mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-03 07:38:10 +00:00
drm/virtio: Check whether transferred 2D BO is shmem
commit e473216b42
upstream.
Transferred 2D BO always must be a shmem BO. Add check for that to prevent
NULL dereference if userspace passes a VRAM BO.
Cc: stable@vger.kernel.org
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20220630200726.1884320-3-dmitry.osipenko@collabora.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
parent
5653bd0200
commit
989164305b
1 changed files with 1 additions and 1 deletions
|
@ -595,7 +595,7 @@ void virtio_gpu_cmd_transfer_to_host_2d(struct virtio_gpu_device *vgdev,
|
|||
bool use_dma_api = !virtio_has_dma_quirk(vgdev->vdev);
|
||||
struct virtio_gpu_object_shmem *shmem = to_virtio_gpu_shmem(bo);
|
||||
|
||||
if (use_dma_api)
|
||||
if (virtio_gpu_is_shmem(bo) && use_dma_api)
|
||||
dma_sync_sgtable_for_device(vgdev->vdev->dev.parent,
|
||||
shmem->pages, DMA_TO_DEVICE);
|
||||
|
||||
|
|
Loading…
Reference in a new issue