A crash on 10.11.6 reporting as the log directed.

240128 19:20:08 [ERROR] mysqld got exception 0xc0000005 ;

Sorry, we probably made a mistake, and this is a bug.

Your assistance in bug reporting will enable us to fix this for the next release.

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: 10.11.6-MariaDB-log source revision: fecd78b83785d5ae96f2c6ff340375be803cd299

key_buffer_size=16777216

read_buffer_size=67108864

max_used_connections=10

max_threads=48

thread_count=56

It is possible that mysqld could use up to 

key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 6308889 K  bytes of memory

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

Thread pointer: 0x2271884e578

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...

2024-01-28 19:20:08 197681 [Note] something private

2024-01-28 19:20:08 197681 [Note] something private

2024-01-28 19:20:08 197681 [Note] something private

2024-01-28 19:20:08 197681 [Note] something private

2024-01-28 19:20:08 197681 [Note] something private

server.dll!row_fts_psort_info_destroy()[row0ftsort.cc:336]

server.dll!row_fts_psort_info_init()[row0ftsort.cc:303]

server.dll!row_merge_build_indexes()[row0merge.cc:4766]

server.dll!ha_innobase::inplace_alter_table()[handler0alter.cc:8814]

server.dll!mysql_inplace_alter_table()[sql_table.cc:7796]

server.dll!mysql_alter_table()[sql_table.cc:10989]

server.dll!mysql_recreate_table()[sql_table.cc:12096]

server.dll!admin_recreate_table()[sql_admin.cc:71]

server.dll!mysql_admin_table()[sql_admin.cc:1232]

server.dll!Sql_cmd_optimize_table::execute()[sql_admin.cc:1620]

server.dll!mysql_execute_command()[sql_parse.cc:6039]

server.dll!Prepared_statement::execute()[sql_prepare.cc:5267]

server.dll!Prepared_statement::execute_loop()[sql_prepare.cc:4668]

server.dll!mysql_sql_stmt_execute()[sql_prepare.cc:3701]

server.dll!mysql_execute_command()[sql_parse.cc:3978]

server.dll!sp_instr_stmt::exec_core()[sp_head.cc:3923]

server.dll!sp_lex_keeper::reset_lex_and_exec_core()[sp_head.cc:3646]

server.dll!sp_instr_stmt::execute()[sp_head.cc:3827]

server.dll!sp_head::execute()[sp_head.cc:1463]

server.dll!sp_head::execute_procedure()[sp_head.cc:2479]

server.dll!Event_job_data::execute()[event_data_objects.cc:1482]

server.dll!event_worker_thread()[event_scheduler.cc:268]

server.dll!pfs_spawn_thread()[pfs.cc:2204]

server.dll!pthread_start()[my_winthread.c:62]

ucrtbase.dll!_recalloc()

KERNEL32.DLL!BaseThreadInitThunk()

ntdll.dll!RtlUserThreadStart()

Trying to get some variables.

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

Query (0x2270e6a4960): OPTIMIZE NO_WRITE_TO_BINLOG TABLE `xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx`

Connection ID (thread ID): 197689

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,not_null_range_scan=off,hash_join_cardinality=off,cset_narrowing=off

The manual page at https://mariadb.com/kb/en/how-to-produce-a-full-stack-trace-for-mariadbd/ contains

information that should help you find out what is causing the crash.

Writing a core file at C:\Program Files\MariaDB\data

Minidump written to C:\Program Files\MariaDB\data\mysqld.dmp