[PATCH 5.4 287/388] perf metricgroup: Free metric_events on error

* [PATCH 5.4 287/388] perf metricgroup: Free metric_events on error
       [not found] <20200929110010.467764689@linuxfoundation.org>
@ 2020-09-29 11:00 ` Greg Kroah-Hartman
  0 siblings, 0 replies; only message in thread
From: Greg Kroah-Hartman @ 2020-09-29 11:00 UTC (permalink / raw)
  To: linux-kernel
  Cc: Greg Kroah-Hartman, stable, Ian Rogers, Alexander Shishkin,
	Alexei Starovoitov, Andi Kleen, Andrii Nakryiko, Cong Wang,
	Daniel Borkmann, Jin Yao, Jiri Olsa, John Fastabend, John Garry,
	Kajol Jain, Kan Liang, Kim Phillips, Mark Rutland,
	Martin KaFai Lau, Namhyung Kim, Peter Zijlstra, Song Liu,
	Stephane Eranian, Vince Weaver, Yonghong Song, bpf, kp singh,
	netdev, Arnaldo Carvalho de Melo, Sasha Levin

From: Ian Rogers <irogers@google.com>

[ Upstream commit a159e2fe89b4d1f9fb54b0ae418b961e239bf617 ]

Avoid a simple memory leak.

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Andrii Nakryiko <andriin@fb.com>
Cc: Cong Wang <xiyou.wangcong@gmail.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: John Fastabend <john.fastabend@gmail.com>
Cc: John Garry <john.garry@huawei.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Kim Phillips <kim.phillips@amd.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Martin KaFai Lau <kafai@fb.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <songliubraving@fb.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: Yonghong Song <yhs@fb.com>
Cc: bpf@vger.kernel.org
Cc: kp singh <kpsingh@chromium.org>
Cc: netdev@vger.kernel.org
Link: http://lore.kernel.org/lkml/20200508053629.210324-10-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 tools/perf/util/metricgroup.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/perf/util/metricgroup.c b/tools/perf/util/metricgroup.c
index 940a6e7a68549..7753c3091478a 100644
--- a/tools/perf/util/metricgroup.c
+++ b/tools/perf/util/metricgroup.c
@@ -174,6 +174,7 @@ static int metricgroup__setup_events(struct list_head *groups,
 		if (!evsel) {
 			pr_debug("Cannot resolve %s: %s\n",
 					eg->metric_name, eg->metric_expr);
+			free(metric_events);
 			continue;
 		}
 		for (i = 0; i < eg->idnum; i++)
@@ -181,11 +182,13 @@ static int metricgroup__setup_events(struct list_head *groups,
 		me = metricgroup__lookup(metric_events_list, evsel, true);
 		if (!me) {
 			ret = -ENOMEM;
+			free(metric_events);
 			break;
 		}
 		expr = malloc(sizeof(struct metric_expr));
 		if (!expr) {
 			ret = -ENOMEM;
+			free(metric_events);
 			break;
 		}
 		expr->metric_expr = eg->metric_expr;
-- 
2.25.1




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