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Liu Bo 3eb548ee3a Btrfs: memset to avoid stale content in btree node block 
During updating btree, we could push items between sibling
nodes/leaves, for leaves data sections starts reversely from
the end of the block while for nodes we only have key pairs
which are stored one by one from the start of the block.

So we could do try to push key pairs from one node to the next
node right in the tree, and after that, we update the node's
nritems to reflect the correct end while leaving the stale
content in the node.  One may intentionally corrupt the fs
image and access the stale content by bumping the nritems and
causes various crashes.

This takes the in-memory @nritems as the correct one and
gets to memset the unused part of a btree node.

Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2016-09-26 18:03:47 +02:00
..
9p
Merge branch 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-08-07 10:01:14 -04:00
adfs
Merge branch 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-08-07 10:01:14 -04:00
affs
get rid of 'parent' argument of ->d_compare()
2016-07-31 16:37:25 -04:00
afs
rxrpc: Fix races between skb free, ACK generation and replying
2016-08-06 00:08:40 -04:00
autofs4
autofs: use dentry flags to block walks during expire
2016-09-19 15:36:17 -07:00
befs
fs/befs/io.c:befs_bread(): remove unneeded initialization to NULL
2016-05-23 17:04:14 -07:00
bfs
more trivial ->iterate_shared conversions
2016-05-09 11:41:14 -04:00
btrfs
Btrfs: memset to avoid stale content in btree node block
2016-09-26 18:03:47 +02:00
cachefiles
cachefiles: Fix race between inactivating and culling a cache object
2016-08-03 13:33:26 -04:00
ceph
ceph: do not modify fi->frag in need_reset_readdir()
2016-09-05 14:30:35 +02:00
cifs
Move check for prefix path to within cifs_get_root()
2016-09-09 23:58:07 -05:00
coda
drop redundant ->owner initializations
2016-05-29 19:08:00 -04:00
configfs
configfs: Return -EFBIG from configfs_write_bin_file.
2016-09-16 12:58:28 +02:00
cramfs
more trivial ->iterate_shared conversions
2016-05-09 11:41:14 -04:00
crypto
fscrypto: require write access to mount to set encryption policy
2016-09-10 01:18:57 -04:00
debugfs
Merge branch 'd_real' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs into work.misc
2016-06-30 23:34:49 -04:00
devpts
devpts: return NULL pts 'priv' entry for non-devpts nodes
2016-09-03 11:02:50 -07:00
dlm
dlm: fix malfunction of dlm_tool caused by debugfs changes
2016-08-26 13:22:14 -05:00
ecryptfs
ecryptfs: don't allow mmap when the lower fs doesn't support it
2016-07-08 10:35:28 -05:00
efivarfs
get rid of 'parent' argument of ->d_compare()
2016-07-31 16:37:25 -04:00
efs
fs/efs/super.c: fix return value
2016-05-20 17:58:30 -07:00
exofs
block, fs, mm, drivers: use bio set/get op accessors
2016-06-07 13:41:38 -06:00
exportfs
introduce a parallel variant of ->iterate()
2016-05-02 19:49:29 -04:00
ext2
Merge branch 'work.const-qstr' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-08-06 09:49:02 -04:00
ext4
fscrypto: require write access to mount to set encryption policy
2016-09-10 01:18:57 -04:00
f2fs
fscrypto: require write access to mount to set encryption policy
2016-09-10 01:18:57 -04:00
fat
Merge branch 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-08-07 10:01:14 -04:00
freevxfs
freevxfs: update Kconfig information
2016-06-13 10:20:39 +02:00
fscache
Merge branch 'd_real' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs into work.misc
2016-06-30 23:34:49 -04:00
fuse
fuse: direct-io: don't dirty ITER_BVEC pages
2016-08-24 18:17:04 +02:00
gfs2
fs: return EPERM on immutable inode
2016-08-07 10:03:31 -04:00
hfs
Merge branch 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-08-07 10:01:14 -04:00
hfsplus
Merge branch 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-08-07 10:01:14 -04:00
hostfs
hostfs: Freeing an ERR_PTR in hostfs_fill_sb_common()
2016-08-04 00:18:10 +02:00
hpfs
