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  1. Lustre
  2. LU-19909

sanity test_181 12MDT: mdc_enqueue_base() unable to handle kernel NULL pointer dereference at 0000000000000254

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    • Icon: Bug Bug
    • Resolution: Unresolved
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    • 9223372036854775807

      This issue was created by maloo for Andreas Dilger <adilger@dilger.ca>

      This issue relates to the following test suite run:
      https://testing.whamcloud.com/test_sets/b83930d7-cb82-40a7-8ba5-70a32f7cd9b4

      When running a custom session running with "Test-Parameters: mdscount=3 mdtcount=12" for patch https://review.whamcloud.com/56384 ("LU-14058 tests: clean up sanity.sh MDT name generation") test_181 crashed with the following stack trace. The "254" value is consistent across multiple test runs, so it appears to be a struct offset with a NULL pointer:

      trevis-154vm94 crashed during sanity test_181
      Lustre: DEBUG MARKER: == sanity test 181: Test open-unlinked dir ======= 13:01:33 (1771506093)
      [11416.005411] BUG: unable to handle kernel NULL pointer dereference at 0000000000000254
      [11416.007192] Oops: 0000 [#1] SMP NOPTI
      [11416.007766] CPU: 0 PID: 1038780 Comm: lfs 4.18.0-553.89.1.el8_10.x86_64 #1
      [11416.009458] Hardware name: Red Hat KVM/RHEL, BIOS 1.16.3-4.el9 04/01/2014
      [11416.010459] RIP: 0010:mdc_enqueue_base+0x930/0x1bc0 [mdc]
      [11416.023665] Call Trace:
      [11416.029329]  mdc_intent_lock+0x27a/0x5d0 [mdc]
      [11416.032687]  lmv_intent_lookup+0x26c/0x9e0 [lmv]
      [11416.035079]  lmv_intent_lock+0x329/0x3a0 [lmv]
      [11416.036494]  ll_intent_lock+0xab/0x770 [lustre]
      [11416.038047]  ll_inode_revalidate.constprop.71+0x291/0x670 [lustre]
      [11416.039009]  ll_getattr_dentry+0x4ce/0x1090 [lustre]
      [11416.041904]  vfs_statx+0x8a/0xe0
      [11416.042427]  __do_sys_statx+0x3b/0x80
      [11416.043040]  do_syscall_64+0x5b/0x1d0
      

      Test session details:
      clients: https://build.whamcloud.com/job/lustre-reviews/121801 - 4.18.0-553.89.1.el8_10.x86_64
      servers: https://build.whamcloud.com/job/lustre-reviews/121801 - 4.18.0-553.89.1.el8_lustre.x86_64

      <<Please provide additional information about the failure here>>

      VVVVVVV DO NOT REMOVE LINES BELOW, Added by Maloo for auto-association VVVVVVV
      sanity test_181 - trevis-154vm94 crashed during sanity test_181

            wc-triage WC Triage
            maloo Maloo
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              Created:
              Updated: