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Thu, 03 Mar 2022 01:15:05 +0000 Date: Thu, 3 Mar 2022 09:15:01 +0800 From: kernel test robot To: Paul Lawrence Cc: kbuild-all@lists.01.org, GNU/Weeb Mailing List , linux-kernel@vger.kernel.org Subject: [ammarfaizi2-block:google/android/kernel/common/android-trusty-5.4 2537/6879] fs/incfs/vfs.c:1307:37: sparse: sparse: non size-preserving integer to pointer cast Message-ID: <202203030947.eI7d79Mg-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org tree: https://github.com/ammarfaizi2/linux-block google/android/kernel/common/android-trusty-5.4 head: d556bac5a4d65c759ce3c5a7529aef568f05f650 commit: 383f53ee186a22c3d04cc6809e3b5e13bc2b571d [2537/6879] ANDROID: Incremental fs: Remove unneeded compatibility typedef config: i386-randconfig-s001-20211124 (https://download.01.org/0day-ci/archive/20220303/202203030947.eI7d79Mg-lkp@intel.com/config) 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/ammarfaizi2/linux-block/commit/383f53ee186a22c3d04cc6809e3b5e13bc2b571d git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block git fetch --no-tags ammarfaizi2-block google/android/kernel/common/android-trusty-5.4 git checkout 383f53ee186a22c3d04cc6809e3b5e13bc2b571d # 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=i386 SHELL=/bin/bash fs/incfs/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot sparse warnings: (new ones prefixed by >>) >> fs/incfs/vfs.c:1307:37: sparse: sparse: non size-preserving integer to pointer cast fs/incfs/vfs.c:2054:23: sparse: sparse: cast truncates bits from constant value (5346434e49 becomes 46434e49) vim +1307 fs/incfs/vfs.c 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1138 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1139 static long ioctl_create_file(struct mount_info *mi, 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1140 struct incfs_new_file_args __user *usr_args) 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1141 { 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1142 struct incfs_new_file_args args; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1143 char *file_id_str = NULL; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1144 struct dentry *index_file_dentry = NULL; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1145 struct dentry *named_file_dentry = NULL; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1146 struct path parent_dir_path = {}; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1147 struct inode *index_dir_inode = NULL; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1148 __le64 size_attr_value = 0; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1149 char *file_name = NULL; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1150 char *attr_value = NULL; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1151 int error = 0; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1152 bool locked = false; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1153 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1154 if (!mi || !mi->mi_index_dir) { 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1155 error = -EFAULT; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1156 goto out; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1157 } 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1158 if (!access_ok(usr_args, sizeof(args))) { 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1159 error = -EFAULT; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1160 goto out; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1161 } 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1162 if (copy_from_user(&args, usr_args, sizeof(args)) > 0) { 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1163 error = -EFAULT; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1164 goto out; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1165 } 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1166 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1167 file_name = strndup_user(u64_to_user_ptr(args.file_name), PATH_MAX); 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1168 if (IS_ERR(file_name)) { 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1169 error = PTR_ERR(file_name); 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1170 file_name = NULL; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1171 goto out; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1172 } 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1173 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1174 error = validate_name(file_name); 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1175 if (error) 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1176 goto out; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1177 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1178 file_id_str = file_id_to_str(args.file_id); 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1179 if (!file_id_str) { 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1180 error = -ENOMEM; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1181 goto out; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1182 } 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1183 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1184 error = mutex_lock_interruptible(&mi->mi_dir_struct_mutex); 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1185 if (error) 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1186 goto out; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1187 locked = true; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1188 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1189 /* Find a directory to put the file into. */ 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1190 error = dir_relative_path_resolve(mi, 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1191 u64_to_user_ptr(args.directory_path), 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1192 &parent_dir_path); 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1193 if (error) 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1194 goto out; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1195 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1196 if (parent_dir_path.dentry == mi->mi_index_dir) { 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1197 /* Can't create a file directly inside .index */ 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1198 error = -EBUSY; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1199 goto out; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1200 } 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1201 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1202 /* Look up a dentry in the parent dir. It should be negative. */ 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1203 named_file_dentry = incfs_lookup_dentry(parent_dir_path.dentry, 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1204 file_name); 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1205 if (!named_file_dentry) { 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1206 error = -EFAULT; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1207 goto out; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1208 } 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1209 if (IS_ERR(named_file_dentry)) { 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1210 error = PTR_ERR(named_file_dentry); 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1211 named_file_dentry = NULL; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1212 goto out; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1213 } 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1214 if (d_really_is_positive(named_file_dentry)) { 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1215 /* File with this path already exists. */ 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1216 error = -EEXIST; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1217 goto out; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1218 } 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1219 /* Look up a dentry in the .index dir. It should be negative. */ 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1220 index_file_dentry = incfs_lookup_dentry(mi->mi_index_dir, file_id_str); 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1221 if (!index_file_dentry) { 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1222 error = -EFAULT; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1223 goto out; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1224 } 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1225 if (IS_ERR(index_file_dentry)) { 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1226 error = PTR_ERR(index_file_dentry); 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1227 index_file_dentry = NULL; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1228 