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  1. MariaDB Server
  2. MDEV-26640

InnoDB: Assertion failure in file /wrkdirs/usr/ports/databases/mariadb105-server/work/mariadb-10.5.12/storage/innobase/btr/btr0pcur.cc line 520

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      Description

      I cannot access table disk.
      mysqldump was stopped intermidiate of dumpping table disk.
      table disk has about 1500 records.

      > desc disk;
      +---------+---------------------+------+-----+---------+-------+
      | Field   | Type                | Null | Key | Default | Extra |
      +---------+---------------------+------+-----+---------+-------+
      | label   | varchar(10)         | NO   | PRI | NULL    |       |
      | size    | bigint(20) unsigned | NO   |     | NULL    |       |
      | re      | tinyint(3) unsigned | NO   |     | NULL    |       |
      | unavail | bigint(20) unsigned | YES  |     | NULL    |       |
      +---------+---------------------+------+-----+---------+-------+
      4 rows in set (0.01 sec)
      > select count(*) from disk;
      ERROR 2006 (HY000): MySQL server has gone away
      No connection. Trying to reconnect...
      Connection id:    4
      Current database: bdr
       
      ERROR 2013 (HY000): Lost connection to MySQL server during query
      

      % cat /var/log/mysql/mysqld.err
      ..[snip]..
      2021-09-19 13:25:28 0 [Note] /usr/local/libexec/mariadbd: ready for connections.
      Version: '10.5.12-MariaDB-log'  socket: '/var/run/mysql/mysql.sock'  port: 3306  FreeBSD Ports
      2021-09-19 13:25:28 0 [Note] InnoDB: Buffer pool(s) load completed at 210919 13:25:28
      2021-09-19 13:25:32 0x81f27bf00  InnoDB: Assertion failure in file /wrkdirs/usr/ports/databases/mariadb105-server/work/mariadb-10.5.12/storage/innobase/btr/btr0pcur.cc line 520
      InnoDB: Failing assertion: page_is_comp(next_page) == page_is_comp(page)
      InnoDB: We intentionally generate a memory trap.
      InnoDB: Submit a detailed bug report to https://jira.mariadb.org/
      InnoDB: If you get repeated assertion failures or crashes, even
      InnoDB: immediately after the mysqld startup, there may be
      InnoDB: corruption in the InnoDB tablespace. Please refer to
      InnoDB: https://mariadb.com/kb/en/library/innodb-recovery-modes/
      InnoDB: about forcing recovery.
      210919 13:25:32 [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: 10.5.12-MariaDB-log
      key_buffer_size=134217728
      read_buffer_size=131072
      max_used_connections=1
      max_threads=153
      thread_count=2
      It is possible that mysqld could use up to 
      key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 467792 K  bytes of memory
      Hope that's ok; if not, decrease some variables in the equation.
       
      Thread pointer: 0x81fc0fb98
      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 = 0x7fffded02f38 thread_stack 0x49000
      0x130cd6c <my_print_stacktrace+0x3c> at /usr/local/libexec/mariadbd
      0xc6e6af <handle_fatal_signal+0x28f> at /usr/local/libexec/mariadbd
      0x801904e00 <_pthread_sigmask+0x530> at /lib/libthr.so.3
       
      Trying to get some variables.
      Some pointers may be invalid and cause the dump to abort.
      Query (0x81fc64d30): select count(*) from disk
       
      Connection ID (thread ID): 4
      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.
      Core pattern: %N.core
      2021-09-19 13:25:33 0 [Note] InnoDB: Uses event mutexes
      2021-09-19 13:25:33 0 [Note] InnoDB: Compressed tables use zlib 1.2.11
      2021-09-19 13:25:33 0 [Note] InnoDB: Number of pools: 1
      2021-09-19 13:25:33 0 [Note] InnoDB: Using generic crc32 instructions
      2021-09-19 13:25:33 0 [Note] InnoDB: Initializing buffer pool, total size = 134217728, chunk size = 134217728
      2021-09-19 13:25:33 0 [Note] InnoDB: Completed initialization of buffer pool
      2021-09-19 13:25:33 0 [Note] InnoDB: Starting crash recovery from checkpoint LSN=17580653,17580653
      2021-09-19 13:25:33 0 [Note] InnoDB: Last binlog file '/var/db/mysql/log/mysql-bin.000011', position 171168
      2021-09-19 13:25:33 0 [Note] InnoDB: 128 rollback segments are active.
      2021-09-19 13:25:33 0 [Note] InnoDB: Removed temporary tablespace data file: "ibtmp1"
      2021-09-19 13:25:33 0 [Note] InnoDB: Creating shared tablespace for temporary tables
      2021-09-19 13:25:33 0 [Note] InnoDB: Setting file './ibtmp1' size to 12 MB. Physically writing the file full; Please wait ...
      2021-09-19 13:25:33 0 [Note] InnoDB: File './ibtmp1' size is now 12 MB.
      2021-09-19 13:25:33 0 [Note] InnoDB: 10.5.12 started; log sequence number 17580737; transaction id 23194
      2021-09-19 13:25:33 0 [Note] InnoDB: Loading buffer pool(s) from /var/db/mysql/ib_buffer_pool
      2021-09-19 13:25:33 0 [Note] Plugin 'FEEDBACK' is disabled.
      2021-09-19 13:25:33 0 [Note] Recovering after a crash using /var/db/mysql/log/mysql-bin
      2021-09-19 13:25:33 0 [Note] Starting crash recovery...
      2021-09-19 13:25:33 0 [Note] Crash recovery finished.
      2021-09-19 13:25:33 0 [Note] Server socket created on IP: '0.0.0.0'.
      2021-09-19 13:25:33 0 [Note] Reading of all Master_info entries succeeded
      2021-09-19 13:25:33 0 [Note] Added new Master_info '' to hash table
      2021-09-19 13:25:33 0 [Note] /usr/local/libexec/mariadbd: ready for connections.
      Version: '10.5.12-MariaDB-log'  socket: '/var/run/mysql/mysql.sock'  port: 3306  FreeBSD Ports
      2021-09-19 13:25:33 0 [Note] InnoDB: Buffer pool(s) load completed at 210919 13:25:33
      

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              Assignee:
              marko Marko Mäkelä
              Reporter:
              ish Masachika ISHIZUKA
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