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NeilBrown f39c010479 NFS: remove BUG possibility in nfs4_open_and_get_state 
commit 4fa2c54b5198d09607a534e2fd436581064587ed
    NFS: nfs4_do_open should add negative results to the dcache.

used "d_drop(); d_add();" to ensure that a dentry was hashed
as a negative cached entry.
This is not safe if the dentry has an non-NULL ->d_inode.
It will trigger a BUG_ON in d_instantiate().
In that case, d_delete() is needed.

Also, only d_add if the dentry is currently unhashed, it seems
pointless removed and re-adding it unchanged.

Reported-by: Christoph Hellwig <hch@infradead.org>
Fixes: 4fa2c54b5198d09607a534e2fd436581064587ed
Cc: Jeff Layton <jeff.layton@primarydata.com>
Link: http://lkml.kernel.org/r/20140908144525.GB19811@infradead.org
Signed-off-by: NeilBrown <neilb@suse.de>
Acked-by: Jeff Layton <jlayton@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2014-09-12 13:10:53 -04:00
..
9p
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2014-06-12 10:30:18 -07:00
adfs
adfs: add __printf verification, fix format/argument mismatches
2014-08-08 15:57:24 -07:00
affs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2014-06-12 10:30:18 -07:00
afs
AFS: Correctly assemble the client UUID
2014-07-29 10:14:36 -07:00
autofs4
autofs4: comment typo: remove a a doubled word
2014-08-08 15:57:19 -07:00
befs
fs/befs/linuxvfs.c: check superblock before dump operation
2014-08-08 15:57:20 -07:00
bfs
fs/bfs: use bfs prefix for dump_imap
2014-08-08 15:57:24 -07:00
btrfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
2014-08-27 09:14:17 -07:00
cachefiles
fs/cachefiles: replace kerror by pr_err
2014-06-06 16:08:14 -07:00
ceph
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client
2014-08-13 17:43:29 -06:00
cifs
Merge branch 'for-linus' of git://git.samba.org/sfrench/cifs-2.6
2014-08-20 18:33:21 -05:00
coda
fs/coda: use linux/uaccess.h
2014-08-08 15:57:20 -07:00
configfs
fs/configfs: use pr_fmt
2014-06-04 16:53:53 -07:00
cramfs
fs/cramfs/inode.c: use linux/uaccess.h
2014-08-08 15:57:25 -07:00
debugfs
fs: debugfs: remove trailing whitespace
2014-07-09 16:58:21 -07:00
devpts
fs/devpts/inode.c: convert printk to pr_foo()
2014-06-06 16:08:14 -07:00
dlm
fs/dlm/debug_fs.c: remove unnecessary null test before debugfs_remove
2014-08-08 15:57:27 -07:00
ecryptfs
write_iter variants of {__,}generic_file_aio_write()
2014-05-06 17:38:00 -04:00
efivarfs
fs/efivarfs/super.c: use static const for dentry_operations
2014-06-04 16:54:14 -07:00
efs
fs/efs/namei.c: return is not a function
2014-08-08 15:57:18 -07:00
exofs
fs/exofs/ore_raid.c: replace count*size kzalloc by kcalloc
2014-08-08 15:57:24 -07:00
exportfs
fs/exportfs/expfs.c: kernel-doc warning fixes
2014-06-04 16:54:14 -07:00
ext2
fs/ext2/super.c: Drop memory allocation cast
2014-07-15 22:40:22 +02:00
ext3
ext3: Count internal journal as bsddf overhead in ext3_statfs
2014-08-19 23:16:51 +02:00
ext4
ext4: fix same-dir rename when inline data directory overflows
2014-08-28 22:22:29 -04:00
f2fs
f2fs: reposition unlock_new_inode to prevent accessing invalid inode
2014-09-02 00:22:24 -07:00
fat
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2014-06-12 10:30:18 -07:00
freevxfs
Major changes for 3.14 include support for the newly added ZERO_RANGE
2014-04-04 15:39:39 -07:00
fscache
fs/fscache: make ctl_table static
2014-08-06 18:01:12 -07:00
fuse
switch iov_iter_get_pages() to passing maximal number of pages
2014-08-07 14:40:11 -04:00
gfs2
Merge branch 'sched/urgent' into sched/core, to merge fixes before applying new changes
2014-07-28 10:03:00 +02:00
hfs
write_iter variants of {__,}generic_file_aio_write()
2014-05-06 17:38:00 -04:00
hfsplus
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2014-06-12 10:30:18 -07:00
hostfs
hostfs: support rename flags
2014-08-07 14:40:09 -04:00
hpfs
fs/hpfs/dnode.c: fix suspect code indent
2014-08-08 15:57:22 -07:00
hppfs
…
hugetlbfs
fs/hugetlbfs/inode.c: remove null test before kfree
2014-06-04 16:54:11 -07:00
isofs
isofs: Fix unbounded recursion when processing relocated directories
2014-08-19 18:29:30 +02:00
jbd
fs/jbd/revoke.c: replace shift loop by ilog2
2014-05-21 10:26:13 +02:00
jbd2
jbd2: fix descriptor block size handling errors with journal_csum
2014-08-28 22:22:29 -04:00
jffs2
MTD updates for 3.17-rc1
2014-08-08 18:13:21 -07:00
jfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2014-06-12 10:30:18 -07:00
kernfs
Merge 3.16-rc6 into driver-core-next
2014-07-21 10:07:25 -07:00
lockd
fs: lockd: Use ktime_get_ns()
2014-07-23 15:01:44 -07:00
logfs
fs/logfs/readwrite.c: kernel-doc warning fixes
2014-08-06 18:01:12 -07:00
minix
minix zmap block counts calculation fix
2014-08-08 15:57:20 -07:00
ncpfs
fs/ncpfs/getopt.c: replace simple_strtoul by kstrtoul
2014-06-04 16:54:21 -07:00
nfs
NFS: remove BUG possibility in nfs4_open_and_get_state
2014-09-12 13:10:53 -04:00
nfs_common
fs/nfs_common/nfsacl.c: move EXPORT symbol after functions
2014-07-12 18:43:42 -04:00
nfsd
Merge branch 'for-3.17' of git://linux-nfs.org/~bfields/linux
2014-08-09 14:31:18 -07:00
nilfs2
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2014-08-11 11:44:11 -07:00
nls
…
notify
list: fix order of arguments for hlist_add_after(_rcu)
2014-08-06 18:01:24 -07:00
ntfs
ntfs: kernel-doc warning fixes
2014-08-06 18:01:12 -07:00
ocfs2
ocfs2: quorum: add a log for node not fenced
2014-08-29 16:28:17 -07:00
omfs
fs/omfs/inode.c: replace count*size kzalloc by kcalloc
2014-08-08 15:57:25 -07:00
openpromfs
fs: push sync_filesystem() down to the file system's remount_fs()
2014-03-13 10:14:33 -04:00
proc
Revert "proc: Point /proc/{mounts,net} at /proc/thread-self/{mounts,net} instead of /proc/self/{mounts,net}"
2014-08-10 21:24:59 -07:00
pstore
fs/pstore/ram_core.c: replace count*size kmalloc by kmalloc_array
2014-08-08 15:57:25 -07:00
qnx4
fs: push sync_filesystem() down to the file system's remount_fs()
2014-03-13 10:14:33 -04:00
qnx6
fs/qnx6: update debugging to current functions
2014-08-08 15:57:26 -07:00
quota
fs/quota: kernel-doc warning fixes
2014-07-15 22:40:23 +02:00
ramfs
fs/ramfs/file-nommu.c: replace count*size kzalloc by kcalloc
2014-08-08 15:57:18 -07:00
reiserfs
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
2014-08-13 17:45:40 -06:00
romfs
fs/romfs/super.c: add blank line after declarations
2014-08-08 15:57:25 -07:00
squashfs
fs/squashfs/super.c: logging cleanup
2014-08-06 18:01:13 -07:00
sysfs
kernfs: move the last knowledge of sysfs out from kernfs
2014-06-03 08:11:18 -07:00
sysv
write_iter variants of {__,}generic_file_aio_write()
2014-05-06 17:38:00 -04:00
ubifs
UBIFS: Add log overlap assertions
2014-07-31 15:52:51 +03:00
udf
udf: avoid unneeded up_write when fail to add entry in ->symlink
2014-08-19 18:29:30 +02:00
ufs
ufs: fix deadlocks introduced by sb mutex merge
2014-09-07 13:26:39 -04:00
xfs
xfs: trim eofblocks before collapse range
2014-09-02 12:12:53 +10:00
aio.c
aio: block exit_aio() until all context requests are completed
2014-09-04 16:54:47 -04:00
anon_inodes.c
vfs: Allocate anon_inode_inode in anon_inode_init()
2014-03-27 09:52:54 -07:00
attr.c
fs,userns: Change inode_capable to capable_wrt_inode_uidgid
2014-06-10 13:57:22 -07:00
bad_inode.c
bad_inode: add ->rename2()
2014-08-07 14:40:09 -04:00
binfmt_aout.c
…
binfmt_elf_fdpic.c
…
binfmt_elf.c
Merge branch 'x86/vdso' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into next
2014-06-05 08:05:29 -07:00
binfmt_em86.c
…
binfmt_flat.c
fs/binfmt_flat.c: make old_reloc() static
2014-06-04 16:54:21 -07:00
binfmt_misc.c
binfmt_misc: add missing 'break' statement
2014-04-03 16:21:16 -07:00
binfmt_script.c
…
binfmt_som.c
…
block_dev.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2014-06-12 10:30:18 -07:00
buffer.c
sched: Remove proliferation of wait_on_bit() action functions
2014-07-16 15:10:39 +02:00
char_dev.c
…
compat_binfmt_elf.c
…
compat_ioctl.c
Bluetooth: Move HCI socket definitions into its own header file
2014-07-11 13:53:04 +03:00
compat.c
locks: rename file-private locks to "open file description locks"
2014-04-22 08:23:58 -04:00
coredump.c
coredump: fix the setting of PF_DUMPCORE
2014-07-23 15:10:54 -07:00
dcache.c
fs: mark __d_obtain_alias static
2014-08-07 14:40:11 -04:00
dcookies.c
…
direct-io.c
switch iov_iter_get_pages() to passing maximal number of pages
2014-08-07 14:40:11 -04:00
drop_caches.c
fs: convert use of typedef ctl_table to struct ctl_table
2014-06-06 16:08:16 -07:00
eventfd.c
…
eventpoll.c
epoll: fix use-after-free in eventpoll_release_file
2014-06-16 17:21:59 -10:00
exec.c
fork/exec: cleanup mm initialization
2014-08-08 15:57:23 -07:00
fcntl.c
shm: add sealing API
2014-08-08 15:57:31 -07:00
fhandle.c
…
file_table.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2014-06-12 10:30:18 -07:00
file.c
fs/file.c: don't open-code kvfree()
2014-05-06 17:31:10 -04:00
filesystems.c
sys_sysfs: Add CONFIG_SYSFS_SYSCALL
2014-04-03 16:21:05 -07:00
fs_pin.c
make fs/{namespace,super}.c forget about acct.h
2014-08-07 14:40:09 -04:00
fs_struct.c
…
fs-writeback.c
sched: Remove proliferation of wait_on_bit() action functions
2014-07-16 15:10:39 +02:00
inode.c
mm: allow drivers to prevent new writable mappings
2014-08-08 15:57:31 -07:00
internal.h
make fs/{namespace,super}.c forget about acct.h
2014-08-07 14:40:09 -04:00
ioctl.c
…
Kconfig
…
Kconfig.binfmt
…
libfs.c
fs/libfs.c: add generic data flush to fsync
2014-06-04 16:53:55 -07:00
locks.c
locks: pass correct "before" pointer to locks_unlink_lock in generic_add_lease
2014-08-22 09:58:22 -04:00
Makefile
take fs_pin stuff to fs/*
2014-08-07 14:40:08 -04:00
mbcache.c
fs/mbcache: replace __builtin_log2() with ilog2()
2014-06-25 22:08:29 -04:00
mount.h
death to mnt_pinned
2014-08-07 14:40:09 -04:00
mpage.c
fs/block_dev.c: add bdev_read_page() and bdev_write_page()
2014-06-04 16:54:02 -07:00
namei.c
namei: trivial fix to vfs_rename_dir comment
2014-08-07 14:40:10 -04:00
namespace.c
fix EBUSY on umount() from MNT_SHRINKABLE
2014-08-30 18:32:05 -04:00
no-block.c
…
open.c
vfs: fix check for fallocate on active swapfile
2014-08-01 02:36:04 -04:00
pipe.c
new helper: copy_page_from_iter()
2014-05-06 17:39:42 -04:00
pnode.c
get rid of propagate_umount() mistakenly treating slaves as busy.
2014-08-30 18:31:41 -04:00
pnode.h
smarter propagate_mnt()
2014-04-01 23:19:08 -04:00
posix_acl.c
posix_acl: handle NULL ACL in posix_acl_equiv_mode
2014-05-06 13:58:42 -04:00
proc_namespace.c
namespaces: Use task_lock and not rcu to protect nsproxy
2014-07-29 18:08:50 -07:00
read_write.c
switch simple generic_file_aio_read() users to ->read_iter()
2014-05-06 17:37:55 -04:00
readdir.c
fanotify: create FAN_ACCESS event for readdir
2014-06-04 16:53:52 -07:00
select.c
…
seq_file.c
fs/seq_file: fallback to vmalloc allocation
2014-07-03 09:21:54 -07:00
signalfd.c
…
splice.c
Merge commit '9f12600fe425bc28f0ccba034a77783c09c15af4' into for-linus
2014-06-12 00:28:09 -04:00
stack.c
…
stat.c
…
statfs.c
…
super.c
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
2014-08-13 17:45:40 -06:00
sync.c
Export sync_filesystem() for modular ->remount_fs() use
2014-09-05 08:16:21 -07:00
timerfd.c
timerfd: Use ktime_mono_to_real()
2014-07-23 10:18:02 -07:00
utimes.c
…
xattr.c
simple_xattr: permit 0-size extended attributes
2014-07-23 15:10:55 -07:00