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Subject[OOPS] with 2.4.18-pre4+linux-2.4.18-NFS_ALL
Date
Hi Trond et al.,

I can reliably reproduce this oops on my diskless with NFS_ALL applied,
but not with plain-pre4, just by quitting one of {StarOffice,VMware}.

Unable to handle kernel NULL pointer dereference at virtual address 0000005c
c0158fbf
*pde = 00000000
Oops: 0000
CPU: 0
EIP: 0010:[nfs_update_request+447/768] Not tainted
EFLAGS: 00010246
eax: 00000000 ebx: 00000000 ecx: 00000000 edx: de25eab8
esi: de25e900 edi: 00000000 ebp: de25eab8 esp: e21d1ef0
ds: 0018 es: 0018 ss: 0018
Process soffice.bin (pid: 2030, stackpage=e21d1000)
Stack: de25e900 c17508c0 00000000 00001000 de25e9b4 de25e900 00000000
de25e900
00001000 c01588a2 00000000 de25e900 c17508c0 00000000 00001000
de25e9b4
de25e900 00000000 c17508c0 c0158a2b 00000000 de25e900 c17508c0
00000000
Call Trace: [nfs_writepage_async+34/224] [nfs_writepage+203/272]
[nfs_writepage+0/272] [filemap_fdatasync+83/144] [msync_interval+105/208]
Code: 8b 58 5c 85 db 74 1d 81 7b 18 f0 a4 4a 0f 74 14 68 b2 00 00
Using defaults from ksymoops -t elf32-i386 -a i386

Code; 00000000 Before first symbol
00000000 <_EIP>:
Code; 00000000 Before first symbol
0: 8b 58 5c mov 0x5c(%eax),%ebx
Code; 00000002 Before first symbol
3: 85 db test %ebx,%ebx
Code; 00000004 Before first symbol
5: 74 1d je 24 <_EIP+0x24> 00000024 Before first
symbol
Code; 00000006 Before first symbol
7: 81 7b 18 f0 a4 4a 0f cmpl $0xf4aa4f0,0x18(%ebx)
Code; 0000000e Before first symbol
e: 74 14 je 24 <_EIP+0x24> 00000024 Before first
symbol
Code; 00000010 Before first symbol
10: 68 b2 00 00 00 push $0xb2


1 warning and 1 error issued. Results may not be reliable.

Haven't used any funky nfs options:

CONFIG_NFS_FS=y
CONFIG_NFS_V3=y
# CONFIG_NFS_DIRECTIO is not set
CONFIG_ROOT_NFS=y
CONFIG_NFSD=m
CONFIG_NFSD_V3=y
# CONFIG_NFSD_TCP is not set
CONFIG_SUNRPC=y
CONFIG_LOCKD=y
CONFIG_LOCKD_V4=y

It is not related to the symlink fix, I reverted it, just to be sure.
After reverting NFS_ALL, oopsing went away. Any ideas other then trying
all patches one by one :-(

Cheers,
Hans-Peter
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