[PATCH] drm/atomic: Reject properties not part of the object.

[Maarten Lankhorst]

The legacy setprop ioctl doesn't attempt to set properties
that are not enumerated on the object. The atomic ioctl does,
fix this by validating first.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
---
 drivers/gpu/drm/drm_atomic.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index 5cb2e22d5d55..a5126e5c05ee 100644
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -1609,7 +1609,7 @@ int drm_mode_atomic_ioctl(struct drm_device *dev,
 	struct drm_crtc_state *crtc_state;
 	unsigned plane_mask;
 	int ret = 0;
-	unsigned int i, j;
+	unsigned int i, j, k;
 
 	/* disallow for drivers not supporting atomic: */
 	if (!drm_core_check_feature(dev, DRIVER_ATOMIC))
@@ -1691,6 +1691,15 @@ retry:
 				goto out;
 			}
 
+			for (k = 0; k < obj->properties->count; k++)
+				if (obj->properties->properties[k]->base.id == prop_id)
+					break;
+
+			if (k == obj->properties->count) {
+				ret = -EINVAL;
+				goto out;
+			}
+
 			prop = drm_property_find(dev, prop_id);
 			if (!prop) {
 				drm_mode_object_unreference(obj);
-- 
2.7.4