get rid of 'parent' argument of ->d_compare()
2016-07-31 16:37:25 -04:00
hugetlbfs
mm, fs: remove remaining PAGE_CACHE_* and page_cache_{get,release} usage
2016-04-04 10:41:08 -07:00
isofs
get rid of 'parent' argument of ->d_compare()
2016-07-31 16:37:25 -04:00
jbd2
The major change this cycle is deleting ext4's copy of the file system
2016-07-26 18:35:55 -07:00
jffs2
vfs: make the string hashes salt the hash
2016-06-10 20:21:46 -07:00
jfs
get rid of 'parent' argument of ->d_compare()
2016-07-31 16:37:25 -04:00
kernfs
kernfs: don't depend on d_find_any_alias() when generating notifications
2016-08-31 14:48:52 +02:00
lockd
Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-07-28 12:59:05 -07:00
logfs
Merge branch 'work.const-qstr' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-08-06 09:49:02 -04:00
minix
simple local filesystems: switch to ->iterate_shared()
2016-05-02 19:49:32 -04:00
ncpfs
get rid of 'parent' argument of ->d_compare()
2016-07-31 16:37:25 -04:00
nfs
NFSv4.1: Fix the CREATE_SESSION slot number accounting
2016-09-11 14:56:44 -04:00
nfs_common
…
nfsd
nfsd: don't return an unhashed lock stateid after taking mutex
2016-08-12 16:10:25 -04:00
nilfs2
nilfs2: move ioctl interface and disk layout to uapi separately
2016-08-02 19:35:21 -04:00
nls
…
notify
fanotify: fix list corruption in fanotify_get_response()
2016-09-19 15:36:17 -07:00
ntfs
Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-07-28 12:59:05 -07:00
ocfs2
Revert "ocfs2: bump up o2cb network protocol version"
2016-09-19 15:36:17 -07:00
omfs
more trivial ->iterate_shared conversions
2016-05-09 11:41:14 -04:00
openpromfs
more trivial ->iterate_shared conversions
2016-05-09 11:41:14 -04:00
orangefs
orangefs: Account for jiffies wraparound.
2016-08-02 15:39:13 -04:00
overlayfs
ovl: fix workdir creation
2016-09-05 13:55:20 +02:00
proc
fs/proc/kcore.c: Add bounce buffer for ktext data
2016-09-20 13:32:49 -07:00
pstore
ramoops: use persistent_ram_free() instead of kfree() for freeing prz
2016-08-05 11:21:46 -07:00
qnx4
more trivial ->iterate_shared conversions
2016-05-09 11:41:14 -04:00
qnx6
more trivial ->iterate_shared conversions
2016-05-09 11:41:14 -04:00
quota
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2016-07-29 15:54:19 -07:00
ramfs
ipc/shm: fix crash if CONFIG_SHMEM is not set
2016-09-19 15:36:17 -07:00
reiserfs
reiserfs: fix "new_insert_key may be used uninitialized ..."
2016-08-02 19:35:22 -04:00
romfs
romfs, squashfs: switch to ->iterate_shared()
2016-05-09 11:41:15 -04:00
squashfs
fs: have ll_rw_block users pass in op and flags separately
2016-06-07 13:41:38 -06:00
sysfs
sysfs: correctly handle read offset on PREALLOC attrs
2016-08-31 15:14:44 +02:00
sysv
vfs: make the string hashes salt the hash
2016-06-10 20:21:46 -07:00
tracefs
tracefs: ->d_parent is never NULL or negative...
2016-05-29 16:22:07 -04:00
ubifs
ubifs: Fix xattr generic handler usage
2016-08-23 23:02:52 +02:00
udf
Merge branch 'for-4.8/drivers' of git://git.kernel.dk/linux-block
2016-07-26 15:37:51 -07:00
ufs
Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-07-28 12:59:05 -07:00
xfs
xfs: track log done items directly in the deferred pending work item
2016-08-30 13:51:39 +10:00
aio.c
aio: mark AIO pseudo-fs noexec
2016-09-15 15:49:28 -07:00
anon_inodes.c
…
attr.c
vfs: Don't modify inodes with a uid or gid unknown to the vfs
2016-07-05 15:06:46 -05:00
bad_inode.c
switch ->setxattr() to passing dentry and inode separately
2016-05-27 20:09:16 -04:00
binfmt_aout.c
fs: fix binfmt_aout.c build error
2016-05-28 16:34:59 -07:00
binfmt_elf_fdpic.c
elf_fdpic_transfer_args_to_stack(): make it generic
2016-07-25 16:51:49 +10:00
binfmt_elf.c
binfmt_elf: switch to new creds when switching to new mm
2016-08-31 09:13:56 -07:00
binfmt_em86.c
fs/binfmt_em86.c: fix incompatible pointer type
2016-08-02 19:35:15 -04:00
binfmt_flat.c
binfmt_flat: allow compressed flat binary format to work on MMU systems
2016-07-28 13:29:12 +10:00
binfmt_misc.c
