SELECT PCU.THREAD_ID, TH.processlist_id , PCU.EVENT_ID, PCU.SQL_TEXT , PCU.ROWS_AFFECTED FROM performance_schema.threads TH, performance_schema.events_statements_history PCU WHERE TH.THREAD_ID=PCU.THREAD_ID AND TH.processlist_id IN (SELECT DISTINCT(THREAD_ID) FROM INFORMATION_SCHEMA.metadata_lock_info)

170417  7:30:01 [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 http://kb.askmonty.org/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: 10.0.19-MariaDB-log

key_buffer_size=134217728

read_buffer_size=1048576

max_used_connections=2459

max_threads=4002

thread_count=253

It is possible that mysqld could use up to 

key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 8406281 K  bytes of memory

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

Thread pointer: 0x0x7f950f4ba008

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 = 0x7f9533e91de0 thread_stack 0x48000

mysys/stacktrace.c:247(my_print_stacktrace)[0xbca37e]

sql/signal_handler.cc:153(handle_fatal_signal)[0x71fe5c]

/lib64/libpthread.so.0[0x32cec0f710]

/MARIA/mariadb/lib/plugin/metadata_lock_info.so(_Z31i_s_metadata_lock_info_fill_rowP10MDL_ticketPv+0x126)[0x7f98f2d72e96]

sql/mdl.cc:713(mdl_iterate_lock)[0x677c5d]

/MARIA/mariadb/lib/plugin/metadata_lock_info.so(_Z33i_s_metadata_lock_info_fill_tableP3THDP10TABLE_LISTP4Item+0x27)[0x7f98f2d72d67]

sql/sql_show.cc:8159(get_schema_tables_result(JOIN*, enum_schema_table_state))[0x5f5121]

sql/sql_select.cc:2532(JOIN::exec_inner())[0x5ef045]

sql/sql_select.cc:2370(JOIN::exec())[0x5edd2a]

sql/sql_select.cc:373(handle_select(THD*, LEX*, select_result*, unsigned long))[0x5f195d]

sql/sql_parse.cc:5275(execute_sqlcom_select)[0x5957d0]

sql/sql_parse.cc:2562(mysql_execute_command(THD*))[0x598427]

sql/sql_parse.cc:6529(mysql_parse(THD*, char*, unsigned int, Parser_state*))[0x59f866]

sql/sql_parse.cc:1310(dispatch_command(enum_server_command, THD*, char*, unsigned int))[0x5a1797]

sql/sql_parse.cc:999(do_command(THD*))[0x5a1ed9]

sql/sql_connect.cc:1375(do_handle_one_connection(THD*))[0x66bfd4]

sql/sql_connect.cc:1291(handle_one_connection)[0x66c112]

perfschema/pfs.cc:1863(pfs_spawn_thread)[0xa83f49]

/lib64/libpthread.so.0[0x32cec079d1]

/lib64/libc.so.6(clone+0x6d)[0x32ce8e8b6d]

Trying to get some variables.

Some pointers may be invalid and cause the dump to abort.

Query (0x7f9398bec020): SELECT PCU.THREAD_ID, TH.processlist_id , PCU.EVENT_ID, PCU.SQL_TEXT , PCU.ROWS_AFFECTED FROM performance_schema.threads TH, performance_schema.events_statements_history PCU WHERE TH.THREAD_ID=PCU.THREAD_ID AND TH.processlist_id IN (SELECT DISTINCT(THREAD_ID) FROM INFORMATION_SCHEMA.metadata_lock_info)

Connection ID (thread ID): 6259347

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

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.

170417 07:30:03 mysqld_safe Number of processes running now: 0

170417 07:30:03 mysqld_safe mysqld restarted