[#MDEV-22473] binlog.binlog_show_binlog_event_random_pos failed in buildbot, server crashed in read_log

10.3 cfa0506f8a7bc9855cbc8869c9cfbb4e kvm-deb-bionic-ppc64le
binlog.binlog_show_binlog_event_random_pos 'disable_checksum,innodb,stmt' w1 [ fail ]
Test ended at 2020-02-25 06:02:40

CURRENT_TEST: binlog.binlog_show_binlog_event_random_pos
mysqltest: At line 35: query 'SHOW BINLOG EVENTS FROM $pos LIMIT 100' failed with wrong errno 2013: 'Lost connection to MySQL server during query', instead of 0...

The result from queries just before the failure was:
RESET MASTER;
call mtr.add_suppression("Error in Log_event::read_log_event*");
call mtr.add_suppression("Replication event checksum verification failed while reading from a log file*");
DROP TABLE IF EXISTS t1;
Warnings:
Note 1051 Unknown table 'test.t1'
CREATE TABLE t1 (c1 CHAR(255), c2 CHAR(255), c3 CHAR(255), c4 CHAR(255), c5 CHAR(255));
INSERT INTO t1 VALUES (repeat('a', 255), repeat('a', 255),repeat('a', 255),repeat('a', 255),repeat('a', 255));
INSERT INTO t1 VALUES (repeat('a', 255), repeat('a', 255),repeat('a', 255),repeat('a', 255),repeat('a', 255));
UPDATE t1 SET c1=repeat('b',255);
INSERT INTO t1 VALUES (repeat('a', 255), repeat('a', 255),repeat('a', 255),repeat('a', 255),repeat('a', 255));


