[MDEV-23180]  rpl.rpl_stm_start_stop_slave failed in buildbot Created: 2020-07-15  Updated: 2020-07-15

Status: Open
Project: MariaDB Server
Component/s: Tests
Affects Version/s: 10.5
Fix Version/s: 10.5

Type: Bug Priority: Major
Reporter: Alice Sherepa Assignee: Andrei Elkin
Resolution: Unresolved Votes: 0
Labels: None


 Description   

http://buildbot.askmonty.org/buildbot/builders/kvm-asan/builds/3995/steps/mtr_nm/logs/stdio

rpl.rpl_stm_start_stop_slave 'innodb,stmt' w2 [ fail ]
        Test ended at 2020-07-15 13:38:27
 
CURRENT_TEST: rpl.rpl_stm_start_stop_slave
mysqltest: In included file "/home/buildbot/buildbot/build/mariadb-10.5.5/mysql-test/suite/rpl/./include/rpl_start_stop_slave.test": 
included from /home/buildbot/buildbot/build/mariadb-10.5.5/mysql-test/suite/rpl/t/rpl_stm_start_stop_slave.test at line 18:
At line 35: query 'stop slave io_thread' failed: 2013: Lost connection to MySQL server during query
 
The result from queries just before the failure was:
< snip >
connection master;
SET @old_innodb_flush_log_at_trx_commit= @@global.innodb_flush_log_at_trx_commit;
SET @@global.innodb_flush_log_at_trx_commit= 0;
SET @@session.binlog_direct_non_transactional_updates= FALSE;
connection master;
call mtr.add_suppression("Unsafe statement written to the binary log using statement format since BINLOG_FORMAT = STATEMENT");
connection slave;
call mtr.add_suppression("Unsafe statement written to the binary log using statement format since BINLOG_FORMAT = STATEMENT");
connection master;
create table t1(n int);
connection slave;
stop slave;
include/wait_for_slave_to_stop.inc
connection master;
connection slave;
start slave;
stop slave io_thread;
 
More results from queries before failure can be found in /dev/shm/var/2/log/rpl_stm_start_stop_slave.log
 
 
Server [mysqld.2 - pid: 51575, winpid: 51575, exit: 256] failed during test run
Server log from this test:
----------SERVER LOG START-----------
2020-07-15 13:38:17 0 [Note] /home/buildbot/buildbot/build/mariadb-10.5.5/sql/mariadbd (mysqld 10.5.5-MariaDB-log) starting as process 51577 ...
2020-07-15 13:38:17 0 [Warning] Could not increase number of max_open_files to more than 1024 (request: 32186)
2020-07-15 13:38:17 0 [Warning] Changed limits: max_open_files: 1024  max_connections: 151 (was 151)  table_cache: 421 (was 2000)
2020-07-15 13:38:17 0 [Warning] setrlimit could not change the size of core files to 'infinity';  We may not be able to generate a core file on signals
2020-07-15 13:38:17 0 [Note] Plugin 'partition' is disabled.
2020-07-15 13:38:17 0 [Note] Plugin 'SEQUENCE' is disabled.
2020-07-15 13:38:17 0 [Note] InnoDB: Using Linux native AIO
2020-07-15 13:38:17 0 [Note] InnoDB: Uses event mutexes
2020-07-15 13:38:17 0 [Note] InnoDB: Compressed tables use zlib 1.2.11
2020-07-15 13:38:17 0 [Note] InnoDB: Number of pools: 1
2020-07-15 13:38:17 0 [Note] InnoDB: Using generic crc32 instructions
2020-07-15 13:38:17 0 [Note] mariadbd: O_TMPFILE is not supported on /dev/shm/var/tmp/2/mysqld.2 (disabling future attempts)
2020-07-15 13:38:17 0 [Note] InnoDB: Initializing buffer pool, total size = 8388608, chunk size = 8388608
2020-07-15 13:38:17 0 [Note] InnoDB: Completed initialization of buffer pool
2020-07-15 13:38:17 0 [Note] InnoDB: If the mysqld execution user is authorized, page cleaner thread priority can be changed. See the man page of setpriority().
2020-07-15 13:38:17 0 [Note] InnoDB: 128 rollback segments are active.
2020-07-15 13:38:17 0 [Note] InnoDB: Creating shared tablespace for temporary tables
2020-07-15 13:38:17 0 [Note] InnoDB: Setting file './ibtmp1' size to 12 MB. Physically writing the file full; Please wait ...
2020-07-15 13:38:17 0 [Note] InnoDB: File './ibtmp1' size is now 12 MB.
2020-07-15 13:38:17 0 [Note] InnoDB: 10.5.5 started; log sequence number 47225; transaction id 28
2020-07-15 13:38:17 0 [Note] InnoDB: Loading buffer pool(s) from /dev/shm/var/2/mysqld.2/data/ib_buffer_pool
2020-07-15 13:38:17 0 [Note] Plugin 'INNODB_SYS_DATAFILES' is disabled.
2020-07-15 13:38:17 0 [Note] Plugin 'INNODB_SYS_TABLESTATS' is disabled.
2020-07-15 13:38:17 0 [Note] Plugin 'INNODB_CMP' is disabled.
2020-07-15 13:38:17 0 [Note] Plugin 'THREAD_POOL_WAITS' is disabled.
2020-07-15 13:38:17 0 [Note] Plugin 'INNODB_CMP_RESET' is disabled.
2020-07-15 13:38:17 0 [Note] Plugin 'THREAD_POOL_QUEUES' is disabled.
2020-07-15 13:38:17 0 [Note] Plugin 'FEEDBACK' is disabled.
2020-07-15 13:38:17 0 [Note] Plugin 'INNODB_FT_INDEX_TABLE' is disabled.
2020-07-15 13:38:17 0 [Note] Plugin 'THREAD_POOL_GROUPS' is disabled.
2020-07-15 13:38:17 0 [Note] Plugin 'INNODB_CMP_PER_INDEX_RESET' is disabled.
2020-07-15 13:38:17 0 [Note] Plugin 'INNODB_FT_INDEX_CACHE' is disabled.
2020-07-15 13:38:17 0 [Note] Plugin 'INNODB_FT_BEING_DELETED' is disabled.
2020-07-15 13:38:17 0 [Note] Plugin 'INNODB_CMPMEM_RESET' is disabled.
2020-07-15 13:38:17 0 [Note] Plugin 'INNODB_FT_DEFAULT_STOPWORD' is disabled.
2020-07-15 13:38:17 0 [Note] Plugin 'INNODB_FT_CONFIG' is disabled.
2020-07-15 13:38:17 0 [Note] Plugin 'INNODB_SYS_TABLESPACES' is disabled.
2020-07-15 13:38:17 0 [Note] Plugin 'INNODB_SYS_SEMAPHORE_WAITS' is disabled.
2020-07-15 13:38:17 0 [Note] Plugin 'INNODB_MUTEXES' is disabled.
2020-07-15 13:38:17 0 [Note] Plugin 'user_variables' is disabled.
2020-07-15 13:38:17 0 [Note] Plugin 'INNODB_TABLESPACES_ENCRYPTION' is disabled.
2020-07-15 13:38:17 0 [Note] Plugin 'INNODB_FT_DELETED' is disabled.
2020-07-15 13:38:17 0 [Note] Plugin 'THREAD_POOL_STATS' is disabled.
2020-07-15 13:38:17 0 [Note] Plugin 'unix_socket' is disabled.
2020-07-15 13:38:17 0 [Note] InnoDB: Buffer pool(s) load completed at 200715 13:38:17
2020-07-15 13:38:17 0 [Warning] /home/buildbot/buildbot/build/mariadb-10.5.5/sql/mariadbd: unknown variable 'loose-feedback-debug-startup-interval=20'
2020-07-15 13:38:17 0 [Warning] /home/buildbot/buildbot/build/mariadb-10.5.5/sql/mariadbd: unknown variable 'loose-feedback-debug-first-interval=60'
2020-07-15 13:38:17 0 [Warning] /home/buildbot/buildbot/build/mariadb-10.5.5/sql/mariadbd: unknown variable 'loose-feedback-debug-interval=60'
2020-07-15 13:38:17 0 [Warning] /home/buildbot/buildbot/build/mariadb-10.5.5/sql/mariadbd: unknown option '--loose-pam-debug'
2020-07-15 13:38:17 0 [Warning] /home/buildbot/buildbot/build/mariadb-10.5.5/sql/mariadbd: unknown option '--loose-aria'
