On 06/13/2007 03:17 PM, Trond Myklebust wrote:
> On Wed, 2007-06-13 at 14:00 +0200, Maciej Soltysiak wrote:
>> =======================
>> Code: 10 89 5c 24 10 89 c3 89 7c 24 18 89 d7 89 74 24 14 8b 70 28 75 1a 8b
>> 4e 08 89 fa 89 d8 ff 51 18 8b 5c 24 10 83 74 24 14 8b 7c 24 <18> 83 c4 1c c3
>> 89 74 24 0c 8b 40 10 8b 40 24 8b 40 10 8b 40 08 EIP: [<f0a93c94>]
>> rpcauth_checkverf+0x34/0x70 [sunrpc] SS:ESP 0068:e64b5eec
>
> At a first guess, it looks as though something has scribbled over your
> credential. Have you tried running this kernel with slab debugging
> enabled?
>
Disassembly of this code yields gibberish, like a bit got flipped
somewhere:
1c: ff 51 18 call *0x18(%ecx)
1f: 8b 5c 24 10 mov 0x10(%esp),%ebx
23: 83 74 24 14 8b xorl $0xffffff8b,0x14(%esp)
28: 7c 24 jl 4e <_EIP+0x4e>
0: 18 83 c4 1c c3 89 sbb %al,0x89c31cc4(%ebx) <=====
6: 74 24 je 2c <_EIP+0x2c>
8: 0c 8b or $0x8b,%al
a: 40 inc %eax
b: 10 8b 40 24 8b 40 adc %cl,0x408b2440(%ebx)
11: 10 .byte 0x10
12: 8b 40 08 mov 0x8(%eax),%eax
Somewhere around 23: things went horribly wrong.
At 12: it starts to make sense again.
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