210525 15:55:26 [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: 10.3.28-MariaDB-log key_buffer_size=3221225472 read_buffer_size=131072 max_used_connections=5 max_threads=153 thread_count=10 It is possible that mysqld could use up to key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 3482080 K bytes of memory Hope that's ok; if not, decrease some variables in the equation. Thread pointer: 0x7fd6e40009d8 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 = 0x7fdbb833fd00 thread_stack 0x49000 /usr/sbin/mysqld(my_print_stacktrace+0x2e)[0x55c0910c6d7e] /usr/sbin/mysqld(handle_fatal_signal+0x30f)[0x55c090b65c1f] sigaction.c:0(__restore_rt)[0x7fdbc7714630] /usr/sbin/mysqld(_ZN14Arg_comparator16compare_datetimeEv+0x55)[0x55c090b96695] /usr/sbin/mysqld(_ZN12Item_func_lt7val_intEv+0x2f)[0x55c090b9a25f] /usr/sbin/mysqld(_ZNK23Type_handler_int_result13Item_val_boolEP4Item+0x10)[0x55c090aaf110] /usr/sbin/mysqld(_ZN13Item_cond_and7val_intEv+0x3a)[0x55c090b97f6a] /usr/sbin/mysqld(_ZN4Item17save_int_in_fieldEP5Fieldb+0x1f)[0x55c090b88d3f] /usr/sbin/mysqld(_ZN4Item13save_in_fieldEP5Fieldb+0x36)[0x55c090b7a336] /usr/sbin/mysqld(_ZN5TABLE21update_virtual_fieldsEP7handler21enum_vcol_update_mode+0x127)[0x55c090a3c027] /usr/sbin/mysqld(_ZN7handler11ha_rnd_nextEPh+0x194)[0x55c090b6ad84] /usr/sbin/mysqld(_Z13rr_sequentialP11READ_RECORD+0x1c)[0x55c090c908ac] /usr/sbin/mysqld(_Z10sub_selectP4JOINP13st_join_tableb+0x169)[0x55c0909b9399] /usr/sbin/mysqld(_ZN4JOIN10exec_innerEv+0xa8b)[0x55c0909dc16b] /usr/sbin/mysqld(_ZN4JOIN4execEv+0x33)[0x55c0909dc383] /usr/sbin/mysqld(_Z12mysql_selectP3THDP10TABLE_LISTjR4ListI4ItemEPS4_jP8st_orderS9_S7_S9_yP13select_resultP18st_select_lex_unitP13st_select_lex+0x11a)[0x55c0909dc4da] /usr/sbin/mysqld(_Z13handle_selectP3THDP3LEXP13select_resultm+0x1dc)[0x55c0909dcffc] /usr/sbin/mysqld(+0x4db589)[0x55c09088c589] /usr/sbin/mysqld(_Z21mysql_execute_commandP3THD+0x2a80)[0x55c090982ed0] /usr/sbin/mysqld(_Z11mysql_parseP3THDPcjP12Parser_statebb+0x1fb)[0x55c09098928b] /usr/sbin/mysqld(_Z16dispatch_command19enum_server_commandP3THDPcjbb+0xfd4)[0x55c09098ab64] /usr/sbin/mysqld(_Z10do_commandP3THD+0x11b)[0x55c09098c73b] /usr/sbin/mysqld(_Z24do_handle_one_connectionP7CONNECT+0x1d6)[0x55c090a63ad6] /usr/sbin/mysqld(handle_one_connection+0x3d)[0x55c090a63bed] /usr/sbin/mysqld(+0xcc8b0d)[0x55c091079b0d] pthread_create.c:0(start_thread)[0x7fdbc770cea5] /lib64/libc.so.6(clone+0x6d)[0x7fdbc5aac9fd] Trying to get some variables. Some pointers may be invalid and cause the dump to abort. Query (0x7fd6e400f410): SELECT * FROM `products_gas` LIMIT 0, 25 Connection ID (thread ID): 131 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 https://mariadb.com/kb/en/how-to-produce-a-full-stack-trace-for-mysqld/ contains information that should help you find out what is causing the crash. Writing a core file... Working directory at /var/lib/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 127851 127851 processes Max open files 40000 40000 files Max locked memory 65536 65536 bytes Max address space unlimited unlimited bytes Max file locks unlimited unlimited locks Max pending signals 127851 127851 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 2021-05-25 15:55:35 0 [Note] InnoDB: Using Linux native AIO 2021-05-25 15:55:35 0 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins 2021-05-25 15:55:35 0 [Note] InnoDB: Uses event mutexes 2021-05-25 15:55:35 0 [Note] InnoDB: Compressed tables use zlib 1.2.7 2021-05-25 15:55:35 0 [Note] InnoDB: Number of pools: 1 2021-05-25 15:55:35 0 [Note] InnoDB: Using SSE2 crc32 instructions 2021-05-25 15:55:35 0 [Note] InnoDB: Initializing buffer pool, total size = 14G, instances = 14, chunk size = 128M 2021-05-25 15:55:36 0 [Note] InnoDB: Completed initialization of buffer pool 2021-05-25 15:55:36 0 [Note] InnoDB: If the mysqld execution user is authorized, page cleaner thread priority can be changed. See the man page of setpriority(). 2021-05-25 15:55:36 0 [Note] InnoDB: Starting crash recovery from checkpoint LSN=490640262605 2021-05-25 15:55:36 0 [Note] InnoDB: Starting final batch to recover 900 pages from redo log. 2021-05-25 15:55:37 0 [Note] InnoDB: 128 out of 128 rollback segments are active. 2021-05-25 15:55:37 0 [Note] InnoDB: Removed temporary tablespace data file: "ibtmp1" 2021-05-25 15:55:37 0 [Note] InnoDB: Creating shared tablespace for temporary tables 2021-05-25 15:55:37 0 [Note] InnoDB: Setting file './ibtmp1' size to 12 MB. Physically writing the file full; Please wait ... 2021-05-25 15:55:37 0 [Note] InnoDB: File './ibtmp1' size is now 12 MB. 2021-05-25 15:55:37 0 [Note] InnoDB: 10.3.28 started; log sequence number 490640269007; transaction id 1306657507 2021-05-25 15:55:37 0 [Note] InnoDB: Loading buffer pool(s) from /var/lib/mysql/ib_buffer_pool 2021-05-25 15:55:37 0 [Note] Plugin 'FEEDBACK' is disabled. 2021-05-25 15:55:37 0 [Note] Recovering after a crash using tc.log 2021-05-25 15:55:37 0 [Note] Starting crash recovery... 2021-05-25 15:55:37 0 [Note] Crash recovery finished. 2021-05-25 15:55:37 0 [Note] Server socket created on IP: '::'.