2020-07-15 13:38:17 0 [Warning] /home/buildbot/buildbot/build/mariadb-10.5.5/sql/mariadbd: unknown variable 'loose-debug-sync-timeout=300'
2020-07-15 13:38:18 0 [Note] Server socket created on IP: '127.0.0.1'.
2020-07-15 13:38:18 0 [Note] Reading of all Master_info entries succeeded
2020-07-15 13:38:18 0 [Note] Added new Master_info '' to hash table
2020-07-15 13:38:18 0 [Note] /home/buildbot/buildbot/build/mariadb-10.5.5/sql/mariadbd: ready for connections.
Version: '10.5.5-MariaDB-log'  socket: '/dev/shm/var/tmp/2/mysqld.2.sock'  port: 16061  MariaDB Server
2020-07-15 13:38:19 5 [Note] Deleted Master_info file '/dev/shm/var/2/mysqld.2/data/master.info'.
2020-07-15 13:38:19 5 [Note] Deleted Master_info file '/dev/shm/var/2/mysqld.2/data/relay-log.info'.
2020-07-15 13:38:19 5 [Note] Master connection name: ''  Master_info_file: 'master.info'  Relay_info_file: 'relay-log.info'
2020-07-15 13:38:19 5 [Note] 'CHANGE MASTER TO executed'. Previous state master_host='', master_port='3306', master_log_file='', master_log_pos='4'. New state master_host='127.0.0.1', master_port='16060', master_log_file='master-bin.000001', master_log_pos='4'.
2020-07-15 13:38:19 7 [Note] Slave I/O thread: Start asynchronous replication to master 'root@127.0.0.1:16060' in log 'master-bin.000001' at position 4
2020-07-15 13:38:19 8 [Note] Slave SQL thread initialized, starting replication in log 'master-bin.000001' at position 4, relay log './slave-relay-bin.000001' position: 4
2020-07-15 13:38:19 7 [Note] Slave I/O thread: connected to master 'root@127.0.0.1:16060',replication started in log 'master-bin.000001' at position 4
2020-07-15 13:38:19 8 [Note] Error reading relay log event: slave SQL thread was killed
2020-07-15 13:38:19 8 [Note] Slave SQL thread exiting, replication stopped in log 'master-bin.000001' at position 846
2020-07-15 13:38:19 7 [Note] Slave I/O thread exiting, read up to log 'master-bin.000001', position 846
2020-07-15 13:38:22 11 [Note] Slave I/O thread: Start asynchronous replication to master 'root@127.0.0.1:16060' in log 'master-bin.000001' at position 846
2020-07-15 13:38:22 11 [Note] Slave I/O thread: connected to master 'root@127.0.0.1:16060',replication started in log 'master-bin.000001' at position 846
2020-07-15 13:38:22 12 [Note] Slave SQL thread initialized, starting replication in log 'master-bin.000001' at position 846, relay log './slave-relay-bin.000002' position: 1146
2020-07-15 13:38:22 11 [Note] Slave I/O thread exiting, read up to log 'master-bin.000001', position 55437
=================================================================
==51577==ERROR: AddressSanitizer: heap-use-after-free on address 0x6160000a0298 at pc 0x564f9d9c7ee3 bp 0x7f12ebd0f730 sp 0x7f12ebd0f720
READ of size 4 at 0x6160000a0298 thread T22
    #0 0x564f9d9c7ee2 in vio_socket_shutdown /home/buildbot/buildbot/build/mariadb-10.5.5/vio/viosocket.c:325
    #1 0x564f9cb1c7d9 in THD::awake_no_mutex(killed_state) /home/buildbot/buildbot/build/mariadb-10.5.5/sql/sql_class.cc:1905
    #2 0x564f9c9dd735 in terminate_slave_thread /home/buildbot/buildbot/build/mariadb-10.5.5/sql/slave.cc:1234
    #3 0x564f9c9e498d in terminate_slave_threads(Master_info*, int, bool) /home/buildbot/buildbot/build/mariadb-10.5.5/sql/slave.cc:1111
    #4 0x564f9c9e498d in terminate_slave_threads(Master_info*, int, bool) /home/buildbot/buildbot/build/mariadb-10.5.5/sql/slave.cc:1067
    #5 0x564f9ccb1229 in stop_slave(THD*, Master_info*, bool) /home/buildbot/buildbot/build/mariadb-10.5.5/sql/sql_repl.cc:3313
    #6 0x564f9cc5aaf1 in mysql_execute_command(THD*) /home/buildbot/buildbot/build/mariadb-10.5.5/sql/sql_parse.cc:4268
    #7 0x564f9cc1bfac in mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool) /home/buildbot/buildbot/build/mariadb-10.5.5/sql/sql_parse.cc:7993
    #8 0x564f9cc47d16 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool) /home/buildbot/buildbot/build/mariadb-10.5.5/sql/sql_parse.cc:1866
    #9 0x564f9cc4dad4 in do_command(THD*) /home/buildbot/buildbot/build/mariadb-10.5.5/sql/sql_parse.cc:1347
    #10 0x564f9cff80fc in do_handle_one_connection(CONNECT*, bool) /home/buildbot/buildbot/build/mariadb-10.5.5/sql/sql_connect.cc:1411
    #11 0x564f9cff8c6c in handle_one_connection /home/buildbot/buildbot/build/mariadb-10.5.5/sql/sql_connect.cc:1313
    #12 0x564f9dc61748 in pfs_spawn_thread /home/buildbot/buildbot/build/mariadb-10.5.5/storage/perfschema/pfs.cc:2201
    #13 0x7f12fd4f0608 in start_thread (/lib/x86_64-linux-gnu/libpthread.so.0+0x9608)
    #14 0x7f12fd0df102 in __clone (/lib/x86_64-linux-gnu/libc.so.6+0x122102)
 
