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DateTue, 03 May 2005 21:49:01 +1200
FromReuben Farrelly <>
SubjectRe: 2.6.12-rc3-mm1
Hi,

Andrew Morton wrote:
> Reuben Farrelly <reuben-lkml@reub.net> wrote:
> 
>>Hi Andrew,
>>
>>Andrew Morton wrote:
>>
>>>ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.12-rc3/2.6.12-rc3-mm1/
>>>
>>>- There's still a bug in the new timer code.  If you think you hit it,
>>>  please revert 
>>>
>>>	timers-fixes-improvements-fix.patch			then
>>>	timers-fixes-improvements-smp_processor_id-fix.patch	then
>>>	timers-fixes-improvements.patch
>>>
>>>  or, better, fix the bug.
>>
>>FWIW, I can reproduce this timer bug fairly consistently, by simply 
>>rebooting my cisco router.  That means that my linux box has no default 
>>gateway, and hence the networking blows up within about 30s and dies 
>>with a stack trace which has references to timers.
>>
>>I'll back out those three patches and see if it continues, but hopefully 
>>my little discovery is useful to someone in terms of coming up with a 
>>fix....
>>
> 
> 
> Rather than backing things out, please add this instead:
> 
> 
> From: Oleg Nesterov <oleg@tv-sign.ru>
> 
> The bug was identified by Maneesh Soni.

Yup, this patch seems to fix it.  I did 3 router reboots, and my linux 
box held up fine.  Previous to this patch it had fatally oopsed 5 out of 
the 6 times I reloaded the router..

Thanks :)

reuben

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