Server [mysqld.1 - pid: 24146, winpid: 24146, exit: 256] failed during test run
Server log from this test:
----------SERVER LOG START-----------
2020-02-25 6:02:33 0 [Note] /usr/sbin/mysqld (mysqld 10.3.23-MariaDB-1:10.3.23+maria~bionic-log) starting as process 24147 ...
2020-02-25 6:02:33 0 [Warning] Could not increase number of max_open_files to more than 1024 (request: 32186)
2020-02-25 6:02:33 0 [Warning] Changed limits: max_open_files: 1024 max_connections: 151 (was 151) table_cache: 421 (was 2000)
2020-02-25 6:02:33 0 [Note] Plugin 'partition' is disabled.
2020-02-25 6:02:33 0 [Note] InnoDB: Using Linux native AIO
2020-02-25 6:02:33 0 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2020-02-25 6:02:33 0 [Note] InnoDB: Uses event mutexes
2020-02-25 6:02:33 0 [Note] InnoDB: Compressed tables use zlib 1.2.11
2020-02-25 6:02:33 0 [Note] InnoDB: Number of pools: 1
2020-02-25 6:02:33 0 [Note] InnoDB: Using POWER8 crc32 instructions
2020-02-25 6:02:33 0 [Note] InnoDB: Initializing buffer pool, total size = 8M, instances = 1, chunk size = 8M
2020-02-25 6:02:33 0 [Note] InnoDB: Completed initialization of buffer pool
2020-02-25 6:02:33 0 [Note] InnoDB: If the mysqld execution user is authorized, page cleaner thread priority can be changed. See the man page of setpriority().
2020-02-25 6:02:33 0 [Note] InnoDB: 128 out of 128 rollback segments are active.
2020-02-25 6:02:33 0 [Note] InnoDB: Creating shared tablespace for temporary tables
2020-02-25 6:02:33 0 [Note] InnoDB: Setting file './ibtmp1' size to 12 MB. Physically writing the file full; Please wait ...
2020-02-25 6:02:33 0 [Note] InnoDB: File './ibtmp1' size is now 12 MB.
2020-02-25 6:02:33 0 [Note] InnoDB: Waiting for purge to start
2020-02-25 6:02:33 0 [Note] InnoDB: 10.3.23 started; log sequence number 1635949; transaction id 34
2020-02-25 6:02:33 0 [Note] Plugin 'SEQUENCE' is disabled.
2020-02-25 6:02:33 0 [Note] Plugin 'INNODB_SYS_DATAFILES' is disabled.
2020-02-25 6:02:33 0 [Note] Plugin 'INNODB_SYS_TABLESTATS' is disabled.
2020-02-25 6:02:33 0 [Note] Plugin 'INNODB_MUTEXES' is disabled.
2020-02-25 6:02:33 0 [Note] Plugin 'INNODB_CMP' is disabled.
2020-02-25 6:02:33 0 [Note] Plugin 'INNODB_FT_DELETED' is disabled.
2020-02-25 6:02:33 0 [Note] Plugin 'INNODB_CMP_RESET' is disabled.
2020-02-25 6:02:33 0 [Note] Plugin 'INNODB_TABLESPACES_ENCRYPTION' is disabled.
2020-02-25 6:02:33 0 [Note] Plugin 'INNODB_CMPMEM_RESET' is disabled.
2020-02-25 6:02:33 0 [Note] Plugin 'FEEDBACK' is disabled.
2020-02-25 6:02:33 0 [Note] Plugin 'INNODB_FT_INDEX_TABLE' is disabled.
2020-02-25 6:02:33 0 [Note] InnoDB: Loading buffer pool(s) from /dev/shm/var/1/mysqld.1/data/ib_buffer_pool
2020-02-25 6:02:33 0 [Note] Plugin 'INNODB_CMP_PER_INDEX_RESET' is disabled.
2020-02-25 6:02:33 0 [Note] Plugin 'user_variables' is disabled.
2020-02-25 6:02:33 0 [Note] Plugin 'INNODB_FT_INDEX_CACHE' is disabled.
2020-02-25 6:02:33 0 [Note] Plugin 'INNODB_FT_BEING_DELETED' is disabled.
2020-02-25 6:02:33 0 [Note] Plugin 'INNODB_FT_DEFAULT_STOPWORD' is disabled.
2020-02-25 6:02:33 0 [Note] Plugin 'INNODB_FT_CONFIG' is disabled.
2020-02-25 6:02:33 0 [Note] Plugin 'INNODB_SYS_TABLESPACES' is disabled.
2020-02-25 6:02:33 0 [Note] Plugin 'INNODB_TABLESPACES_SCRUBBING' is disabled.
2020-02-25 6:02:33 0 [Note] Plugin 'INNODB_SYS_SEMAPHORE_WAITS' is disabled.
2020-02-25 6:02:33 0 [Warning] /usr/sbin/mysqld: unknown variable 'loose-feedback-debug-startup-interval=20'
2020-02-25 6:02:33 0 [Warning] /usr/sbin/mysqld: unknown variable 'loose-feedback-debug-first-interval=60'
2020-02-25 6:02:33 0 [Warning] /usr/sbin/mysqld: unknown variable 'loose-feedback-debug-interval=60'
2020-02-25 6:02:33 0 [Warning] /usr/sbin/mysqld: unknown option '--loose-pam-debug'
2020-02-25 6:02:33 0 [Warning] /usr/sbin/mysqld: unknown variable 'loose-debug-sync-timeout=300'
2020-02-25 6:02:33 0 [Note] InnoDB: Buffer pool(s) load completed at 200225 6:02:33
2020-02-25 6:02:33 0 [Note] Server socket created on IP: '127.0.0.1'.
2020-02-25 6:02:33 0 [Note] Reading of all Master_info entries succeeded
2020-02-25 6:02:33 0 [Note] Added new Master_info '' to hash table
2020-02-25 6:02:33 0 [Note] /usr/sbin/mysqld: ready for connections.
Version: '10.3.23-MariaDB-1:10.3.23+maria~bionic-log' socket: '/dev/shm/var/tmp/1/mysqld.1.sock' port: 16060 mariadb.org binary distribution
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 1
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event truncated', data_len: 16777216, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event truncated', data_len: 65536, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Found invalid event in binary log', data_len: 256, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event truncated', data_len: 16777217, event_type: 252
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event truncated', data_len: 65536, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 67109120, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event truncated', data_len: 262145, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 822084608, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 808517636, event_type: 1
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 774910208, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 858665009, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 775106096, event_type: 1
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 841888558, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 858926643, event_type: 4
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 758329902, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 1294807858, event_type: 49
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 1632447795, event_type: 48
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 1918979373, event_type: 46
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 1769103693, event_type: 51
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 1634300513, event_type: 46
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 1147234674, event_type: 50
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 1111777641, event_type: 51
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 759317601, event_type: 45
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 825049668, event_type: 77
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 976301378, event_type: 97
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 825897261, event_type: 114
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 808532529, event_type: 105
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 774910266, event_type: 97
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 858665009, event_type: 68
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 775106096, event_type: 66
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 841888558, event_type: 45
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 858926643, event_type: 49
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 724775470, event_type: 58
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 1831547698, event_type: 49
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 1634544435, event_type: 48
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 1918987563, event_type: 46
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 1769103725, event_type: 51
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 1634300513, event_type: 46
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 2120313202, event_type: 50
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 1652449641, event_type: 51
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 1768062561, event_type: 43
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 1869177470, event_type: 109
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 1852795234, event_type: 97
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 1768845161, event_type: 114
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 1667853935, event_type: 105
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 761489774, event_type: 97
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 1814913897, event_type: 126
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 1869360483, event_type: 98
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 1735355437, event_type: 105
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event truncated', data_len: 6778732, event_type: 111
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event truncated', data_len: 26479, event_type: 110
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Found invalid event in binary log', data_len: 103, event_type: 105
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 99
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 45
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 108
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 111
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 103
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 3372220416, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 4274585600, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 1425983744, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 1582628553, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 324949246, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 940793428, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 221778782, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event truncated', data_len: 866323, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 134221112, event_type: 201
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event truncated', data_len: 524301, event_type: 254
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 301991936, event_type: 84
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event truncated', data_len: 1179656, event_type: 94
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 67113472, event_type: 19
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 67371026, event_type: 56
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 67372032, event_type: 13
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 67372036, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 302253060, event_type: 8
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event truncated', data_len: 1180676, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event truncated', data_len: 4612, event_type: 18
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 3825205266, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event truncated', data_len: 14942208, event_type: 4
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 67167232, event_type: 4
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 436469988, event_type: 4
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 135922688, event_type: 4
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event truncated', data_len: 530948, event_type: 18
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Found invalid event in binary log', data_len: 2074, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 8, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 134217728, event_type: 228
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 134742016, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 134744064, event_type: 4
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 34080776, event_type: 26
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event truncated', data_len: 133128, event_type: 8
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Found invalid event in binary log', data_len: 520, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 2, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 167772160, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 168427520, event_type: 8
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 168430080, event_type: 8
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event truncated', data_len: 657930, event_type: 8
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event truncated', data_len: 2570, event_type: 2
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 10, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 10
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 10
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 10
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event invalid', data_len: 0, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 67108864, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 319029248, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 68355072, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event truncated', data_len: 267012, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 218104851, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 135069700, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 134745344, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 134744077, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 168298504, event_type: 4
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 168429576, event_type: 19
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 168430088, event_type: 4
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event truncated', data_len: 657930, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 1845496330, event_type: 13
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 124649482, event_type: 8
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 621243904, event_type: 8
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 321193838, event_type: 8
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 3373475079, event_type: 10
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 4274590501, event_type: 10
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 1425983763, event_type: 10
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 1582628553, event_type: 0
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 2740868350, event_type: 110
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event too big', data_len: 27483732, event_type: 7
2020-02-25 6:02:34 10 [ERROR] Error in Log_event::read_log_event(): 'Event truncated', data_len: 107358, event_type: 37
200225 6:02:34 [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: 10.3.23-MariaDB-1:10.3.23+maria~bionic-log
key_buffer_size=1048576
read_buffer_size=131072
max_used_connections=1
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 = 63199 K bytes of memory
Hope that's ok; if not, decrease some variables in the equation.

