1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index 33d877c65ced..8328e7059205 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -4105,7 +4105,7 @@ drm_property_create_blob(struct drm_device *dev, size_t length,
         struct drm_property_blob *blob;
         int ret;
 
-        if (!length)
+        if (!length || length > ULONG_MAX - sizeof(struct drm_property_blob))
                 return ERR_PTR(-EINVAL);
 
         blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
@@ -4454,7 +4454,7 @@ int drm_mode_createblob_ioctl(struct drm_device *dev,
          * not associated with any file_priv. */
         mutex_lock(&dev->mode_config.blob_lock);
         out_resp->blob_id = blob->base.id;
-        list_add_tail(&file_priv->blobs, &blob->head_file);
+        list_add_tail(&blob->head_file, &file_priv->blobs);
         mutex_unlock(&dev->mode_config.blob_lock);
 
         return 0;