linux-kernel - [PATCH] selftests/mm/mkdirty: Fix memory leak in test_uffdio

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Message-Id: <20250114023838.48589-1-liuye@kylinos.cn>
Date: Tue, 14 Jan 2025 10:38:38 +0800
From: liuye <liuye@...inos.cn>
To: akpm@...ux-foundation.org,
	shuah@...nel.org
Cc: linux-mm@...ck.org,
	linux-kselftest@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	liuye <liuye@...inos.cn>
Subject: [PATCH] selftests/mm/mkdirty: Fix memory leak in test_uffdio_copy()

    Release memory before exception branch returns to prevent memory leaks

Checking tools/testing/selftests/mm/mkdirty.c ...
tools/testing/selftests/mm/mkdirty.c:283:3: error: Memory leak: src [memleak]
  return;
  ^

Signed-off-by: liuye <liuye@...inos.cn>
---
 tools/testing/selftests/mm/mkdirty.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/testing/selftests/mm/mkdirty.c b/tools/testing/selftests/mm/mkdirty.c
index 1db134063c38..af2fce496912 100644
--- a/tools/testing/selftests/mm/mkdirty.c
+++ b/tools/testing/selftests/mm/mkdirty.c
@@ -280,6 +280,7 @@ static void test_uffdio_copy(void)
 	dst = mmap(NULL, pagesize, PROT_READ, MAP_PRIVATE|MAP_ANON, -1, 0);
 	if (dst == MAP_FAILED) {
 		ksft_test_result_fail("mmap() failed\n");
+		free(src);
 		return;
 	}
 
-- 
2.25.1