The allocated memory should be freed on return.
Signed-off-by: Feng Jiang jiangfeng@kylinos.cn Suggested-by: Ming Xie xieming@kylinos.cn --- 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,