tree: https://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs.git work.mount-syscalls head: f1b5618e013af28b3c78daf424436a79674423c0 commit: a07b20004793d8926f78d63eb5980559f7813404 [1/10] vfs: syscall: Add open_tree(2) to reference or clone a mount reproduce: # apt-get install sparse git checkout a07b20004793d8926f78d63eb5980559f7813404 make ARCH=x86_64 allmodconfig make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@xxxxxxxxx> sparse warnings: (new ones prefixed by >>) fs/namespace.c:1736:22: sparse: sparse: symbol 'to_mnt_ns' was not declared. Should it be static? >> fs/namespace.c:2386:35: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected char const [noderef] <asn:1> *name @@ got f] <asn:1> *name @@ >> fs/namespace.c:2386:35: sparse: expected char const [noderef] <asn:1> *name >> fs/namespace.c:2386:35: sparse: got char const *filename vim +2386 fs/namespace.c 2352 2353 SYSCALL_DEFINE3(open_tree, int, dfd, const char *, filename, unsigned, flags) 2354 { 2355 struct file *file; 2356 struct path path; 2357 int lookup_flags = LOOKUP_AUTOMOUNT | LOOKUP_FOLLOW; 2358 bool detached = flags & OPEN_TREE_CLONE; 2359 int error; 2360 int fd; 2361 2362 BUILD_BUG_ON(OPEN_TREE_CLOEXEC != O_CLOEXEC); 2363 2364 if (flags & ~(AT_EMPTY_PATH | AT_NO_AUTOMOUNT | AT_RECURSIVE | 2365 AT_SYMLINK_NOFOLLOW | OPEN_TREE_CLONE | 2366 OPEN_TREE_CLOEXEC)) 2367 return -EINVAL; 2368 2369 if ((flags & (AT_RECURSIVE | OPEN_TREE_CLONE)) == AT_RECURSIVE) 2370 return -EINVAL; 2371 2372 if (flags & AT_NO_AUTOMOUNT) 2373 lookup_flags &= ~LOOKUP_AUTOMOUNT; 2374 if (flags & AT_SYMLINK_NOFOLLOW) 2375 lookup_flags &= ~LOOKUP_FOLLOW; 2376 if (flags & AT_EMPTY_PATH) 2377 lookup_flags |= LOOKUP_EMPTY; 2378 2379 if (detached && !may_mount()) 2380 return -EPERM; 2381 2382 fd = get_unused_fd_flags(flags & O_CLOEXEC); 2383 if (fd < 0) 2384 return fd; 2385 > 2386 error = user_path_at(dfd, filename, lookup_flags, &path); 2387 if (unlikely(error)) { 2388 file = ERR_PTR(error); 2389 } else { 2390 if (detached) 2391 file = open_detached_copy(&path, flags & AT_RECURSIVE); 2392 else 2393 file = dentry_open(&path, O_PATH, current_cred()); 2394 path_put(&path); 2395 } 2396 if (IS_ERR(file)) { 2397 put_unused_fd(fd); 2398 return PTR_ERR(file); 2399 } 2400 fd_install(fd, file); 2401 return fd; 2402 } 2403 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
