nfsd oops

I had the following oops on a machine that is an NFS server to diskless clients.

The machine is running a rather old kernel - 2.4.18 with XFS v1.1 - upgrading the kernel will not be a problem, although I would appreciate if anyone knows if this a known problem (and fixed in a later kernel)
...

Thanks

James Pearson

Aug  5 04:30:58 mpcboot-b kernel: Unable to handle kernel NULL pointer
dereference at virtual address 00000000
Aug  5 04:30:58 mpcboot-b kernel: 00000000
Aug  5 04:30:58 mpcboot-b kernel: *pde = 00000000
Aug  5 04:30:58 mpcboot-b kernel: Oops: 0000
Aug  5 04:30:58 mpcboot-b kernel: CPU:    0
Aug  5 04:30:58 mpcboot-b kernel: EIP:    0010:[<00000000>]    Not
tainted
Using defaults from ksymoops -t elf32-i386 -a i386
Aug  5 04:30:58 mpcboot-b kernel: EFLAGS: 00010282
Aug  5 04:30:58 mpcboot-b kernel: eax: 00000000   ebx: c209ad40   ecx:
00000000   edx: c0361360
Aug  5 04:30:58 mpcboot-b kernel: esi: c209ab40   edi: c209ad40   ebp:
c209ad40   esp: c6de5e80
Aug  5 04:30:58 mpcboot-b kernel: ds: 0018   es: 0018   ss: 0018
Aug  5 04:30:58 mpcboot-b kernel: Process nfsd (pid: 879,
stackpage=c6de5000)
Aug  5 04:30:58 mpcboot-b kernel: Stack: c88c3054 c7e3a960 c209ab40
c6cc6c00 c7e87800 c88c34c9 c209ad40 c6cc6c00 
Aug  5 04:30:58 mpcboot-b kernel:        00000005 c6b78800 46000000
c6f430c0 c7e87a10 00000005 c88c37f2 c7e87800 
Aug  5 04:30:58 mpcboot-b kernel:        c6cc6c10 00000005 00000001
00000000 00000007 c6cc6a00 c3838850 c6cc6c00 
Aug  5 04:30:58 mpcboot-b kernel: Call Trace: [<c88c3054>] [<c88c34c9>]
[<c88c37f2>] [<c023ff2c>] [<c88c4242>] 
Aug  5 04:30:58 mpcboot-b kernel:    [<c88c8c1d>] [<c88c1dc1>]
[<c88d1020>] [<c88c15d3>] [<c88d1020>] [<c8890f89>] 
Aug  5 04:30:58 mpcboot-b kernel:    [<c88d1440>] [<c88d0ee8>]
[<c88c1349>] [<c88d0ee0>] [<c01057db>] 
Aug  5 04:30:58 mpcboot-b kernel: Code:  Bad EIP value.

Trace; c88c3054 <[nfsd]nfsd_findparent+34/fc> Trace; c88c34c9 <[nfsd]find_fh_dentry+201/324> Trace; c88c37f2 <[nfsd]fh_verify+206/3e4> Trace; c023ff2c <skb_checksum+4c/2f8>
Trace; c88c4242 <[nfsd]nfsd_lookup+72/3e8> Trace; c88c8c1d <[nfsd]nfssvc_decode_diropargs+5d/c4> Trace; c88c1dc1 <[nfsd]nfsd_proc_lookup+8d/a0> Trace; c88d1020 <[nfsd]nfsd_procedures2+80/240> Trace; c88c15d3 <[nfsd]nfsd_dispatch+d3/19a> Trace; c88d1020 <[nfsd]nfsd_procedures2+80/240> Trace; c8890f89 <[sunrpc]svc_process+28d/51c> Trace; c88d1440 <[nfsd]nfsd_svcstats+0/20> Trace; c88d0ee8 <[nfsd]nfsd_version2+0/10> Trace; c88c1349 <[nfsd]nfsd+1b9/370>
Trace; c88d0ee0 <[nfsd]nfsd_list+0/0>
Trace; c01057db <kernel_thread+23/1a4>

Aug  5 10:29:20 mpcboot-b kernel: cpu: 0, clocks: 1002270, slice: 501135
Aug  5 10:29:20 mpcboot-b kernel: SGI XFS with quota, no debug enabled

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