linux-kernel - [PATCH linux-next] testing/vm/: fix application of sizeof to pointer

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Date:   Thu, 19 Aug 2021 20:24:30 -0700
From:   CGEL <cgel.zte@...il.com>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     Shuah Khan <shuah@...nel.org>, linux-mm@...ck.org,
        linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org,
        jing yangyang <jing.yangyang@....com.cn>,
        Zeal Robot <zealci@....com.cn>
Subject: [PATCH linux-next] testing/vm/: fix application of sizeof to pointer

From: jing yangyang <jing.yangyang@....com.cn>

sizeof when applied to a pointer typed expression gives the size of the
pointer.

./tools/testing/selftests/vm/split_huge_page_test.c:344:36-42: ERROR application
of sizeof to pointer

This issue was detected with the help of Coccinelle.

Reported-by: Zeal Robot <zealci@....com.cn>
Signed-off-by: jing yangyang <jing.yangyang@....com.cn>
---
 tools/testing/selftests/vm/split_huge_page_test.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/vm/split_huge_page_test.c b/tools/testing/selftests/vm/split_huge_page_test.c
index 1af16d2..54bf57f 100644
--- a/tools/testing/selftests/vm/split_huge_page_test.c
+++ b/tools/testing/selftests/vm/split_huge_page_test.c
@@ -341,7 +341,7 @@ void split_file_backed_thp(void)
 	}
 
 	/* write something to the file, so a file-backed THP can be allocated */
-	num_written = write(fd, tmpfs_loc, sizeof(tmpfs_loc));
+	num_written = write(fd, tmpfs_loc, sizeof(*tmpfs_loc));
 	close(fd);
 
 	if (num_written < 1) {
-- 
1.8.3.1