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  1. MariaDB Server
  2. MDEV-30459

XID_cache_element can be modified after deletion

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Details

    • Bug
    • Status: Open (View Workflow)
    • Major
    • Resolution: Unresolved
    • 10.3(EOL), 10.4(EOL), 10.5, 10.6, 10.7(EOL), 10.8(EOL), 10.9(EOL), 10.10(EOL), 10.11
    • 11.1(EOL)
    • Replication
    • None

    Description

      523f9ae7442 from MDEV-30423 reveals the possibility for leaks in XID_cache_element which allows for modification after deletion.

      Suggested fix from Andrei is:

       xid_cache_delete may do extra marking at least for DBUG builds, that is in XID_cache_element::m_state and all its access  methods would assert that not_deleted status.

      Though we only want to apply this to the newest version release, "unofficial" testing with the patch should be done in previous versions just in case.

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          split from

          Bug - A problem which impairs or prevents the functions of the product. MDEV-30423 Deadlock on Replica during BACKUP STAGE BLOCK_COMMIT on XA transactions

          • Blocker - Blocks development and/or testing work, production could not run.
          • Closed

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              bnestere Brandon Nesterenko
              bnestere Brandon Nesterenko
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              Dates

                Created:
                Updated:

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