2019-08-05 14:42:54 0 [Note] /usr/bin/mysqld: ready for connections. Version: '10.4.7-MariaDB-log' socket: '/run/mysql/socket' port: 16603 Source distribution 2019-08-05 15:18:04 10 [Warning] Aborted connection 10 to db: 'unconnected' user: 'unauthenticated' host: 'mythtv' (This connection closed normally without authentication) 2019-08-05 15:18:25 21 [Warning] Aborted connection 21 to db: 'unconnected' user: 'unauthenticated' host: 'springdale.moonlit-rail.com' (This connection closed normally without authentication) 2019-08-05 15:18:26 22 [Warning] Aborted connection 22 to db: 'unconnected' user: 'unauthenticated' host: 'springdale.moonlit-rail.com' (This connection closed normally without authentication) 190805 15:18:46 [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: 10.4.7-MariaDB-log key_buffer_size=536870912 read_buffer_size=33554432 max_used_connections=31 max_threads=153 thread_count=37 It is possible that mysqld could use up to key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 85757593 K bytes of memory Hope that's ok; if not, decrease some variables in the equation. Thread pointer: 0x7f9a5c000c08 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 = 0x7f9b04769e88 thread_stack 0x49000 /usr/bin/mysqld(my_print_stacktrace+0x29)[0x5616326599a9] /usr/bin/mysqld(handle_fatal_signal+0x53d)[0x56163210d2cd] /lib64/libpthread.so.0(+0x12a80)[0x7f9b0871aa80] /usr/bin/mysqld(_Z7sortcmpPK6StringS1_PK15charset_info_st+0xa)[0x561631f828fa] /usr/bin/mysqld(_ZNK26Type_handler_string_result13Item_const_eqEPK10Item_constS2_b+0xe7)[0x561632045c77] /usr/bin/mysqld(_ZN4Item15eq_by_collationEPS_bPK15charset_info_st+0x7a)[0x56163213167a] /usr/bin/mysqld(_ZN9Item_cond14add_key_fieldsEP4JOINPP9KEY_FIELDPjyPP14SARGABLE_PARAM+0x26e)[0x561631f294fe] /usr/bin/mysqld(_ZN13Item_cond_and14add_key_fieldsEP4JOINPP9KEY_FIELDPjyPP14SARGABLE_PARAM+0x4a)[0x561631f2924a] /usr/bin/mysqld(+0x6d45ac)[0x561631f2a5ac] /usr/bin/mysqld(_ZN4JOIN14optimize_innerEv+0x1a1d)[0x561631f5988d] /usr/bin/mysqld(_ZN4JOIN8optimizeEv+0x93)[0x561631f5b5d3] /usr/bin/mysqld(_Z12mysql_selectP3THDP10TABLE_LISTjR4ListI4ItemEPS4_jP8st_orderS9_S7_S9_yP13select_resultP18st_select_lex_unitP13st_select_lex+0xe0)[0x561631f5c480] /usr/bin/mysqld(_Z13handle_selectP3THDP3LEXP13select_resultm+0x18d)[0x561631f5cffd] /usr/bin/mysqld(+0x697f5d)[0x561631eedf5d] /usr/bin/mysqld(_Z21mysql_execute_commandP3THD+0x746d)[0x561631efd35d] /usr/bin/mysqld(_ZN18Prepared_statement7executeEP6Stringb+0x437)[0x561631f14747] /usr/bin/mysqld(_ZN18Prepared_statement12execute_loopEP6StringbPhS2_+0x96)[0x561631f14906] /usr/bin/mysqld(+0x6bf74d)[0x561631f1574d] /usr/bin/mysqld(_Z19mysqld_stmt_executeP3THDPcj+0x27)[0x561631f15837] /usr/bin/mysqld(_Z16dispatch_command19enum_server_commandP3THDPcjbb+0xc8a)[0x561631f0137a] /usr/bin/mysqld(_Z10do_commandP3THD+0x15f)[0x561631f041df] /usr/bin/mysqld(_Z24do_handle_one_connectionP7CONNECT+0x28f)[0x561631feadcf] /usr/bin/mysqld(handle_one_connection+0x41)[0x561631feaf11] /lib64/libpthread.so.0(+0x819c)[0x7f9b0871019c] /lib64/libc.so.6(clone+0x3f)[0x7f9b076c24af] Trying to get some variables. Some pointers may be invalid and cause the dump to abort. Query (0x7f9a5c00ffa0): is an invalid pointer Connection ID (thread ID): 14 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=on,table_elimination=on,extended_keys=on,exists_to_in=on,orderby_uses_equalities=on,condition_pushdown_for_derived=on,split_materialized=on,condition_pushdown_for_subquery=on,rowid_filter=on,condition_pushdown_from_having=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. We think the query pointer is invalid, but we will try to print it anyway. Query: SELECT recordid, category, (category = NULL) AS catmatch, (category = '') AS typematch FROM record WHERE type = 11 AND (category = NULL OR category = '' OR category = 'Default') ORDER BY catmatch DESC, typematch DESC Writing a core file... Working directory at /var/mysql Resource Limits: Limit Soft Limit Hard Limit Units Max cpu time unlimited unlimited seconds Max file size unlimited unlimited bytes Max data size unlimited unlimited bytes Max stack size 8388608 unlimited bytes Max core file size 0 unlimited bytes Max resident set unlimited unlimited bytes Max processes 30631 30631 processes Max open files 1024 4096 files Max locked memory 65536 65536 bytes Max address space unlimited unlimited bytes Max file locks unlimited unlimited locks Max pending signals 30631 30631 signals Max msgqueue size 819200 819200 bytes Max nice priority 0 0 Max realtime priority 0 0 Max realtime timeout unlimited unlimited us Core pattern: core