linux-kernel - Re: [PATCH] perf test x86: Fit memory leak in sample

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Date:	Sun, 20 Apr 2014 00:33:56 +0200
From:	Jiri Olsa <jolsa@...hat.com>
To:	Masanari Iida <standby24x7@...il.com>
Cc:	a.p.zijlstra@...llo.nl, paulus@...ba.org, mingo@...hat.com,
	acme@...nel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] perf test x86: Fit memory leak in sample_ustack()

On Sun, Apr 20, 2014 at 12:19:13AM +0200, Jiri Olsa wrote:
> On Sun, Apr 20, 2014 at 12:16:41AM +0900, Masanari Iida wrote:
> > buf is not freed, when kernel failed to get stack map
> > and return.
> > 
> > Signed-off-by: Masanari Iida <standby24x7@...il.com>
> 
> Acked-by: Jiri Olsa <jolsa@...hat.com>
> 
> thanks,
> jirka
> 
> > ---
> >  tools/perf/arch/x86/tests/dwarf-unwind.c | 1 +
> >  1 file changed, 1 insertion(+)
> > 
> > diff --git a/tools/perf/arch/x86/tests/dwarf-unwind.c b/tools/perf/arch/x86/tests/dwarf-unwind.c
> > index b602ad9..68f2711 100644
> > --- a/tools/perf/arch/x86/tests/dwarf-unwind.c
> > +++ b/tools/perf/arch/x86/tests/dwarf-unwind.c
> > @@ -26,6 +26,7 @@ static int sample_ustack(struct perf_sample *sample,
> >  	map = map_groups__find(&thread->mg, MAP__FUNCTION, (u64) sp);
> >  	if (!map) {
> >  		pr_debug("failed to get stack map\n");
> > +		kfree(buf);

and changing this to free(buf) ;-)

jirka

> >  		return -1;
> >  	}
> >  
> > -- 
> > 1.9.2.468.g3f0c02a
> > 
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