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J. Bruce Fields ced85a7568 nfs: fix false positives in nfs40_walk_client_list() 
It's possible that two different servers can return the same (clientid,
verifier) pair purely by coincidence.  Both are 64-bit values, but
depending on the server implementation, they can be highly predictable
and collisions may be quite likely, especially when there are lots of
servers.

So, check for this case.  If the clientid and verifier both match, then
we actually know they *can't* be the same server, since a new
SETCLIENTID to an already-known server should have changed the verifier.

This helps fix a bug that could cause the client to mount a filesystem
from the wrong server.

Reviewed-by: Jeff Layton <jlayton@redhat.com>
Tested-by: Yongcheng Yang <yoyang@redhat.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2016-12-01 17:43:31 -05:00
..
9p
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-10-10 20:16:43 -07:00
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
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-10-10 20:16:43 -07:00
afs
afs: call->operation_ID sometimes used as __be32 sometimes as u32
2016-10-13 17:03:52 +01:00
autofs4
autofs: refactor ioctl fn vector in iookup_dev_ioctl()
2016-10-11 15:06:31 -07:00
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
Merge branch 'for-4.9-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
2016-11-04 20:08:16 -07:00
cachefiles
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-10-10 20:16:43 -07:00
ceph
ceph: use default file splice read callback
2016-11-10 20:13:04 +01:00
cifs
CIFS: Retrieve uid and gid from special sid if enabled
2016-10-14 14:22:16 -05:00
coda
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-10-10 20:16:43 -07:00
configfs
Merge remote-tracking branch 'ovl/rename2' into for-linus
2016-10-10 23:02:51 -04:00
cramfs
…
crypto
fscrypto: don't use on-stack buffer for key derivation
2016-11-19 20:56:13 -05:00
debugfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-10-10 20:16:43 -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: free workqueues after the connections
2016-10-10 09:54:00 -05:00
ecryptfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-10-10 20:16:43 -07:00
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
ext2: avoid bogus -Wmaybe-uninitialized warning
2016-10-18 11:29:35 +02:00
ext4
ext4: sanity check the block and cluster size at mount time
2016-11-19 20:58:15 -05:00
f2fs
This includes fixing a bug which references a wrong pointer, sum_page, in
2016-10-18 14:15:23 -07:00
fat
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-10-10 20:16:43 -07:00
freevxfs
…
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: fix fuse_write_end() if zero bytes were copied
2016-11-15 12:34:21 +01:00
gfs2
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-10-10 20:16:43 -07:00
hfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-10-10 20:16:43 -07:00
hfsplus
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-10-10 20:16:43 -07:00
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
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-10-10 20:16:43 -07:00
isofs
isofs: Do not return EACCES for unknown filesystems
2016-10-18 11:28:21 +02:00
jbd2
jbd2: fix incorrect unlock on j_list_lock
2016-10-12 23:19:18 -04:00
jffs2
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-10-10 20:16:43 -07:00
jfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-10-10 20:16:43 -07:00
kernfs
kernfs: Add noop_fsync to supported kernfs_file_fops
2016-10-27 17:47:11 +02:00
lockd
treewide: remove redundant #include <linux/kconfig.h>
2016-10-11 15:06:33 -07:00
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
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-10-10 20:16:43 -07:00
nfs
nfs: fix false positives in nfs40_walk_client_list()
2016-12-01 17:43:31 -05:00
nfs_common
…
nfsd
nfsd: Fix general protection fault in release_lock_stateid()
2016-11-01 15:24:43 -04:00
nilfs2
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-10-10 20:16:43 -07:00
nls
…
notify
fsnotify: clean up spinlock assertions
2016-10-07 18:46:26 -07:00
ntfs
fs: remove the never implemented aio_fsync file operation
2016-10-30 13:09:42 -04:00
ocfs2
ocfs2: fix not enough credit panic
2016-11-11 08:12:37 -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: add .owner to debugfs file_operations
2016-11-16 11:52:19 -05:00
overlayfs
ovl: fsync after copy-up
2016-10-31 14:42:14 +01:00
proc
proc: fix NULL dereference when reading /proc/<pid>/auxv
2016-10-27 18:43:43 -07:00
pstore
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-10-10 20:16:43 -07:00
qnx4
…
qnx6
…
quota
