[PATCH] drm: Reject addfb2 with undefined flag bits set

[ville.syrj...@linux.intel.com]

From: Ville Syrj?l? <ville.syrj...@linux.intel.com>

Signed-off-by: Ville Syrj?l? <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/drm_crtc.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index ef1b221..25bd64f 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -2323,6 +2323,11 @@ int drm_mode_addfb2(struct drm_device *dev,
        if (!drm_core_check_feature(dev, DRIVER_MODESET))
                return -EINVAL;

+       if (r->flags & ~DRM_MODE_FB_INTERLACED) {
+               DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
+               return -EINVAL;
+       }
+
        if ((config->min_width > r->width) || (r->width > config->max_width)) {
                DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= 
%d\n",
                          r->width, config->min_width, config->max_width);
-- 
1.7.8.6