linux-kernel - Re: [PATCH 02/11] perf metric: Fix some memory leaks

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Message-ID: <20200915115901.GD720847@kernel.org>
Date:   Tue, 15 Sep 2020 08:59:01 -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>,
        Kajol Jain <kjain@...ux.ibm.com>,
        John Garry <john.garry@...wei.com>
Subject: Re: [PATCH 02/11] perf metric: Fix some memory leaks - part 2

Em Tue, Sep 15, 2020 at 12:18:10PM +0900, Namhyung Kim escreveu:
> The metric_event_delete() missed to free expr->metric_events and it
> should free an expr when metric_refs allocation failed.
 

Thanks, applied.

- Arnaldo

> Cc: Kajol Jain <kjain@...ux.ibm.com>
> Cc: John Garry <john.garry@...wei.com>
> Cc: Ian Rogers <irogers@...gle.com>
> Acked-by: Jiri Olsa <jolsa@...hat.com>
> Fixes: 4ea2896715e67 ("perf metric: Collect referenced metrics in struct metric_expr")
> Signed-off-by: Namhyung Kim <namhyung@...nel.org>
> ---
>  tools/perf/util/metricgroup.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/tools/perf/util/metricgroup.c b/tools/perf/util/metricgroup.c
> index 90d14c63babb..53747df601fa 100644
> --- a/tools/perf/util/metricgroup.c
> +++ b/tools/perf/util/metricgroup.c
> @@ -84,6 +84,7 @@ static void metric_event_delete(struct rblist *rblist __maybe_unused,
>  
>  	list_for_each_entry_safe(expr, tmp, &me->head, nd) {
>  		free(expr->metric_refs);
> +		free(expr->metric_events);
>  		free(expr);
>  	}
>  
> @@ -315,6 +316,7 @@ static int metricgroup__setup_events(struct list_head *groups,
>  			if (!metric_refs) {
>  				ret = -ENOMEM;
>  				free(metric_events);
> +				free(expr);
>  				break;
>  			}
>  
> -- 
> 2.28.0.618.gf4bc123cb7-goog
> 

-- 

- Arnaldo