quota: fill in Q_XGETQSTAT inode information for inactive quotas
2016-08-15 17:43:31 +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
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-10-10 20:16:43 -07:00
romfs
…
squashfs
vfs: Remove {get,set,remove}xattr inode operations
2016-10-07 21:48:36 -04:00
sysfs
Merge branch 'for-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
2016-10-14 12:18:50 -07:00
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: Fix regression in ubifs_readdir()
2016-10-28 14:48:31 +02:00
udf
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-10-10 20:16:43 -07:00
ufs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-10-10 20:16:43 -07:00
xfs
xfs: defer should abort intent items if the trans roll fails
2016-10-24 14:21:18 +11:00
aio.c
aio: fix freeze protection of aio writes
2016-10-30 13:09:42 -04:00
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
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-10-10 20:16:43 -07:00
binfmt_aout.c
…
binfmt_elf_fdpic.c
elf_fdpic_transfer_args_to_stack(): make it generic
2016-07-25 16:51:49 +10:00
binfmt_elf.c
x86/coredump: Use pr_reg size, rather that TIF_IA32 flag
2016-09-14 21:28:10 +02:00
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
fs: Replace current_fs_time() with current_time()
2016-09-27 21:06:22 -04:00
binfmt_script.c
…
block_dev.c
block: implement (some of) fallocate for block devices
2016-10-11 15:06:30 -07:00
buffer.c
fs: use mapping_set_error instead of opencoded set_bit
2016-10-11 15:06:33 -07:00
char_dev.c
dax: define a unified inode/address_space for device-dax mappings
2016-08-23 22:58:51 -07:00
compat_binfmt_elf.c
…
compat_ioctl.c
fs: compat_ioctl: add pretimeout functions for watchdogs
2016-09-24 09:27:18 +02:00
compat.c
compat: remove compat_printk()
2016-09-27 21:20:53 -04:00
coredump.c
coredump: fix unfreezable coredumping task
2016-11-11 08:12:37 -08:00
dax.c
thp: reduce usage of huge zero page's atomic counter
2016-10-07 18:46:28 -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
consistent treatment of EFAULT on O_DIRECT read/write
2016-10-03 20:38:55 -04:00
drop_caches.c
…
eventfd.c
…
eventpoll.c
…
exec.c
mm: replace get_user_pages_remote() write/force parameters with gup_flags
2016-10-19 08:12:02 -07:00
fcntl.c
…
fhandle.c
…
file_table.c
…
file.c
fs/file: more unsigned file descriptors
2016-09-27 18:47:38 -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' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-10-10 20:16:43 -07:00
internal.h
Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-10-10 13:04:49 -07:00
ioctl.c
vfs: cap dedupe request structure size at PAGE_SIZE
2016-09-15 13:29:52 -07:00
iomap.c
fs: Do to trim high file position bits in iomap_page_mkwrite_actor
2016-10-24 14:20:25 +11:00
Kconfig
mm/hugetlb: introduce ARCH_HAS_GIGANTIC_PAGE
2016-10-07 18:46:29 -07:00
Kconfig.binfmt
ARM: 8594/1: enable binfmt_flat on systems with an MMU
2016-08-12 16:47:05 +01:00
libfs.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
locks.c
locking, fs/locks: Add missing file_sem locks
2016-10-18 12:21:28 +02:00
Makefile
…
mbcache.c
mbcache: fix to detect failure of register_shrinker
2016-08-31 11:44:36 -04:00
mount.h
mnt: Add a per mount namespace limit on the number of mounts
2016-09-30 12:46:48 -05:00
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
Merge branch 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs
2016-10-14 17:23:33 -07:00
namespace.c
This adds a new gcc plugin named "latent_entropy". It is designed to
2016-10-15 10:03:15 -07:00
no-block.c
…
nsfs.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
open.c
xfs: reflink update for 4.9-rc1
2016-10-13 20:28:22 -07:00
pipe.c
pipe: cap initial pipe capacity according to pipe-max-size limit
2016-10-11 15:06:32 -07:00
pnode.c
mnt: Add a per mount namespace limit on the number of mounts
2016-09-30 12:46:48 -05:00
pnode.h
mnt: Add a per mount namespace limit on the number of mounts
2016-09-30 12:46:48 -05:00
posix_acl.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
proc_namespace.c
…
read_write.c
iov_iter: kernel-doc import_iovec() and rw_copy_check_uvector()
2016-10-14 20:00:34 -04:00
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
fix default_file_splice_read()
2016-11-26 20:05:42 -05:00
stack.c
…
stat.c
…
statfs.c
…
super.c
fs/super.c: don't fool lockdep in freeze_super() and thaw_super() paths
2016-10-14 20:41:59 -04:00
sync.c
…
timerfd.c
…
userfaultfd.c
mm: introduce fault_env
2016-07-26 16:19:19 -07:00
utimes.c
Merge remote-tracking branch 'jk/vfs' into work.misc
2016-10-08 11:06:08 -04:00
xattr.c
xattr: Fix setting security xattrs on sockfs
2016-11-17 00:00:23 -05:00