linux-kernel - Re: [bug, netconsole, SLUB] BUG skbuff_head

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Message-ID: <20080718091146.GQ6875@elte.hu>
Date:	Fri, 18 Jul 2008 11:11:46 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Pekka J Enberg <penberg@...helsinki.fi>
Cc:	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	Vegard Nossum <vegard.nossum@...il.com>,
	"Rafael J. Wysocki" <rjw@...k.pl>, cl@...ux-foundation.org,
	davem@...emloft.net, johnpol@....mipt.ru
Subject: Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison
	overwritten


* Pekka J Enberg <penberg@...helsinki.fi> wrote:

> >   Object 0xf658ae70:  6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
> 
> It's bit unfortunate that we don't see full dump of the corruption 
> here because SLUB limits the output to 128 bytes. Ingo, you might want 
> to try this patch so that we can see all of it:

ok, applied this as a debug special to tip/out-of-tree - future 
incidents should have the full object dump.

would makes sense for upstream too i think, or increase the limit to 4K 
or so. (which is still fair to be dumped into a syslog)

	Ingo
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