Thread pointer: 0x75415c000c08
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 = 0x7541a6f47568 thread_stack 0x49000
/usr/sbin/mysqld(my_print_stacktrace+0x44)[0x92144c8b074]
/usr/sbin/mysqld(handle_fatal_signal+0x428)[0x921445901f8]
linux-vdso64.so.1(__kernel_sigtramp_rt64+0x0)[0x7541b2fb04d8]
/lib/powerpc64le-linux-gnu/libc.so.6(+0xc7018)[0x7541b23b7018]
/usr/sbin/mysqld(_ZN9Log_event14read_log_eventEPKcjPS1_PK28Format_description_log_eventc+0x8d4)[0x921446fb5f4]
/usr/sbin/mysqld(_ZN9Log_event14read_log_eventEP11st_io_cachePK28Format_description_log_eventc+0xe8)[0x921446fbe18]
/usr/sbin/mysqld(_Z24mysql_show_binlog_eventsP3THD+0x810)[0x9214433a620]
/usr/sbin/mysqld(_Z21mysql_execute_commandP3THD+0x6308)[0x92144312cc8]
/usr/sbin/mysqld(_Z11mysql_parseP3THDPcjP12Parser_statebb+0x2dc)[0x921443157fc]
/usr/sbin/mysqld(_Z16dispatch_command19enum_server_commandP3THDPcjbb+0x1af4)[0x921443182c4]
/usr/sbin/mysqld(_Z10do_commandP3THD+0x1b0)[0x92144319020]
/usr/sbin/mysqld(_Z24do_handle_one_connectionP7CONNECT+0x490)[0x92144423930]
/usr/sbin/mysqld(handle_one_connection+0x74)[0x92144423ac4]
/usr/sbin/mysqld(+0xee6028)[0x92144c16028]
/lib/powerpc64le-linux-gnu/libpthread.so.0(+0x885c)[0x7541b28a885c]
/lib/powerpc64le-linux-gnu/libc.so.6(clone+0x98)[0x7541b2449028]

Trying to get some variables.
Some pointers may be invalid and cause the dump to abort.
Query (0x75415c00f760): SHOW BINLOG EVENTS FROM 251 LIMIT 100
Connection ID (thread ID): 10
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 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...
Working directory at /dev/shm/var/1/mysqld.1/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 23961 23961 processes
Max open files 1024 1024 files
Max locked memory 16777216 16777216 bytes
Max address space unlimited unlimited bytes
Max file locks unlimited unlimited locks
Max pending signals 23961 23961 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

----------SERVER LOG END-------------

[MDEV-22473] binlog.binlog_show_binlog_event_random_pos failed in buildbot, server crashed in read_log_event Created: 2020-05-05 Updated: 2020-10-06 Resolved: 2020-09-17
Status:	Closed
Project:	MariaDB Server
Component/s:	Replication, Tests
Affects Version/s:	10.3
Fix Version/s:	10.1.48, 10.2.35, 10.3.26, 10.4.16, 10.5.7

[MDEV-22473] binlog.binlog_show_binlog_event_random_pos failed in buildbot, server crashed in read_log_event Created: 2020-05-05 Updated: 2020-10-06 Resolved: 2020-09-17