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

From: Shuah Khan
Date: Tue Aug 24 2021 - 10:40:38 EST


On 8/19/21 9:24 PM, CGEL wrote:
From: jing yangyang <jing.yangyang@xxxxxxxxxx>

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@xxxxxxxxxx>
Signed-off-by: jing yangyang <jing.yangyang@xxxxxxxxxx>
---
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) {


We can't accept this patch. The from and Signed-off-by don't match.

thanks,
-- Shuah