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Chen Zhongjin 1c65d50315 ovl: fix use inode directly in rcu-walk mode 
commit 672e4268b2863d7e4978dfed29552b31c2f9bd4e upstream.

ovl_dentry_revalidate_common() can be called in rcu-walk mode.  As document
said, "in rcu-walk mode, d_parent and d_inode should not be used without
care".

Check inode here to protect access under rcu-walk mode.

Fixes: bccece1ead ("ovl: allow remote upper")
Reported-and-tested-by: syzbot+a4055c78774bbf3498bb@syzkaller.appspotmail.com
Signed-off-by: Chen Zhongjin <chenzhongjin@huawei.com>
Cc: <stable@vger.kernel.org> # v5.7
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-12-31 13:14:47 +01:00
..
9p
9p: fix a bunch of checkpatch warnings
2022-08-17 14:24:07 +02:00
adfs
…
affs
…
afs
afs: Fix lost servers_outstanding count
2022-12-31 13:14:45 +01:00
autofs
autofs: fix wait name hash calculation in autofs_wait()
2021-10-20 21:09:02 -04:00
befs
isystem: ship and use stdarg.h
2021-08-19 09:02:55 +09:00
bfs
…
btrfs
btrfs: send: avoid unaligned encoded writes when attempting to clone range
2022-12-14 11:37:16 +01:00
cachefiles
fs: add is_idmapped_mnt() helper
2022-07-02 16:41:14 +02:00
ceph
ceph: fix NULL pointer dereference for req->r_session
2022-12-02 17:41:01 +01:00
cifs
cifs: fix use-after-free caused by invalid pointer hostname
2022-12-14 11:37:18 +01:00
coda
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configfs
configfs: fix possible memory leak in configfs_create_dir()
2022-12-31 13:14:15 +01:00
cramfs
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crypto
fscrypt: fix keyring memory leak on mount failure
2022-11-10 18:15:37 +01:00
debugfs
debugfs: fix error when writing negative value to atomic_t debugfs file
2022-12-31 13:14:03 +01:00
devpts
fsnotify: fix fsnotify hooks in pseudo filesystems
2022-02-01 17:27:01 +01:00
dlm
fs: dlm: fix invalid derefence of sb_lvbptr
2022-10-29 10:12:57 +02:00
ecryptfs
fs: add is_idmapped_mnt() helper
2022-07-02 16:41:14 +02:00
efivarfs
…
efs
…
erofs
erofs: fix order >= MAX_ORDER warning due to crafted negative i_size
2022-12-08 11:28:37 +01:00
exfat
exfat: use updated exfat_chain directly during renaming
2022-07-29 17:25:30 +02:00
exportfs
exportfs: support idmapped mounts
2022-06-09 10:23:32 +02:00
ext2
ext2: Use kvmalloc() for group descriptor array
2022-10-26 12:35:51 +02:00
ext4
ext4: fix use-after-free in ext4_ext_shift_extents
2022-12-02 17:41:08 +01:00
f2fs
f2fs: avoid victim selection from previous victim section
2022-12-31 13:14:25 +01:00
fat
fat: add ratelimit to fat*_ent_bread()
2022-06-09 10:22:42 +02:00
freevxfs
…
fscache
fscache: Remove an unused static variable
2021-10-04 22:13:12 +01:00
fuse
fuse: lock inode unconditionally in fuse_fallocate()
2022-12-02 17:41:11 +01:00
gfs2
gfs2: Switch from strlcpy to strscpy
2022-11-26 09:24:51 +01:00
hfs
hfs: fix OOB Read in __hfs_brec_find
2022-12-31 13:14:40 +01:00
hfsplus
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hostfs
hostfs: support splice_write
2021-08-26 22:28:02 +02:00
hpfs
hpfs: use iomap_fiemap to implement ->fiemap
2021-07-27 11:00:36 +02:00
hugetlbfs
hugetlbfs: fix null-ptr-deref in hugetlbfs_parse_param()
2022-12-31 13:14:44 +01:00
iomap
iomap: iomap_write_failed fix
2022-06-09 10:22:55 +02:00
isofs
isofs: Fix out of bound access for corrupted isofs image
2021-11-12 15:05:50 +01:00
jbd2
jbd2: add miss release buffer head in fc_do_one_pass()
2022-10-26 12:34:28 +02:00
jffs2
jffs2: fix memory leak in jffs2_do_fill_super
2022-06-14 18:36:10 +02:00
jfs
fs: jfs: fix shift-out-of-bounds in dbDiscardAG
2022-12-31 13:14:40 +01:00
kernfs
kernfs: fix use-after-free in __kernfs_remove
2022-11-03 23:59:13 +09:00
ksmbd
ksmbd: Fix resource leak in ksmbd_session_rpc_open()
2022-12-31 13:14:31 +01:00
lockd
lockd: set other missing fields when unlocking files
2022-12-31 13:14:05 +01:00
minix
minix: fix bug when opening a file with O_DIRECT
2022-04-13 20:59:10 +02:00
netfs
netfs: fix parameter of cleanup()
2021-12-29 12:28:59 +01:00
nfs
NFSv4.x: Fail client initialisation if state manager thread can't run
2022-12-31 13:14:16 +01:00
nfs_common
nfs: Fix kerneldoc warning shown up by W=1
2021-10-04 22:02:17 +01:00
nfsd
nfsd: under NFSv4.1, fix double svc_xprt_put on rpc_create failure
2022-12-31 13:14:37 +01:00
nilfs2
nilfs2: fix shift-out-of-bounds due to too large exponent of block size
2022-12-31 13:14:40 +01:00
nls
…
notify
fsnotify: fix wrong lockdep annotations
2022-06-09 10:22:50 +02:00
ntfs
ntfs: check overflow when iterating ATTR_RECORDs
2022-11-26 09:24:52 +01:00
ntfs3
fs/ntfs3: Fix slab-out-of-bounds read in ntfs_trim_fs
2022-12-31 13:14:34 +01:00
ocfs2
ocfs2: fix memory leak in ocfs2_stack_glue_init()
2022-12-31 13:14:02 +01:00
omfs
…
openpromfs
…
orangefs
orangefs: Fix kmemleak in orangefs_{kernel,client}_debug_init()
2022-12-31 13:14:44 +01:00
overlayfs
ovl: fix use inode directly in rcu-walk mode
2022-12-31 13:14:47 +01:00
proc
mm: /proc/pid/smaps_rollup: fix no vma's null-deref
2022-10-29 10:12:58 +02:00
pstore
pstore: Make sure CONFIG_PSTORE_PMSG selects CONFIG_RT_MUTEXES
2022-12-31 13:14:45 +01:00
qnx4
qnx4: work around gcc false positive warning bug
2021-09-21 08:36:48 -07:00
qnx6
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quota
quota: Check next/prev free block number after reading from quota file
2022-10-26 12:34:21 +02:00
ramfs
…
reiserfs
reiserfs: Add missing calls to reiserfs_security_free()
2022-12-31 13:14:47 +01:00
romfs
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smbfs_common
cifs: Fix crash on unload of cifs_arc4.ko
2021-12-14 10:57:12 +01:00
squashfs
squashfs: use bvec_virt
2021-08-16 10:50:32 -06:00
sysfs
Merge tag 'sysfs_defferred_iomem_get_mapping-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core driver-core-next
2021-08-06 13:05:28 +02:00
sysv
fs: sysv: Fix sysv_nblocks() returns wrong value
2022-12-31 13:14:05 +01:00
tracefs
tracefs: Only clobber mode/uid/gid on remount if asked
2022-09-20 12:39:43 +02:00
ubifs
ubifs: rename_whiteout: correct old_dir size computing
2022-04-08 14:24:08 +02:00
udf
udf: Avoid double brelse() in udf_rename()
2022-12-31 13:14:40 +01:00
ufs
isystem: ship and use stdarg.h
2021-08-19 09:02:55 +09:00
unicode
…
vboxsf
vboxfs: fix broken legacy mount signature checking
2021-09-27 11:26:21 -07:00
verity
fs-verity: fix signed integer overflow with i_size near S64_MAX
2021-09-22 10:56:34 -07:00
xfs
fs: record I_DIRTY_TIME even if inode already has I_DIRTY_INODE
2022-10-26 12:34:27 +02:00
zonefs
zonefs: fix zone report size in __zonefs_io_error()
2022-12-02 17:41:10 +01:00
aio.c
aio: Fix incorrect usage of eventfd_signal_allowed()
2021-12-14 10:57:22 +01:00
anon_inodes.c
…
attr.c
vfs: Check the truncate maximum size in inode_newsize_ok()
2022-08-17 14:22:50 +02:00
bad_inode.c
vfs: add rcu argument to ->get_acl() callback
2021-08-18 22:08:24 +02:00
binfmt_aout.c
binfmt: a.out: Fix bogus semicolon
2021-09-05 10:15:05 -07:00
binfmt_elf_fdpic.c
coredump: Snapshot the vmas in do_coredump
2022-04-08 14:24:17 +02:00
binfmt_elf.c
fs/binfmt_elf: Fix memory leak in load_elf_binary()
2022-11-03 23:59:12 +09:00
binfmt_flat.c
binfmt_flat: do not stop relocating GOT entries prematurely on riscv
2022-06-09 10:22:26 +02:00
binfmt_misc.c
binfmt_misc: fix shift-out-of-bounds in check_special_flags
2022-12-31 13:14:39 +01:00
binfmt_script.c
…
buffer.c
mm: fs: initialize fsdata passed to write_begin/write_end interface
2022-11-26 09:24:51 +01:00
char_dev.c
chardev: fix error handling in cdev_device_add()
2022-12-31 13:14:30 +01:00
compat_binfmt_elf.c
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coredump.c
coredump: Use the vma snapshot in fill_files_note
2022-04-08 14:24:18 +02:00
d_path.c
d_path: make 'prepend()' fill up the buffer exactly on overflow
2021-09-02 10:07:29 -07:00
dax.c
fsdax: Fix infinite loop in dax_iomap_rw()
2022-09-28 11:11:56 +02:00
dcache.c
…
direct-io.c
…
drop_caches.c
fs: drop_caches: fix skipping over shadow cache inodes
2021-09-03 09:58:10 -07:00
eventfd.c
eventfd: guard wake_up in eventfd fs calls as well
2022-10-26 12:35:49 +02:00
eventpoll.c
epoll: autoremove wakers even more aggressively
2022-08-17 14:22:59 +02:00
exec.c
exec: Copy oldsighand->action under spin-lock
2022-11-03 23:59:12 +09:00
fcntl.c
Merge branch 'akpm' (patches from Andrew)
2021-09-03 10:08:28 -07:00
fhandle.c
…
file_table.c
locks: fix TOCTOU race when granting write lease
2022-10-26 12:34:58 +02:00
file.c
fs: use acquire ordering in __fget_light()
2022-12-14 11:37:15 +01:00
filesystems.c
fs: simplify get_filesystem_list / get_all_fs_names
2021-08-23 01:25:40 -04:00
fs_context.c
vfs: fs_context: fix up param length parsing in legacy_parse_param
2022-01-20 09:13:14 +01:00
fs_parser.c
namei: Standardize callers of filename_lookup()
2021-09-07 16:07:47 -04:00
fs_pin.c
…
fs_struct.c
…
fs_types.c
…
fs-writeback.c
fs: do not update freeing inode i_io_list
2022-12-02 17:41:07 +01:00
fsopen.c
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init.c
…
inode.c
fs: fix UAF/GPF bug in nilfs_mdt_destroy
2022-10-12 09:53:26 +02:00
internal.h
locks: fix TOCTOU race when granting write lease
2022-10-26 12:34:58 +02:00
ioctl.c
fs: fix an infinite loop in iomap_fiemap
2022-05-25 09:57:26 +02:00
Kconfig
Merge tag '5.15-rc-cifs-part2' of git://git.samba.org/sfrench/cifs-2.6
2021-09-12 10:10:21 -07:00
Kconfig.binfmt
binfmt: remove support for em86 (alpha only)
2021-07-25 22:33:03 -07:00
kernel_read_file.c
vfs: check fd has read access in kernel_read_file_from_fd()
2021-10-18 20:22:03 -10:00
libfs.c
libfs: add DEFINE_SIMPLE_ATTRIBUTE_SIGNED for signed value
2022-12-31 13:14:03 +01:00
locks.c
Revert "memcg: enable accounting for file lock caches"
2021-09-07 11:21:48 -07:00
Makefile
io_uring: move to separate directory
2022-12-14 11:37:31 +01:00
mbcache.c
mbcache: add functions to delete entry if unused
2022-08-17 14:22:57 +02:00
mount.h
…
mpage.c
…
namei.c
mm: fs: initialize fsdata passed to write_begin/write_end interface
2022-11-26 09:24:51 +01:00
namespace.c
fs: require CAP_SYS_ADMIN in target namespace for idmapped mounts
2022-08-31 17:16:37 +02:00
no-block.c
…
nsfs.c
…
open.c
locks: fix TOCTOU race when granting write lease
2022-10-26 12:34:58 +02:00
pipe.c
pipe: Fix missing lock in pipe_resize_ring()
2022-06-06 08:43:37 +02:00
pnode.c
…
pnode.h
…
posix_acl.c
fs: fix acl translation
2022-07-02 16:41:17 +02:00
proc_namespace.c
fs: add is_idmapped_mnt() helper
2022-07-02 16:41:14 +02:00
read_write.c
vfs: fix copy_file_range() averts filesystem freeze protection
2022-12-19 12:36:39 +01:00
readdir.c
…
remap_range.c
fs/remap: constrain dedupe of EOF blocks
2022-07-21 21:24:14 +02:00
select.c
select: Fix indefinitely sleeping task in poll_schedule_timeout()
2022-01-29 10:58:25 +01:00
seq_file.c
rxrpc: Fix locking issue
2022-07-12 16:35:08 +02:00
signalfd.c
signalfd: use wake_up_pollfree()
2021-12-14 10:57:15 +01:00
splice.c
Revert "fs: check FMODE_LSEEK to control internal pipe splicing"
2022-10-26 12:34:17 +02:00
stack.c
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stat.c
stat: fix inconsistency between struct stat and struct compat_stat
2022-04-27 14:38:57 +02:00
statfs.c
…
super.c
fscrypt: fix keyring memory leak on mount failure
2022-11-10 18:15:37 +01:00
sync.c
vfs: make sync_filesystem return errors from ->sync_fs
2022-04-27 14:38:50 +02:00
timerfd.c
timerfd: Provide timerfd_resume()
2021-08-10 17:57:22 +02:00
userfaultfd.c
userfaultfd: open userfaultfds with O_RDONLY
2022-10-26 12:34:36 +02:00
utimes.c
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xattr.c
fs: don't audit the capability check in simple_xattr_list()
2022-12-31 13:14:01 +01:00