linux-kernel - Re: [PATCH 06/11] perf test: Fix memory leaks in parse-metric test

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Date:   Tue, 15 Sep 2020 09:23:16 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Namhyung Kim <namhyung@...nel.org>
Cc:     Jiri Olsa <jolsa@...hat.com>, Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Stephane Eranian <eranian@...gle.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Andi Kleen <ak@...ux.intel.com>,
        Ian Rogers <irogers@...gle.com>
Subject: Re: [PATCH 06/11] perf test: Fix memory leaks in parse-metric test

Em Tue, Sep 15, 2020 at 12:18:14PM +0900, Namhyung Kim escreveu:
> It didn't release resources when there's an error so the
> test_recursion_fail() will leak some memory.

Thanks, applied.

- Arnaldo
> 
> Acked-by: Jiri Olsa <jolsa@...hat.com>
> Fixes: 0a507af9c681a ("perf tests: Add parse metric test for ipc metric")
> Signed-off-by: Namhyung Kim <namhyung@...nel.org>
> ---
>  tools/perf/tests/parse-metric.c | 14 +++++++++-----
>  1 file changed, 9 insertions(+), 5 deletions(-)
> 
> diff --git a/tools/perf/tests/parse-metric.c b/tools/perf/tests/parse-metric.c
> index 23db8acc492d..cd7331aac3bd 100644
> --- a/tools/perf/tests/parse-metric.c
> +++ b/tools/perf/tests/parse-metric.c
> @@ -153,8 +153,10 @@ static int __compute_metric(const char *name, struct value *vals,
>  		return -ENOMEM;
>  
>  	cpus = perf_cpu_map__new("0");
> -	if (!cpus)
> +	if (!cpus) {
> +		evlist__delete(evlist);
>  		return -ENOMEM;
> +	}
>  
>  	perf_evlist__set_maps(&evlist->core, cpus, NULL);
>  
> @@ -163,10 +165,11 @@ static int __compute_metric(const char *name, struct value *vals,
>  					     false, false,
>  					     &metric_events);
>  	if (err)
> -		return err;
> +		goto out;
>  
> -	if (perf_evlist__alloc_stats(evlist, false))
> -		return -1;
> +	err = perf_evlist__alloc_stats(evlist, false);
> +	if (err)
> +		goto out;
>  
>  	/* Load the runtime stats with given numbers for events. */
>  	runtime_stat__init(&st);
> @@ -178,13 +181,14 @@ static int __compute_metric(const char *name, struct value *vals,
>  	if (name2 && ratio2)
>  		*ratio2 = compute_single(&metric_events, evlist, &st, name2);
>  
> +out:
>  	/* ... clenup. */
>  	metricgroup__rblist_exit(&metric_events);
>  	runtime_stat__exit(&st);
>  	perf_evlist__free_stats(evlist);
>  	perf_cpu_map__put(cpus);
>  	evlist__delete(evlist);
> -	return 0;
> +	return err;
>  }
>  
>  static int compute_metric(const char *name, struct value *vals, double *ratio)
> -- 
> 2.28.0.618.gf4bc123cb7-goog
> 

-- 

- Arnaldo