netdev - Re: kernel 2.6.37 : oops in cleanup

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Message-ID: <4D7DF1A3.6020501@univ-nantes.fr>
Date:	Mon, 14 Mar 2011 11:44:51 +0100
From:	Yann Dupont <Yann.Dupont@...v-nantes.fr>
To:	Eric Dumazet <eric.dumazet@...il.com>
CC:	linux-kernel@...r.kernel.org, netdev <netdev@...r.kernel.org>
Subject: Re: kernel 2.6.37 : oops in cleanup_once

Le 02/02/2011 16:08, Eric Dumazet a écrit :


> I suspect a mem corruption from another layer (not inetpeer)
>
> Unfortunately many kmem caches share the "64 bytes" cache.
>
> Could you please add "slub_nomerge" on your boot command ?
>
...

>
>> -Is there a very severe impact on performance ?
>>
> not at all
>
Maybe there is an impact after all : since then, we don't have problems 
anymore !

linkwood:~# uptime
  11:42:03 up 39 days, 17:08,  3 users,  load average: 0.01, 0.03, 0.05

So... could slub_nomerge hide or simply avoid the problem ?
Or are we just lucky this time ?


-- 
Yann Dupont - Service IRTS, DSI Université de Nantes
Tel : 02.53.48.49.20 - Mail/Jabber : Yann.Dupont@...v-nantes.fr

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