Miklos Szeredi 27c1936af5 ovl: allow upperdir inside lowerdir ... commit 708fa01597fa002599756bf56a96d0de1677375c upstream. Commit 146d62e5a5 ("ovl: detect overlapping layers") made sure we don't have overlapping layers, but it also broke the arguably valid use case of mount -olowerdir=/,upperdir=/subdir,.. where upperdir overlaps lowerdir on the same filesystem. This has been causing regressions. Revert the check, but only for the specific case where upperdir and/or workdir are subdirectories of lowerdir. Any other overlap (e.g. lowerdir is subdirectory of upperdir, etc) case is crazy, so leave the check in place for those. Overlaps are detected at lookup time too, so reverting the mount time check should be safe. Fixes: 146d62e5a5 ("ovl: detect overlapping layers") Cc: <stable@vger.kernel.org> # v5.2 Signed-off-by: Miklos Szeredi <mszeredi@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2021-05-07 11:04:33 +02:00
..
9p	fs: 9p: add generic splice_write file operation	2020-12-01 21:40:47 +01:00
adfs
affs	fs/affs: release old buffer head on error path	2021-03-04 11:38:37 +01:00
afs	afs: Stop listxattr() from listing "afs.*" attributes	2021-03-25 09:04:07 +01:00
autofs
befs
bfs	bfs: don't use WARNING: string when it's just info.	2021-01-06 14:56:52 +01:00
btrfs	btrfs: fix sleep while in non-sleep context during qgroup removal	2021-03-30 14:31:53 +02:00
cachefiles	fs/cachefiles: Remove wait_bit_key layout dependency	2021-03-30 14:32:07 +02:00
ceph	ceph: fix flush_snap logic after putting caps	2021-03-04 11:38:08 +01:00
cifs	cifs: Silently ignore unknown oplock break handle	2021-04-10 13:36:10 +02:00
coda
configfs	configfs: fix a use-after-free in __configfs_open_file	2021-03-17 17:06:34 +01:00
cramfs
crypto	fscrypt: add fscrypt_is_nokey_name()	2020-12-26 16:02:43 +01:00
debugfs	debugfs: do not attempt to create a new file before the filesystem is initalized	2021-03-04 11:37:17 +01:00
devpts
dlm
ecryptfs
efivarfs
efs
erofs	erofs: fix shift-out-of-bounds of blkszbits	2021-03-07 12:34:05 +01:00
exfat	exfat: fix shift-out-of-bounds in exfat_fill_super()	2021-03-04 11:38:41 +01:00
exportfs
ext2
ext4	ext4: do not iput inode under running transaction in ext4_rename()	2021-04-07 15:00:06 +02:00
f2fs	f2fs: fix to set/clear I_LINKABLE under i_lock	2021-03-07 12:34:12 +01:00
fat
freevxfs
fscache
fuse	virtiofs: Fail dax mount if device does not support it	2021-04-07 15:00:03 +02:00
gfs2	gfs2: report "already frozen/thawed" errors	2021-04-16 11:43:20 +02:00
hfs
hfsplus
hostfs	hostfs: fix memory handling in follow_link()	2021-04-14 08:42:06 +02:00
hpfs
hugetlbfs	mm: hugetlbfs: fix cannot migrate the fallocated HugeTLB page	2021-02-10 09:29:20 +01:00
iomap	iomap: Fix negative assignment to unsigned sis->pages in iomap_swapfile_activate	2021-04-07 15:00:04 +02:00
isofs	isofs: release buffer head before return	2021-03-04 11:38:00 +01:00
jbd2
jffs2	jffs2: fix use after free in jffs2_sum_write_data()	2021-03-04 11:37:51 +01:00
jfs	JFS: more checks for invalid superblock	2021-03-07 12:34:04 +01:00
kernfs	kernfs: wire up ->splice_read and ->splice_write	2021-01-27 11:55:29 +01:00
lockd	lockd: don't use interval-based rebinding over TCP	2020-12-30 11:53:30 +01:00
minix
nfs	nfs: we don't support removing system.nfs4_acl	2021-03-30 14:31:52 +02:00
nfs_common	nfs_common: need lock during iterate through the list	2020-12-30 11:53:45 +01:00
nfsd	NFSD: fix error handling in NFSv4.0 callbacks	2021-04-07 15:00:05 +02:00
nilfs2	nilfs2: make splice write available again	2021-02-13 13:55:16 +01:00
nls
notify	fanotify: Fix sys_fanotify_mark() on native x86-32	2021-01-17 14:16:59 +01:00
ntfs	ntfs: check for valid standard information attribute	2021-02-26 10:13:00 +01:00
ocfs2	ocfs2: fix deadlock between setattr and dio_end_io_write	2021-04-14 08:41:58 +02:00
omfs
openpromfs
orangefs
overlayfs	ovl: allow upperdir inside lowerdir	2021-05-07 11:04:33 +02:00
proc	proc: don't allow async path resolution of /proc/thread-self components	2021-03-04 11:38:42 +01:00
pstore	pstore: Fix warning in pstore_kill_sb()	2021-03-25 09:04:08 +01:00
qnx4
qnx6
quota	quota: Fix memory leak when handling corrupted quota file	2021-03-04 11:37:53 +01:00
ramfs
reiserfs	reiserfs: update reiserfs_xattrs_initialized() condition	2021-04-07 15:00:10 +02:00
romfs
squashfs	squashfs: fix xattr id and id lookup sanity checks	2021-03-30 14:31:54 +02:00
sysfs
sysv
tracefs
ubifs	ubifs: Fix error return code in alloc_wbufs()	2021-03-04 11:37:51 +01:00
udf	udf: fix silent AED tagLocation corruption	2021-03-17 17:06:23 +01:00
ufs
unicode
vboxsf
verity
xfs	xfs: Fix assert failure in xfs_setattr_size()	2021-03-07 12:34:05 +01:00
zonefs	zonefs: fix to update .i_wr_refcnt correctly in zonefs_open_zone()	2021-03-25 09:04:05 +01:00
aio.c
anon_inodes.c
attr.c
bad_inode.c
binfmt_aout.c
binfmt_elf_fdpic.c
binfmt_elf.c
binfmt_em86.c
binfmt_flat.c
binfmt_misc.c	binfmt_misc: fix possible deadlock in bm_register_write	2021-03-17 17:06:35 +01:00
binfmt_script.c
block_dev.c	block: don't ignore REQ_NOWAIT for direct IO	2021-04-16 11:43:21 +02:00
buffer.c
char_dev.c
compat_binfmt_elf.c
coredump.c	coredump: fix core_pattern parse error	2020-12-06 10:19:07 -08:00
d_path.c
dax.c	mm: provide a saner PTE walking API for modules	2021-02-26 10:13:01 +01:00
dcache.c
dcookies.c
direct-io.c	fs: direct-io: fix missing sdio->boundary	2021-04-14 08:41:58 +02:00
drop_caches.c
eventfd.c
eventpoll.c	kcmp: Support selection of SYS_kcmp without CHECKPOINT_RESTORE	2021-03-04 11:38:41 +01:00
exec.c	exec: Transform exec_update_mutex into a rw_semaphore	2021-01-09 13:46:24 +01:00
fcntl.c	fcntl: Fix potential deadlock in send_sig{io, urg}()	2021-01-06 14:56:53 +01:00
fhandle.c
file_table.c
file.c	kernel/io_uring: cancel io_uring before task works	2021-01-30 13:55:18 +01:00
filesystems.c
fs_context.c
fs_parser.c
fs_pin.c
fs_struct.c
fs_types.c
fs-writeback.c	fs: fix lazytime expiration handling in __writeback_single_inode()	2021-01-27 11:54:53 +01:00
fsopen.c
init.c
inode.c	fs: Handle I_DONTCACHE in iput_final() instead of generic_drop_inode()	2020-12-30 11:53:49 +01:00
internal.h
io_uring.c	io_uring: don't mark S_ISBLK async work as unbounded	2021-04-16 11:43:21 +02:00
io-wq.c	io_uring: always batch cancel in *cancel_files()	2021-02-13 13:54:56 +01:00
io-wq.h	io_uring: always batch cancel in *cancel_files()	2021-02-13 13:54:56 +01:00
ioctl.c
Kconfig	tmpfs: disallow CONFIG_TMPFS_INODE64 on alpha	2021-02-17 11:02:21 +01:00
Kconfig.binfmt
kernel_read_file.c
libfs.c
locks.c	Revert "nfsd4: a client's own opens needn't prevent delegations"	2021-03-20 10:43:44 +01:00
Makefile
mbcache.c
mount.h
mpage.c
namei.c	LOOKUP_MOUNTPOINT: we are cleaning "jumped" flag too late	2021-04-14 08:41:58 +02:00
namespace.c	umount(2): move the flag validity checks first	2021-01-19 18:27:32 +01:00
no-block.c
nsfs.c
open.c	openat2: reject RESOLVE_BENEATH|RESOLVE_IN_ROOT	2020-12-30 11:54:24 +01:00
pipe.c	fs/pipe: allow sendfile() to pipe again	2021-01-27 11:55:29 +01:00
pnode.c
pnode.h	mount: fix mounting of detached mounts onto targets that reside on shared mounts	2021-03-17 17:06:13 +01:00
posix_acl.c
proc_namespace.c	proc mountinfo: make splice available again	2020-12-30 11:54:02 +01:00
read_write.c
readdir.c	readdir: make sure to verify directory entry for legacy interfaces too	2021-04-21 13:00:54 +02:00
remap_range.c
select.c	kernel, fs: Introduce and use set_restart_fn() and arch_set_restart_data()	2021-03-25 09:04:16 +01:00
seq_file.c
signalfd.c
splice.c
stack.c
stat.c
statfs.c
super.c
sync.c
timerfd.c
userfaultfd.c
utimes.c
xattr.c