linux-kernel - [PATCH] perf svghelper: fix memory leak in svg_build_topology

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Date:   Wed, 3 Jun 2020 11:00:58 +0800
From:   Li Bin <huawei.libin@...wei.com>
To:     <acme@...nel.org>, <linux-kernel@...r.kernel.org>
CC:     <liwei391@...wei.com>, <xiexiuqi@...wei.com>,
        <huawei.libin@...wei.com>
Subject: [PATCH] perf svghelper: fix memory leak in svg_build_topology_map

Fix leak of memory pointed to by t.sib_thr and t.sib_core in
svg_build_topology_map in the non-error path.

Signed-off-by: Li Bin <huawei.libin@...wei.com>
---
 tools/perf/util/svghelper.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/perf/util/svghelper.c b/tools/perf/util/svghelper.c
index 96f941e..d50955f 100644
--- a/tools/perf/util/svghelper.c
+++ b/tools/perf/util/svghelper.c
@@ -754,6 +754,7 @@ int svg_build_topology_map(struct perf_env *env)
 	int i, nr_cpus;
 	struct topology t;
 	char *sib_core, *sib_thr;
+	int ret = -1;
 
 	nr_cpus = min(env->nr_cpus_online, MAX_NR_CPUS);
 
@@ -798,12 +799,11 @@ int svg_build_topology_map(struct perf_env *env)
 		topology_map[i] = -1;
 
 	scan_core_topology(topology_map, &t, nr_cpus);
-
-	return 0;
+	ret = 0;
 
 exit:
 	zfree(&t.sib_core);
 	zfree(&t.sib_thr);
 
-	return -1;
+	return ret;
 }
-- 
1.7.12.4