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  1. MariaDB Server
  2. MDEV-23473

Query_log_event::pack_info does not check flags2_inited

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    Details

    • Type: Bug
    • Status: Closed (View Workflow)
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 10.5
    • Fix Version/s: 10.5.7
    • Component/s: Replication
    • Labels:
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      Description

      Recent MDEV-19964 patch did not check flags2_inited before
      to access flags2 itself.
      The latter may be randomly non-zero (see Query_log_event constructor) which
      eventulizes on rpl.rpl_mariadb_slave_capability with the following mismatch pattern:

      -slave-relay-bin.000005	#	Query	#	#	BEGIN
      +slave-relay-bin.000005	#	Query	#	#	set foreign_key_checks=1, check_constraint_checks=1; BEGIN
      

      where the '+' extra is cause by the random flags2.

      The case should be fixed with following the pattern of first checking flags2_inited.

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            Assignee:
            Elkin Andrei Elkin
            Reporter:
            Elkin Andrei Elkin
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              Updated:
              Resolved: