nfs server crashed

cc n intellicc2002 at yahoo.com.hk
Tue Aug 31 05:39:05 UTC 2004 

Our nfs server crashs occasionally. Any idea to solve
the problem? Thanks!


 Aug 31 10:50:49 tisnfs kernel: Unable to handle
kernel paging request at virtual address 00800004
Aug 31 10:50:49 tisnfs kernel:  printing eip:
Aug 31 10:50:49 tisnfs kernel: 02146bc4
Aug 31 10:50:49 tisnfs kernel: *pde = 00000000
Aug 31 10:50:49 tisnfs kernel: Oops: 0002 [#1]
Aug 31 10:50:49 tisnfs kernel: Modules linked in:
snd_mixer_oss snd soundcore nfsd exportfs lockd
autofs4 sunrpc e1000 e100 mii floppy sg microcode
dm_mod uhci_hcd ehci_hcd md5 ipv6 ext3 jbd ata_piix
libata sd_mod scsi_mod
Aug 31 10:50:49 tisnfs kernel: CPU:    0
Aug 31 10:50:49 tisnfs kernel: EIP:   
0060:[<02146bc4>]    Not tainted
Aug 31 10:50:49 tisnfs kernel: EFLAGS: 00010002  
(2.6.8-1.521) 
Aug 31 10:50:49 tisnfs kernel: EIP is at
free_block+0x3a/0xbb
Aug 31 10:50:49 tisnfs kernel: eax: 00800000   ebx:
3dc21000   ecx: 3dc21300   edx: 3f72e000
Aug 31 10:50:49 tisnfs kernel: esi: 414eed80   edi:
0000001b   ebp: 00000016   esp: 41e0af24
Aug 31 10:50:49 tisnfs kernel: ds: 007b   es: 007b  
ss: 0068
Aug 31 10:50:49 tisnfs kernel: Process pdflush (pid:
38, threadinfo=41e0a000 task=039eecd0)
Aug 31 10:50:49 tisnfs kernel: Stack: 414ec090
414eed80 414ec090 1712f080 41eeaae0 02146d1d 0000001b
414ec080 
Aug 31 10:50:49 tisnfs kernel:        414ec080
414ec090 1712f080 00000202 02147143 1712f144 41e0af8c
00001ce6 
Aug 31 10:50:49 tisnfs kernel:        00000030
0217e596 1712f144 0217e949 07bf4b44 00005736 02348c20
0217f079 
Aug 31 10:50:49 tisnfs kernel: Call Trace:
Aug 31 10:50:49 tisnfs kernel:  [<02146d1d>]
cache_flusharray+0xd8/0x15a
Aug 31 10:50:49 tisnfs kernel:  [<02147143>]
kmem_cache_free+0x21/0x2f
Aug 31 10:50:49 tisnfs kernel:  [<0217e596>]
destroy_inode+0x36/0x45
Aug 31 10:50:49 tisnfs kernel:  [<0217e949>]
dispose_list+0x4e/0x160
Aug 31 10:50:49 tisnfs kernel:  [<0217f079>]
prune_icache+0x366/0x3a3
Aug 31 10:50:49 tisnfs kernel:  [<0214435f>]
pdflush+0x0/0x1e
Aug 31 10:50:49 tisnfs kernel:  [<021441dd>]
__pdflush+0x349/0x4cb
Aug 31 10:50:49 tisnfs kernel:  [<02144379>]
pdflush+0x1a/0x1e
Aug 31 10:50:49 tisnfs kernel:  [<02143238>]
wb_kupdate+0x0/0xee
Aug 31 10:50:49 tisnfs kernel:  [<0214435f>]
pdflush+0x0/0x1e
Aug 31 10:50:49 tisnfs kernel:  [<02134705>]
kthread+0x69/0x91
Aug 31 10:50:49 tisnfs kernel:  [<0213469c>]
kthread+0x0/0x91
Aug 31 10:50:49 tisnfs kernel:  [<021041d9>]
kernel_thread_helper+0x5/0xb
Aug 31 10:50:49 tisnfs kernel: Code: 89 50 04 89 02 31
d2 2b 4b 0c c7 03 00 01 10 00 c7 43 04 00 
Aug 31 10:50:50 tisnfs kernel:  mm/slab.c:2725:
spin_lock(mm/slab.c:414eedc4) already locked by
mm/slab.c/2141
Aug 31 10:50:50 tisnfs kernel: Unable to handle kernel
NULL pointer dereference at virtual address 00000004
