME, ' ', ''), 4, 0) AS DONG_ORD , A01.HO_NAME AS HO_ORD , A01.DONG_NAME /* / , A01.HO_NAME / / , A01.MVN_DATE / / , A01.LVHS_DATE / / , CONCAT(SUBSTR(IF(A01.MVN_USER_NAME, NULL, A02.USER_NAME), 1, 1), REGEXP_REPLACE(SUBSTR(IF(A01.MVN_USER_NAME, NULL, A02.USER_NAME), 2),'[ - a-z]','')) AS USER_NAME /* ( * ) / FROM RNDP.TB_SUP_CNYS_INFO A01 LEFT OUTER JOIN RNDP.TB_SYS_USER A02 / / ON A02.USER_NO = A01.MVN_USER_NO WHERE A01.MVN_USER_NAME != ' ' UNION ALL SELECT 2 AS ORD_NUM , 'BRHS' AS CNYS_BRHS_TYPE , DONG_NAME AS DONG_ORD , CASE / A, B A,B 11 ( ) / WHEN LEFT(A01.HO_NAME, 1) IN ('A', 'B') THEN LPAD(SUBSTRING(A01.HO_NAME, 2), 11, 0) ELSE LPAD(A01.HO_NAME, 11, 0) END HO_ORD / / , A01.DONG_NAME / / , A01.HO_NAME / / , A02.MVN_DATE / / , A02.LVHS_DATE / / , CONCAT(SUBSTR(IF(A03.USER_NAME, NULL, A02.MVN_NAME), 1, 1), REGEXP_REPLACE(SUBSTR(IF(A03.USER_NAME, NULL, A02.MVN_NAME), 2),'[ - a-z]','')) AS USER_NAME /* ( * ) / FROM RNDP.TB_SUP_BRHS_INFO A01 / / INNER JOIN RNDP.TB_SUP_BRHS_MVN_INFO A02 / / ON A01.MVN_SN = A02.MVN_SN LEFT OUTER JOIN RNDP.TB_SYS_USER A03 / / ON A03.USER_NO = A02.MVN_MAN_USER_NO ) SELECT A01.CNYS_BRHS_TYPE , A01.DONG_NAME / / , A01.HO_NAME / / , DATE_FORMAT(A01.MVN_DATE, '%Y.%m.%d') AS MVN_DATE / / , DATE_FORMAT(A01.LVHS_DATE, '%Y.%m.%d') AS LVHS_DATE / / , A01.USER_NAME / ( * ) */ FROM W_DATA A01 WHERE 1 = 1 LIMIT 0, 200
Connection ID (thread ID): 10
Status: NOT_KILLED
Optimizer switch: index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,engine_condition_pushdown=off,index_condition_pushdown=on,derived_merge=on,derived_with_keys=on,firstmatch=on,loosescan=on,materialization=on,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=on,semijoin_with_cache=on,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off,table_elimination=on,extended_keys=on,exists_to_in=on,orderby_uses_equalities=on,condition_pushdown_for_derived=on,split_materialized=on
The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains
information that should help you find out what is causing the crash.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

and also this error message also show..

2019-11-05 0:39:25 127 [ERROR] mysqld: Can't find record in 'slow_log'
2019-11-05 0:39:25 127 [ERROR] Failed to write to mysql.slow_log: Can't find record in 'slow_log'

Hi, This is Jang.
i found how to replay this situation.
When i connect mariadb by client (Workbench, HeidiSQL...)
And.. if my session db value is NULL by 'show processlist' query.
at that time, when i execute WITH query, database restarted.
but, if i set my database by "use 'db_nameb'" query.
WITH query work well..
i hope this action help for you.
Thanks.

There have been bugs fixed since 10.3.8 which were related to executing CTE without having the current database (just as you described). Although those failures didn't look exactly like your crash, they could still have the same root cause. It would be very helpful if you could try a recent 10.3 version and see if it still fails.