linux-kernel - Re: [PATCH v2 3/3] perf metric: Fix memory leaks.

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Message-ID: <YYfzqLMiPpWlzVni@kernel.org>
Date:   Sun, 7 Nov 2021 12:41:28 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Ian Rogers <irogers@...gle.com>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        John Garry <john.garry@...wei.com>,
        linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org,
        eranian@...gle.com
Subject: Re: [PATCH v2 3/3] perf metric: Fix memory leaks.

Em Sun, Nov 07, 2021 at 01:00:02AM -0800, Ian Rogers escreveu:
> Certain error paths may leak memory as caught by address sanitizer.
> Ensure this is cleaned up to make sure address/leak sanitizer is happy.

Thanks, applied.

- Arnaldo

 
> Fixes: 5ecd5a0c7d1c ("perf metrics: Modify setup and deduplication")
> Signed-off-by: Ian Rogers <irogers@...gle.com>
> ---
>  tools/perf/util/metricgroup.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/tools/perf/util/metricgroup.c b/tools/perf/util/metricgroup.c
> index 1b43cbc1961d..fffe02aae3ed 100644
> --- a/tools/perf/util/metricgroup.c
> +++ b/tools/perf/util/metricgroup.c
> @@ -228,6 +228,7 @@ static void metric__free(struct metric *m)
>  	free(m->metric_refs);
>  	expr__ctx_free(m->pctx);
>  	free((char *)m->modifier);
> +	evlist__delete(m->evlist);
>  	free(m);
>  }
>  
> @@ -1482,8 +1483,10 @@ static int parse_groups(struct evlist *perf_evlist, const char *str,
>  	}
>  
>  
> -	if (combined_evlist)
> +	if (combined_evlist) {
>  		evlist__splice_list_tail(perf_evlist, &combined_evlist->core.entries);
> +		evlist__delete(combined_evlist);
> +	}
>  
>  	list_for_each_entry(m, &metric_list, nd) {
>  		if (m->evlist)
> -- 
> 2.34.0.rc0.344.g81b53c2807-goog

-- 

- Arnaldo