linux-kernel - Re: [PATCH] perf bpf: Fix memory leak during synthesis.

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Date:   Thu, 26 Aug 2021 11:49:43 -0700
From:   Ian Rogers <irogers@...gle.com>
To:     kajoljain <kjain@...ux.ibm.com>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org,
        eranian@...gle.com
Subject: Re: [PATCH] perf bpf: Fix memory leak during synthesis.

On Thu, Aug 26, 2021 at 1:02 AM kajoljain <kjain@...ux.ibm.com> wrote:
>
>
>
> On 8/26/21 5:46 AM, Ian Rogers wrote:
> > BTF needs to be freed with btf_free.
> >
> > Signed-off-by: Ian Rogers <irogers@...gle.com>
> > ---
> >  tools/perf/util/bpf-event.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/tools/perf/util/bpf-event.c b/tools/perf/util/bpf-event.c
> > index cdecda1ddd36..d193104db7f7 100644
> > --- a/tools/perf/util/bpf-event.c
> > +++ b/tools/perf/util/bpf-event.c
> > @@ -296,7 +296,7 @@ static int perf_event__synthesize_one_bpf_prog(struct perf_session *session,
> >
> >  out:
> >       free(info_linear);
> > -     free(btf);
> > +     btf__free(btf);
>
> Hi Ian,
>    Patch looks good to me. I can see in one more place we are using free(btf) in the
> same file. Can you correct that as well.

Done. Also found 1 more in annotate :-)
https://lore.kernel.org/lkml/20210826184833.408563-1-irogers@google.com/T/#u

Thanks,
Ian

> Thanks,
> Kajol Jain
>
> >       return err ? -1 : 0;
> >  }
> >
> >