tree: https://github.com/intel/linux-intel-lts.git 5.10/yocto head: cf38367ce677bada8f362a6482c80b2d30b64d1c commit: 4a13d96daeb2f402d35b53c718b83609e65d4b3d [10619/19822] v4l: subdev: Add [GS]_ROUTING ioctls and operations config: x86_64-randconfig-s022-20211219 (https://download.01.org/0day-ci/archive/20211219/202112190424.gjKXazT5-lk...) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.4-dirty # https://github.com/intel/linux-intel-lts/commit/4a13d96daeb2f402d35b53c71... git remote add intel-lts https://github.com/intel/linux-intel-lts.git git fetch --no-tags intel-lts 5.10/yocto git checkout 4a13d96daeb2f402d35b53c718b83609e65d4b3d # save the config file to linux build tree mkdir build_dir make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/media/v4l2-core/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; 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: 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 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@lists.01.org