[BUG] 2.6.23-rc5 kernel BUG at fs/nfs/nfs4xdr.c:945

[Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>]

Sep  7 11:42:49 p55lp2 kernel: kernel BUG at fs/nfs/nfs4xdr.c:945!
Sep  7 11:42:49 p55lp2 kernel: Oops: Exception in kernel mode, sig: 5 [#1]
Sep  7 11:42:49 p55lp2 kernel: SMP NR_CPUS=128 NUMA pSeries
Sep  7 11:42:49 p55lp2 kernel: Modules linked in: nfs lockd nfs_acl 
sunrpc ipv6 loop dm_mod ibmveth sg ibmvscsic sd_mod scsi_mod
Sep  7 11:42:49 p55lp2 kernel: NIP: d000000000378044 LR: 
d000000000378034 CTR: 80000000001c5840
Sep  7 11:42:49 p55lp2 kernel: REGS: c0000000d971b050 TRAP: 0700   Not 
tainted  (2.6.23-rc5-ppc64)
Sep  7 11:42:49 p55lp2 kernel: MSR: 8000000000029032 <EE,ME,IR,DR>  CR: 
28000444  XER: 00000014
Sep  7 11:42:49 p55lp2 kernel: TASK = c000000002787740[11508] 'fsstress' 
THREAD: c0000000d9718000 CPU: 1
Sep  7 11:42:49 p55lp2 kernel: GPR00: 0000000000000001 c0000000d971b2d0 
d0000000003bd648 0000000000000037  
Sep  7 11:42:49 p55lp2 kernel: GPR04: 0000000000000000 0000000000000000 
0000000000000000 0000000000000000  
Sep  7 11:42:49 p55lp2 kernel: GPR08: 0000000000000002 c000000000616538 
c0000000ef7afb58 c000000000616540  
Sep  7 11:42:49 p55lp2 kernel: GPR12: 0000000000004000 c0000000005e4a80 
0000000000000000 00000000200b2510  
Sep  7 11:42:49 p55lp2 kernel: GPR16: 0000000020105550 00000000200b2534 
000000002008c15c 0000000000000001  
Sep  7 11:42:49 p55lp2 kernel: GPR20: 0000000000000000 0000000000000001 
fffffffffffff000 c0000000d971ba30  
Sep  7 11:42:49 p55lp2 kernel: GPR24: d00000000034f524 c0000000dc4f8054 
c0000000d971b7d0 c0000000d9d313f0  
Sep  7 11:42:49 p55lp2 kernel: GPR28: 0000000000000276 0000000022000000 
d0000000003b8d78 0000000000000000  
Sep  7 11:42:49 p55lp2 kernel: NIP [d000000000378044] 
.encode_lookup+0x6c/0xbc [nfs]
Sep  7 11:42:49 p55lp2 kernel: LR [d000000000378034] 
.encode_lookup+0x5c/0xbc [nfs]
Sep  7 11:42:49 p55lp2 kernel: Call Trace:
Sep  7 11:42:49 p55lp2 kernel: [c0000000d971b2d0] [d000000000378034] 
.encode_lookup+0x5c/0xbc [nfs] (unreliable)
Sep  7 11:42:49 p55lp2 kernel: [c0000000d971b370] [d000000000379f8c] 
.nfs4_xdr_enc_lookup+0x78/0xbc [nfs]
Sep  7 11:42:49 p55lp2 kernel: [c0000000d971b440] [d000000000314534] 
.rpcauth_wrap_req+0xe4/0x124 [sunrpc]
Sep  7 11:42:49 p55lp2 kernel: [c0000000d971b4f0] [d00000000030a790] 
.call_transmit+0x218/0x2b8 [sunrpc]
Sep  7 11:42:49 p55lp2 kernel: [c0000000d971b590] [d0000000003124d8] 
.__rpc_execute+0xd4/0x368 [sunrpc]
Sep  7 11:42:49 p55lp2 kernel: [c0000000d971b630] [d00000000030b114] 
.rpc_do_run_task+0xc8/0x104 [sunrpc]
Sep  7 11:42:49 p55lp2 kernel: [c0000000d971b6e0] [d00000000030b224] 
.rpc_call_sync+0x2c/0x64 [sunrpc]
Sep  7 11:42:49 p55lp2 kernel: [c0000000d971b760] [d00000000036ef04] 
._nfs4_proc_lookupfh+0xd4/0x124 [nfs]
Sep  7 11:42:49 p55lp2 kernel: [c0000000d971b850] [d0000000003719a0] 
._nfs4_proc_lookup+0x80/0x21c [nfs]
Sep  7 11:42:49 p55lp2 kernel: [c0000000d971b910] [d000000000371ba4] 
.nfs4_proc_lookup+0x68/0xac [nfs]
Sep  7 11:42:49 p55lp2 kernel: [c0000000d971b9c0] [d000000000354bf4] 
.nfs_lookup+0x158/0x334 [nfs]
Sep  7 11:42:49 p55lp2 kernel: [c0000000d971bbc0] [c0000000000f3a28] 
.lookup_hash+0xfc/0x140
Sep  7 11:42:49 p55lp2 kernel: [c0000000d971bc60] [c0000000000f7b28] 
.sys_renameat+0x164/0x228
Sep  7 11:42:49 p55lp2 kernel: [c0000000d971be30] [c000000000008534] 
syscall_exit+0x0/0x40
Sep  7 11:42:49 p55lp2 kernel: Instruction dump:
Sep  7 11:42:49 p55lp2 kernel: e8410028 7fa4eb78 7c7f1b79 7fb80026 
40820014 e8be83a8 e87e8350 4800c5f9  
Sep  7 11:42:49 p55lp2 kernel: e8410028 7fb80120 7c180026 54001ffe 
<0b000000> 3800000f 7b850020 387f0008
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