Aug 31 10:50:50 tisnfs kernel:  printing eip:
Aug 31 10:50:50 tisnfs kernel: 0217c1b4
Aug 31 10:50:50 tisnfs kernel: *pde = 00000000
Aug 31 10:50:50 tisnfs kernel: Oops: 0002 [#2]
Aug 31 10:50:50 tisnfs kernel: Modules linked in:
snd_mixer_oss snd soundcore nfsd exportfs lockd
autofs4 sunrpc e1000 e100 mii floppy sg microcode
dm_mod uhci_hcd ehci_hcd md5 ipv6 ext3 jbd ata_piix
libata sd_mod scsi_mod
Aug 31 10:50:50 tisnfs kernel: CPU:    0
Aug 31 10:50:50 tisnfs kernel: EIP:   
0060:[<0217c1b4>]    Not tainted
Aug 31 10:50:50 tisnfs kernel: EFLAGS: 00010206  
(2.6.8-1.521) 
Aug 31 10:50:50 tisnfs kernel: EIP is at
d_instantiate+0xb4/0x147
Aug 31 10:50:50 tisnfs kernel: eax: 240ea680   ebx:
33037b44   ecx: 33037b54   edx: 00000000
Aug 31 10:50:50 tisnfs kernel: esi: 240ea630   edi:
240ea630   ebp: 00000000   esp: 392c0ea8
Aug 31 10:50:50 tisnfs kernel: ds: 007b   es: 007b  
ss: 0068
Aug 31 10:50:50 tisnfs kernel: Process nfsd (pid:
1944, threadinfo=392c0000 task=392e6d50)
Aug 31 10:50:50 tisnfs kernel: Stack: 33037b44
33037b44 0217c787 00000000 33037b44 240ea630 3f53b000
00000000 
Aug 31 10:50:50 tisnfs kernel:        428a0111
210221b8 428affc0 240ea630 392c0ef8 021716ab 0ee73144
0ccad0e7 
Aug 31 10:50:50 tisnfs kernel:        8dd6dd55
36349eb8 392dc804 02171718 8dd6dd55 0ccad0b4 00000033
0ee73144 
Aug 31 10:50:50 tisnfs kernel: Call Trace:
Aug 31 10:50:50 tisnfs kernel:  [<0217c787>]
d_splice_alias+0x22e/0x23e
Aug 31 10:50:50 tisnfs kernel:  [<428a0111>]
ext3_lookup+0x70/0x89 [ext3]
Aug 31 10:50:50 tisnfs kernel:  [<021716ab>]
__lookup_hash+0x70/0x89
Aug 31 10:50:50 tisnfs kernel:  [<02171718>]
lookup_one_len+0x4d/0x5b
Aug 31 10:50:50 tisnfs kernel:  [<42a9a1c8>]
nfsd_lookup+0x4a8/0x534 [nfsd]
Aug 31 10:50:50 tisnfs kernel:  [<42aa0cc8>]
nfsd3_proc_lookup+0xa7/0xb2 [nfsd]
Aug 31 10:50:50 tisnfs kernel:  [<42aa242a>]
nfs3svc_decode_diropargs+0x0/0xb3 [nfsd]
Aug 31 10:50:50 tisnfs kernel:  [<42a97a20>]
nfsd_dispatch+0xbf/0x163 [nfsd]
Aug 31 10:50:50 tisnfs kernel:  [<42a7cba9>]
svc_process+0x323/0x562 [sunrpc]
Aug 31 10:50:50 tisnfs kernel:  [<42a97683>]
nfsd+0x3ae/0x68c [nfsd]
Aug 31 10:50:50 tisnfs kernel:  [<42a972d5>]
nfsd+0x0/0x68c [nfsd]
Aug 31 10:50:50 tisnfs kernel:  [<021041d9>]
kernel_thread_helper+0x5/0xb
Aug 31 10:50:50 tisnfs kernel: Code: 89 42 04 89 56 50
89 48 04 89 43 10 89 5e 20 81 3d 7c 8b 34 
Aug 31 10:50:50 tisnfs kernel:  lib/dec_and_lock.c:32:
spin_lock(fs/dcache.c:02348b7c) already locked by
fs/dcache.c/779
Aug 31 10:50:50 tisnfs kernel: Unable to handle kernel
NULL pointer dereference at virtual address 00000004
Aug 31 10:50:50 tisnfs kernel:  printing eip:
Aug 31 10:50:50 tisnfs kernel: 0217c1b4
Aug 31 10:50:50 tisnfs kernel: *pde = 00000000

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