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  1. Lustre
  2. LU-13121

ll_update_lsm_md() may deadlock

Details

    • Bug
    • Resolution: Fixed
    • Minor
    • Lustre 2.14.0, Lustre 2.12.4
    • Lustre 2.12.0, Lustre 2.13.0
    • None
    • 3
    • 9223372036854775807

    Description

      ll_update_lsm_md() down_write() if lli->lli_lsm_md is NULL, and tries to initialize it, but if a concurrent lookup initialized lli->lli_lsm_md after this check and before taking write lock, it will up_read(), so the write lock is not released, therefore subsequent lookup will deadlock on this.

      Attachments

        Issue Links

          is related to

          Bug - A problem which impairs or prevents the functions of the product. LU-13099 ll_set_inode()) Can not initialize inode warning

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Resolved

          Activity

            [LU-13121] ll_update_lsm_md() may deadlock
            wshilong Wang Shilong (Inactive) made changes -
            Link New: This issue is related to DDN-1041 [ DDN-1041 ]
            pjones Peter Jones made changes -
            Link Original: This issue is related to JFC-17 [ JFC-17 ]
            pjones Peter Jones made changes -
            Link Original: This issue is related to JFC-27 [ JFC-27 ]
            pjones Peter Jones made changes -
            Link New: This issue is related to JFC-20 [ JFC-20 ]
            pjones Peter Jones made changes -
            Labels Original: LTS12
            pjones Peter Jones made changes -
            Fix Version/s New: Lustre 2.12.4 [ 14690 ]
            gerrit Gerrit Updater added a comment -

            Oleg Drokin (green@whamcloud.com) merged in patch https://review.whamcloud.com/37325/
            Subject: LU-13121 llite: fix deadlock in ll_update_lsm_md()
            Project: fs/lustre-release
            Branch: b2_12
            Current Patch Set:
            Commit: ed1391adec4a10075a72b21c506293c6cf9ece95

            gerrit Gerrit Updater added a comment - Oleg Drokin (green@whamcloud.com) merged in patch https://review.whamcloud.com/37325/ Subject: LU-13121 llite: fix deadlock in ll_update_lsm_md() Project: fs/lustre-release Branch: b2_12 Current Patch Set: Commit: ed1391adec4a10075a72b21c506293c6cf9ece95
            gerrit Gerrit Updater added a comment -

            Lai Siyao (lai.siyao@whamcloud.com) uploaded a new patch: https://review.whamcloud.com/37325
            Subject: LU-13121 llite: fix deadlock in ll_update_lsm_md()
            Project: fs/lustre-release
            Branch: b2_12
            Current Patch Set: 1
            Commit: e6b51d19800a73e709b6e9966c60303c9edcd8f7

            gerrit Gerrit Updater added a comment - Lai Siyao (lai.siyao@whamcloud.com) uploaded a new patch: https://review.whamcloud.com/37325 Subject: LU-13121 llite: fix deadlock in ll_update_lsm_md() Project: fs/lustre-release Branch: b2_12 Current Patch Set: 1 Commit: e6b51d19800a73e709b6e9966c60303c9edcd8f7
            pjones Peter Jones made changes -
            Fix Version/s New: Lustre 2.14.0 [ 14490 ]
            Resolution New: Fixed [ 1 ]
            Status Original: Open [ 1 ] New: Resolved [ 5 ]
            pjones Peter Jones added a comment -

            Landed for 2.14

            pjones Peter Jones added a comment - Landed for 2.14

            People

              laisiyao Lai Siyao
              laisiyao Lai Siyao
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              Dates

                Created:
                Updated:
                Resolved: