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SubjectOops in nfs


Hi,

after a crash on our server I have to reboot my own system. After the
reboot I make an attemp to login on my nfs mounted home. This triggers
oops twice:

first one:
----------------------------------------------------------------------------
general protection: 0000
CPU: 0
EIP: 0010:[<00111499>]
EFLAGS: 00010286
eax: 00fefe28 ebx: c0003739 ecx: 00fefe28 edx: f000ef6f
esi: 00fefe20 edi: 00fefe24 ebp: 00b50e60 esp: 00b50e54
ds: 0018 es: 0018 fs: 002b gs: 002b ss: 0018
Process dircolors (pid: 380, process nr: 30, stackpage=00b50000)
Stack: 00000084 00fefe20 00228530 00228530 0016ea1d 00fefe28 0016e805 00fefe20
00b054ec 00b054ec 017eaec0 00228530 00b38018 00002400 01019958 00000077
001e9938 01986998 00000000 00b7c000 00000003 00b50eb8 01019b18 019869e8
Call Trace: [<0016ea1d>] [<0016e805>] [<0011c206>] [<0011c2da>] [<0016e320>] [<00121d2a>] [<0010a5c5>]
Code: 8b 02 83 f8 02 74 07 8b 02 83 f8 01 75 5f 9c 5e fa c7 02 00
Using `/System.map' to map addresses to symbols.

>>EIP: 111499 <wake_up+35/e4>
Trace: 16ea1d <nfsiod_enqueue+d/18>
Trace: 16e805 <nfs_readpage+101/268>
Trace: 11c206 <generic_file_read+40e/5b4>
Trace: 11c2da <generic_file_read+4e2/5b4>
Trace: 16e320 <nfs_file_read+a4/b0>
Trace: 121d2a <sys_read+8a/b0>
Trace: 10a5c5 <system_call+55/80>

Code: 111499 <wake_up+35/e4> movl (%edx),%eax
Code: 11149b <wake_up+37/e4> cmpl $0x2,%eax
Code: 11149e <wake_up+3a/e4> je 1114a7 <wake_up+43/e4>
Code: 1114a0 <wake_up+3c/e4> movl (%edx),%eax
Code: 1114a2 <wake_up+3e/e4> cmpl $0x1,%eax
Code: 1114a5 <wake_up+41/e4> jne 111506 <wake_up+a2/e4>
Code: 1114a7 <wake_up+43/e4> pushf
Code: 1114a8 <wake_up+44/e4> popl %esi
Code: 1114a9 <wake_up+45/e4> cli
Code: 1114aa <wake_up+46/e4> movl $0x90900000,(%edx)
Code: 1114b0 <wake_up+4c/e4> nop
----------------------------------------------------------------------------

and

----------------------------------------------------------------------------
general protection: 0000
CPU: 0
EIP: 0010:[<00111490>]
EFLAGS: 00010286
eax: 00000010 ebx: f000ef6f ecx: 00000010 edx: 0000611b
esi: 00000008 edi: 0000000c ebp: 01b47e60 esp: 01b47e54
ds: 0018 es: 0018 fs: 002b gs: 002b ss: 0018
Process xsetroot (pid: 381, process nr: 29, stackpage=01b47000)
Stack: 00000084 00000008 002540c0 002540c0 0016ea1d 00000010 0016e805 00000008
03c799d8 03c799d8 017ea540 002540c0 00b64018 00002400 01019918 00000077
001e9938 01986918 00000001 018f0000 00000005 01b47ec0 015c98d8 01986968
Call Trace: [<0016ea1d>] [<0016e805>] [<0011c206>] [<0011c2da>] [<0016e320>] [<00121d2a>] [<0010a5c5>]
Code: 8b 13 8b 5b 04 85 d2 74 6d 8b 02 83 f8 02 74 07 8b 02 83 f8
Using `/System.map' to map addresses to symbols.

>>EIP: 111490 <wake_up+2c/e4>
Trace: 16ea1d <nfsiod_enqueue+d/18>
Trace: 16e805 <nfs_readpage+101/268>
Trace: 11c206 <generic_file_read+40e/5b4>
Trace: 11c2da <generic_file_read+4e2/5b4>
Trace: 16e320 <nfs_file_read+a4/b0>
Trace: 121d2a <sys_read+8a/b0>
Trace: 10a5c5 <system_call+55/80>

Code: 111490 <wake_up+2c/e4> movl (%ebx),%edx
Code: 111492 <wake_up+2e/e4> movl 0x4(%ebx),%ebx
Code: 111495 <wake_up+31/e4> testl %edx,%edx
Code: 111497 <wake_up+33/e4> je 111506 <wake_up+a2/e4>
Code: 111499 <wake_up+35/e4> movl (%edx),%eax
Code: 11149b <wake_up+37/e4> cmpl $0x2,%eax
Code: 11149e <wake_up+3a/e4> je 1114a7 <wake_up+43/e4>
Code: 1114a0 <wake_up+3c/e4> movl (%edx),%eax
Code: 1114a2 <wake_up+3e/e4> cmpl $0x0,%eax
Code: 1114a5 <wake_up+41/e4> nop
Code: 1114a6 <wake_up+42/e4> nop
Code: 1114a7 <wake_up+43/e4> nop
----------------------------------------------------------------------------


Note: I've seen such oops not only on this patched 2.0.29 but also
on a stock 2.0.28. I'm got this behaviour after booting
in single user mode, cleaning up the system, and calling the
correct runlevel for using network and xdm. It's always the command
dircolors, xsetroot, and sometimes my login shell (tcsh).

System: kernel 2.0.29/2.0.28
libc 5.2.18
gcc 2.7.2.1
binutils 2.7.0.3


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