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Scott Bauer 10eec60ce7 vfs: ioctl: prevent double-fetch in dedupe ioctl 
This prevents a double-fetch from user space that can lead to to an
undersized allocation and heap overflow.

Fixes: 54dbc1517237 ("vfs: hoist the btrfs deduplication ioctl to the vfs")
Signed-off-by: Scott Bauer <sbauer@plzdonthack.me>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-07-28 15:23:12 -07:00
..
9p
Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-07-28 12:59:05 -07:00
adfs
vfs: make the string hashes salt the hash
2016-06-10 20:21:46 -07:00
affs
vfs: make the string hashes salt the hash
2016-06-10 20:21:46 -07:00
afs
rxrpc: Limit the listening backlog
2016-06-10 18:14:47 -07:00
autofs4
Merge branch 'salted-string-hash'
2016-07-28 12:26:31 -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
Merge branch 'akpm' (patches from Andrew)
2016-07-26 19:55:54 -07:00
cachefiles
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
ceph
Merge branch 'salted-string-hash'
2016-07-28 12:26:31 -07:00
cifs
Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-07-28 12:59:05 -07:00
coda
drop redundant ->owner initializations
2016-05-29 19:08:00 -04:00
configfs
configfs: Remove ppos increment in configfs_write_bin_file
2016-06-30 11:28:55 +02:00
cramfs
more trivial ->iterate_shared conversions
2016-05-09 11:41:14 -04:00
crypto
block, fs, mm, drivers: use bio set/get op accessors
2016-06-07 13:41:38 -06:00
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: Make each mount of devpts an independent filesystem.
2016-06-05 10:36:01 -07:00
dlm
dlm: Use kmemdup instead of kmalloc and memcpy
2016-06-23 11:55:58 -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
vfs: make the string hashes salt the hash
2016-06-10 20:21:46 -07:00
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 'akpm' (patches from Andrew)
2016-07-26 19:55:54 -07:00
ext4
Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-07-28 12:59:05 -07:00
f2fs
Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-07-28 12:59:05 -07:00
fat
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2016-07-28 14:22:25 -07:00
freevxfs
more trivial ->iterate_shared conversions
2016-05-09 11:41:14 -04:00
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
Merge branch 'salted-string-hash'
2016-07-28 12:26:31 -07:00
gfs2
Merge branch 'for-4.8/drivers' of git://git.kernel.dk/linux-block
2016-07-26 15:37:51 -07:00
hfs
Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-07-28 12:59:05 -07:00
hfsplus
Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-07-28 12:59:05 -07:00
hostfs
hostfs: switch to ->iterate_shared()
2016-05-12 19:49:30 -04:00
hpfs
vfs: make the string hashes salt the hash
2016-06-10 20:21:46 -07:00
hugetlbfs
mm, fs: remove remaining PAGE_CACHE_* and page_cache_{get,release} usage
2016-04-04 10:41:08 -07:00
isofs
Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-07-28 12:59:05 -07:00
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
Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-07-28 12:59:05 -07:00
kernfs
vfs: make the string hashes salt the hash
2016-06-10 20:21:46 -07:00
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 'salted-string-hash'
2016-07-28 12:26:31 -07:00
minix
simple local filesystems: switch to ->iterate_shared()
2016-05-02 19:49:32 -04:00
ncpfs
vfs: make the string hashes salt the hash
2016-06-10 20:21:46 -07:00
nfs
Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-07-28 12:59:05 -07:00
nfs_common
…
nfsd
Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-07-28 12:59:05 -07:00
nilfs2
Merge branch 'for-4.8/core' of git://git.kernel.dk/linux-block
2016-07-26 15:03:07 -07:00
nls
…
notify
fsnotify: avoid spurious EMFILE errors from inotify_init()
2016-05-19 19:12:14 -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
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2016-07-28 14:22:25 -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
Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-07-28 12:59:05 -07:00
overlayfs
Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-07-28 12:59:05 -07:00
proc
Merge branch 'salted-string-hash'
2016-07-28 12:26:31 -07:00
pstore
pstore/ram: add Device Tree bindings
2016-06-14 11:34:39 -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
quota: use time64_t internally
2016-06-19 18:09:31 +02:00
ramfs
tmpfs/ramfs: fix VM_MAYSHARE mappings for NOMMU
2016-05-20 17:58:30 -07:00
reiserfs
Merge branch 'for-4.8/drivers' of git://git.kernel.dk/linux-block
2016-07-26 15:37:51 -07:00
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
…
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: Implement ->migratepage()
2016-06-23 00:29:53 +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
Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-07-28 12:59:05 -07:00
aio.c
aio: make aio_setup_ring killable
2016-05-23 17:04:14 -07:00
anon_inodes.c
…
attr.c
wrappers for ->i_mutex access
2016-01-22 18:04:28 -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
coredump: fix dumping through pipes
2016-06-07 22:07:09 -04:00
binfmt_elf.c
coredump: fix dumping through pipes
2016-06-07 22:07:09 -04:00
binfmt_em86.c
…
binfmt_flat.c
remove lots of IS_ERR_VALUE abuses
2016-05-27 15:26:11 -07:00
binfmt_misc.c
binfmt_misc: ->s_root is not going anywhere
2016-05-29 19:14:03 -04:00
binfmt_script.c
…
block_dev.c
Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-07-28 12:59:05 -07:00
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
dax: remote unused fault wrappers
2016-07-26 16:19:19 -07:00
dcache.c
Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-07-28 12:59:05 -07:00
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
exec: make exec path waiting for mmap_sem killable
2016-05-23 17:04:14 -07:00
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
find_filesystem(): simplify comparison
2016-01-19 12:02:23 -05:00
fs_pin.c
…
fs_struct.c
…
fs-writeback.c
fs/fs-writeback.c: inode writeback list tracking tracepoints
2016-07-26 16:19:19 -07:00
inode.c
fs/fs-writeback.c: add a new writeback list for sync
2016-07-26 16:19:19 -07:00
internal.h
xfs: update for 4.8-rc1
2016-07-27 09:53:35 -07:00
ioctl.c
vfs: ioctl: prevent double-fetch in dedupe ioctl
2016-07-28 15:23:12 -07:00
iomap.c
fs: iomap based fiemap implementation
2016-06-21 09:38:45 +10:00
Kconfig
fs: introduce iomap infrastructure
2016-06-21 09:23:11 +10:00
Kconfig.binfmt
ELF/MIPS build fix
2016-05-23 17:04:14 -07:00
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
mbcache: add reusable flag to cache entries
2016-02-22 22:44:04 -05:00
mount.h
…
mpage.c
Merge branch 'akpm' (patches from Andrew)
2016-07-26 19:55:54 -07:00
namei.c
Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-07-28 12:59:05 -07:00
namespace.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-07-01 15:20:11 -07:00
no-block.c
…
nsfs.c
…
open.c
vfs: merge .d_select_inode() into .d_real()
2016-06-30 08:53:27 +02:00
pipe.c
pipe: account to kmemcg
2016-07-26 16:19:19 -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
posix_acl: Add set_posix_acl
2016-06-24 12:11:34 -04:00
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
Make file credentials available to the seqfile interfaces
2016-04-14 12:56:09 -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
fs/stat.c: drop the last new_valid_dev check
2016-01-16 11:17:23 -08:00
statfs.c
…
super.c
fs/fs-writeback.c: add a new writeback list for sync
2016-07-26 16:19:19 -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
wrappers for ->i_mutex access
2016-01-22 18:04:28 -05:00
xattr.c
switch ->setxattr() to passing dentry and inode separately
2016-05-27 20:09:16 -04:00