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android_kernel_sony_sdm845/fs
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Filename Latest commit message Latest commit date
Al Viro 186c5856dc cachefiles: fix the race between cachefiles_bury_object() and rmdir(2) 
commit 169b803397499be85bdd1e3d07d6f5e3d4bd669e upstream.

the victim might've been rmdir'ed just before the lock_rename();
unlike the normal callers, we do not look the source up after the
parents are locked - we know it beforehand and just recheck that it's
still the child of what used to be its parent.  Unfortunately,
the check is too weak - we don't spot a dead directory since its
->d_parent is unchanged, dentry is positive, etc.  So we sail all
the way to ->rename(), with hosting filesystems _not_ expecting
to be asked renaming an rmdir'ed subdirectory.

The fix is easy, fortunately - the lock on parent is sufficient for
making IS_DEADDIR() on child safe.

Cc: stable@vger.kernel.org
Fixes: 9ae326a690 (CacheFiles: A cache that backs onto a mounted filesystem)
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-11-10 07:43:00 -08:00
..
9p fs/9p/xattr.c: catch the error of p9_client_clunk when setting xattr failed 2018-09-09 20:01:20 +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 autofs_sbi() does not check super block type 2018-09-19 22:47:16 +02:00
befs befs fixes for 4.9-rc1 2016-10-15 12:09:13 -07:00
bfs Merge remote-tracking branch 'ovl/rename2' into for-linus 2016-10-10 23:02:51 -04:00
btrfs Btrfs: incremental send, fix invalid memory access 2018-11-10 07:42:53 -08:00
cachefiles cachefiles: fix the race between cachefiles_bury_object() and rmdir(2) 2018-11-10 07:43:00 -08:00
ceph ceph: fix dentry leak in splice_dentry() 2018-08-24 13:12:33 +02:00
cifs cifs: Use ULL suffix for 64-bit constant 2018-11-10 07:42:54 -08:00
coda coda: fix 'kernel memory exposure attempt' in fsync 2017-11-24 08:33:42 +01:00
configfs configfs: fix registered group removal 2018-09-26 08:36:38 +02:00
cramfs
crypto fscrypt: use unbound workqueue for decryption 2018-08-03 07:55:20 +02:00
debugfs dentry name snapshots 2017-08-06 18:59:43 -07:00
devpts Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2016-10-10 20:16:43 -07:00
dlm dlm: avoid double-free on error path in dlm_device_{register,unregister} 2017-09-09 17:39:40 +02:00
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: print a hex number after a 0x prefix 2016-10-27 18:43:43 -07:00
exportfs exportfs: be careful to only return expected errors. 2016-10-06 09:07:44 -04:00
ext2 do d_instantiate/unlock_new_inode combinations safely 2018-05-30 07:50:16 +02:00
ext4 ext4: avoid running out of journal credits when appending to an inline file 2018-10-20 09:51:32 +02:00
f2fs f2fs: fix multiple f2fs_add_link() having same name for inline dentry 2018-11-10 07:42:45 -08:00
fat fs/fat/fatent.c: add cond_resched() to fat_count_free_clusters() 2018-11-10 07:42:56 -08:00
freevxfs
fscache fscache: Allow cancelled operations to be enqueued 2018-09-05 09:20:02 +02:00
fuse fuse: Add missed unlock_page() to fuse_readpages_fill() 2018-09-05 09:20:08 +02:00
gfs2 gfs2: Don't reject a supposedly full bitmap if we have blocks reserved 2018-09-26 08:36:32 +02:00
hfs hfs: prevent crash on exit from failed search 2018-09-15 09:42:57 +02:00
hfsplus hfsplus: fix NULL dereference in hfsplus_lookup() 2018-09-15 09:42:57 +02:00
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 hugetlbfs: initialize shared policy as part of inode allocation 2017-10-08 10:26:09 +02:00
isofs isofs: fix timestamps beyond 2027 2017-11-30 08:39:04 +00:00
jbd2 jbd2: don't mark block as modified if the handle is out of credits 2018-07-11 16:26:44 +02:00
jffs2 jffs2: Fix use-after-free bug in jffs2_iget()'s error handling path 2018-05-30 07:50:22 +02:00
jfs jfs: Fix inconsistency between memory allocation and ea_buf->max_size 2018-08-09 12:18:00 +02:00
kernfs kernfs: fix regression in kernfs_fop_write caused by wrong type 2018-02-17 13:21:15 +01:00
lockd lockd: lost rollback of set_grace_period() in lockd_down_net() 2018-05-19 10:27:00 +02:00
