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Chuck Lever e2fc17fcc5 NFSD: Fix possible sleep during nfsd4_release_lockowner() 
commit ce3c4ad7f4ce5db7b4f08a1e237d8dd94b39180b upstream.

nfsd4_release_lockowner() holds clp->cl_lock when it calls
check_for_locks(). However, check_for_locks() calls nfsd_file_get()
/ nfsd_file_put() to access the backing inode's flc_posix list, and
nfsd_file_put() can sleep if the inode was recently removed.

Let's instead rely on the stateowner's reference count to gate
whether the release is permitted. This should be a reliable
indication of locks-in-use since file lock operations and
->lm_get_owner take appropriate references, which are released
appropriately when file locks are removed.

Reported-by: Dai Ngo <dai.ngo@oracle.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-06-06 08:43:42 +02:00
..
9p
Revert "fs/9p: search open fids first"
2022-02-08 18:34:04 +01:00
adfs
…
affs
…
afs
afs: Fix afs_getattr() to refetch file status if callback break occurred
2022-05-25 09:57:37 +02:00
autofs
autofs: fix wait name hash calculation in autofs_wait()
2021-10-20 21:09:02 -04:00
befs
isystem: ship and use stdarg.h
2021-08-19 09:02:55 +09:00
bfs
…
btrfs
btrfs: always log symlinks in full mode
2022-05-12 12:30:20 +02:00
cachefiles
cachefiles: Change %p in format strings to something else
2021-08-27 13:34:02 +01:00
ceph
ceph: fix setting of xattrs on async created inodes
2022-05-18 10:26:55 +02:00
cifs
cifs: destage any unwritten data to the server before calling copychunk_write
2022-05-09 09:14:40 +02:00
coda
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configfs
configfs: fix a race in configfs_{,un}register_subsystem()
2022-03-02 11:48:02 +01:00
cramfs
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crypto
fscrypt: allow 256-bit master keys with AES-256-XTS
2021-11-18 19:16:11 +01:00
debugfs
debugfs: lockdown: Allow reading debugfs files that are not world readable
2022-01-27 11:03:55 +01:00
devpts
fsnotify: fix fsnotify hooks in pseudo filesystems
2022-02-01 17:27:01 +01:00
dlm
fs: dlm: filter user dlm messages for kernel locks
2022-01-27 11:04:23 +01:00
ecryptfs
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efivarfs
…
efs
…
erofs
iomap: Add done_before argument to iomap_dio_rw
2022-05-01 17:22:32 +02:00
exfat
exfat: check if cluster num is valid
2022-06-06 08:43:37 +02:00
exportfs
…
ext2
ext2: correct max file size computing
2022-04-08 14:23:35 +02:00
ext4
ext4: fix bug_on in start_this_handle during umount filesystem
2022-05-09 09:14:39 +02:00
f2fs
iov_iter: Turn iov_iter_fault_in_readable into fault_in_iov_iter_readable
2022-05-01 17:22:28 +02:00
fat
linux-kselftest-kunit-5.15-rc1
2021-09-02 12:32:12 -07:00
freevxfs
…
fscache
fscache: Remove an unused static variable
2021-10-04 22:13:12 +01:00
fuse
iov_iter: Turn iov_iter_fault_in_readable into fault_in_iov_iter_readable
2022-05-01 17:22:28 +02:00
gfs2
gfs2: Disable page faults during lockless buffered reads
2022-05-25 09:57:24 +02:00
hfs
hfs: add lock nesting notation to hfs_find_init
2021-07-15 10:13:49 -07:00
hfsplus
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hostfs
hostfs: support splice_write
2021-08-26 22:28:02 +02:00
hpfs
hpfs: use iomap_fiemap to implement ->fiemap
2021-07-27 11:00:36 +02:00
hugetlbfs
mm, hugetlb: allow for "high" userspace addresses
2022-04-27 14:38:57 +02:00
iomap
iomap: Add done_before argument to iomap_dio_rw
2022-05-01 17:22:32 +02:00
isofs
isofs: Fix out of bound access for corrupted isofs image
2021-11-12 15:05:50 +01:00
jbd2
jbd2: fix a potential race while discarding reserved buffers after an abort
2022-04-27 14:39:02 +02:00
jffs2
jffs2: fix memory leak in jffs2_scan_medium
2022-04-08 14:22:53 +02:00
jfs
jfs: prevent NULL deref in diFree
2022-04-13 20:59:13 +02:00
kernfs
kernfs: don't create a negative dentry if inactive node exists
2021-10-04 10:27:18 +02:00
ksmbd
ksmbd: set fixed sector size to FS_SECTOR_SIZE_INFORMATION
