Kernel dump with 2.6.30 , 2.6.30.1, 2.6.30.2, 2.6.30.3

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Dump On copy file from NFS Mount to local disk.

CacheFiles: Error: Unexpected object collision
xobject: OBJ7
xobjstate=OBJECT_ACTIVE
xobjflags=0
xobjevent=4 [fffffffffffffffb]
xops=0 inp=0 exc=0
xcookie=ffff8802048c53d8 [pr=ffff8802048c5108 nd=ffff880204153bf8 fl=8]
xparent=ffff8802080431c0
object: OBJ1ef
cookie=ffff880086189618 [pr=ffff8802048c5108 nd=ffff880196371428 fl=7]
parent=ffff8802080431c0
------------[ cut here ]------------
kernel BUG at fs/cachefiles/namei.c:105!
invalid opcode: 0000 [#1] SMP
last sysfs file: /sys/devices/system/cpu/cpu3/cache/index2/shared_cpu_map
CPU 2
Modules linked in: nfs fuse nfsd lockd nfs_acl auth_rpcgss exportfs deflate
zlib_deflate ctr crypto_null ccm serpent blowfish twofish twofish_common ecb
xcbc cbc md5 sha256_generic sha512_generic des_generic aes_x86_64
aes_generic ipcomp6 ipcomp xfrm_ipcomp ah6 ah4 esp6 esp4 xfrm4_tunnel
tunnel4 xfrm4_mode_tunnel xfrm4_mode_transport xfrm6_mode_transport
xfrm6_mode_beet xfrm6_mode_tunnel xfrm6_tunnel tunnel6 af_key autofs4 hidp
rfcomm l2cap bluetooth sunrpc cachefiles fscache bonding ib_iser rdma_cm
ib_cm iw_cm ib_sa ib_mad ib_core ib_addr ipv6 iscsi_tcp libiscsi_tcp
libiscsi scsi_transport_iscsi dm_mirror dm_region_hash dm_log dm_multipath
scsi_dh dm_mod video output sbs sbshc battery acpi_memhotplug ac parport_pc
lp parport sg e1000e button rtc_cmos shpchp rtc_core rtc_lib serio_raw
floppy i2c_i801 i2c_core i3000_edac edac_core pcspkr usb_storage ata_piix
libata sd_mod scsi_mod ext3 jbd uhci_hcd ohci_hcd ehci_hcd [last unloaded:
freq_table]
Pid: 5343, comm: kslowd Not tainted 2.6.30.3 #2 PDSML
RIP: 0010:[<ffffffffa0346acc>]  [<ffffffffa0346acc>]
cachefiles_walk_to_object+0x579/0x71e [cachefiles]
RSP: 0018:ffff8800e7941df0  EFLAGS: 00010286
RAX: 000000000000001b RBX: ffff880208043cc8 RCX: 0000000000007fec
RDX: ffff88002807b000 RSI: 0000000000000046 RDI: ffffffff8083b474
RBP: ffff880208043bc0 R08: ffff8802115a4000 R09: 0000000000000000
R10: ffffffff8085b5aa R11: 0000012100000005 R12: ffff8800e79e40c0
R13: ffff8802115a4000 R14: ffff88020652c080 R15: ffff88020652c2c0
FS:  0000000000000000(0000) GS:ffff88002807b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
CR2: 00007f2005726e2d CR3: 000000020bcef000 CR4: 00000000000006e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process kslowd (pid: 5343, threadinfo ffff8800e7940000, task
ffff88020ac8c990)
Stack:
 00000000000003e7 ffff8800da503c00 ffff880146e29a84 00000021000106c0
 0000000000000000 ffff88014256da40 ffff8800e79e40c0 ffff88020ccd44e0
 ffff8802080431c0 ffffffff807f4160 0000000000000000 ffffffffa03457c8
Call Trace:
 [<ffffffffa03457c8>] ? cachefiles_lookup_object+0x76/0xc6 [cachefiles]
 [<ffffffffa0330165>] ? fscache_lookup_object+0x110/0x122 [fscache]
 [<ffffffffa03308e8>] ? fscache_object_slow_work_execute+0x5b5/0x6e1
[fscache]
 [<ffffffff80279056>] ? slow_work_thread+0x285/0x43a
 [<ffffffff8024a4fe>] ? autoremove_wake_function+0x0/0x2e
 [<ffffffff80278dd1>] ? slow_work_thread+0x0/0x43a
 [<ffffffff8024a3cf>] ? kthread+0x54/0x81
 [<ffffffff8020c93a>] ? child_rip+0xa/0x20
 [<ffffffff8024a37b>] ? kthread+0x0/0x81
 [<ffffffff8020c930>] ? child_rip+0x0/0x20
Code: c7 10 9b 34 a0 31 c0 48 8b 4e 28 48 8b 56 20 4c 8b 46 40 e8 d3 2c ef
df 49 8b 74 24 70 48 c7 c7 33 9b 34 a0 31 c0 e8 c0 2c ef df <0f> 0b eb fe f0
ff 42 f0 f0 41 81 85 18 01 00 00 00 00 00 01 f6
RIP  [<ffffffffa0346acc>] cachefiles_walk_to_object+0x579/0x71e [cachefiles]
 RSP <ffff8800e7941df0>
---[ end trace 395137a7f280a8b6 ]---
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