Version: '10.1.14-MariaDB' socket: '/var/run/mariadb/mysqld.sock' port: 3306 MariaDB Server 2016-07-12 15:13:56 140478915155712 [Warning] IP address '10.238.79.6' could not be resolved: Name or service not known 160712 15:18:01 [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 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: 10.1.14-MariaDB key_buffer_size=8388608 read_buffer_size=1048576 max_used_connections=3 max_threads=1202 thread_count=2 It is possible that mysqld could use up to key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 2494489 K bytes of memory Hope that's ok; if not, decrease some variables in the equation. Thread pointer: 0x0x7fc29b7db008 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 = 0x7fc3cbda1d30 thread_stack 0x40000 /usr/sbin/mysqld(my_print_stacktrace+0x2e)[0x55f7345b91be] /usr/sbin/mysqld(handle_fatal_signal+0x38d)[0x55f7340e4f0d] /lib64/libpthread.so.0(+0xf100)[0x7fc3cba83100] /usr/sbin/mysqld(_ZN9in_string13value_to_itemEjP4Item+0x62)[0x55f734121fe2] /usr/sbin/mysqld(_ZN12Item_func_in16get_func_mm_treeEP15RANGE_OPT_PARAMP5FieldP4Item+0x12d)[0x55f7341e39ad] /usr/sbin/mysqld(_ZN14Item_bool_func21get_full_func_mm_treeEP15RANGE_OPT_PARAMP10Item_fieldP4Item+0x1d0)[0x55f7341daa80] mysys/stacktrace.c:247(my_print_stacktrace)[0x55f7341dfb21] sql/item.h:115(DTCollation::set_repertoire_from_charset(charset_info_st const*))[0x55f733ea9db0] sql/opt_range.cc:7112(Item_func_in::get_func_mm_tree(RANGE_OPT_PARAM*, Field*, Item*))[0x55f733fb6d88] sql/sql_select.cc:3488(get_quick_record_count)[0x55f733fb955b] sql/sql_select.cc:3437(mysql_select(THD*, Item***, TABLE_LIST*, unsigned int, List&, Item*, unsigned int, st_order*, st_order*, Item*, st_order*, unsigned long long, select_result*, st_select_lex_unit*, st_select_lex*))[0x55f733fb96af] sql/sql_select.cc:384(handle_select(THD*, LEX*, select_result*, unsigned long))[0x55f733fba205] sql/sql_parse.cc:5895(execute_sqlcom_select)[0x55f733f5cc91] sql/sql_parse.cc:2960(mysql_execute_command(THD*))[0x55f733f6889f] sql/sql_parse.cc:7315(mysql_parse(THD*, char*, unsigned int, Parser_state*))[0x55f733f6c17e] sql/sql_parse.cc:1486(dispatch_command(enum_server_command, THD*, char*, unsigned int))[0x55f733f6f63b] sql/sql_parse.cc:1109(do_command(THD*))[0x55f733f6feb9] sql/sql_connect.cc:1350(do_handle_one_connection(THD*))[0x55f73403362a] sql/sql_connect.cc:1264(handle_one_connection)[0x55f734033800] /lib64/libpthread.so.0(+0x7dc5)[0x7fc3cba7bdc5] /lib64/libc.so.6(clone+0x6d)[0x7fc3c9e9fc4d] Trying to get some variables. Some pointers may be invalid and cause the dump to abort. Query (0x7fc29cc24020): select count(*) from field_data_field_computed_family_id where field_computed_family_id_value NOT IN ( NULL, '1017561') Connection ID (thread ID): 3 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.