linux-kernel - [PATCH 18/20] perf trace: free strings in trace__parse_events

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Message-Id: <34d08535b11124106b859790549991abff5a7de8.1626343282.git.rickyman7@gmail.com>
Date:   Thu, 15 Jul 2021 18:07:23 +0200
From:   Riccardo Mancini <rickyman7@...il.com>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     Ian Rogers <irogers@...gle.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Mark Rutland <mark.rutland@....com>,
        Jiri Olsa <jolsa@...hat.com>, linux-kernel@...r.kernel.org,
        linux-perf-users@...r.kernel.org,
        Riccardo Mancini <rickyman7@...il.com>
Subject: [PATCH 18/20] perf trace: free strings in trace__parse_events_option

ASan reports several memory leaks running the perf test
"88: Check open filename arg using perf trace + vfs_getname".
The fourth of these leaks is related to some strings never being freed
in trace__parse_events_option.

This patch adds the missing frees.

Signed-off-by: Riccardo Mancini <rickyman7@...il.com>
---
 tools/perf/builtin-trace.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index d9c65d55a9ae7526..4a677f3ff273887a 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -4659,6 +4659,9 @@ static int trace__parse_events_option(const struct option *opt, const char *str,
 		err = parse_events_option(&o, lists[0], 0);
 	}
 out:
+	free(strace_groups_dir);
+	free(lists[0]);
+	free(lists[1]);
 	if (sep)
 		*sep = ',';
 
-- 
2.31.1