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  1. Lustre
  2. LU-9563

LBUG ldlm_lock_downgrade()) ASSERTION( lock->l_granted_mode & (LCK_PW | LCK_EX) ) failed:

    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Blocker
    • Resolution: Cannot Reproduce
    • Affects Version/s: Lustre 2.10.0
    • Fix Version/s: None
    • Labels:
    • Environment:
      soak performance cluster
    • Severity:
      3
    • Rank (Obsolete):
      9223372036854775807

      Description

      System was running normally, no fault was induced.

      [25789.588202] LustreError: 4166:0:(ldlm_lock.c:2548:ldlm_lock_downgrade()) ASSERTION( lock->l_granted_mode & (LCK_PW | LCK_EX) ) failed: ^M
      [25789.609363] LustreError: 4166:0:(ldlm_lock.c:2548:ldlm_lock_downgrade()) LBUG^M
      [25789.621115] Pid: 4166, comm: ptlrpc_hr01_005^M
      [25789.629112] ^M
      [25789.629112] Call Trace:^M
      [25789.639919]  [<ffffffffa084d7ee>] libcfs_call_trace+0x4e/0x60 [libcfs]^M
      [25789.650059]  [<ffffffffa084d87c>] lbug_with_loc+0x4c/0xb0 [libcfs]^M
      [25789.659583]  [<ffffffffa0b5883b>] ldlm_lock_downgrade+0x19b/0x1d0 [ptlrpc]^M
      [25789.669915]  [<ffffffffa0bae96f>] ptlrpc_hr_main+0x5bf/0x910 [ptlrpc]^M
      [25789.679492]  [<ffffffff810c8345>] ? sched_clock_cpu+0x85/0xc0^M
      [25789.688107]  [<ffffffff810c54c0>] ? default_wake_function+0x0/0x20^M
      [25789.697330]  [<ffffffffa0bae3b0>] ? ptlrpc_hr_main+0x0/0x910 [ptlrpc]^M
      [25789.706522]  [<ffffffff810b0a4f>] kthread+0xcf/0xe0^M
      [25789.714056]  [<ffffffff810b0980>] ? kthread+0x0/0xe0^M
      [25789.721469]  [<ffffffff81697318>] ret_from_fork+0x58/0x90^M
      [25789.729355]  [<ffffffff810b0980>] ? kthread+0x0/0xe0^M
      [25789.736613] ^M
      [25789.740048] Kernel panic - not syncing: LBUG^M
      

      System wedged hard at this time. Will reboot and run with full debug

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              • Assignee:
                laisiyao Lai Siyao
                Reporter:
                cliffw Cliff White (Inactive)
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                Dates

                • Created:
                  Updated:
                  Resolved: