linux-kernel - Re: [PATCH] perf: Fix crash when vmlinux_path_

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Date:	Thu, 09 Sep 2010 12:48:27 -0400
From:	Davidlohr Bueso <dave@....org>
To:	Arnaldo Carvalho de Melo <acme@...hat.com>
Cc:	a.p.zijlstra@...llo.nl, mingo@...e.hu,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] perf: Fix crash when vmlinux_path__exit().

On Thu, 2010-09-09 at 13:44 -0300, Arnaldo Carvalho de Melo wrote:
> Em Thu, Sep 09, 2010 at 10:48:10AM -0400, Davidlohr Bueso escreveu:
> > [PATCH] perf: Fix crash when vmlinux_path__exit()
> > 
> > When running perf {timechart,sched} record an incorrect freeing occurs after Ctrl-C'ing to
> > exit the application, the following is seen:
> 
> There was a fix for this that just checked if it was already
> initialized, lemme check.

Right, an initialization check would also correct the illegal free. IMO
it would still be appropriate to double check this in
vmlinux_path__init().

> 
> You don't mention what is the git tree you are using or if this is from
> some tarball, can you clarify?
> 
Sorry, this under the latest mainline kernel (last pull was Today). 

Davidlohr


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