goto out; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1229 } 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1230 if (d_really_is_positive(index_file_dentry)) { 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1231 /* File with this ID already exists in index. */ 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1232 error = -EEXIST; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1233 goto out; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1234 } 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1235 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1236 /* Creating a file in the .index dir. */ 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1237 index_dir_inode = d_inode(mi->mi_index_dir); 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1238 inode_lock_nested(index_dir_inode, I_MUTEX_PARENT); 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1239 error = vfs_create(index_dir_inode, index_file_dentry, 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1240 args.mode, true); 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1241 inode_unlock(index_dir_inode); 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1242 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1243 if (error) 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1244 goto out; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1245 if (!d_really_is_positive(index_file_dentry)) { 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1246 error = -EINVAL; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1247 goto out; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1248 } 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1249 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1250 /* Save the file's ID as an xattr for easy fetching in future. */ 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1251 error = vfs_setxattr(index_file_dentry, INCFS_XATTR_ID_NAME, 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1252 file_id_str, strlen(file_id_str), XATTR_CREATE); 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1253 if (error) { 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1254 pr_debug("incfs: vfs_setxattr err:%d\n", error); 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1255 goto delete_index_file; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1256 } 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1257 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1258 /* Save the file's size as an xattr for easy fetching in future. */ 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1259 size_attr_value = cpu_to_le64(args.size); 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1260 error = vfs_setxattr(index_file_dentry, INCFS_XATTR_SIZE_NAME, 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1261 (char *)&size_attr_value, sizeof(size_attr_value), 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1262 XATTR_CREATE); 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1263 if (error) { 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1264 pr_debug("incfs: vfs_setxattr err:%d\n", error); 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1265 goto delete_index_file; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1266 } 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1267 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1268 /* Save the file's attrubute as an xattr */ 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1269 if (args.file_attr_len && args.file_attr) { 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1270 if (args.file_attr_len > INCFS_MAX_FILE_ATTR_SIZE) { 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1271 error = -E2BIG; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1272 goto delete_index_file; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1273 } 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1274 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1275 attr_value = kmalloc(args.file_attr_len, GFP_NOFS); 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1276 if (!attr_value) { 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1277 error = -ENOMEM; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1278 goto delete_index_file; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1279 } 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1280 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1281 if (!access_ok(u64_to_user_ptr(args.file_attr), 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1282 args.file_attr_len)) { 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1283 error = -EFAULT; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1284 goto delete_index_file; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1285 } 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1286 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1287 if (copy_from_user(attr_value, 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1288 u64_to_user_ptr(args.file_attr), 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1289 args.file_attr_len) > 0) { 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1290 error = -EFAULT; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1291 goto delete_index_file; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1292 } 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1293 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1294 error = vfs_setxattr(index_file_dentry, 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1295 INCFS_XATTR_METADATA_NAME, 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1296 attr_value, args.file_attr_len, 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1297 XATTR_CREATE); 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1298 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1299 if (error) 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1300 goto delete_index_file; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1301 } 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1302 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1303 /* Initializing a newly created file. */ 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1304 error = init_new_file(mi, index_file_dentry, &args.file_id, args.size, 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1305 range(attr_value, args.file_attr_len), 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1306 (struct incfs_file_signature_info __user *) 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 @1307 args.signature_info); 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1308 if (error) 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1309 goto delete_index_file; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1310 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1311 /* Linking a file with it's real name from the requested dir. */ 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1312 error = incfs_link(index_file_dentry, named_file_dentry); 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1313 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1314 if (!error) 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1315 goto out; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1316 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1317 delete_index_file: 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1318 incfs_unlink(index_file_dentry); 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1319 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1320 out: 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1321 if (error) 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1322 pr_debug("incfs: %s err:%d\n", __func__, error); 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1323 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1324 kfree(file_id_str); 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1325 kfree(file_name); 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1326 kfree(attr_value); 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1327 dput(named_file_dentry); 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1328 dput(index_file_dentry); 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1329 path_put(&parent_dir_path); 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1330 if (locked) 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1331 mutex_unlock(&mi->mi_dir_struct_mutex); 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1332 return error; 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1333 } 1be052b20ba04b6 Eugene Zemtsov 2019-11-18 1334 :::::: The code at line 1307 was first introduced by commit :::::: 1be052b20ba04b635cf87bcff80de5314697953e ANDROID: Initial commit of Incremental FS :::::: TO: Eugene Zemtsov :::::: CC: Paul Lawrence --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org