[LU-9563] LBUG ldlm_lock_downgrade()) ASSERTION( lock->l_granted_mode & (LCK_PW | LCK_EX) ) failed:

• Type: Bug
• Resolution: Cannot Reproduce
• Priority: Blocker
• Affects Version/s: Lustre 2.10.0
• Labels: soak
• Environment: soak performance cluster
• Severity: 3
• Assignee: Lai Siyao
• Reporter: Cliff White (Inactive)

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

Issue Links

• duplicates: LU-9504 LBUG ptlrpc_handle_rs()) ASSERTION( lock != ((void *)0) ) failed