The allocated memory should be freed on return.
Signed-off-by: Feng Jiang <jiangfeng@xxxxxxxxxx>
Suggested-by: Ming Xie <xieming@xxxxxxxxxx>
---
tools/testing/selftests/mm/cow.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/tools/testing/selftests/mm/cow.c b/tools/testing/selftests/mm/cow.c
index 0eb2e8180aa5..c0dd2dfca51b 100644
--- a/tools/testing/selftests/mm/cow.c
+++ b/tools/testing/selftests/mm/cow.c
@@ -162,6 +162,10 @@ static int child_memcmp_fn(char *mem, size_t size,
{
char *old = malloc(size);
char buf;
+ int ret;
+
+ if (!old)
+ return -ENOMEM;
/* Backup the original content. */
memcpy(old, mem, size);
@@ -172,7 +176,10 @@ static int child_memcmp_fn(char *mem, size_t size,
;
/* See if we still read the old values. */
- return memcmp(old, mem, size);
+ ret = memcmp(old, mem, size);
+ free(old);
+
+ return ret;
}
static int child_vmsplice_memcmp_fn(char *mem, size_t size,
--
2.39.2
