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Hongjie Fang e722fb795f fscrypt: don't set policy for a dead directory 
commit 5858bdad4d upstream.

The directory may have been removed when entering
fscrypt_ioctl_set_policy().  If so, the empty_dir() check will return
error for ext4 file system.

ext4_rmdir() sets i_size = 0, then ext4_empty_dir() reports an error
because 'inode->i_size < EXT4_DIR_REC_LEN(1) + EXT4_DIR_REC_LEN(2)'.  If
the fs is mounted with errors=panic, it will trigger a panic issue.

Add the check IS_DEADDIR() to fix this problem.

Fixes: 9bd8212f98 ("ext4 crypto: add encryption policy and password salt support")
Cc: <stable@vger.kernel.org> # v4.1+
Signed-off-by: Hongjie Fang <hongjiefang@asrmicro.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-07-21 09:05:59 +02:00
..
9p 9p: acl: fix uninitialized iattr access 2019-07-10 09:55:37 +02:00
adfs Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2016-10-10 20:16:43 -07:00
affs affs_lookup(): close a race with affs_remove_link() 2018-05-30 07:50:16 +02:00
afs afs: Fix abort on signal while waiting for call completion 2017-12-20 10:07:25 +01:00
autofs4 autofs: fix error return in autofs_fill_super() 2019-03-13 14:04:58 -07:00
befs befs fixes for 4.9-rc1 2016-10-15 12:09:13 -07:00
bfs bfs: add sanity check at bfs_fill_super() 2018-12-01 09:44:19 +01:00
btrfs btrfs: Ensure replaced device doesn't have pending chunk allocation 2019-07-10 09:55:46 +02:00
cachefiles fscache, cachefiles: remove redundant variable 'cache' 2018-12-17 09:38:34 +01:00
ceph ceph: flush dirty inodes before proceeding with remount 2019-05-25 18:26:49 +02:00
cifs CIFS: cifs_read_allocate_pages: don't iterate through whole page array on ENOMEM 2019-06-11 12:22:43 +02:00
coda coda: fix 'kernel memory exposure attempt' in fsync 2017-11-24 08:33:42 +01:00
configfs configfs: Fix use-after-free when accessing sd->s_dentry 2019-06-22 08:17:23 +02:00
cramfs Cramfs: fix abad comparison when wrap-arounds occur 2018-11-13 11:17:03 -08:00
crypto fscrypt: don't set policy for a dead directory 2019-07-21 09:05:59 +02:00
debugfs debugfs: fix use-after-free on symlink traversal 2019-05-08 07:19:10 +02:00
devpts fs/devpts: always delete dcache dentry-s in dput() 2019-03-23 13:19:47 +01:00
dlm dlm: Don't swamp the CPU with callbacks queued during recovery 2019-02-12 19:44:51 +01:00
ecryptfs do d_instantiate/unlock_new_inode combinations safely 2018-05-30 07:50:16 +02:00
efivarfs Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2016-10-10 20:16:43 -07:00
efs
exofs fs/exofs: fix potential memory leak in mount option parsing 2018-11-27 16:09:38 +01:00
exportfs exportfs: do not read dentry after free 2018-12-17 09:38:33 +01:00
ext2 ext2: Fix underflow in ext2_max_size() 2019-03-23 13:19:48 +01:00
ext4 ext4: do not delete unlinked inode from orphan list on failed truncate 2019-05-31 06:48:11 -07:00
f2fs f2fs: fix to do sanity check on valid block count of segment 2019-06-22 08:17:14 +02:00
fat fs/fat/file.c: issue flush after the writeback of FAT 2019-06-22 08:17:11 +02:00
freevxfs
fscache fscache: fix race between enablement and dropping of object 2018-12-17 09:38:34 +01:00
fuse fuse: retrieve: cap requested size to negotiated max_write 2019-06-22 08:17:15 +02:00
gfs2 gfs2: Fix lru_count going negative 2019-05-31 06:48:13 -07:00
hfs hfs: do not free node before using 2018-12-17 09:38:35 +01:00
hfsplus hfsplus: do not free node before using 2018-12-17 09:38:35 +01:00
hostfs Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2016-10-10 20:16:43 -07:00
hpfs Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2016-10-10 20:16:43 -07:00
hugetlbfs hugetlb: use same fault hash key for shared and private mappings 2019-05-31 06:48:12 -07:00
isofs isofs: fix timestamps beyond 2027 2017-11-30 08:39:04 +00:00
jbd2 jbd2: check superblock mapped prior to committing 2019-05-21 18:48:59 +02:00
jffs2 jffs2: fix use-after-free on symlink traversal 2019-05-08 07:19:09 +02:00
jfs jfs: Fix inconsistency between memory allocation and ea_buf->max_size 2018-08-09 12:18:00 +02:00
kernfs kernfs: Replace strncpy with memcpy 2018-12-08 13:05:05 +01:00
lockd lockd: fix access beyond unterminated strings in prints 2018-11-13 11:17:02 -08:00
logfs Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2016-10-10 20:16:43 -07:00
minix Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2016-10-10 20:16:43 -07:00
ncpfs ncpfs: fix build warning of strncpy 2019-03-13 14:04:52 -07:00
nfs NFS/flexfiles: Use the correct TCP timeout for flexfiles I/O 2019-07-10 09:55:39 +02:00
nfs_common lockd: fix "list_add double add" caused by legacy signal interface 2018-02-03 17:05:38 +01:00
nfsd nfsd: allow fh_want_write to be called twice 2019-06-22 08:17:15 +02:00
nilfs2 do d_instantiate/unlock_new_inode combinations safely 2018-05-30 07:50:16 +02:00
nls
notify fanotify: fix handling of events on child sub-directory 2019-02-06 17:33:30 +01:00
ntfs fs: remove the never implemented aio_fsync file operation 2016-10-30 13:09:42 -04:00
ocfs2 fs/ocfs2: fix race in ocfs2_dentry_attach_lock() 2019-06-22 08:17:18 +02:00
omfs Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2016-10-10 20:16:43 -07:00
openpromfs
orangefs orangefs: off by ones in xattr size checks 2018-11-10 07:42:46 -08:00
overlayfs ovl: filter trusted xattr for non-admin 2018-04-13 19:48:12 +02:00
proc fs/proc/array.c: allow reporting eip/esp for all coredumping threads 2019-07-10 09:55:38 +02:00
pstore pstore/ram: Do not treat empty buffers as valid 2019-01-26 09:38:33 +01:00
qnx4
qnx6
quota fs/quota: Fix spectre gadget in do_quotactl 2018-09-09 20:01:26 +02:00
ramfs Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2016-10-10 20:16:43 -07:00
reiserfs reiserfs: propagate errors from fill_with_dentries() properly 2018-11-27 16:09:38 +01:00
romfs romfs: use different way to generate fsid for BLOCK or MTD 2017-06-17 06:41:56 +02:00
squashfs Squashfs: Compute expected length from inode size rather than block length 2018-09-05 09:20:03 +02:00
sysfs scsi: sysfs: Introduce sysfs_{un,}break_active_protection() 2018-09-05 09:20:10 +02:00
sysv sysv: return 'err' instead of 0 in __sysv_write_inode 2018-12-17 09:38:32 +01:00
tracefs
ubifs ubifs: Handle re-linking of inodes correctly while recovery 2018-12-29 13:40:16 +01:00
udf udf: Fix incorrect final NOT_ALLOCATED (hole) extent length 2019-07-21 09:05:57 +02:00
ufs ufs: fix braino in ufs_get_inode_gid() for solaris UFS flavour 2019-05-25 18:26:56 +02:00
xfs xfs: don't fail when converting shortform attr to long form during ATTR_REPLACE 2018-12-08 13:05:15 +01:00
aio.c aio: fix spectre gadget in lookup_ioctx 2018-12-21 14:11:31 +01:00
anon_inodes.c
attr.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2016-10-10 20:16:43 -07:00
bad_inode.c bad_inode: add missing i_op initializers 2017-01-09 08:32:24 +01:00
binfmt_aout.c
binfmt_elf.c binfmt_elf: Respect error return from `regset->active' 2018-09-26 08:36:37 +02:00
binfmt_elf_fdpic.c
binfmt_em86.c
binfmt_flat.c fs/binfmt_flat.c: make load_flat_shared_library() work 2019-07-10 09:55:38 +02:00
binfmt_misc.c fs/binfmt_misc.c: do not allow offset overflow 2018-06-26 08:08:09 +08:00
binfmt_script.c Revert "exec: load_script: don't blindly truncate shebang string" 2019-02-15 09:07:33 +01:00
block_dev.c blockdev: Fix livelocks on loop device 2019-01-23 08:10:56 +01:00
buffer.c fs: fix guard_bio_eod to check for real EOD errors 2019-04-05 22:29:08 +02:00
char_dev.c chardev: add additional check for minor range overlap 2019-05-31 06:48:29 -07:00
compat.c
compat_binfmt_elf.c binfmt_elf: compat: avoid unused function warning 2018-02-25 11:05:55 +01:00
