diff mbox series

[v1,1/5] drm/virtio: Correct drm_gem_shmem_get_sg_table() error handling

Message ID 20220308131725.60607-2-dmitry.osipenko@collabora.com (mailing list archive)
State New, archived
Headers show
Series Add memory shrinker to VirtIO-GPU DRM driver | expand

Commit Message

Dmitry Osipenko March 8, 2022, 1:17 p.m. UTC
drm_gem_shmem_get_sg_table() never ever returned NULL on error. Correct
the error handling to avoid crash on OOM.

Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
---
 drivers/gpu/drm/virtio/virtgpu_object.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/virtio/virtgpu_object.c b/drivers/gpu/drm/virtio/virtgpu_object.c
index f293e6ad52da..bea7806a3ae3 100644
--- a/drivers/gpu/drm/virtio/virtgpu_object.c
+++ b/drivers/gpu/drm/virtio/virtgpu_object.c
@@ -168,9 +168,11 @@  static int virtio_gpu_object_shmem_init(struct virtio_gpu_device *vgdev,
 	 * since virtio_gpu doesn't support dma-buf import from other devices.
 	 */
 	shmem->pages = drm_gem_shmem_get_sg_table(&bo->base);
-	if (!shmem->pages) {
+	ret = PTR_ERR(shmem->pages);
+	if (ret) {
 		drm_gem_shmem_unpin(&bo->base);
-		return -EINVAL;
+		shmem->pages = NULL;
+		return ret;
 	}
 
 	if (use_dma_api) {