2022-05-09 09:14:40 +02:00
lockd
lockd: fix failure to cleanup client locks
2022-02-05 12:38:57 +01:00
minix
minix: fix bug when opening a file with O_DIRECT
2022-04-13 20:59:10 +02:00
netfs
netfs: fix parameter of cleanup()
2021-12-29 12:28:59 +01:00
nfs
NFS: Memory allocation failures are not server fatal errors
2022-06-06 08:43:42 +02:00
nfs_common
nfs: Fix kerneldoc warning shown up by W=1
2021-10-04 22:02:17 +01:00
nfsd
NFSD: Fix possible sleep during nfsd4_release_lockowner()
2022-06-06 08:43:42 +02:00
nilfs2
nilfs2: fix lockdep warnings during disk space reclamation
2022-05-25 09:57:26 +02:00
nls
…
notify
fanotify: Fix stale file descriptor in copy_event_to_user()
2022-02-05 12:38:59 +01:00
ntfs
iov_iter: Turn iov_iter_fault_in_readable into fault_in_iov_iter_readable
2022-05-01 17:22:28 +02:00
ntfs3
fs/ntfs3: validate BOOT sectors_per_clusters
2022-06-06 08:43:40 +02:00
ocfs2
ocfs2: fix crash when mount with quota enabled
2022-04-08 14:22:56 +02:00
omfs
…
openpromfs
…
orangefs
orangefs: Fix the size of a memory allocation in orangefs_bufmap_alloc()
2022-01-20 09:13:13 +01:00
overlayfs
ovl: fix NULL pointer dereference in copy up warning
2022-02-05 12:38:59 +01:00
proc
procfs: prevent unprivileged processes accessing fdinfo dir
2022-05-18 10:26:50 +02:00
pstore
pstore: Don't use semaphores in always-atomic-context code
2022-04-08 14:23:01 +02:00
qnx4
qnx4: work around gcc false positive warning bug
2021-09-21 08:36:48 -07:00
qnx6
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quota
quota: make dquot_quota_sync return errors from ->sync_fs
2022-02-23 12:03:06 +01:00
ramfs
…
reiserfs
Kbuild updates for v5.15
2021-09-03 15:33:47 -07:00
romfs
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smbfs_common
cifs: Fix crash on unload of cifs_arc4.ko
2021-12-14 10:57:12 +01:00
squashfs
squashfs: use bvec_virt
2021-08-16 10:50:32 -06:00
sysfs
sysfs: Allow deferred execution of iomem_get_mapping()
2021-08-06 13:05:28 +02:00
sysv
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tracefs
tracefs: Set the group ownership in apply_options() not parse_options()
2022-03-02 11:48:05 +01:00
ubifs
ubifs: rename_whiteout: correct old_dir size computing
2022-04-08 14:24:08 +02:00
udf
udf: Avoid using stale lengthOfImpUse
2022-05-15 20:18:52 +02:00
ufs
isystem: ship and use stdarg.h
2021-08-19 09:02:55 +09:00
unicode
…
vboxsf
vboxfs: fix broken legacy mount signature checking
2021-09-27 11:26:21 -07:00
verity
fs-verity: fix signed integer overflow with i_size near S64_MAX
2021-09-22 10:56:34 -07:00
xfs
iomap: Add done_before argument to iomap_dio_rw
2022-05-01 17:22:32 +02:00
zonefs
zonefs: Clear inode information flags on inode creation
2022-05-09 09:14:41 +02:00
aio.c
aio: Fix incorrect usage of eventfd_signal_allowed()
2021-12-14 10:57:22 +01:00
anon_inodes.c
…
attr.c
fs: handle circular mappings correctly
2021-11-25 09:48:46 +01:00
bad_inode.c
vfs: add rcu argument to ->get_acl() callback
2021-08-18 22:08:24 +02:00
binfmt_aout.c
binfmt: a.out: Fix bogus semicolon
2021-09-05 10:15:05 -07:00
binfmt_elf_fdpic.c
coredump: Snapshot the vmas in do_coredump
2022-04-08 14:24:17 +02:00
binfmt_elf.c
coredump: Use the vma snapshot in fill_files_note
2022-04-08 14:24:18 +02:00
binfmt_flat.c
…
binfmt_misc.c
…
binfmt_script.c
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buffer.c
mm: fs: fix lru_cache_disabled race in bh_lru
2022-04-08 14:22:54 +02:00
char_dev.c
…
compat_binfmt_elf.c
…
coredump.c
coredump: Use the vma snapshot in fill_files_note
2022-04-08 14:24:18 +02:00
d_path.c
d_path: make 'prepend()' fill up the buffer exactly on overflow
2021-09-02 10:07:29 -07:00
dax.c
New code for 5.15:
2021-08-31 11:13:35 -07:00
dcache.c
…
direct-io.c
…
drop_caches.c
fs: drop_caches: fix skipping over shadow cache inodes
2021-09-03 09:58:10 -07:00
eventfd.c
eventfd: Export eventfd_wake_count to modules
2021-09-06 07:20:56 -04:00
eventpoll.c
ARM development updates for 5.15:
2021-09-09 13:25:49 -07:00
exec.c
exec: Force single empty string when argv is empty
2022-04-08 14:23:01 +02:00
fcntl.c
Merge branch 'akpm' (patches from Andrew)
2021-09-03 10:08:28 -07:00
fhandle.c
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file_table.c
SUNRPC: Ensure we flush any closed sockets before xs_xprt_free()
2022-05-18 10:26:57 +02:00
file.c
fs: fix fd table size alignment properly
2022-04-08 14:23:54 +02:00
filesystems.c
fs: simplify get_filesystem_list / get_all_fs_names
2021-08-23 01:25:40 -04:00
fs_context.c
vfs: fs_context: fix up param length parsing in legacy_parse_param
2022-01-20 09:13:14 +01:00
fs_parser.c
namei: Standardize callers of filename_lookup()
2021-09-07 16:07:47 -04:00
fs_pin.c
…
fs_struct.c
…
fs_types.c
…
fs-writeback.c
writeback: Avoid skipping inode writeback
2022-05-18 10:26:56 +02:00
fsopen.c
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init.c
…
inode.c
fs: export an inode_update_time helper
2021-11-25 09:49:08 +01:00
internal.h
block: simplify the block device syncing code
2022-04-27 14:38:50 +02:00
io_uring.c
io_uring: arm poll for non-nowait files
2022-05-25 09:57:21 +02:00
io-wq.c
io-wq: drop wqe lock before creating new worker
2021-12-22 09:32:51 +01:00
io-wq.h
io-wq: provide a way to limit max number of workers
2021-08-29 07:55:55 -06:00
ioctl.c
fs: fix an infinite loop in iomap_fiemap
2022-05-25 09:57:26 +02:00
Kconfig
4 cifs/smb3 fixes, one for DFS reconnect, and one to begin creating common headers for server and client and the other two to rename the cifs_common directory to smbfs_common to be more consistent ie change use of the name cifs to smb which is more accurate
2021-09-12 10:10:21 -07:00
Kconfig.binfmt
binfmt: remove support for em86 (alpha only)
2021-07-25 22:33:03 -07:00
kernel_read_file.c
vfs: check fd has read access in kernel_read_file_from_fd()
2021-10-18 20:22:03 -10:00
libfs.c
…
locks.c
Revert "memcg: enable accounting for file lock caches"
2021-09-07 11:21:48 -07:00
Makefile
4 cifs/smb3 fixes, one for DFS reconnect, and one to begin creating common headers for server and client and the other two to rename the cifs_common directory to smbfs_common to be more consistent ie change use of the name cifs to smb which is more accurate
2021-09-12 10:10:21 -07:00
mbcache.c
…
mount.h
…
mpage.c
…
namei.c
VFS: filename_create(): fix incorrect intent.
2022-04-27 14:38:57 +02:00
namespace.c
fs/mount_setattr: always cleanup mount_kattr
2022-01-05 12:42:39 +01:00
no-block.c
…
nsfs.c
…
open.c
mm, thp: fix incorrect unmap behavior for private pages
2021-11-18 19:17:17 +01:00
pipe.c
pipe: Fix missing lock in pipe_resize_ring()
2022-06-06 08:43:37 +02:00
pnode.c
…
pnode.h
…
posix_acl.c
ovl: enable RCU'd ->get_acl()
2021-08-18 22:08:24 +02:00
proc_namespace.c
…
read_write.c
fs: clean up after mandatory file locking support removal
2021-08-24 07:52:45 -04:00
readdir.c
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remap_range.c
fs: remove mandatory file locking support
2021-08-23 06:15:36 -04:00
select.c
select: Fix indefinitely sleeping task in poll_schedule_timeout()
2022-01-29 10:58:25 +01:00
seq_file.c
seq_file: disallow extremely large seq buffer allocations
2021-07-19 17:18:48 -07:00
signalfd.c
signalfd: use wake_up_pollfree()
2021-12-14 10:57:15 +01:00
splice.c
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stack.c
…
stat.c
stat: fix inconsistency between struct stat and struct compat_stat
2022-04-27 14:38:57 +02:00
statfs.c
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super.c
vfs: make freeze_super abort when sync_filesystem returns error
2022-02-23 12:03:05 +01:00
sync.c
vfs: make sync_filesystem return errors from ->sync_fs
2022-04-27 14:38:50 +02:00
timerfd.c
timerfd: Provide timerfd_resume()
2021-08-10 17:57:22 +02:00
userfaultfd.c
userfaultfd: fix a race between writeprotect and exit_mmap()
2021-10-18 20:22:02 -10:00
utimes.c
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xattr.c
…