linux-kernel - Re: [PROBLEM] 2.6.22-rc2 panics on x86-64 with slub

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Message-ID: <20070522092439.GA19895@elte.hu>
Date:	Tue, 22 May 2007 11:24:39 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Srihari Vijayaraghavan <sriharivijayaraghavan@...oo.com.au>
Cc:	Christoph Lameter <clameter@....com>,
	Hugh Dickins <hugh@...itas.com>,
	Oliver Xymoron <oxymoron@...te.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jens Axboe <jens.axboe@...cle.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PROBLEM] 2.6.22-rc2 panics on x86-64 with slub


* Srihari Vijayaraghavan <sriharivijayaraghavan@...oo.com.au> wrote:

> Just another data point: with the flick of CONFIG_SMP, I'm in control 
> of the hangs/crashes ;-).
> 
> Yup, with CONFIG_SMP=n, I'm unable to reproduce the problem. It's 
> quite stable actually (having completed a dozen kernel compile 
> sessions so far).
> 
> I suspected this after seeing spinlock issues on both cores of my CPU 
> in my earlier report. Just a stab in the dark with some unexpected 
> luck :-).

could you enable CONFIG_PROVE_LOCKING - does it spit out any warning 
into the syslog?

	Ingo
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