Bug#700739: Kernel panic - not syncing: Fatal exception in interrupt

[Bjørn Mork <bjorn@mork.no>]

Kubo Hiroshi <h-kubo@geisya.or.jp> writes:

> Hi.
>
>>> Do the functions 'i8xx_irq_handler' and 'queue_work_on' always appear in
>>> the call trace?
>> 
>> I can't remember. If I encounter the problem again, 
>> I will check it.
>
> After the last reply, I encountered the same problems twice.
> In the both problems, the functions 'i8xx_irq_handler' and
>  'queue_work_on' appeared in the call trace.

This is most likely a duplicate of http://bugs.debian.org/692607

I am sorry I haven't had any time following up on that.  It seems that
the necessarry debugging output has been collected by Сергей, confirming
the suspicions.

But I still don't see how this corruption can happen, and the fact that
the machine crashes even if we ignore it shows that it is not limited to
this particular struct.  It's just one of the points where we will crash
after such corruptions because of the BUG_ON in kernel/workqueue.c


Bjørn