drm/radeon/kms: Forbid creation of framebuffer with no valid GEM object
This will avoid oops if at later point the fb is use. Trying to create
a framebuffer with no valid GEM object is bogus and should be forbidden
as this patch does.
Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@linux.ie>
diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c
index 49f3c69..f899320 100644
--- a/drivers/gpu/drm/radeon/radeon_display.c
+++ b/drivers/gpu/drm/radeon/radeon_display.c
@@ -715,7 +715,11 @@
struct drm_gem_object *obj;
obj = drm_gem_object_lookup(dev, file_priv, mode_cmd->handle);
-
+ if (obj == NULL) {
+ dev_err(&dev->pdev->dev, "No GEM object associated to handle 0x%08X, "
+ "can't create framebuffer\n", mode_cmd->handle);
+ return NULL;
+ }
return radeon_framebuffer_create(dev, mode_cmd, obj);
}