0x6160000a0298 is located 24 bytes inside of 520-byte region [0x6160000a0280,0x6160000a0488)
freed by thread T24 here:
    #0 0x7f12fd7257cf in __interceptor_free (/lib/x86_64-linux-gnu/libasan.so.5+0x10d7cf)
    #1 0x564f9d2c54dd in end_server /home/buildbot/buildbot/build/mariadb-10.5.5/sql-common/client.c:730
    #2 0x564f9d2cdc2c in mysql_close /home/buildbot/buildbot/build/mariadb-10.5.5/sql-common/client.c:3506
    #3 0x564f9d2cdc2c in mysql_close /home/buildbot/buildbot/build/mariadb-10.5.5/sql-common/client.c:3499
    #4 0x564f9c9fe43c in handle_slave_io /home/buildbot/buildbot/build/mariadb-10.5.5/sql/slave.cc:5135
    #5 0x564f9dc61748 in pfs_spawn_thread /home/buildbot/buildbot/build/mariadb-10.5.5/storage/perfschema/pfs.cc:2201
    #6 0x7f12fd4f0608 in start_thread (/lib/x86_64-linux-gnu/libpthread.so.0+0x9608)
 
previously allocated by thread T24 here:
    #0 0x7f12fd725bc8 in malloc (/lib/x86_64-linux-gnu/libasan.so.5+0x10dbc8)
    #1 0x564f9e83da53 in my_malloc /home/buildbot/buildbot/build/mariadb-10.5.5/mysys/my_malloc.c:88
    #2 0x564f9d9c6126 in mysql_socket_vio_new /home/buildbot/buildbot/build/mariadb-10.5.5/vio/vio.c:243
    #3 0x564f9d9c6f07 in vio_new /home/buildbot/buildbot/build/mariadb-10.5.5/vio/vio.c:262
    #4 0x564f9d2d2860 in mysql_real_connect /home/buildbot/buildbot/build/mariadb-10.5.5/sql-common/client.c:2893
    #5 0x564f9c9dca43 in connect_to_master /home/buildbot/buildbot/build/mariadb-10.5.5/sql/slave.cc:7360
    #6 0x564f9c9fda73 in safe_connect /home/buildbot/buildbot/build/mariadb-10.5.5/sql/slave.cc:7272
    #7 0x564f9c9fda73 in handle_slave_io /home/buildbot/buildbot/build/mariadb-10.5.5/sql/slave.cc:4807
    #8 0x564f9dc61748 in pfs_spawn_thread /home/buildbot/buildbot/build/mariadb-10.5.5/storage/perfschema/pfs.cc:2201
    #9 0x7f12fd4f0608 in start_thread (/lib/x86_64-linux-gnu/libpthread.so.0+0x9608)
 
