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        <mark.rutland@arm.com>, <alexander.shishkin@linux.intel.com>,
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CC:     "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        <hushiyuan@huawei.com>, <linfeilong@huawei.com>
From:   Yunfeng Ye <yeyunfeng@huawei.com>
Subject: [PATCH v2] perf kmem: Fix memory leak in compact_gfp_flags()
Message-ID: <7fd48f77-fbc4-b99f-60c1-ccc7d8d287e9@huawei.com>
Date:   Wed, 16 Oct 2019 21:26:50 +0800
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The memory @orig_flags is allocated by strdup(), it is freed on the
normal path, but leak to free on the error path.

Fix this by adding free(orig_flags) on the error path.

Fixes: 0e11115644b3 ("perf kmem: Print gfp flags in human readable string")
Signed-off-by: Yunfeng Ye <yeyunfeng@huawei.com>
---
v1 -> v2:
 - add "Fixes:" message

 tools/perf/builtin-kmem.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/perf/builtin-kmem.c b/tools/perf/builtin-kmem.c
index 1e61e353f579..9661671cc26e 100644
--- a/tools/perf/builtin-kmem.c
+++ b/tools/perf/builtin-kmem.c
@@ -691,6 +691,7 @@ static char *compact_gfp_flags(char *gfp_flags)
 			new = realloc(new_flags, len + strlen(cpt) + 2);
 			if (new == NULL) {
 				free(new_flags);
+				free(orig_flags);
 				return NULL;
 			}

-- 
2.7.4.3