linux-kernel - Re: [PATCH/RFC 2/2] perf tools: Check callchain is corrupted

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Message-ID: <20120601175259.GB11806@dev4103.snc6.facebook.com>
Date:	Fri, 1 Jun 2012 10:52:59 -0700
From:	Zachary Landau <zacharyl@...com>
To:	Namhyung Kim <namhyung.kim@....com>
CC:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>,
	Ingo Molnar <mingo@...hat.com>,
	Namhyung Kim <namhyung@...il.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Sunjin Yang <fan4326@...il.com>
Subject: Re: [PATCH/RFC 2/2] perf tools: Check callchain is corrupted

On Thu, May 31, 2012 at 02:43:27PM +0900, Namhyung Kim wrote:
> We faced segmentation fault on perf top -G at very high sampling
> rate due to a corrupted callchain. While the root cause was not
> revealed (I failed to figure it out), this patch tries to protect
> us from the segfault on such cases.
> 
> Reported-by: Arnaldo Carvalho de Melo <acme@...hat.com>
> Signed-off-by: Namhyung Kim <namhyung.kim@....com>

Acked-by: Zachary Landau <zacharyl@...com>

- Zack
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