[LU-2958] LBUG triggered in seq_client_alloc_fid() - ASSERTION( seq != ((void *)0) ) failed

• Type: Bug
• Resolution: Duplicate
• Priority: Blocker
• Fix Version/s: Lustre 2.4.0
• Affects Version/s: Lustre 2.4.0
• Labels: sequoia topsequoia
• Severity: 3
• Assignee: WC Triage
• Reporter: Prakash Surya (Inactive)

Description

We're continually hitting this LBUG when running 2.3.62-2chaos.

2013-03-13 10:28:27.644618 {DefaultControlEventListener} [mmcs]{8}.5.1: LustreError: 12943:0:(fid_request.c:329:seq_client_alloc_fid()) ASSERTION( seq != ((void *)0) ) failed: 
2013-03-13 10:28:27.645378 {DefaultControlEventListener} [mmcs]{8}.5.1: LustreError: 12943:0:(fid_request.c:329:seq_client_alloc_fid()) LBUG
2013-03-13 10:28:27.645734 {DefaultControlEventListener} [mmcs]{8}.5.1: Call Trace:
2013-03-13 10:28:27.646114 {DefaultControlEventListener} [mmcs]{8}.5.1: [c0000003c268b3b0] [c000000000008160] .show_stack+0x7c/0x184 (unreliable)
2013-03-13 10:28:27.646480 {DefaultControlEventListener} [mmcs]{8}.5.1: [c0000003c268b460] [8000000000420cb8] .libcfs_debug_dumpstack+0xd8/0x150 [libcfs]
2013-03-13 10:28:27.646853 {DefaultControlEventListener} [mmcs]{8}.5.1: [c0000003c268b510] [8000000000421480] .lbug_with_loc+0x50/0xc0 [libcfs]
2013-03-13 10:28:27.647213 {DefaultControlEventListener} [mmcs]{8}.5.1: [c0000003c268b5a0] [8000000001958b80] .seq_client_alloc_fid+0x4f0/0x740 [fid]
2013-03-13 10:28:27.647576 {DefaultControlEventListener} [mmcs]{8}.5.1: [c0000003c268b6c0] [8000000001a4e310] .mdc_fid_alloc+0x140/0x1e0 [mdc]
2013-03-13 10:28:27.647944 {DefaultControlEventListener} [mmcs]{8}.5.1: [c0000003c268b770] [8000000001a65818] .mdc_intent_lock+0x508/0x838 [mdc]
2013-03-13 10:28:27.648345 {DefaultControlEventListener} [mmcs]{8}.5.1: [c0000003c268b8f0] [8000000001ce72e0] .ll_lookup_it+0x450/0xfb0 [lustre]
2013-03-13 10:28:27.648774 {DefaultControlEventListener} [mmcs]{8}.5.1: [c0000003c268ba70] [8000000001ce7f10] .ll_lookup_nd+0xd0/0x580 [lustre]
2013-03-13 10:28:27.649207 {DefaultControlEventListener} [mmcs]{8}.5.1: [c0000003c268bb30] [c0000000000df10c] .__lookup_hash+0x180/0x1c8
2013-03-13 10:28:27.649699 {DefaultControlEventListener} [mmcs]{8}.5.1: [c0000003c268bbd0] [c0000000000e3690] .do_filp_open+0x260/0xadc
2013-03-13 10:28:27.650185 {DefaultControlEventListener} [mmcs]{8}.5.1: [c0000003c268bd80] [c0000000000d1ca8] .do_sys_open+0x8c/0x18c
2013-03-13 10:28:27.650632 {DefaultControlEventListener} [mmcs]{8}.5.1: [c0000003c268be30] [c000000000000580] syscall_exit+0x0/0x2c
2013-03-13 10:28:27.651100 {DefaultControlEventListener} [mmcs]{8}.5.1: Kernel panic - not syncing: LBUG
2013-03-13 10:28:27.651554 {DefaultControlEventListener} [mmcs]{8}.5.1: Call Trace:
2013-03-13 10:28:27.652039 {DefaultControlEventListener} [mmcs]{8}.5.1: [c0000003c268b3d0] [c000000000008160] .show_stack+0x7c/0x184 (unreliable)
2013-03-13 10:28:27.652453 {DefaultControlEventListener} [mmcs]{8}.5.1: [c0000003c268b480] [c0000000004557cc] .panic+0xb8/0x1e0
2013-03-13 10:28:27.652880 {DefaultControlEventListener} [mmcs]{8}.5.1: [c0000003c268b510] [80000000004214e0] .lbug_with_loc+0xb0/0xc0 [libcfs]
2013-03-13 10:28:27.653312 {DefaultControlEventListener} [mmcs]{8}.5.1: [c0000003c268b5a0] [8000000001958b80] .seq_client_alloc_fid+0x4f0/0x740 [fid]
2013-03-13 10:28:27.653734 {DefaultControlEventListener} [mmcs]{8}.5.1: [c0000003c268b6c0] [8000000001a4e310] .mdc_fid_alloc+0x140/0x1e0 [mdc]
2013-03-13 10:28:27.654166 {DefaultControlEventListener} [mmcs]{8}.5.1: [c0000003c268b770] [8000000001a65818] .mdc_intent_lock+0x508/0x838 [mdc]
2013-03-13 10:28:27.654595 {DefaultControlEventListener} [mmcs]{8}.5.1: [c0000003c268b8f0] [8000000001ce72e0] .ll_lookup_it+0x450/0xfb0 [lustre]
2013-03-13 10:28:27.655016 {DefaultControlEventListener} [mmcs]{8}.5.1: [c0000003c268ba70] [8000000001ce7f10] .ll_lookup_nd+0xd0/0x580 [lustre]
2013-03-13 10:28:27.655440 {DefaultControlEventListener} [mmcs]{8}.5.1: [c0000003c268bb30] [c0000000000df10c] .__lookup_hash+0x180/0x1c8
2013-03-13 10:28:27.655861 {DefaultControlEventListener} [mmcs]{8}.5.1: [c0000003c268bbd0] [c0000000000e3690] .do_filp_open+0x260/0xadc
2013-03-13 10:28:27.656281 {DefaultControlEventListener} [mmcs]{8}.5.1: [c0000003c268bd80] [c0000000000d1ca8] .do_sys_open+0x8c/0x18c
2013-03-13 10:28:27.656711 {DefaultControlEventListener} [mmcs]{8}.5.1: [c0000003c268be30] [c000000000000580] syscall_exit+0x0/0x2c
2013-03-13 10:28:27.657108 {DefaultControlEventListener} [mmcs]{8}.5.1: LustreError: dumping log to /tmp/lustre-log.1363195707.12943

Issue Links

• duplicates: LU-2911 After upgrading from 1.8.9 to master, hit ASSERTION( seq != ((void *)0) ) failed