[intel-linux-intel-lts:5.10/yocto 10619/15089] drivers/media/v4l2-core/v4l2-compat-ioctl32.c:1357:14: sparse: sparse: incorrect type in argument 1 (different address spaces)

[intel-linux-intel-lts:5.10/yocto 10619/15089] drivers/media/v4l2-core/v4l2-compat-ioctl32.c:1357:14: sparse: sparse: incorrect type in argument 1 (different address spaces)

[kernel test robot]

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tree:   https://github.com/intel/linux-intel-lts.git 5.10/yocto
head:   33f329993aa32e5d7587399a764842b9c4b30b1b
commit: 4a13d96daeb2f402d35b53c718b83609e65d4b3d [10619/15089] v4l: subdev: Add [GS]_ROUTING ioctls and operations
config: x86_64-randconfig-s022-20210813 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.3-348-gf0e6938b-dirty
        # https://github.com/intel/linux-intel-lts/commit/4a13d96daeb2f402d35b53c718b83609e65d4b3d
        git remote add intel-linux-intel-lts https://github.com/intel/linux-intel-lts.git
        git fetch --no-tags intel-linux-intel-lts 5.10/yocto
        git checkout 4a13d96daeb2f402d35b53c718b83609e65d4b3d
        # save the attached .config to linux build tree
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=x86_64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>


sparse warnings: (new ones prefixed by >>)
   drivers/media/v4l2-core/v4l2-compat-ioctl32.c:1355:20: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct v4l2_subdev_route *routes @@     got void [noderef] __user * @@
   drivers/media/v4l2-core/v4l2-compat-ioctl32.c:1355:20: sparse:     expected struct v4l2_subdev_route *routes
   drivers/media/v4l2-core/v4l2-compat-ioctl32.c:1355:20: sparse:     got void [noderef] __user *
>> drivers/media/v4l2-core/v4l2-compat-ioctl32.c:1357:14: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const volatile [noderef] __user *ptr @@     got struct v4l2_subdev_route *routes @@
   drivers/media/v4l2-core/v4l2-compat-ioctl32.c:1357:14: sparse:     expected void const volatile [noderef] __user *ptr
   drivers/media/v4l2-core/v4l2-compat-ioctl32.c:1357:14: sparse:     got struct v4l2_subdev_route *routes
   drivers/media/v4l2-core/v4l2-compat-ioctl32.c:1593:55: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected struct v4l2_subdev_routing *kp @@     got void [noderef] __user *[addressable] new_p64 @@
   drivers/media/v4l2-core/v4l2-compat-ioctl32.c:1593:55: sparse:     expected struct v4l2_subdev_routing *kp
   drivers/media/v4l2-core/v4l2-compat-ioctl32.c:1593:55: sparse:     got void [noderef] __user *[addressable] new_p64
   drivers/media/v4l2-core/v4l2-compat-ioctl32.c:1764:55: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected struct v4l2_subdev_routing *kp @@     got void [noderef] __user *[addressable] new_p64 @@
   drivers/media/v4l2-core/v4l2-compat-ioctl32.c:1764:55: sparse:     expected struct v4l2_subdev_routing *kp
   drivers/media/v4l2-core/v4l2-compat-ioctl32.c:1764:55: sparse:     got void [noderef] __user *[addressable] new_p64

vim +1357 drivers/media/v4l2-core/v4l2-compat-ioctl32.c

  1342	
  1343	static int get_v4l2_subdev_routing(struct v4l2_subdev_routing *kp,
  1344					   struct v4l2_subdev_routing32 __user *up)
  1345	{
  1346		compat_caddr_t p;
  1347	
  1348		if (!access_ok(up, sizeof(*up)) ||
  1349		    get_user(p, &up->routes) ||
  1350		    get_user(kp->num_routes, &up->num_routes) ||
  1351		    !access_ok(up->reserved, sizeof(*up->reserved)) ||
  1352		    kp->num_routes > U32_MAX / sizeof(*kp->routes))
  1353			return -EFAULT;
  1354	
  1355		kp->routes = compat_ptr(p);
  1356	
> 1357		if (!access_ok(kp->routes,
  1358			       kp->num_routes * (u32)sizeof(*kp->routes)))
  1359			return -EFAULT;
  1360	
  1361		return 0;
  1362	}
  1363	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

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