netdev - Re: WARNING: at mm/slub.c:3357, kernel BUG at mm/slub.c:3413

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Message-ID: <20111121142102.GA1676@x4.trippels.de>
Date:	Mon, 21 Nov 2011 15:21:02 +0100
From:	Markus Trippelsdorf <markus@...ppelsdorf.de>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	"Alex,Shi" <alex.shi@...el.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	Christoph Lameter <cl@...ux-foundation.org>,
	Pekka Enberg <penberg@...nel.org>,
	Matt Mackall <mpm@...enic.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: WARNING: at mm/slub.c:3357, kernel BUG at mm/slub.c:3413

On 2011.11.21 at 15:16 +0100, Eric Dumazet wrote:
> Le lundi 21 novembre 2011 à 14:15 +0100, Markus Trippelsdorf a écrit :
> 
> > I've enabled CONFIG_SLUB_DEBUG_ON and this is what happend:
> > 
> 
> Thanks
> 
> Please continue to provide more samples.
> 
> There is something wrong somewhere, but where exactly, its hard to say.
> 
> Something is keeping a pointer to freed memory and reuse it while memory
> had been reused.
> 
> Are you using hugepages ?

Only CONFIG_TRANSPARENT_HUGEPAGE and CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS.

I've increased LOG_BUF_SHIFT to 18, because it looks like the beginning
of the SLUB_DEBUG output was cut off last time.

-- 
Markus
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