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  1. Lustre
  2. LU-8715

Regression from LU-8057 causes loading of fld.ko hung in 2.7.2

Details

    • Bug
    • Resolution: Cannot Reproduce
    • Critical
    • None
    • Lustre 2.7.0
    • None
    • lustre server nas-2.7.2-3nasS running in centos 6.7.
    • 3
    • 9223372036854775807

    Description

      Since our nas-2.7.2-2nas rebased to b2_7_fe to nas-2.7.2-3nas, we found loading lustre module fld.ko hanged. Modprobe took 100% cpu time and could not be killed.

      I identified the culprit of the problem using git bisect:
      commit f23e22da88f07e95071ec76807aaa42ecd39e8ca
      Author: Amitoj Kaur Chawla <amitoj1606@gmail.com>
      Date: Thu Jun 16 23:12:03 2016 +0800

      LU-8057 ko2iblnd: Replace sg++ with sg = sg_next(sg)

      It was a b2_7_fe back port from the following one:
      Lustre-commit: d226464acaacccd240da43dcc22372fbf8cb04a6
      Lustre-change: http://review.whamcloud.com/19342

      Attachments

        Issue Links

          is related to

          Bug - A problem which impairs or prevents the functions of the product. LU-8057 o2iblnd driver is causing memory corruption due to improper handling of scatter list.

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

          Activity

            [LU-8715] Regression from LU-8057 causes loading of fld.ko hung in 2.7.2
            pjones Peter Jones made changes -
            Resolution New: Cannot Reproduce [ 5 ]
            Status Original: Open [ 1 ] New: Resolved [ 5 ]
            pjones Peter Jones made changes -
            Labels Original: nasa
            doug Doug Oucharek (Inactive) made changes -
            Assignee Original: Doug Oucharek [ doug ] New: Amir Shehata [ ashehata ]
            pjones Peter Jones made changes -
            Link Original: This issue is related to JFC-21 [ JFC-21 ]
            pjones Peter Jones made changes -
            Link New: This issue is related to JFC-21 [ JFC-21 ]
            jgmitter Joseph Gmitter (Inactive) made changes -
            Assignee Original: WC Triage [ wc-triage ] New: Doug Oucharek [ doug ]
            adilger Andreas Dilger made changes -
            Link New: This issue is related to LU-8057 [ LU-8057 ]
            jaylan Jay Lan (Inactive) created issue -

            People

              ashehata Amir Shehata (Inactive)
              jaylan Jay Lan (Inactive)
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              Dates

                Created:
                Updated:
                Resolved: