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

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Message-ID: <1303808257.3012.3.camel@edumazet-laptop>
Date:	Tue, 26 Apr 2011 10:57:37 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Arnaldo Carvalho de Melo <acme@...radead.org>,
	Paul Mackerras <paulus@...ba.org>,
	Pekka Enberg <penberg@...nel.org>,
	Vegard Nossum <vegardno@....uio.no>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
Subject: Re: [BUG] perf and kmemcheck : fatal combination

Le mardi 26 avril 2011 à 10:04 +0200, Ingo Molnar a écrit :

> Eric, does it manage to limp along if you remove the BUG_ON()?
> 
> That risks NMI recursion but maybe it allows you to see why things are slow, 
> before it crashes ;-)
> 

If I remove the BUG_ON from nmi_enter, it seems to crash very fast 



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