Re: 2.4.22-pre lockups (now decoded oops for pre10)

[Willy Tarreau <willy@w.ods.org>]

On Wed, Aug 06, 2003 at 09:41:50AM +0200, Stephan von Krawczynski wrote:
 
> Code;  c0144b14 <__remove_from_queues+14/30>
> 00000000 <_EIP>:
> Code;  c0144b14 <__remove_from_queues+14/30>   <=====
>    0:   89 02                     mov    %eax,(%edx)   <=====
> Code;  c0144b16 <__remove_from_queues+16/30>
>    2:   c7 41 30 00 00 00 00      movl   $0x0,0x30(%ecx)
> Code;  c0144b1d <__remove_from_queues+1d/30>
>    9:   89 4c 24 04               mov    %ecx,0x4(%esp,1)
> Code;  c0144b21 <__remove_from_queues+21/30>
>    d:   e9 7a ff ff ff            jmp    ffffff8c <_EIP+0xffffff8c>
> Code;  c0144b26 <__remove_from_queues+26/30>
>   12:   8d 76 00                  lea    0x0(%esi),%esi

once again, it's *pprev=next which is is causing trouble, with pprev=6 this
time (fs/buffer.c:523). There really seems to be something playing badly with
this...

I find amazing that such widely used portions of code only trigger panics on
your system ! either it's a rare combinations of several components/drivers, or
a strange hardware problem, although I can't imagine which (cpu? bus locking?).

Cheers,
Willy