[LU-2966] osc_extent_make_ready()) ASSERTION( last->oap_brw_page.count > 0 ) failed

• Type: Bug
• Resolution: Cannot Reproduce
• Priority: Critical
• Severity: 3
• Assignee: Jinshan Xiong (Inactive)
• Reporter: Oleg Drokin

Description

Racer failed overnight with this issue for me on latest master:

[62785.415189] LustreError: 16652:0:(osc_cache.c:1078:osc_extent_make_ready()) ASSERTION( last->oap_brw_page.count > 0 ) failed: 
[62785.415696] LustreError: 16652:0:(osc_cache.c:1078:osc_extent_make_ready()) LBUG
[62785.424263] Pid: 16652, comm: ptlrpcd_6
[62785.424483] 
[62785.424483] Call Trace:
[62785.424860]  [<ffffffffa0796915>] libcfs_debug_dumpstack+0x55/0x80 [libcfs]
[62785.425160]  [<ffffffffa0796f17>] lbug_with_loc+0x47/0xb0 [libcfs]
[62785.425422]  [<ffffffffa09b2971>] osc_extent_make_ready+0x8f1/0xc90 [osc]
[62785.425688]  [<ffffffffa07a7401>] ? libcfs_debug_msg+0x41/0x50 [libcfs]
[62785.425950]  [<ffffffffa09b5ba3>] osc_io_unplug0+0xc73/0x12c0 [osc]
[62785.426303]  [<ffffffffa09b7461>] osc_io_unplug+0x11/0x20 [osc]
[62785.426553]  [<ffffffffa0998917>] brw_interpret+0x867/0x1110 [osc]
[62785.426834]  [<ffffffffa085a7f8>] ? ptlrpc_unregister_bulk+0xa8/0xac0 [ptlrpc]
[62785.427271]  [<ffffffffa08535a2>] ptlrpc_check_set+0x2b2/0x1da0 [ptlrpc]
[62785.427550]  [<ffffffffa0884e8b>] ptlrpcd_check+0x55b/0x590 [ptlrpc]
[62785.427822]  [<ffffffffa08853d3>] ptlrpcd+0x233/0x390 [ptlrpc]
[62785.428075]  [<ffffffff81057d60>] ? default_wake_function+0x0/0x20
[62785.428353]  [<ffffffffa08851a0>] ? ptlrpcd+0x0/0x390 [ptlrpc]
[62785.428603]  [<ffffffff8100c14a>] child_rip+0xa/0x20
[62785.428849]  [<ffffffffa08851a0>] ? ptlrpcd+0x0/0x390 [ptlrpc]
[62785.436308]  [<ffffffffa08851a0>] ? ptlrpcd+0x0/0x390 [ptlrpc]
[62785.489846] Kernel panic - not syncing: LBUG

crashdump and modules in /exports/crashdumps/192.168.10.220-2013-03-14-07\:31\:17