linux-kernel - Re: [patch] i386-PDA, lockdep: fix %gs restore

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Message-ID: <20060911054855.GD11269@elte.hu>
Date:	Mon, 11 Sep 2006 07:48:56 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Andi Kleen <ak@...e.de>
Cc:	Jeremy Fitzhardinge <jeremy@...p.org>,
	Andrew Morton <akpm@...l.org>,
	Laurent Riffard <laurent.riffard@...e.fr>,
	Arjan van de Ven <arjan@...radead.org>,
	Kernel development list <linux-kernel@...r.kernel.org>,
	Jeremy Fitzhardinge <jeremy@...source.com>
Subject: Re: [patch] i386-PDA, lockdep: fix %gs restore


* Andi Kleen <ak@...e.de> wrote:

> On Monday 11 September 2006 07:25, Ingo Molnar wrote:
> > Jeremy,
> >
> > could you back out Andi's patch and try the patch below, does it fix the
> > crash too?
> 
> iirc the crash was long before any system calls could be called 
> (except maybe kernel_thread/clone, but for that %gs doesn't change)

the screenshot from Laurent:

   http://laurent.riffard.free.fr/2.6.18-rc6-mm1/

shows a much later crash, which crash is consistent with the bug fixed 
by my patch.

	Ingo
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