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 staging: ncpfs: memory corruption in ncp_read_kernel() 2018-03-28 18:39:23 +02:00
nfs NFSv4.1 fix infinite loop on I/O. 2018-09-26 08:36:37 +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: fix corrupted reply to badly ordered compound 2018-10-03 17:01:48 -07:00
nilfs2 do d_instantiate/unlock_new_inode combinations safely 2018-05-30 07:50:16 +02:00
nls
notify fanotify: fix logic of events on child 2018-04-24 09:34:18 +02:00
ntfs fs: remove the never implemented aio_fsync file operation 2016-10-30 13:09:42 -04:00
ocfs2 ocfs2: fix deadlock caused by recursive locking in xattr 2018-11-10 07:42:51 -08:00
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 fs: Replace CURRENT_TIME with current_time() for inode timestamps 2016-09-27 21:06:21 -04:00
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 sched/cputime: Convert kcpustat to nsecs 2018-10-20 09:51:32 +02:00
pstore pstore: Fix incorrect persistent ram buffer mapping 2018-09-26 08:36:35 +02:00
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: change j_timestamp type to time64_t 2018-09-15 09:42:57 +02:00
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 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2016-10-10 20:16:43 -07:00
tracefs fs: Replace CURRENT_TIME with current_time() for inode timestamps 2016-09-27 21:06:21 -04:00
ubifs ubifs: Check for name being NULL while mounting 2018-10-13 09:18:58 +02:00
udf udf: Detect incorrect directory size 2018-07-03 11:23:17 +02:00
ufs ufs: we need to sync inode before freeing it 2018-11-10 07:42:49 -08:00
xfs xfs: truncate transaction does not modify the inobt 2018-11-10 07:43:00 -08:00
aio.c fix io_destroy()/aio_complete() race 2018-06-06 16:44:38 +02:00
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
binfmt_misc.c fs/binfmt_misc.c: do not allow offset overflow 2018-06-26 08:08:09 +08:00
binfmt_script.c
block_dev.c fs/mpage.c: fix mpage_writepage() for pages with buffers 2017-10-18 09:35:39 +02:00
buffer.c fs: add i_blocksize() 2017-06-14 15:06:00 +02:00
char_dev.c
compat.c compat: remove compat_printk() 2016-09-27 21:20:53 -04:00
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 fs/dcache.c: fix kmemcheck splat at take_dentry_name_snapshot() 2018-09-15 09:42:58 +02:00
dcookies.c
direct-io.c direct-io: Prevent NULL pointer access in submit_page_section 2017-10-18 09:35:41 +02:00
drop_caches.c
eventfd.c
eventpoll.c epoll: fix race between ep_poll_callback(POLLFREE) and ep_free()/ep_remove() 2017-09-07 08:35:41 +02:00
exec.c exec: avoid gcc-8 warning for get_task_comm 2018-07-28 07:49:14 +02:00
fcntl.c fs/fcntl: f_setown, avoid undefined behaviour 2018-01-31 12:55:52 +01:00
fhandle.c
file.c fs/file: more unsigned file descriptors 2016-09-27 18:47:38 -04:00
file_table.c
filesystems.c
fs-writeback.c bdi: Fix oops in wb_workfn() 2018-05-16 10:08:42 +02:00
fs_pin.c
fs_struct.c
inode.c Fix up non-directory creation in SGID directories 2018-07-17 11:37:53 +02:00
internal.h xfs: evict all inodes involved with log redo item 2017-09-20 08:20:01 +02:00
ioctl.c vfs: cap dedupe request structure size at PAGE_SIZE 2016-09-15 13:29:52 -07:00
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 getname_kernel() needs to make sure that ->name != ->iname in long case 2018-04-20 08:21:07 +02:00
namespace.c fix __legitimize_mnt()/mntput() race 2018-08-15 18:14:43 +02:00
no-block.c
nsfs.c nsfs: mark dentry with DCACHE_RCUACCESS 2018-02-17 13:21:15 +01:00
open.c fs: completely ignore unknown open flags 2017-07-12 15:01:02 +02:00
pipe.c pipe: fix off-by-one error when checking buffer limits 2018-02-17 13:21:18 +01:00
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 vfs: deny copy_file_range() for non regular files 2017-10-12 11:51:26 +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 vfs: fix uninitialized flags in splice_to_pipe() 2017-02-23 17:44:35 +01:00
stack.c
stat.c ufs: restore maintaining ->i_blocks 2017-06-14 15:06:01 +02:00
statfs.c
super.c sget(): handle failures of register_shrinker() 2018-03-03 10:23:21 +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