Thread T22 created by T0 here:
    #0 0x7f12fd652805 in pthread_create (/lib/x86_64-linux-gnu/libasan.so.5+0x3a805)
    #1 0x564f9dc619e6 in my_thread_create /home/buildbot/buildbot/build/mariadb-10.5.5/storage/perfschema/my_thread.h:34
    #2 0x564f9dc619e6 in pfs_spawn_thread_v1 /home/buildbot/buildbot/build/mariadb-10.5.5/storage/perfschema/pfs.cc:2252
    #3 0x564f9c9906bc in inline_mysql_thread_create /home/buildbot/buildbot/build/mariadb-10.5.5/include/mysql/psi/mysql_thread.h:1321
    #4 0x564f9c9906bc in create_thread_to_handle_connection(CONNECT*) /home/buildbot/buildbot/build/mariadb-10.5.5/sql/mysqld.cc:6018
    #5 0x564f9c99c1e4 in handle_accepted_socket(st_mysql_socket, st_mysql_socket) /home/buildbot/buildbot/build/mariadb-10.5.5/sql/mysqld.cc:6142
    #6 0x564f9c99cc93 in handle_connections_sockets() /home/buildbot/buildbot/build/mariadb-10.5.5/sql/mysqld.cc:6269
    #7 0x564f9c99e999 in mysqld_main(int, char**) /home/buildbot/buildbot/build/mariadb-10.5.5/sql/mysqld.cc:5664
    #8 0x7f12fcfe40b2 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x270b2)
 
