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  1. Lustre
  2. LU-11122

NULL pointer dereference in fld_local_lookup()

Details

    • Bug
    • Resolution: Duplicate
    • Blocker
    • None
    • None
    • lustre-2.8.2_2.chaos-1.ch6.x86_64
      4 MDTs used in DNE-1 fashion (remote dirs, no striped dirs)
      RHEL 7.5
    • 1
    • 9223372036854775807

    Description

      MDS nodes were power cycled during hardware maintenance. After they came back up, got below (some material redacted, see comments below for full console log contents):

      BUG: unable to handle kernel NULL pointer dereference at 0000000000000018
      IP: [<ffffffffc0cdc392>] fld_local_lookup+0x52/0x270 [fld]
      CPU: 17 PID: 180501 Comm: orph_cleanup_ls Kdump: loaded Tainted: P OE ------------ 3.10.0-862.3.2.1chaos.ch6.x86_64 #1
      Call Trace:
      [<ffffffffc06e8f6c>] ? dmu_tx_hold_object_impl+0x6c/0xc0 [zfs]
      [<ffffffffc109ff28>] osd_fld_lookup+0x48/0xd0 [osd_zfs]
      [<ffffffffc10a008a>] fid_is_on_ost+0xda/0x2f0 [osd_zfs]
      [<ffffffffc10a02e9>] osd_get_name_n_idx+0x49/0xd00 [osd_zfs]
      [<ffffffffc109902c>] ? osd_declare_attr_set+0x14c/0x730 [osd_zfs]
      [<ffffffffc0753b7e>] ? zap_lookup_by_dnode+0x2e/0x30 [zfs]
      [<ffffffffc1097510>] osd_declare_object_destroy+0xe0/0x3e0 [osd_zfs]
      [<ffffffffc1139ffe>] lod_sub_object_declare_destroy+0xce/0x2d0 [lod]
      [<ffffffffc1129700>] lod_declare_object_destroy+0x170/0x4a0 [lod]
      [<ffffffffc1513689>] ? orph_declare_index_delete+0x179/0x460 [mdd]
      [<ffffffffc1513f66>] orph_key_test_and_del+0x5f6/0xd30 [mdd]
      [<ffffffffc1514c57>] __mdd_orphan_cleanup+0x5b7/0x840 [mdd]
      [<ffffffffc15146a0>] ? orph_key_test_and_del+0xd30/0xd30 [mdd]
      [<ffffffffbb2c05f1>] kthread+0xd1/0xe0
      [<ffffffffbb2c0520>] ? insert_kthread_work+0x40/0x40
      [<ffffffffbb9438b7>] ret_from_fork_nospec_begin+0x21/0x21
      [<ffffffffbb2c0520>] ? insert_kthread_work+0x40/0x40

      Attachments

        Activity

          [LU-11122] NULL pointer dereference in fld_local_lookup()
          ofaaland Olaf Faaland added a comment -

          Dupe of LU-7206

          ofaaland Olaf Faaland added a comment - Dupe of LU-7206
          ofaaland Olaf Faaland added a comment -

          Dupe of LU-7206

          ofaaland Olaf Faaland added a comment - Dupe of LU-7206
          ofaaland Olaf Faaland added a comment -

          Backport reviewed and passed testing.

          ofaaland Olaf Faaland added a comment - Backport reviewed and passed testing.
          ofaaland Olaf Faaland added a comment -

          Peter, can you backport this to 2.8fe?  This way it gets some automated sanity tests run against it, which we aren't really set up to do.

          ofaaland Olaf Faaland added a comment - Peter, can you backport this to 2.8fe?  This way it gets some automated sanity tests run against it, which we aren't really set up to do.
          pjones Peter Jones added a comment -

          Is any further action needed here or can this ticket be marked as a duplicate of LU-7206?

          pjones Peter Jones added a comment - Is any further action needed here or can this ticket be marked as a duplicate of LU-7206 ?
          ofaaland Olaf Faaland added a comment -

          You're right, this was in the context of a umount.  That all seems to fit.

           

          ofaaland Olaf Faaland added a comment - You're right, this was in the context of a umount.  That all seems to fit.  
          bzzz Alex Zhuravlev added a comment -

          please check http://review.whamcloud.com/23029 

          bzzz Alex Zhuravlev added a comment - please check http://review.whamcloud.com/23029  

          People

            bzzz Alex Zhuravlev
            ofaaland Olaf Faaland
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            Dates

              Created:
              Updated:
              Resolved: