Hi Dave, On 12 April 2017 at 05:57, Dave Airlie <airlied at gmail.com> wrote: > +struct drm_syncobj_handle { > + __u32 handle; > + /** Flags.. only applicable for handle->fd */ > + __u32 flags; > + > + __s32 fd; > +}; I think this struct need a __u32 pad as well. Thanks Emil