Thread T24 created by T22 here:
    #0 0x7f12fd652805 in pthread_create (/lib/x86_64-linux-gnu/libasan.so.5+0x3a805)
    #1 0x564f9dc619e6 in my_thread_create /home/buildbot/buildbot/build/mariadb-10.5.5/storage/perfschema/my_thread.h:34
    #2 0x564f9dc619e6 in pfs_spawn_thread_v1 /home/buildbot/buildbot/build/mariadb-10.5.5/storage/perfschema/pfs.cc:2252
    #3 0x564f9c9e4f06 in inline_mysql_thread_create /home/buildbot/buildbot/build/mariadb-10.5.5/include/mysql/psi/mysql_thread.h:1321
    #4 0x564f9c9e4f06 in start_slave_thread(unsigned int, void* (*)(void*), st_mysql_mutex*, st_mysql_mutex*, st_mysql_cond*, unsigned int volatile*, unsigned long volatile*, Master_info*) /home/buildbot/buildbot/build/mariadb-10.5.5/sql/slave.cc:1299
    #5 0x564f9c9e54eb in start_slave_threads(THD*, bool, bool, Master_info*, char const*, char const*, int) /home/buildbot/buildbot/build/mariadb-10.5.5/sql/slave.cc:1415
    #6 0x564f9ccb05c0 in start_slave(THD*, Master_info*, bool) /home/buildbot/buildbot/build/mariadb-10.5.5/sql/sql_repl.cc:3237
    #7 0x564f9cc5abfe in mysql_execute_command(THD*) /home/buildbot/buildbot/build/mariadb-10.5.5/sql/sql_parse.cc:4232
    #8 0x564f9cc1bfac in mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool) /home/buildbot/buildbot/build/mariadb-10.5.5/sql/sql_parse.cc:7993
    #9 0x564f9cc47d16 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool) /home/buildbot/buildbot/build/mariadb-10.5.5/sql/sql_parse.cc:1866
    #10 0x564f9cc4dad4 in do_command(THD*) /home/buildbot/buildbot/build/mariadb-10.5.5/sql/sql_parse.cc:1347
    #11 0x564f9cff80fc in do_handle_one_connection(CONNECT*, bool) /home/buildbot/buildbot/build/mariadb-10.5.5/sql/sql_connect.cc:1411
    #12 0x564f9cff8c6c in handle_one_connection /home/buildbot/buildbot/build/mariadb-10.5.5/sql/sql_connect.cc:1313
    #13 0x564f9dc61748 in pfs_spawn_thread /home/buildbot/buildbot/build/mariadb-10.5.5/storage/perfschema/pfs.cc:2201
    #14 0x7f12fd4f0608 in start_thread (/lib/x86_64-linux-gnu/libpthread.so.0+0x9608)
 
SUMMARY: AddressSanitizer: heap-use-after-free /home/buildbot/buildbot/build/mariadb-10.5.5/vio/viosocket.c:325 in vio_socket_shutdown
Shadow bytes around the buggy address:
  0x0c2c8000c000: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x0c2c8000c010: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x0c2c8000c020: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x0c2c8000c030: fd fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c2c8000c040: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
=>0x0c2c8000c050: fd fd fd[fd]fd fd fd fd fd fd fd fd fd fd fd fd
  0x0c2c8000c060: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x0c2c8000c070: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x0c2c8000c080: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x0c2c8000c090: fd fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c2c8000c0a0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
Shadow byte legend (one shadow byte represents 8 application bytes):
  Addressable:           00
  Partially addressable: 01 02 03 04 05 06 07 
  Heap left redzone:       fa
  Freed heap region:       fd
  Stack left redzone:      f1
  Stack mid redzone:       f2
  Stack right redzone:     f3
  Stack after return:      f5
  Stack use after scope:   f8
  Global redzone:          f9
  Global init order:       f6
  Poisoned by user:        f7
  Container overflow:      fc
  Array cookie:            ac
  Intra object redzone:    bb
  ASan internal:           fe
  Left alloca redzone:     ca
  Right alloca redzone:    cb
  Shadow gap:              cc
==51577==ABORTING
200715 13:38:24 [ERROR] mysqld got signal 6 ;
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: 10.5.5-MariaDB-log
key_buffer_size=1048576
read_buffer_size=131072
max_used_connections=4
max_threads=153
thread_count=8
It is possible that mysqld could use up to 
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 63578 K  bytes of memory
Hope that's ok; if not, decrease some variables in the equation.
 
