tree: https://git.kernel.org/pub/scm/linux/kernel/git/josef/btrfs-next.git new-kill-btree-inode head: f2213041f761c4972696a8dabfad3c8bac9ffde2 commit: f2213041f761c4972696a8dabfad3c8bac9ffde2 [22/22] btrfs: fix send ioctl on 32bit with 64bit kernel config: i386-randconfig-x000-201739 (attached as .config) compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901 reproduce: git checkout f2213041f761c4972696a8dabfad3c8bac9ffde2 # save the attached .config to linux build tree make ARCH=i386 All errors (new ones prefixed by >>): fs/btrfs/send.c: In function 'btrfs_ioctl_send': >> fs/btrfs/send.c:6412:35: error: storage size of 'args32' isn't known struct btrfs_ioctl_send_args_32 args32; ^~~~~~ >> fs/btrfs/send.c:6425:24: error: implicit declaration of function 'compat_ptr' [-Werror=implicit-function-declaration] arg->clone_sources = compat_ptr(args32.clone_sources); ^~~~~~~~~~ fs/btrfs/send.c:6412:35: warning: unused variable 'args32' [-Wunused-variable] struct btrfs_ioctl_send_args_32 args32; ^~~~~~ cc1: some warnings being treated as errors vim +6412 fs/btrfs/send.c 6368 6369 long btrfs_ioctl_send(struct file *mnt_file, void __user *arg_, bool compat) 6370 { 6371 int ret = 0; 6372 struct btrfs_root *send_root = BTRFS_I(file_inode(mnt_file))->root; 6373 struct btrfs_fs_info *fs_info = send_root->fs_info; 6374 struct btrfs_root *clone_root; 6375 struct btrfs_ioctl_send_args *arg = NULL; 6376 struct btrfs_key key; 6377 struct send_ctx *sctx = NULL; 6378 u32 i; 6379 u64 *clone_sources_tmp = NULL; 6380 int clone_sources_to_rollback = 0; 6381 unsigned alloc_size; 6382 int sort_clone_roots = 0; 6383 int index; 6384 6385 if (!capable(CAP_SYS_ADMIN)) 6386 return -EPERM; 6387 6388 /* 6389 * The subvolume must remain read-only during send, protect against 6390 * making it RW. This also protects against deletion. 6391 */ 6392 spin_lock(&send_root->root_item_lock); 6393 send_root->send_in_progress++; 6394 spin_unlock(&send_root->root_item_lock); 6395 6396 /* 6397 * This is done when we lookup the root, it should already be complete 6398 * by the time we get here. 6399 */ 6400 WARN_ON(send_root->orphan_cleanup_state != ORPHAN_CLEANUP_DONE); 6401 6402 /* 6403 * Userspace tools do the checks and warn the user if it's 6404 * not RO. 6405 */ 6406 if (!btrfs_root_readonly(send_root)) { 6407 ret = -EPERM; 6408 goto out; 6409 } 6410 6411 if (compat) { > 6412 struct btrfs_ioctl_send_args_32 args32; 6413 ret = copy_from_user(&args32, arg_, sizeof(args32)); 6414 if (ret) { 6415 btrfs_err(fs_info, "args32 copy failed\n"); 6416 goto out; 6417 } 6418 arg = kzalloc(sizeof(*arg), GFP_KERNEL); 6419 if (!arg) { 6420 ret = -ENOMEM; 6421 goto out; 6422 } 6423 arg->send_fd = args32.send_fd; 6424 arg->clone_sources_count = args32.clone_sources_count; > 6425 arg->clone_sources = compat_ptr(args32.clone_sources); --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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