InnoDB: using atomic writes.

2020-04-16 15:56:41 0 [Note] InnoDB: Mutexes and rw_locks use Windows interlocked functions

2020-04-16 15:56:41 0 [Note] InnoDB: Uses event mutexes

2020-04-16 15:56:41 0 [Note] InnoDB: Compressed tables use zlib 1.2.11

2020-04-16 15:56:41 0 [Note] InnoDB: Number of pools: 1

2020-04-16 15:56:41 0 [Note] InnoDB: Using SSE2 crc32 instructions

2020-04-16 15:56:41 0 [Note] InnoDB: Initializing buffer pool, total size = 2147483648, chunk size = 134217728

2020-04-16 15:56:41 0 [Note] InnoDB: Completed initialization of buffer pool

2020-04-16 15:56:41 0 [Note] InnoDB: 128 rollback segments are active.

2020-04-16 15:56:41 0 [Note] InnoDB: Creating shared tablespace for temporary tables

2020-04-16 15:56:41 0 [Note] InnoDB: Setting file '.\ibtmp1' size to 12 MB. Physically writing the file full; Please wait ...

2020-04-16 15:56:41 0 [Note] InnoDB: File '.\ibtmp1' size is now 12 MB.

2020-04-16 15:56:41 0 [Note] InnoDB: 10.5.2 started; log sequence number 67923; transaction id 98

2020-04-16 15:56:41 0 [Note] Plugin 'FEEDBACK' is disabled.

2020-04-16 15:56:41 0 [Note] InnoDB: Loading buffer pool(s) from E:\MariaDB\data\ib_buffer_pool

2020-04-16 15:56:42 0 [Note] Server socket created on IP: '::'.

2020-04-16 15:56:42 0 [Note] InnoDB: Buffer pool(s) load completed at 200416 15:56:42

2020-04-16 15:56:42 0 [Note] Reading of all Master_info entries succeeded

2020-04-16 15:56:42 0 [Note] Added new Master_info '' to hash table

2020-04-16 15:56:42 0 [Note] E:\MariaDB\bin\mysqld.exe: ready for connections.

Version: '10.5.2-MariaDB'  socket: ''  port: 3306  mariadb.org binary distribution

2020-04-16 15:57:38 3 [Warning] Aborted connection 3 to db: 'Tours' user: 'root' host: 'localhost' (Got an error reading communication packets)

2020-04-16 15:59:36 4 [Warning] Aborted connection 4 to db: 'Tours' user: 'root' host: 'localhost' (Got an error reading communication packets)

200416 16:04:24 [ERROR] mysqld got exception 0xc0000005 ;

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: 10.5.2-MariaDB

key_buffer_size=134217728

read_buffer_size=131072

max_used_connections=2

max_threads=65537

thread_count=3

It is possible that mysqld could use up to 

key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 136421 K  bytes of memory

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

Thread pointer: 0x20770a0dce8

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...

mysqld.exe!Binary_string::copy_printable_hhhh()[sql_string.cc:788]

mysqld.exe!Protocol::store_warning()[protocol.cc:1199]

mysqld.exe!mysqld_show_warnings()[sql_error.cc:827]

mysqld.exe!mysql_execute_command()[sql_parse.cc:3971]

mysqld.exe!mysql_parse()[sql_parse.cc:7957]

mysqld.exe!dispatch_command()[sql_parse.cc:1842]

mysqld.exe!do_command()[sql_parse.cc:1358]

mysqld.exe!threadpool_process_request()[threadpool_common.cc:357]

mysqld.exe!tp_callback()[threadpool_common.cc:196]

ntdll.dll!TpReleaseWait()

ntdll.dll!RtlInitializeResource()

KERNEL32.DLL!BaseThreadInitThunk()

ntdll.dll!RtlUserThreadStart()

Trying to get some variables.

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

Query (0x2079df500b0): SHOW WARNINGS

Connection ID (thread ID): 7

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

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.

Writing a core file at E:\MariaDB\data\