Thread pointer: 0x62b00010a218
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 = 0x7f12ebd12780 thread_stack 0x5fc00
??:0(__interceptor_tcgetattr)[0x7f12fd684d30]
/home/buildbot/buildbot/build/mariadb-10.5.5/sql/mariadbd(my_print_stacktrace+0xee)[0x564f9e84826e]
/home/buildbot/buildbot/build/mariadb-10.5.5/sql/mariadbd(handle_fatal_signal+0xb44)[0x564f9d366fd4]
??:0(__restore_rt)[0x7f12fd4fc3c0]
??:0(gsignal)[0x7f12fd00318b]
??:0(abort)[0x7f12fcfe2859]
??:0(__sanitizer_set_report_fd)[0x7f12fd7436a2]
??:0(__sanitizer_get_module_and_offset_for_pc)[0x7f12fd74e24c]
??:0(__sanitizer_ptr_cmp)[0x7f12fd72f8ec]
??:0(__asan_on_error)[0x7f12fd72f363]
??:0(__asan_report_load4)[0x7f12fd73008b]
/home/buildbot/buildbot/build/mariadb-10.5.5/sql/mariadbd(+0x1b77ee3)[0x564f9d9c7ee3]
/home/buildbot/buildbot/build/mariadb-10.5.5/sql/mariadbd(_ZN3THD14awake_no_mutexE12killed_state+0x76a)[0x564f9cb1c7da]
/home/buildbot/buildbot/build/mariadb-10.5.5/sql/mariadbd(+0xb8d736)[0x564f9c9dd736]
/home/buildbot/buildbot/build/mariadb-10.5.5/sql/mariadbd(_Z23terminate_slave_threadsP11Master_infoib+0x29e)[0x564f9c9e498e]
/home/buildbot/buildbot/build/mariadb-10.5.5/sql/mariadbd(_Z10stop_slaveP3THDP11Master_infob+0x1da)[0x564f9ccb122a]
/home/buildbot/buildbot/build/mariadb-10.5.5/sql/mariadbd(_Z21mysql_execute_commandP3THD+0xa772)[0x564f9cc5aaf2]
vio/viosocket.c:325(vio_socket_shutdown)[0x564f9cc1bfad]
sql/sql_class.cc:1910(THD::awake_no_mutex(killed_state))[0x564f9cc47d17]
psi/mysql_thread.h:824(terminate_slave_thread(THD*, st_mysql_mutex*, st_mysql_cond*, unsigned int volatile*, bool))[0x564f9cc4dad5]
sql/sql_repl.cc:3323(stop_slave(THD*, Master_info*, bool))[0x564f9cff80fd]
sql/sql_parse.cc:4268(mysql_execute_command(THD*))[0x564f9cff8c6d]
sql/sql_parse.cc:8010(mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool))[0x564f9dc61749]
??:0(start_thread)[0x7f12fd4f0609]
??:0(clone)[0x7f12fd0df103]
 
Trying to get some variables.
Some pointers may be invalid and cause the dump to abort.
Query (0x62b000111238): stop slave io_thread
Connection ID (thread ID): 9
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 /dev/shm/var/2/mysqld.2/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        0                    0                    bytes     
Max resident set          unlimited            unlimited            bytes     
Max processes             23441                23441                processes 
Max open files            1024                 1024                 files     
Max locked memory         67108864             67108864             bytes     
Max address space         unlimited            unlimited            bytes     
Max file locks            unlimited            unlimited            locks     
Max pending signals       23441                23441                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: |/usr/share/apport/apport %p %s %c %d %P %E
 
----------SERVER LOG END-------------
 
 
 - saving '/dev/shm/var/2/log/rpl.rpl_stm_start_stop_slave-innodb,stmt/' to '/dev/shm/var/log/rpl.rpl_stm_start_stop_slave-innodb,stmt/'
worker[2] > Restart  - not started
worker[2] > Restart  - not started
***Warnings generated in error logs during shutdown after running tests: rpl.rpl_stm_start_stop_slave
 
==51577==ERROR: AddressSanitizer: heap-use-after-free on address 0x6160000a0298 at pc 0x564f9d9c7ee3 bp 0x7f12ebd0f730 sp 0x7f12ebd0f720
SUMMARY: AddressSanitizer: heap-use-after-free /home/buildbot/buildbot/build/mariadb-10.5.5/vio/viosocket.c:325 in vio_socket_shutdown
Attempting backtrace. You can use the following information to find out


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