Failed to execute ALTER EVENT

create database ALTER_EVENT_145;

show databases like 'ALTER_EVENT_145';

use ALTER_EVENT_145;

create table ALTER_EVENT_145(time TIMESTAMP);

show tables like 'ALTER_EVENT_145';

create event ALTER_EVENT_145 on schedule every 5 second do insert into ALTER_EVENT_145 values(now());

select EVENT_SCHEMA,EVENT_NAME,EVENT_DEFINITION,INTERVAL_VALUE,INTERVAL_FIELD,STATUS,ON_COMPLETION,EVENT_COMMENT from information_schema.events where EVENT_NAME='ALTER_EVENT_145' and EVENT_SCHEMA='ALTER_EVENT_145';

set @@global.event_scheduler=ON;

show variables like 'event_scheduler';

Alter definer='root'@'localhost' event ALTER_EVENT_145 on schedule at current_timestamp + interval '2-10' year_month on completion not preserve rename to a disable on slave;

221214 23:20:02 [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: 10.5.16-221000-MariaDB-log

key_buffer_size=16777216

read_buffer_size=262144

max_used_connections=68

max_threads=2002

thread_count=56

It is possible that mysqld could use up to

key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 4676969 K  bytes of memory

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

Thread pointer: 0x7f30ec001198

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 = 0x7f3210499de8 thread_stack 0x49000

mysys/stacktrace.c:213(my_print_stacktrace)[0x55b350413c2e]

sql/signal_handler.cc:225(handle_fatal_signal)[0x55b34fe6ed25]

??:0(funlockfile)[0x7f32b03d85a0]

strings/strcoll.inl:99(my_scan_weight_utf8mb3_general_ci)[0x55b350460113]

sql/event_data_objects.cc:1614(event_basic_identifier_equal(st_mysql_const_lex_string const*, st_mysql_const_lex_string const*, Event_basic*))[0x55b34fd4adea]

sql/event_queue.cc:427(Event_queue::find_n_remove_event(st_mysql_const_lex_string const*, st_mysql_const_lex_string const*))[0x55b34fffec23]

sql/event_queue.cc:275(Event_queue::update_event(THD*, st_mysql_const_lex_string const*, st_mysql_const_lex_string const*, Event_queue_element*))[0x55b34ffff08a]

sql/events.cc:555(Events::update_event(THD*, Event_parse_data*, st_mysql_const_lex_string*, st_mysql_const_lex_string*))[0x55b34fd4c039]

sql/sql_parse.cc:5328(mysql_execute_command(THD*))[0x55b34fc67371]

sql/sql_parse.cc:8175(mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool))[0x55b34fc679aa]

sql/sql_parse.cc:1893(dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool))[0x55b34fc692eb]

sql/sql_parse.cc:1377(do_command(THD*))[0x55b34fc6ae33]

sql/sql_connect.cc:1419(do_handle_one_connection(CONNECT*, bool))[0x55b34fd66861]

sql/sql_connect.cc:1313(handle_one_connection)[0x55b34fd66ced]

perfschema/pfs.cc:2204(pfs_spawn_thread)[0x55b3500ee9ab]

??:0(__libpthread_freeres)[0x7f32b03cdf3b]

??:0(clone)[0x7f32b0305840]

Trying to get some variables.

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

Query (0x7f30ec033860): Alter definer='root'@'localhost' event ALTER_EVENT_145 on schedule at current_timestamp + interval '2-10' year_month on completion not preserve rename to a disable on slave

Connection ID (thread ID): 1726

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 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 /data/Ruby/data

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        unlimited            unlimited            bytes

Max resident set          unlimited            unlimited            bytes

Max processes             126424               126424               processes

Max open files            65535                65535                files

Max locked memory         67108864             67108864             bytes

Max address space         unlimited            unlimited            bytes

Max file locks            unlimited            unlimited            locks

Max pending signals       126424               126424               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/core-%e-%u-%s-%t-%h

core ：

(gdb) bt

#0  0x00007f32b03d5281 in pthread_kill () from /usr/lib64/libpthread.so.0

#1  0x000055b350413a29 in my_write_core (sig=<optimized out>) at /data/fuxi_ci_workspace/6386108bbca18277f790c3ff/mysys/stacktrace.c:424

#2  0x000055b34fe6ed40 in handle_fatal_signal (sig=11) at /data/fuxi_ci_workspace/6386108bbca18277f790c3ff/sql/signal_handler.cc:344

