linux-kernel - [BUG] perf and kmemcheck : fatal combination

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Date:	Mon, 25 Apr 2011 18:08:51 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Ingo Molnar <mingo@...e.hu>,
	Arnaldo Carvalho de Melo <acme@...radead.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>,
	Pekka Enberg <penberg@...nel.org>,
	Vegard Nossum <vegardno@....uio.no>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>
Subject: [BUG] perf and kmemcheck : fatal combination

Hi guys

Just got a panic on a kmemcheck kernel, latest linux-2.6 tree.

I forgot I had kmemcheck enabled, and started "perf top" just because my
machine was damn slow... Oh well...

Crash in do_nmi -> nmi_enter() -> BUG_ON(in_nmi());

Thanks



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