| Date | Wed, 27 Jun 2012 12:06:23 +0300 | From | Dan Carpenter <> | Subject | [patch -resend] NVMe: handle allocation failure in nvme_map_user_pages() |
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We should return here and avoid a NULL dereference.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> --- Originally sent on Fri, 20 Jan 2012.
diff --git a/drivers/block/nvme.c b/drivers/block/nvme.c index 38a2d06..b4d85b9 100644 --- a/drivers/block/nvme.c +++ b/drivers/block/nvme.c @@ -1037,6 +1037,8 @@ 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) {
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