#3  <signal handler called>

#4  my_scan_weight_utf8mb3_general_ci (end=0xa8 <error: Cannot access memory at address 0xa8>, str=0x0, weight=<synthetic pointer>) at /data/fuxi_ci_workspace/6386108bbca18277f790c3ff/strings/strcoll.inl:99

#5  my_scan_weight_utf8mb3_general_ci (end=0xa8 <error: Cannot access memory at address 0xa8>, str=0x0, weight=<synthetic pointer>) at /data/fuxi_ci_workspace/6386108bbca18277f790c3ff/strings/strcoll.inl:90

#6  my_strnncollsp_utf8mb3_general_ci (cs=<optimized out>, a=0x7f30ec033e30 "ALTER_EVENT_145", a_length=<optimized out>, b=0x0, b_length=<optimized out>)

    at /data/fuxi_ci_workspace/6386108bbca18277f790c3ff/strings/strcoll.inl:256

#7  0x000055b34fd4adea in event_basic_identifier_equal (db=db@entry=0x7f30ec033ad0, name=name@entry=0x7f30ec033ae0, b=b@entry=0x7f30bc021f40) at /data/fuxi_ci_workspace/6386108bbca18277f790c3ff/sql/event_data_objects.cc:1614

#8  0x000055b34fffec23 in Event_queue::find_n_remove_event (this=this@entry=0x55b35463b910, db=db@entry=0x7f30ec033ad0, name=name@entry=0x7f30ec033ae0)

    at /data/fuxi_ci_workspace/6386108bbca18277f790c3ff/sql/event_queue.cc:427

#9  0x000055b34ffff08a in Event_queue::update_event (this=0x55b35463b910, thd=0x7f30ec001198, dbname=0x7f30ec033ad0, name=0x7f30ec033ae0, new_element=0x0)

    at /data/fuxi_ci_workspace/6386108bbca18277f790c3ff/sql/event_queue.cc:265

#10 0x000055b34fd4c039 in Events::update_event (thd=thd@entry=0x7f30ec001198, parse_data=0x7f30ec033ab8, new_dbname=<optimized out>, new_name=<optimized out>)

    at /data/fuxi_ci_workspace/6386108bbca18277f790c3ff/sql/events.cc:551

#11 0x000055b34fc67371 in mysql_execute_command (thd=0x7f30ec001198) at /data/fuxi_ci_workspace/6386108bbca18277f790c3ff/sql/sql_parse.cc:5328

#12 0x000055b34fc679aa in mysql_parse (thd=thd@entry=0x7f30ec001198, rawbuf=<optimized out>, length=<optimized out>, parser_state=parser_state@entry=0x7f3210499510, is_com_multi=is_com_multi@entry=false, 

    is_next_command=is_next_command@entry=false) at /data/fuxi_ci_workspace/6386108bbca18277f790c3ff/sql/sql_parse.cc:8174

#13 0x000055b34fc692eb in dispatch_command (command=COM_QUERY, thd=0x7f30ec001198, packet=<optimized out>, packet_length=<optimized out>, is_com_multi=<optimized out>, is_next_command=<optimized out>)

    at /data/fuxi_ci_workspace/6386108bbca18277f790c3ff/sql/sql_class.h:1290

#14 0x000055b34fc6ae33 in do_command (thd=0x7f30ec001198) at /data/fuxi_ci_workspace/6386108bbca18277f790c3ff/sql/sql_parse.cc:1377

#15 0x000055b34fd66861 in do_handle_one_connection (connect=<optimized out>, connect@entry=0x55b35464d698, put_in_cache=put_in_cache@entry=true) at /data/fuxi_ci_workspace/6386108bbca18277f790c3ff/sql/sql_connect.cc:1419

#16 0x000055b34fd66ced in handle_one_connection (arg=arg@entry=0x55b35464d698) at /data/fuxi_ci_workspace/6386108bbca18277f790c3ff/sql/sql_connect.cc:1313

#17 0x000055b3500ee9ab in pfs_spawn_thread (arg=0x55b35464d708) at /data/fuxi_ci_workspace/6386108bbca18277f790c3ff/storage/perfschema/pfs.cc:2201

#18 0x00007f32b03cdf3b in ?? () from /usr/lib64/libpthread.so.0

#19 0x00007f32b0305840 in clone () from /usr/lib64/libc.so.6