[android-common:android16-6.12-desktop 24/24] arch/arm64/kvm/../../../virt/kvm/vfio.c:400:45: sparse: sparse: incorrect type in argument 2 (different address spaces)

[android-common:android16-6.12-desktop 24/24] arch/arm64/kvm/../../../virt/kvm/vfio.c:400:45: sparse: sparse: incorrect type in argument 2 (different address spaces)

[kernel test robot]

tree:   https://android.googlesource.com/kernel/common android16-6.12-desktop
head:   e618ac331b0929e7221e5aadc18783b4b8bc5e2e
commit: b0fccd926d2ee040ec590ca6439db237edf5c247 [24/24] ANDROID: kvm/vfio: pviommu: Add set config IOCTL
config: arm64-randconfig-r122-20250827 (https://download.01.org/0day-ci/archive/20250828/202508280010.L6xE5UXP-lkp@intel.com/config)
compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project d26ea02060b1c9db751d188b2edb0059a9eb273d)
reproduce: (https://download.01.org/0day-ci/archive/20250828/202508280010.L6xE5UXP-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202508280010.L6xE5UXP-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> arch/arm64/kvm/../../../virt/kvm/vfio.c:400:45: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void const [noderef] __user *from @@     got void * @@
   arch/arm64/kvm/../../../virt/kvm/vfio.c:400:45: sparse:     expected void const [noderef] __user *from
   arch/arm64/kvm/../../../virt/kvm/vfio.c:400:45: sparse:     got void *
>> arch/arm64/kvm/../../../virt/kvm/vfio.c:404:69: sparse: sparse: incorrect type in argument 3 (different address spaces) @@     expected void const [noderef] __user *src @@     got void * @@
   arch/arm64/kvm/../../../virt/kvm/vfio.c:404:69: sparse:     expected void const [noderef] __user *src
   arch/arm64/kvm/../../../virt/kvm/vfio.c:404:69: sparse:     got void *

vim +400 arch/arm64/kvm/../../../virt/kvm/vfio.c

   391	
   392	static long pviommufd_ioctl(struct file *filp, unsigned int ioctl,
   393				    unsigned long arg)
   394	{
   395		struct kvm_vfio_iommu_config config;
   396		__u32 usize;
   397	
   398		switch (ioctl) {
   399		case KVM_PVIOMMU_SET_CONFIG:
 > 400			if (copy_from_user(&usize, (void *)arg, sizeof(usize)))
   401				return -EFAULT;
   402			if (usize < offsetofend(struct kvm_vfio_iommu_config, __reserved))
   403				return -EINVAL;
 > 404			if (copy_struct_from_user(&config, sizeof(config), (void *)arg, usize))
   405				return -EFAULT;
   406	
   407			return kvm_vfio_pviommu_set_config(filp, &config);
   408		default:
   409			return -ENXIO;
   410		}
   411		return 0;
   412	}
   413	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki