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Trond Myklebust 68c5c3fec7 NFSv4: Handle the special Linux file open access mode 
commit 44942b4e457beda00981f616402a1a791e8c616e upstream.

According to the open() manpage, Linux reserves the access mode 3
to mean "check for read and write permission on the file and return
a file descriptor that can't be used for reading or writing."

Currently, the NFSv4 code will ask the server to open the file,
and will use an incorrect share access mode of 0. Since it has
an incorrect share access mode, the client later forgets to send
a corresponding close, meaning it can leak stateids on the server.

Fixes: ce4ef7c0a8a05 ("NFS: Split out NFS v4 file operations")
Cc: stable@vger.kernel.org # 3.6+
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-04 09:34:50 +02:00
..
9p
9p: acl: fix uninitialized iattr access
2019-07-10 09:56:35 +02:00
adfs
…
affs
affs_lookup(): close a race with affs_remove_link()
2018-05-30 07:48:51 +02:00
afs
afs: Fix afs_kill_pages()
2017-12-20 10:04:56 +01:00
autofs4
autofs: fix error return in autofs_fill_super()
2019-03-23 08:44:27 +01:00
befs
…
bfs
bfs: add sanity check at bfs_fill_super()
2018-12-01 09:46:33 +01:00
btrfs
btrfs: Ensure replaced device doesn't have pending chunk allocation
2019-07-10 09:56:44 +02:00
cachefiles
fscache, cachefiles: remove redundant variable 'cache'
2018-12-17 21:55:12 +01:00
ceph
ceph: flush dirty inodes before proceeding with remount
2019-06-11 12:23:46 +02:00
cifs
SMB3: retry on STATUS_INSUFFICIENT_RESOURCES instead of failing write
2019-07-10 09:56:34 +02:00
coda
coda: fix 'kernel memory exposure attempt' in fsync
2017-11-24 08:32:25 +01:00
configfs
configfs: Fix use-after-free when accessing sd->s_dentry
2019-06-22 08:18:26 +02:00
cramfs
Cramfs: fix abad comparison when wrap-arounds occur
2018-11-21 09:27:37 +01:00
debugfs
debugfs: fix use-after-free on symlink traversal
2019-05-16 19:45:01 +02:00
devpts
devpts: clean up interface to pty drivers
2016-08-16 09:30:49 +02:00
dlm
dlm: Don't swamp the CPU with callbacks queued during recovery
2019-02-20 10:13:04 +01:00
ecryptfs
do d_instantiate/unlock_new_inode combinations safely
2018-05-30 07:48:52 +02:00
efivarfs
efi: Make efivarfs entries immutable by default
2016-03-03 15:07:09 -08:00
efs
…
exofs
fs/exofs: fix potential memory leak in mount option parsing
2018-11-27 16:08:00 +01:00
exportfs
exportfs: do not read dentry after free
2018-12-17 21:55:10 +01:00
ext2
ext2: Fix underflow in ext2_max_size()
2019-03-23 08:44:36 +01:00
ext4
fscrypt: don't set policy for a dead directory
2019-07-21 09:07:10 +02:00
f2fs
fscrypt: don't set policy for a dead directory
2019-07-21 09:07:10 +02:00
fat
fs/fat/file.c: issue flush after the writeback of FAT
2019-06-22 08:18:17 +02:00
freevxfs
…
fscache
fscache: fix race between enablement and dropping of object
2018-12-17 21:55:11 +01:00
fuse
fuse: retrieve: cap requested size to negotiated max_write
2019-06-22 08:18:20 +02:00
gfs2
gfs2: Fix lru_count going negative
2019-06-11 12:23:53 +02:00
hfs
hfs: do not free node before using
2018-12-17 21:55:12 +01:00
hfsplus
hfsplus: do not free node before using
2018-12-17 21:55:12 +01:00
hostfs
hostfs: Freeing an ERR_PTR in hostfs_fill_sb_common()
2016-09-30 10:18:39 +02:00
hpfs
hpfs: implement the show_options method
2016-06-01 12:15:54 -07:00
hugetlbfs
hugetlb: use same fault hash key for shared and private mappings
2019-06-11 12:23:52 +02:00
isofs
isofs: fix timestamps beyond 2027
2017-11-30 08:37:20 +00:00
jbd2
jbd2: fix compile warning when using JBUFFER_TRACE
2019-03-23 08:44:37 +01:00
jffs2
jffs2: fix use-after-free on symlink traversal
2019-05-16 19:45:01 +02:00
jfs
jfs: Fix inconsistency between memory allocation and ea_buf->max_size
2018-08-09 12:19:28 +02:00
kernfs
kernfs: Replace strncpy with memcpy
2018-12-13 09:21:29 +01:00
lockd
lockd: fix access beyond unterminated strings in prints
2018-11-21 09:27:36 +01:00
logfs
mm, fs: introduce mapping_gfp_constraint()
2015-11-06 17:50:42 -08:00
minix
…
ncpfs
ncpfs: fix build warning of strncpy
2019-03-23 08:44:21 +01:00
nfs
NFSv4: Handle the special Linux file open access mode
2019-08-04 09:34:50 +02:00
nfs_common
lockd: fix "list_add double add" caused by legacy signal interface
2018-02-03 17:04:28 +01:00
nfsd
nfsd: allow fh_want_write to be called twice
2019-06-22 08:18:20 +02:00
nilfs2
do d_instantiate/unlock_new_inode combinations safely
2018-05-30 07:48:52 +02:00
nls
…
notify
fanotify: fix logic of events on child
2018-04-24 09:32:11 +02:00
ntfs
mm, fs: introduce mapping_gfp_constraint()
2015-11-06 17:50:42 -08:00
ocfs2
fs/ocfs2: fix race in ocfs2_dentry_attach_lock()
2019-06-22 08:18:22 +02:00
omfs
…
openpromfs
…
overlayfs
ovl: modify ovl_permission() to do checks on two inodes
2019-07-10 09:56:36 +02:00
proc
coredump: fix race condition between mmget_not_zero()/get_task_mm() and core dumping
2019-06-22 08:18:27 +02:00
pstore
pstore/ram: Do not treat empty buffers as valid
2019-01-26 09:42:53 +01:00
qnx4
…
qnx6
…
quota
fs/quota: Fix spectre gadget in do_quotactl
2018-09-09 20:04:36 +02:00
ramfs
mm, fs: obey gfp_mapping for add_to_page_cache()
2015-10-16 11:42:28 -07:00
reiserfs
reiserfs: propagate errors from fill_with_dentries() properly
2018-11-27 16:08:00 +01:00
romfs
romfs: use different way to generate fsid for BLOCK or MTD
2017-06-17 06:39:38 +02:00
squashfs
squashfs: more metadata hardenings
2018-08-06 16:24:42 +02:00
sysfs
scsi: sysfs: Introduce sysfs_{un,}break_active_protection()
2018-09-05 09:18:40 +02:00
sysv
sysv: return 'err' instead of 0 in __sysv_write_inode
2018-12-17 21:55:09 +01:00
tracefs
tracefs: Fix refcount imbalance in start_creating()
2015-11-04 22:13:45 -05:00
ubifs
ubifs: Check for name being NULL while mounting
2018-10-13 09:11:34 +02:00
udf
udf: Fix incorrect final NOT_ALLOCATED (hole) extent length
2019-07-21 09:07:08 +02:00
ufs
ufs: fix braino in ufs_get_inode_gid() for solaris UFS flavour
2019-06-11 12:23:49 +02:00
xfs
xfs: don't fail when converting shortform attr to long form during ATTR_REPLACE
2019-01-26 09:42:52 +01:00
aio.c
aio: fix spectre gadget in lookup_ioctx
2018-12-21 14:09:50 +01:00
anon_inodes.c
…
attr.c
vfs: move permission checking into notify_change() for utimes(NULL)
2016-10-22 12:26:56 +02:00
bad_inode.c
…
binfmt_aout.c
…
binfmt_elf_fdpic.c
libnvdimm for 4.4:
2015-11-10 12:07:22 -08:00
binfmt_elf.c
binfmt_elf: switch to new creds when switching to new mm
2019-04-27 09:33:53 +02:00
binfmt_em86.c
…
binfmt_flat.c
fs/binfmt_flat.c: make load_flat_shared_library() work
2019-07-10 09:56:30 +02:00
binfmt_misc.c
fs/binfmt_misc.c: do not allow offset overflow
2018-07-03 11:21:26 +02:00
binfmt_script.c
Revert "exec: load_script: don't blindly truncate shebang string"
2019-02-20 10:13:20 +01:00
block_dev.c
fs/block_dev: always invalidate cleancache in invalidate_bdev()
2017-05-20 14:27:01 +02:00
buffer.c
fs: fix guard_bio_eod to check for real EOD errors
2019-04-27 09:33:49 +02:00
char_dev.c
chardev: add additional check for minor range overlap
2019-06-11 12:24:03 +02:00
compat_binfmt_elf.c
binfmt_elf: compat: avoid unused function warning
2018-02-25 11:03:51 +01:00
compat_ioctl.c
fs: compat: Remove warning from COMPATIBLE_IOCTL
2018-04-08 11:51:57 +02:00
compat.c
…
coredump.c
coredump: Ensure proper size of sparse core files
2017-07-05 14:37:20 +02:00
dax.c
dax: disable pmd mappings
2015-11-16 23:54:45 -08:00
dcache.c
Hang/soft lockup in d_invalidate with simultaneous calls
2019-04-03 06:23:19 +02:00
dcookies.c
…
direct-io.c
direct-io: Prevent NULL pointer access in submit_page_section
2017-10-18 09:20:42 +02:00
drop_caches.c
fs/drop_caches.c: avoid softlockups in drop_pagecache_sb()
2019-03-23 08:44:26 +01:00
eventfd.c
…
eventpoll.c
fs/epoll: drop ovflist branch prediction
2019-02-20 10:13:14 +01:00
exec.c
mm: replace get_user_pages() write/force parameters with gup_flags
2018-12-17 21:55:16 +01:00
fcntl.c
fs/fcntl: f_setown, avoid undefined behaviour
2018-01-31 12:06:11 +01:00
fhandle.c
fs/coredump: prevent fsuid=0 dumps into user-controlled directories
2016-04-12 09:08:58 -07:00
file_table.c
…
file.c
fs/file.c: initialize init_files.resize_wait
2019-04-27 09:33:49 +02:00
filesystems.c
…
fs_pin.c
…
fs_struct.c
…
fs-writeback.c
fs/writeback.c: use rcu_barrier() to wait for inflight wb switches going into workqueue when umount
2019-06-11 12:23:41 +02:00
inode.c
Abort file_remove_privs() for non-reg. files
2019-06-22 08:18:27 +02:00
internal.h
…
ioctl.c
…
Kconfig
dax: disable pmd mappings
2015-11-16 23:54:45 -08:00
Kconfig.binfmt
…
libfs.c
…
locks.c
locks: don't check for race with close when setting OFD lock
2018-01-17 09:35:27 +01:00
Makefile
ext4: promote ext4 over ext2 in the default probe order
2015-10-15 10:33:21 -04:00
mbcache.c
…
mount.h
mnt: In propgate_umount handle visiting mounts in any order
2017-07-21 07:44:57 +02:00
mpage.c
fs: add i_blocksize()
2017-06-14 13:16:24 +02:00
namei.c
namei: allow restricted O_CREAT of FIFOs and regular files
2018-12-01 09:46:41 +01:00
namespace.c
mount: Prevent MNT_DETACH from disconnecting locked mounts
2018-11-21 09:27:44 +01:00
no-block.c
…
nsfs.c
nsfs: mark dentry with DCACHE_RCUACCESS
2018-02-16 20:09:43 +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 12:24:13 +02:00
pipe.c
pipe: cap initial pipe capacity according to pipe-max-size limit
2018-05-26 08:48:51 +02:00
pnode.c
mnt: Make propagate_umount less slow for overlapping mount propagation trees
2017-07-21 07:44:58 +02:00
pnode.h
mnt: Add a per mount namespace limit on the number of mounts
2017-04-30 05:49:28 +02:00
posix_acl.c
tmpfs: clear S_ISGID when setting posix ACLs
2017-01-26 08:23:47 +01:00
proc_namespace.c
vfs: show_vfsstat: do not ignore errors from show_devname method
2016-04-12 09:08:55 -07:00
read_write.c
fs: stream_open - opener for stream-like files so that read and write can run simultaneously without deadlock
2019-06-11 12:24:13 +02:00
readdir.c
…
select.c
fs/select: add vmalloc fallback for select(2)
2018-01-31 12:06:09 +01:00
seq_file.c
Make file credentials available to the seqfile interfaces
2017-08-06 19:19:42 -07:00
signalfd.c
…
splice.c
vfs: fix uninitialized flags in splice_to_pipe()
2017-02-23 17:43:09 +01:00
stack.c
…
stat.c
ufs: restore maintaining ->i_blocks
2017-06-14 13:16:24 +02:00
statfs.c
…
super.c
fs: don't scan the inode cache before SB_BORN is set
2019-02-06 19:43:08 +01:00
sync.c
fs/sync.c: make sync_file_range(2) use WB_SYNC_NONE writeback
2015-11-06 17:50:42 -08:00
timerfd.c
timerfd: Protect the might cancel mechanism proper
2017-05-08 07:46:01 +02:00
userfaultfd.c
coredump: fix race condition between mmget_not_zero()/get_task_mm() and core dumping
2019-06-22 08:18:27 +02:00
utimes.c
vfs: move permission checking into notify_change() for utimes(NULL)
2016-10-22 12:26:56 +02:00
xattr.c
getxattr: use correct xattr length
2018-09-09 20:04:36 +02:00