Messages in this thread Patch in this message | | | Date | Fri, 20 Jan 2012 10:55:30 +0300 | From | Dan Carpenter <> | Subject | [patch] NVMe: handle allocation failure in nvme_map_user_pages() |
| |
We should return here and avoid a NULL dereference.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
diff --git a/drivers/block/nvme.c b/drivers/block/nvme.c index f4996b0..d826726 100644 --- a/drivers/block/nvme.c +++ b/drivers/block/nvme.c @@ -1042,6 +1042,8 @@ static struct nvme_iod *nvme_map_user_pages(struct nvme_dev *dev, int write, offset = offset_in_page(addr); count = DIV_ROUND_UP(offset + length, PAGE_SIZE); pages = kcalloc(count, sizeof(*pages), GFP_KERNEL); + if (!pages) + return ERR_PTR(-ENOMEM); err = get_user_pages_fast(addr, count, 1, pages); if (err < count) {
| |