On Sat, Nov 05, 2022 at 08:07:24AM +0800, Baolu Lu wrote:
> If you fix the issue, kindly add following tag where applicable
> | Reported-by: kernel test robot <lkp@xxxxxxxxx>
>
> sparse warnings: (new ones prefixed by >>)
> >> drivers/iommu/iommufd/vfio_compat.c:294:17: sparse: sparse: cast removes
> address space '__user' of expression
>
> vim +/__user +294 drivers/iommu/iommufd/vfio_compat.c
>
> 288
> 289 static int iommufd_fill_cap_iova(struct iommufd_ioas *ioas,
> 290 struct vfio_info_cap_header __user *cur,
> 291 size_t avail)
> 292 {
> 293 struct vfio_iommu_type1_info_cap_iova_range __user *ucap_iovas =
> > 294 container_of(cur,
> 295 struct vfio_iommu_type1_info_cap_iova_range __user,
> 296 header);
I think this is correct as-written. Sparse is flagging the casting
inside container_of. I don't think ti is worth trying to fix
Jason
