linux-kernel - [PATCH 5.19 0867/1157] selftest/vm: uninitialized variable in main()

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Date:   Mon, 15 Aug 2022 20:03:43 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Dan Carpenter <dan.carpenter@...cle.com>,
        Mina Almasry <almasrymina@...gle.com>,
        Muchun Song <songmuchun@...edance.com>,
        Mike Kravetz <mike.kravetz@...cle.com>,
        Shuah Khan <shuah@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.19 0867/1157] selftest/vm: uninitialized variable in main()

From: Dan Carpenter <dan.carpenter@...cle.com>

[ Upstream commit 360b420dbded8ad5b70a41de98e77354dd9e7d36 ]

Initialize "length" to zero by default.

Link: https://lkml.kernel.org/r/YtZzjvHXVXMXxpXO@kili
Fixes: ff712a627f72 ("selftests/vm: cleanup hugetlb file after mremap test")
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
Reviewed-by: Mina Almasry <almasrymina@...gle.com>
Reviewed-by: Muchun Song <songmuchun@...edance.com>
Cc: Mike Kravetz <mike.kravetz@...cle.com>
Cc: Shuah Khan <shuah@...nel.org>
Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 tools/testing/selftests/vm/hugepage-mremap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/vm/hugepage-mremap.c b/tools/testing/selftests/vm/hugepage-mremap.c
index 585978f181ed..e63a0214f639 100644
--- a/tools/testing/selftests/vm/hugepage-mremap.c
+++ b/tools/testing/selftests/vm/hugepage-mremap.c
@@ -107,7 +107,7 @@ static void register_region_with_uffd(char *addr, size_t len)
 
 int main(int argc, char *argv[])
 {
-	size_t length;
+	size_t length = 0;
 
 	if (argc != 2 && argc != 3) {
 		printf("Usage: %s [length_in_MB] <hugetlb_file>\n", argv[0]);
-- 
2.35.1