diff options
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/hw/mlx5/cq.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/infiniband/hw/mlx5/cq.c b/drivers/infiniband/hw/mlx5/cq.c index 50b03a8067e5..b1705ce6eb88 100644 --- a/drivers/infiniband/hw/mlx5/cq.c +++ b/drivers/infiniband/hw/mlx5/cq.c @@ -877,8 +877,12 @@ static int resize_user(struct mlx5_ib_dev *dev, struct mlx5_ib_cq *cq, int npages; struct ib_ucontext *context = cq->buf.umem->context; - if (ib_copy_from_udata(&ucmd, udata, sizeof(ucmd))) - return -EFAULT; + err = ib_copy_from_udata(&ucmd, udata, sizeof(ucmd)); + if (err) + return err; + + if (ucmd.reserved0 || ucmd.reserved1) + return -EINVAL; umem = ib_umem_get(context, ucmd.buf_addr, entries * ucmd.cqe_size, IB_ACCESS_LOCAL_WRITE, 1); |