Hi Robin, First bad commit (maybe != root cause):
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: dea8dcf2a9fa8cc540136a6cd885c3beece16ec3 commit: b4ceb4a5359ed1c9ba4a20acf3a70d4bbead3248 iommu: Tidy up Kconfig for SoC IOMMUs date: 6 months ago config: csky-randconfig-s032-20201227 (attached as .config) compiler: csky-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.3-184-g1b896707-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b4ceb4a5359ed1c9ba4a20acf3a70d4bbead3248 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout b4ceb4a5359ed1c9ba4a20acf3a70d4bbead3248 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=csky If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <[email protected]> "sparse warnings: (new ones prefixed by >>)" >> samples/vfio-mdev/mbochs.c:1270:21: sparse: sparse: incorrect type in >> argument 1 (different address spaces) @@ expected void const *addr @@ >> got unsigned int const [noderef] __user *__gu_ptr @@ samples/vfio-mdev/mbochs.c:1270:21: sparse: expected void const *addr samples/vfio-mdev/mbochs.c:1270:21: sparse: got unsigned int const [noderef] __user *__gu_ptr samples/vfio-mdev/mbochs.c:1346:1: sparse: sparse: symbol 'mdev_type_attr_name' was not declared. Should it be static? samples/vfio-mdev/mbochs.c:1356:1: sparse: sparse: symbol 'mdev_type_attr_description' was not declared. Should it be static? samples/vfio-mdev/mbochs.c:1366:1: sparse: sparse: symbol 'mdev_type_attr_available_instances' was not declared. Should it be static? samples/vfio-mdev/mbochs.c:1373:1: sparse: sparse: symbol 'mdev_type_attr_device_api' was not declared. Should it be static? vim +1270 samples/vfio-mdev/mbochs.c a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1166 a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1167 static long mbochs_ioctl(struct mdev_device *mdev, unsigned int cmd, a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1168 unsigned long arg) a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1169 { a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1170 int ret = 0; 104c7405a64d937 Gerd Hoffmann 2018-09-21 1171 unsigned long minsz, outsz; a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1172 a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1173 switch (cmd) { a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1174 case VFIO_DEVICE_GET_INFO: a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1175 { a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1176 struct vfio_device_info info; a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1177 a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1178 minsz = offsetofend(struct vfio_device_info, num_irqs); a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1179 a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1180 if (copy_from_user(&info, (void __user *)arg, minsz)) a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1181 return -EFAULT; a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1182 a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1183 if (info.argsz < minsz) a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1184 return -EINVAL; a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1185 a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1186 ret = mbochs_get_device_info(mdev, &info); a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1187 if (ret) a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1188 return ret; a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1189 a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1190 if (copy_to_user((void __user *)arg, &info, minsz)) a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1191 return -EFAULT; a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1192 a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1193 return 0; a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1194 } a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1195 case VFIO_DEVICE_GET_REGION_INFO: a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1196 { 104c7405a64d937 Gerd Hoffmann 2018-09-21 1197 struct vfio_region_info_ext info; a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1198 104c7405a64d937 Gerd Hoffmann 2018-09-21 1199 minsz = offsetofend(typeof(info), base.offset); a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1200 a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1201 if (copy_from_user(&info, (void __user *)arg, minsz)) a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1202 return -EFAULT; a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1203 104c7405a64d937 Gerd Hoffmann 2018-09-21 1204 outsz = info.base.argsz; 104c7405a64d937 Gerd Hoffmann 2018-09-21 1205 if (outsz < minsz) 104c7405a64d937 Gerd Hoffmann 2018-09-21 1206 return -EINVAL; 104c7405a64d937 Gerd Hoffmann 2018-09-21 1207 if (outsz > sizeof(info)) a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1208 return -EINVAL; a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1209 104c7405a64d937 Gerd Hoffmann 2018-09-21 1210 ret = mbochs_get_region_info(mdev, &info); a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1211 if (ret) a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1212 return ret; a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1213 104c7405a64d937 Gerd Hoffmann 2018-09-21 1214 if (copy_to_user((void __user *)arg, &info, outsz)) a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1215 return -EFAULT; a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1216 a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1217 return 0; a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1218 } a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1219 a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1220 case VFIO_DEVICE_GET_IRQ_INFO: a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1221 { a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1222 struct vfio_irq_info info; a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1223 a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1224 minsz = offsetofend(struct vfio_irq_info, count); a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1225 a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1226 if (copy_from_user(&info, (void __user *)arg, minsz)) a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1227 return -EFAULT; a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1228 a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1229 if ((info.argsz < minsz) || 104c7405a64d937 Gerd Hoffmann 2018-09-21 1230 (info.index >= VFIO_PCI_NUM_IRQS)) a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1231 return -EINVAL; a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1232 a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1233 ret = mbochs_get_irq_info(mdev, &info); a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1234 if (ret) a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1235 return ret; a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1236 a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1237 if (copy_to_user((void __user *)arg, &info, minsz)) a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1238 return -EFAULT; a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1239 a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1240 return 0; a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1241 } a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1242 a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1243 case VFIO_DEVICE_QUERY_GFX_PLANE: a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1244 { a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1245 struct vfio_device_gfx_plane_info plane; a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1246 a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1247 minsz = offsetofend(struct vfio_device_gfx_plane_info, a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1248 region_index); a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1249 a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1250 if (copy_from_user(&plane, (void __user *)arg, minsz)) a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1251 return -EFAULT; a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1252 a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1253 if (plane.argsz < minsz) a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1254 return -EINVAL; a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1255 a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1256 ret = mbochs_query_gfx_plane(mdev, &plane); a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1257 if (ret) a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1258 return ret; a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1259 a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1260 if (copy_to_user((void __user *)arg, &plane, minsz)) a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1261 return -EFAULT; a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1262 a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1263 return 0; a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1264 } a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1265 a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1266 case VFIO_DEVICE_GET_GFX_DMABUF: a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1267 { a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1268 u32 dmabuf_id; a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1269 a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 @1270 if (get_user(dmabuf_id, (__u32 __user *)arg)) a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1271 return -EFAULT; a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1272 a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1273 return mbochs_get_gfx_dmabuf(mdev, dmabuf_id); a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1274 } a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1275 a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1276 case VFIO_DEVICE_SET_IRQS: a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1277 return -EINVAL; a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1278 a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1279 case VFIO_DEVICE_RESET: a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1280 return mbochs_reset(mdev); a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1281 } a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1282 return -ENOTTY; a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1283 } a5e6e6505f38f7b Gerd Hoffmann 2018-05-11 1284 :::::: The code at line 1270 was first introduced by commit :::::: a5e6e6505f38f7bce1d3576503a2bffff3fa888c sample: vfio bochs vbe display (host device for bochs-drm) :::::: TO: Gerd Hoffmann <[email protected]> :::::: CC: Alex Williamson <[email protected]> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/[email protected]
.config.gz
Description: application/gzip
