[LU-5697] ll_statahead_interpret()) ASSERTION( entry != ((void *)0) )

• Type: Bug
• Resolution: Won't Fix
• Priority: Blocker
• Affects Version/s: Lustre 2.7.0
• Labels: soak
• Severity: 3
• Assignee: WC Triage
• Reporter: Johann Lombardi (Inactive)

Description

LBUG hit during soak testing on a lola client while IOR & compilebench were running:

<4>Lustre: soaked-OST003b-osc-ffff88102fe96400: Connection to soaked-OST003b (at 192.168.1.105@o2ib10) was lost; in progress operations using 
this service will wait for recovery to complete
<6>Lustre: soaked-OST003b-osc-ffff88102fe96400: Connection restored to soaked-OST003b (at 192.168.1.105@o2ib10)
<0>LustreError: 3649:0:(statahead.c:734:ll_statahead_interpret()) ASSERTION( entry != ((void *)0) ) failed: 
<0>LustreError: 3649:0:(statahead.c:734:ll_statahead_interpret()) LBUG
<4>Pid: 3649, comm: ptlrpcd_23
<4>
<4>Call Trace:
<4> [<ffffffffa0696895>] libcfs_debug_dumpstack+0x55/0x80 [libcfs]
<4> [<ffffffffa0696e97>] lbug_with_loc+0x47/0xb0 [libcfs]
<4> [<ffffffffa0e1ff67>] ll_statahead_interpret+0x3d7/0x440 [lustre]
<4> [<ffffffffa0d14a5a>] mdc_intent_getattr_async_interpret+0x20a/0x550 [mdc]
<4> [<ffffffffa0a2c893>] ptlrpc_check_set+0x343/0x1d20 [ptlrpc]
<4> [<ffffffff81084a1b>] ? try_to_del_timer_sync+0x7b/0xe0
<4> [<ffffffffa0a59a83>] ptlrpcd_check+0x533/0x550 [ptlrpc]
<4> [<ffffffffa0a5a0cb>] ptlrpcd+0x33b/0x3f0 [ptlrpc]
<4> [<ffffffff81061d00>] ? default_wake_function+0x0/0x20
<4> [<ffffffffa0a59d90>] ? ptlrpcd+0x0/0x3f0 [ptlrpc]
<4> [<ffffffff8109abf6>] kthread+0x96/0xa0
<4> [<ffffffff8100c20a>] child_rip+0xa/0x20
<4> [<ffffffff8109ab60>] ? kthread+0x0/0xa0
<4> [<ffffffff8100c200>] ? child_rip+0x0/0x20

A crash dump is available on lola-26, under /var/crash/127.0.0.1-2014-10-01-12:24:42.