Hi Steve,
looking over LK, i've found an interesting thread i'm concerned
with (NFS related Oops in 2.4.[39]-xfs).
Last weekend our main file server oopsed during the weekly run of
amanda (doing xfsdump):
embeh [09:39am] (0.12) ~> uname -a
Linux embeh.sif.it 2.4.9-xfs-1 #1 Tue Aug 28 11:18:44 CEST 2001 i686
compiled with kgcc.
That's the oops:
Oct 13 00:50:38 embeh kernel: Unable to handle kernel NULL pointer
dereference at virtual add
Oct 13 00:50:38 embeh kernel: 00000000
Oct 13 00:50:38 embeh kernel: *pde = 00000000
Oct 13 00:50:38 embeh kernel: Oops: 0000
Oct 13 00:50:38 embeh kernel: CPU: 0
Oct 13 00:50:38 embeh kernel: EIP: 0010:[agp_frontend_cleanup+0/96]
Oct 13 00:50:38 embeh kernel: EIP: 0010:[<00000000>]
Using defaults from ksymoops -t elf32-i386 -a i386
Oct 13 00:50:38 embeh kernel: EFLAGS: 00010286
Oct 13 00:50:38 embeh kernel: eax: 00000000 ebx: de666540 ecx:
de666f1c edx: c04c6700
Oct 13 00:50:38 embeh kernel: esi: de666ec0 edi: de666540 ebp:
de666540 esp: ddcfbe58
Oct 13 00:50:38 embeh kernel: ds: 0018 es: 0018 ss: 0018
Oct 13 00:50:38 embeh kernel: Process nfsd (pid: 734, stackpage=ddcfb000)
Oct 13 00:50:38 embeh kernel: Stack: c0187284 d42b8cc0 de666ec0 00000002
decf3c00 c0187696 de
666540 00000002
Oct 13 00:50:38 embeh kernel: ddd06400 ddd06804 ddd49800 00000000
decf3de8 ddd06400 c0
1879d2 decf3c00
Oct 13 00:50:38 embeh kernel: ddd06814 00000002 00000001 00000001
00000007 00000007 cc
ffad28 ddd06400
Oct 13 00:50:38 embeh kernel: Call Trace: [nfsd_findparent+52/224]
[find_fh_dentry+534/816] [
Oct 13 00:50:38 embeh kernel: Call Trace: [<c0187284>] [<c0187696>]
[<c01879d2>] [<c0188332>]
[<c010ec49>]
Oct 13 00:50:38 embeh kernel: [<c018e34e>] [<c0190130>] [<c0185863>]
[<c0329328>] [<c01856
Oct 13 00:50:38 embeh kernel: Code: Bad EIP value.
>>EIP; 00000000 Before first symbol
Trace; c0187284 <nfsd_findparent+34/e0>
Trace; c0187696 <find_fh_dentry+216/330>
Trace; c01879d2 <fh_verify+222/450>
Trace; c0188332 <nfsd_lookup+92/4c0>
Trace; c010ec49 <schedule+2d9/420>
Trace; c018e34e <nfsd3_proc_lookup+13e/150>
Trace; c0190130 <nfs3svc_decode_diropargs+a0/110>
Trace; c0185863 <nfsd_dispatch+d3/170>
Trace; c0329328 <svc_process+2a8/540>
Athlon 1.33 Ghz, LVM over RAID5, userland and kernel from CVS as of
2001-08-28, xfsdump-1.1.3-0
hope this helps,
-m
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