Re: [PATCH] perf test x86: Fit memory leak in sample_ustack()

From: Jiri Olsa
Date: Sat Apr 19 2014 - 19:07:41 EST


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@xxxxxxxxx>
>
> Acked-by: Jiri Olsa <jolsa@xxxxxxxxxx>
>
> 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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