netdev - Re: [bug, netconsole, SLUB] BUG skbuff_head

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Message-ID: <20080721115555.GA24176@elte.hu>
Date:	Mon, 21 Jul 2008 13:55:55 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Evgeniy Polyakov <johnpol@....mipt.ru>
Cc:	Pekka Enberg <penberg@...helsinki.fi>,
	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
Subject: Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison
	overwritten


* Evgeniy Polyakov <johnpol@....mipt.ru> wrote:

> > I could try run tests with netconsole deactivated, if you think 
> > that's a worthwile line of probing this problem. (although that 
> > would make me do blind tests in essence - having kernel log output 
> > is really essential.)
> 
> Let's try this way first. If system will continue to crash, we will 
> add some debug options in various pathes. Existing reports do not 
> contain enough information unfortunately, so we will not lose too 
> much.

ok. I've turned off netconsole - 8 successful bootups in a row so far. 
The box is a slow booter/builder with an 8 kernels/hour test throughput, 
so if everything goes fine we should have meaningful results in about 10 
hours.

( there are other, faster testboxes in -tip testing with 33 kernels/hour 
  build+boot throughput where we'd have to wait only 2 hours - but as 
  per Murphy's law they dont trigger this bug ;-)

	Ingo
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