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Date: Sun, 15 Aug 2004 21:17:15 +0200
From: Ingo Molnar <mingo@elte.hu>
To: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: LKML <linux-kernel@vger.kernel.org>,
       Felipe Alfaro Solana <felipe_alfaro@linuxmail.org>,
       Florian Schmidt <mista.tapas@gmx.net>,
       Lee Revell <rlrevell@joe-job.com>
Subject: Re: [patch] voluntary-preempt-2.6.8.1-P0
Message-ID: <20040815191715.GA30643@elte.hu>
References: <20040801193043.GA20277@elte.hu> <20040809104649.GA13299@elte.hu> <20040810132654.GA28915@elte.hu> <20040812235116.GA27838@elte.hu> <1092382825.3450.19.camel@mindpipe> <20040813104817.GI8135@elte.hu> <1092432929.3450.78.camel@mindpipe> <20040814072009.GA6535@elte.hu> <20040815115649.GA26259@elte.hu> <1092578502.6543.4.camel@twins>
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* Peter Zijlstra <a.p.zijlstra@chello.nl> wrote:

> It still locks up hard for me when voluntary-preempt=3, however it
> does finish the boot; dmesg attached. The lockup occurs several
> minutes into use; usually by by the time I've started X, launched
> evolution and selected my first imap folder the machine's dead.

can you set up a serial logging via a null modem cable from that box to
another box? Then enable the NMI watchdog via nmi_watchdog=1 and
reproduce the lockup - the NMI watchdog should trigger and should
produce a traceback to the serial console.

	Ingo