compat_ioctl.c fs: compat: Remove warning from COMPATIBLE_IOCTL 2018-04-08 12:12:44 +02:00
coredump.c coredump: Ensure proper size of sparse core files 2017-07-05 14:40:26 +02:00
dax.c fs/dax.c: fix inefficiency in dax_writeback_mapping_range() 2018-02-28 10:18:33 +01:00
dcache.c Hang/soft lockup in d_invalidate with simultaneous calls 2019-03-27 14:13:04 +09:00
dcookies.c
direct-io.c direct-io: allow direct writes to empty inodes 2019-03-05 17:57:05 +01:00
drop_caches.c fs/drop_caches.c: avoid softlockups in drop_pagecache_sb() 2019-03-13 14:04:58 -07:00
eventfd.c
eventpoll.c fs/epoll: drop ovflist branch prediction 2019-02-12 19:44:59 +01:00
exec.c exec: Fix mem leak in kernel_read_file 2019-03-13 14:04:55 -07:00
fcntl.c fs/fcntl: f_setown, avoid undefined behaviour 2018-01-31 12:55:52 +01:00
fhandle.c
file.c fs/file.c: initialize init_files.resize_wait 2019-04-05 22:29:07 +02:00
file_table.c
filesystems.c
fs-writeback.c fs/writeback.c: use rcu_barrier() to wait for inflight wb switches going into workqueue when umount 2019-05-21 18:49:01 +02:00
fs_pin.c
fs_struct.c
inode.c Abort file_remove_privs() for non-reg. files 2019-06-22 08:17:24 +02:00
internal.h xfs: evict all inodes involved with log redo item 2017-09-20 08:20:01 +02:00
ioctl.c
iomap.c iomap: fix integer truncation issues in the zeroing and dirtying helpers 2017-09-20 08:19:59 +02:00
Kconfig mm/hugetlb: introduce ARCH_HAS_GIGANTIC_PAGE 2016-10-07 18:46:29 -07:00
Kconfig.binfmt
libfs.c libfs: Modify mount_pseudo_xattr to be clear it is not a userspace mount 2017-12-09 22:01:51 +01:00
locks.c locking, fs/locks: Add missing file_sem locks 2016-10-18 12:21:28 +02:00
Makefile
mbcache.c mbcache: initialize entry->e_referenced in mb_cache_entry_create() 2018-02-22 15:43:48 +01:00
mount.h mnt: In propgate_umount handle visiting mounts in any order 2017-07-21 07:42:22 +02:00
mpage.c fs/mpage.c: fix mpage_writepage() for pages with buffers 2017-10-18 09:35:39 +02:00
namei.c namei: allow restricted O_CREAT of FIFOs and regular files 2018-12-01 09:44:25 +01:00
namespace.c mount: Prevent MNT_DETACH from disconnecting locked mounts 2018-11-21 09:26:02 +01:00
no-block.c
nsfs.c nsfs: mark dentry with DCACHE_RCUACCESS 2018-02-17 13:21:15 +01:00
open.c fs: stream_open - opener for stream-like files so that read and write can run simultaneously without deadlock 2019-06-11 12:22:49 +02:00
pipe.c fs: prevent page refcount overflow in pipe_buf_get 2019-06-11 12:22:45 +02:00
pnode.c mnt: Make propagate_umount less slow for overlapping mount propagation trees 2017-07-21 07:42:22 +02:00
pnode.h mnt: Tuck mounts under others instead of creating shadow/side mounts. 2017-03-15 10:02:43 +08:00
posix_acl.c tmpfs: clear S_ISGID when setting posix ACLs 2017-01-26 08:24:37 +01:00
proc_namespace.c
read_write.c fs: stream_open - opener for stream-like files so that read and write can run simultaneously without deadlock 2019-06-11 12:22:49 +02:00
readdir.c
select.c fs/select: add vmalloc fallback for select(2) 2016-10-11 15:06:30 -07:00
seq_file.c seq/proc: modify seq_put_decimal_[u]ll to take a const char *, not char 2016-10-07 18:46:30 -07:00
signalfd.c
splice.c fs: prevent page refcount overflow in pipe_buf_get 2019-06-11 12:22:45 +02:00
stack.c
stat.c ufs: restore maintaining ->i_blocks 2017-06-14 15:06:01 +02:00
statfs.c
super.c fs: don't scan the inode cache before SB_BORN is set 2019-02-06 17:33:29 +01:00
sync.c
timerfd.c timerfd: Protect the might cancel mechanism proper 2017-05-08 07:47:54 +02:00
userfaultfd.c userfaultfd: shmem: __do_fault requires VM_FAULT_NOPAGE 2017-12-20 10:07:18 +01:00
utimes.c Merge remote-tracking branch 'jk/vfs' into work.misc 2016-10-08 11:06:08 -04:00
xattr.c sysfs: Do not return POSIX ACL xattrs via listxattr 2018-10-10 08:53:22 +02:00