linux-kernel - Re: [bug] SLUB + mm/slab.c boot crash in -rc9

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Message-ID: <20080415215504.GA9066@elte.hu>
Date:	Tue, 15 Apr 2008 23:55:04 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Christoph Lameter <clameter@....com>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Pekka Enberg <penberg@...helsinki.fi>,
	linux-kernel@...r.kernel.org, Mel Gorman <mel@....ul.ie>,
	Nick Piggin <npiggin@...e.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>, Yinghai.Lu@....com,
	apw@...dowen.org,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Subject: Re: [bug] SLUB + mm/slab.c boot crash in -rc9


* Christoph Lameter <clameter@....com> wrote:

> On Tue, 15 Apr 2008, Ingo Molnar wrote:
> 
> > btw., as i progress with that bisection effort, i triggered new crash 
> > patterns, which lappen later during bootup:
> 
> It may help to run with slub_debug (or CONFIG_SLUB_DEBUG_ON) then to 
> detect the corruption as early as possible. Only works if you get by 
> kmem_cache_init() though. Should give us some informative dumps of 
> what is exactly corrupted if it hits a slab object.

grumble. Do you read my bugreports?

CONFIG_SLUB_DEBUG=y
CONFIG_SLUB=y
CONFIG_SLUB_DEBUG_ON=y

	Ingo
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