Hi Dan, [auto build test ERROR on linus/master] [also build test ERROR on v4.13-rc5 next-20170816] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Dan-Williams/fs-xfs-introduce-S_IOMAP_SEALED/20170817-114711 config: xtensa-allmodconfig (attached as .config) compiler: xtensa-linux-gcc (GCC) 4.9.0 reproduce: wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=xtensa All errors (new ones prefixed by >>): mm/mmap.c: In function 'do_mmap': >> mm/mmap.c:1391:8: error: 'MAP_VALIDATE' undeclared (first use in this function) case MAP_VALIDATE: ^ mm/mmap.c:1391:8: note: each undeclared identifier is reported only once for each function it appears in vim +/MAP_VALIDATE +1391 mm/mmap.c 1316 1317 /* 1318 * The caller must hold down_write(¤t->mm->mmap_sem). 1319 */ 1320 unsigned long do_mmap(struct file *file, unsigned long addr, 1321 unsigned long len, unsigned long prot, 1322 unsigned long flags, vm_flags_t vm_flags, 1323 unsigned long pgoff, unsigned long *populate, 1324 struct list_head *uf) 1325 { 1326 struct mm_struct *mm = current->mm; 1327 int pkey = 0; 1328 1329 *populate = 0; 1330 1331 if (!len) 1332 return -EINVAL; 1333 1334 /* 1335 * Does the application expect PROT_READ to imply PROT_EXEC? 1336 * 1337 * (the exception is when the underlying filesystem is noexec 1338 * mounted, in which case we dont add PROT_EXEC.) 1339 */ 1340 if ((prot & PROT_READ) && (current->personality & READ_IMPLIES_EXEC)) 1341 if (!(file && path_noexec(&file->f_path))) 1342 prot |= PROT_EXEC; 1343 1344 if (!(flags & MAP_FIXED)) 1345 addr = round_hint_to_min(addr); 1346 1347 /* Careful about overflows.. */ 1348 len = PAGE_ALIGN(len); 1349 if (!len) 1350 return -ENOMEM; 1351 1352 /* offset overflow? */ 1353 if ((pgoff + (len >> PAGE_SHIFT)) < pgoff) 1354 return -EOVERFLOW; 1355 1356 /* Too many mappings? */ 1357 if (mm->map_count > sysctl_max_map_count) 1358 return -ENOMEM; 1359 1360 /* Obtain the address to map to. we verify (or select) it and ensure 1361 * that it represents a valid section of the address space. 1362 */ 1363 addr = get_unmapped_area(file, addr, len, pgoff, flags); 1364 if (offset_in_page(addr)) 1365 return addr; 1366 1367 if (prot == PROT_EXEC) { 1368 pkey = execute_only_pkey(mm); 1369 if (pkey < 0) 1370 pkey = 0; 1371 } 1372 1373 /* Do simple checking here so the lower-level routines won't have 1374 * to. we assume access permissions have been handled by the open 1375 * of the memory object, so we don't do any here. 1376 */ 1377 vm_flags |= calc_vm_prot_bits(prot, pkey) | calc_vm_flag_bits(flags) | 1378 mm->def_flags | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC; 1379 1380 if (flags & MAP_LOCKED) 1381 if (!can_do_mlock()) 1382 return -EPERM; 1383 1384 if (mlock_future_check(mm, vm_flags, len)) 1385 return -EAGAIN; 1386 1387 if (file) { 1388 struct inode *inode = file_inode(file); 1389 1390 switch (flags & MAP_TYPE) { > 1391 case MAP_VALIDATE: 1392 if (flags & ~(MAP_SUPPORTED_MASK | MAP_VALIDATE)) 1393 return -EINVAL; 1394 if (!file->f_op->fmmap) 1395 return -EOPNOTSUPP; 1396 /* fall through */ 1397 case MAP_SHARED: 1398 if ((prot&PROT_WRITE) && !(file->f_mode&FMODE_WRITE)) 1399 return -EACCES; 1400 1401 /* 1402 * Make sure we don't allow writing to an append-only 1403 * file.. 1404 */ 1405 if (IS_APPEND(inode) && (file->f_mode & FMODE_WRITE)) 1406 return -EACCES; 1407 1408 /* 1409 * Make sure there are no mandatory locks on the file. 1410 */ 1411 if (locks_verify_locked(file)) 1412 return -EAGAIN; 1413 1414 vm_flags |= VM_SHARED | VM_MAYSHARE; 1415 if (!(file->f_mode & FMODE_WRITE)) 1416 vm_flags &= ~(VM_MAYWRITE | VM_SHARED); 1417 1418 /* fall through */ 1419 case MAP_PRIVATE: 1420 if (!(file->f_mode & FMODE_READ)) 1421 return -EACCES; 1422 if (path_noexec(&file->f_path)) { 1423 if (vm_flags & VM_EXEC) 1424 return -EPERM; 1425 vm_flags &= ~VM_MAYEXEC; 1426 } 1427 1428 if (!file->f_op->mmap) 1429 return -ENODEV; 1430 if (vm_flags & (VM_GROWSDOWN|VM_GROWSUP)) 1431 return -EINVAL; 1432 break; 1433 1434 default: 1435 return -EINVAL; 1436 } 1437 } else { 1438 switch (flags & MAP_TYPE) { 1439 case MAP_SHARED: 1440 if (vm_flags & (VM_GROWSDOWN|VM_GROWSUP)) 1441 return -EINVAL; 1442 /* 1443 * Ignore pgoff. 1444 */ 1445 pgoff = 0; 1446 vm_flags |= VM_SHARED | VM_MAYSHARE; 1447 break; 1448 case MAP_PRIVATE: 1449 /* 1450 * Set pgoff according to addr for anon_vma. 1451 */ 1452 pgoff = addr >> PAGE_SHIFT; 1453 break; 1454 default: 1455 return -EINVAL; 1456 } 1457 } 1458 1459 /* 1460 * Set 'VM_NORESERVE' if we should not account for the 1461 * memory use of this mapping. 1462 */ 1463 if (flags & MAP_NORESERVE) { 1464 /* We honor MAP_NORESERVE if allowed to overcommit */ 1465 if (sysctl_overcommit_memory != OVERCOMMIT_NEVER) 1466 vm_flags |= VM_NORESERVE; 1467 1468 /* hugetlb applies strict overcommit unless MAP_NORESERVE */ 1469 if (file && is_file_hugepages(file)) 1470 vm_flags |= VM_NORESERVE; 1471 } 1472 1473 if ((flags & MAP_VALIDATE) == MAP_VALIDATE) 1474 flags &= MAP_SUPPORTED_MASK; 1475 else 1476 flags = 0; 1477 1478 addr = mmap_region(file, addr, len, vm_flags, pgoff, uf, flags); 1479 if (!IS_ERR_VALUE(addr) && 1480 ((vm_flags & VM_LOCKED) || 1481 (flags & (MAP_POPULATE | MAP_NONBLOCK)) == MAP_POPULATE)) 1482 *populate = len; 1483 return addr; 1484 } 1485 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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