tree 23873d5433199ad4c1d973ff9d29780a9d4e0d88
parent 070d0094b3f40c61ac041242e1d990e401eb6a22
author Stefano Garzarella <sgarzare@redhat.com> 1612801061 +0100
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1614854237 +0100

vdpa/mlx5: fix param validation in mlx5_vdpa_get_config()

commit dcfde1635e764fd69cc756c7780d144e288608e9 upstream.

It's legal to have 'offset + len' equal to
sizeof(struct virtio_net_config), since 'ndev->config' is a
'struct virtio_net_config', so we can safely copy its content under
this condition.

Fixes: 1a86b377aa21 ("vdpa/mlx5: Add VDPA driver for supported mlx5 devices")
Cc: stable@vger.kernel.org
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Link: https://lore.kernel.org/r/20210208161741.104939-1-sgarzare@redhat.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Acked-by: Eli Cohen <elic@nvidia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>