binfmt_misc for-linus on 20160727
2016-08-07 10:13:14 -04:00
binfmt_script.c
…
block_dev.c
fs/block_dev: fix potential NULL ptr deref in freeze_bdev()
2016-08-25 08:38:26 -06:00
buffer.c
xfs: update for 4.8-rc1
2016-07-27 09:53:35 -07:00
char_dev.c
chardev: add missing line break in pr_warn
2016-07-14 16:21:53 +09:00
compat_binfmt_elf.c
…
compat_ioctl.c
[media] cec: add compat32 ioctl support
2016-06-28 10:00:13 -03:00
compat.c
Fix a number of bugs, most notably a potential stale data exposure
2016-05-24 12:55:26 -07:00
coredump.c
coredump: fix dumping through pipes
2016-06-07 22:07:09 -04:00
dax.c
libnvdimm for 4.8
2016-07-28 17:38:16 -07:00
dcache.c
Merge branch 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-08-07 10:01:14 -04:00
dcookies.c
…
direct-io.c
direct-io: use bio set/get op accessors
2016-06-07 13:41:38 -06:00
drop_caches.c
…
eventfd.c
eventfd: document lockless access in eventfd_poll
2016-03-22 15:36:02 -07:00
eventpoll.c
fs: poll/select/recvmmsg: use timespec64 for timeout events
2016-05-19 19:12:14 -07:00
exec.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu
2016-08-04 18:04:44 -04:00
fcntl.c
…
fhandle.c
fs/coredump: prevent fsuid=0 dumps into user-controlled directories
2016-03-22 15:36:02 -07:00
file_table.c
…
file.c
give readdir(2)/getdents(2)/etc. uniform exclusion with lseek()
2016-05-02 19:49:28 -04:00
filesystems.c
…
fs_pin.c
…
fs_struct.c
…
fs-writeback.c
mm, writeback: flush plugged IO in wakeup_flusher_threads()
2016-08-09 19:58:06 -06:00
inode.c
Merge branch 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-08-07 10:01:14 -04:00
internal.h
binfmt_misc for-linus on 20160727
2016-08-07 10:13:14 -04:00
ioctl.c
vfs: cap dedupe request structure size at PAGE_SIZE
2016-09-15 13:29:52 -07:00
iomap.c
iomap: don't set FIEMAP_EXTENT_MERGED for extent based filesystems
2016-08-29 11:33:58 +10:00
Kconfig
Highlights:
2016-08-04 19:59:06 -04:00
Kconfig.binfmt
m68k: enable binfmt_flat on systems with an MMU
2016-07-28 13:29:13 +10:00
libfs.c
lockless next_positive()
2016-06-20 17:11:29 -04:00
locks.c
locks: use file_inode()
2016-07-01 10:24:18 -04:00
Makefile
fs: introduce iomap infrastructure
2016-06-21 09:23:11 +10:00
mbcache.c
…
mount.h
…
mpage.c
block/mm: make bdev_ops->rw_page() take a bool for read/write
2016-08-07 14:41:02 -06:00
namei.c
fs: return EPERM on immutable inode
2016-08-07 10:03:31 -04:00
namespace.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2016-07-29 15:54:19 -07:00
no-block.c
…
nsfs.c
…
open.c
binfmt_misc for-linus on 20160727
2016-08-07 10:13:14 -04:00
pipe.c
mm: memcontrol: only mark charged pages with PageKmemcg
2016-08-09 10:14:10 -07:00
pnode.c
propogate_mnt: Handle the first propogated copy being a slave
2016-05-05 09:54:45 -05:00
pnode.h
…
posix_acl.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2016-07-29 15:54:19 -07:00
proc_namespace.c
vfs: show_vfsstat: do not ignore errors from show_devname method
2016-03-16 13:09:08 -04:00
read_write.c
x86/syscalls: Add compat_sys_preadv64v2/compat_sys_pwritev64v2
2016-07-15 10:30:26 +02:00
readdir.c
restore killability of old mutex_lock_killable(&inode->i_mutex) users
2016-05-26 00:13:25 -04:00
select.c
fs: poll/select/recvmmsg: use timespec64 for timeout events
2016-05-19 19:12:14 -07:00
seq_file.c
fs/seq_file: fix out-of-bounds read
2016-08-26 17:39:35 -07:00
signalfd.c
…
splice.c
Merge branch 'ovl-fixes' into for-linus
2016-05-11 00:00:29 -04:00
stack.c
…
stat.c
…
statfs.c
…
super.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2016-07-29 15:54:19 -07:00
sync.c
mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros
2016-04-04 10:41:08 -07:00
timerfd.c
timerfd: Reject ALARM timerfds without CAP_WAKE_ALARM
2016-06-09 23:42:38 +02:00
userfaultfd.c
mm: introduce fault_env
2016-07-26 16:19:19 -07:00
utimes.c
fs: return EPERM on immutable inode
2016-08-07 10:03:31 -04:00
xattr.c
vfs: Don't modify inodes with a uid or gid unknown to the vfs
2016-07-05 15:06:46 -05:00