1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/gpu/drm/drm_plane.c b/drivers/gpu/drm/drm_plane.c
index 2c90519576a3..22b54663b6e7 100644
--- a/drivers/gpu/drm/drm_plane.c
+++ b/drivers/gpu/drm/drm_plane.c
@@ -173,6 +173,10 @@ int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
         unsigned int format_modifier_count = 0;
         int ret;
 
+        /* plane index is used with 32bit bitmasks */
+        if (WARN_ON(config->num_total_plane >= 32))
+                return -EINVAL;
+
         ret = drm_mode_object_add(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
         if (ret)
                 return ret;