On 5/13/20 2:42 AM, Dan Carpenter wrote:
If the allocation fails, then this should return -ENOMEM instead of
success.
Fixes: a149d2eb654b ("mm/hmm/test: add selftest driver for HMM")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
---
lib/test_hmm.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/lib/test_hmm.c b/lib/test_hmm.c
index 00bca6116f930..b4d9434e49e72 100644
--- a/lib/test_hmm.c
+++ b/lib/test_hmm.c
@@ -1119,8 +1119,10 @@ static int __init hmm_dmirror_init(void)
* make the code here simpler (i.e., we need a struct page for it).
*/
dmirror_zero_page = alloc_page(GFP_HIGHUSER | __GFP_ZERO);
- if (!dmirror_zero_page)
+ if (!dmirror_zero_page) {
+ ret = -ENOMEM;
goto err_chrdev;
+ }
pr_info("HMM test module loaded. This is only for testing HMM.\n");
return 0;
Thanks for fixing this. It looks like Wei Yongjun beat you to it
and Jason Gunthorpe has applied it to the hmm tree.
https://lore.kernel.org/linux-mm/20200512195932.GB9154@xxxxxxxx/
