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  1. MariaDB Server
  2. MDEV-6532

MySQL Bug#72544 - Incorrect locking for global_query_id

Details

    • Task
    • Status: Closed (View Workflow)
    • Major
    • Resolution: Fixed
    • 10.0.13
    • None
    • None

    Description

      global_query_id is atomic variable. Though it is protected by mutex in sp_head.cc:

      mysql_mutex_lock(&LOCK_thread_count);
      		 
      q= global_query_id;
      		 
      mysql_mutex_unlock(&LOCK_thread_count);

      Attachments

        Issue Links

          is part of

          Task - A task that needs to be done. MDEV-6530 Examine and apply Power8 patches suggested by Stewart Smith

          • Major - Major loss of function.
          • Closed
          links to

          Web Link MySQL BUG#72544

          Activity

            svoj Sergey Vojtovich added a comment -

            Fixed by Monty in 10.0.13:

            revno: 4309
            		 
            revision-id: monty@mariadb.org-20140730185826-ixp284l6b2aoha2t
            		 
            parent: jplindst@mariadb.org-20140727054737-ieoohthuxc601q1a
            		 
            committer: Michael Widenius <monty@mariadb.org>
            		 
            branch nick: maria-10.0
            		 
            timestamp: Wed 2014-07-30 21:58:26 +0300
            		 
            message:
            		 
              Fixed wrong usage of global_query_id. (It's not protected by LOCK_thread_count)

            svoj Sergey Vojtovich added a comment - Fixed by Monty in 10.0.13: revno: 4309 revision-id: monty@mariadb.org-20140730185826-ixp284l6b2aoha2t parent: jplindst@mariadb.org-20140727054737-ieoohthuxc601q1a committer: Michael Widenius <monty@mariadb.org> branch nick: maria-10.0 timestamp: Wed 2014-07-30 21:58:26 +0300 message: Fixed wrong usage of global_query_id. (It's not protected by LOCK_thread_count)

            People

              monty Michael Widenius
              svoj Sergey Vojtovich
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              Dates

                Created:
                Updated:
                Resolved:

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