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linux/fs
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Amir Goldstein 4396a73115 fsnotify: fix sb_connectors leak 
Fix a leak in s_fsnotify_connectors counter in case of a race between
concurrent add of new fsnotify mark to an object.

The task that lost the race fails to drop the counter before freeing
the unused connector.

Following umount() hangs in fsnotify_sb_delete()/wait_var_event(),
because s_fsnotify_connectors never drops to zero.

Fixes: ec44610fe2 ("fsnotify: count all objects with attached connectors")
Reported-by: Murphy Zhou <jencce.kernel@gmail.com>
Link: https://lore.kernel.org/linux-fsdevel/20210907063338.ycaw6wvhzrfsfdlp@xzhoux.usersys.redhat.com/
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-09-10 09:46:48 -07:00
..
9p
Merge tag 'ovl-update-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs
2021-09-02 09:21:27 -07:00
adfs
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affs
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afs
fs: remove mandatory file locking support
2021-08-23 06:15:36 -04:00
autofs
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befs
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bfs
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btrfs
Merge tag 'for-5.15-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
2021-09-09 16:09:56 -07:00
cachefiles
cachefiles: Change %p in format strings to something else
2021-08-27 13:34:02 +01:00
ceph
Merge tag 'ceph-for-5.15-rc1' of git://github.com/ceph/ceph-client
2021-09-08 15:50:32 -07:00
cifs
Merge tag '5.15-rc-smb3-fixes-part1' of git://git.samba.org/sfrench/cifs-2.6
2021-08-31 09:22:37 -07:00
cifs_common
cifs: cifs_md4 convert to SPDX identifier
2021-08-25 15:51:52 -05:00
coda
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configfs
configfs: fix a race in configfs_lookup()
2021-08-25 07:58:49 +02:00
cramfs
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crypto
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debugfs
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devpts
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dlm
fs: dlm: avoid comms shutdown delay in release_lockspace
2021-09-01 11:29:14 -05:00
ecryptfs
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efivarfs
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efs
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erofs
Merge tag 'libnvdimm-for-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
2021-09-09 11:39:57 -07:00
exfat
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exportfs
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ext2
Merge tag 'libnvdimm-for-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
2021-09-09 11:39:57 -07:00
ext4
Merge tag 'libnvdimm-for-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
2021-09-09 11:39:57 -07:00
f2fs
Merge tag 'f2fs-for-5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs
2021-09-04 10:48:47 -07:00
fat
Merge tag 'linux-kselftest-kunit-5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
2021-09-02 12:32:12 -07:00
freevxfs
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fscache
fscache: Use refcount_t for the cookie refcount instead of atomic_t
2021-08-27 13:34:03 +01:00
fuse
Merge tag 'fuse-update-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse
2021-09-07 12:18:29 -07:00
gfs2
Merge branch 'work.gfs2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2021-09-09 12:45:26 -07:00
hfs
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hfsplus
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hostfs
hostfs: support splice_write
2021-08-26 22:28:02 +02:00
hpfs
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hugetlbfs
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iomap
iomap: standardize tracepoint formatting and storage
2021-08-26 09:18:53 -07:00
isofs
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jbd2
ext4: Support for checksumming from journal triggers
2021-08-30 23:36:50 -04:00
jffs2
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jfs
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kernfs
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ksmbd
ksmbd: fix control flow issues in sid_to_id()
2021-09-08 17:16:13 -05:00
lockd
Merge tag 'nfs-for-5.15-1' of git://git.linux-nfs.org/projects/anna/linux-nfs
2021-09-04 10:25:26 -07:00
minix
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netfs
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nfs
Merge tag 'nfs-for-5.15-1' of git://git.linux-nfs.org/projects/anna/linux-nfs
2021-09-04 10:25:26 -07:00
nfs_common
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nfsd
Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
2021-09-02 15:09:46 -07:00
nilfs2
Merge branch 'akpm' (patches from Andrew)
2021-09-08 12:55:35 -07:00
nls
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notify
fsnotify: fix sb_connectors leak
2021-09-10 09:46:48 -07:00
ntfs
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ntfs3
Merge git://github.com/Paragon-Software-Group/linux-ntfs3
2021-09-04 11:15:50 -07:00
ocfs2
Merge branch 'akpm' (patches from Andrew)
2021-09-03 10:08:28 -07:00
omfs
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openpromfs
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orangefs
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overlayfs
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proc
Merge branch 'akpm' (patches from Andrew)
2021-09-08 12:55:35 -07:00
pstore
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qnx4
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qnx6
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quota
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ramfs
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reiserfs
Merge tag 'kbuild-v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
2021-09-03 15:33:47 -07:00
romfs
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squashfs
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sysfs
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sysv
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tracefs
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ubifs
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udf
udf_get_extendedattr() had no boundary checks.
2021-08-23 13:35:19 +02:00
ufs
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unicode
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vboxsf
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verity
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xfs
Merge tag 'libnvdimm-for-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
2021-09-09 11:39:57 -07:00
zonefs
Merge tag 'hole_punch_for_v5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
2021-08-30 10:24:50 -07:00
aio.c
eventfd: Make signal recursion protection a task bit
2021-08-28 01:33:02 +02:00
anon_inodes.c
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attr.c
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bad_inode.c
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binfmt_aout.c
binfmt: a.out: Fix bogus semicolon
2021-09-05 10:15:05 -07:00
binfmt_elf_fdpic.c
binfmt: remove in-tree usage of MAP_DENYWRITE
2021-09-03 18:42:01 +02:00
binfmt_elf.c
binfmt: remove in-tree usage of MAP_DENYWRITE
2021-09-03 18:42:01 +02:00
binfmt_flat.c
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binfmt_misc.c
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binfmt_script.c
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block_dev.c
Merge tag 'io_uring-bio-cache.5-2021-08-30' of git://git.kernel.dk/linux-block
2021-08-30 19:30:30 -07:00
buffer.c
Merge branch 'exit-cleanups-for-v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2021-09-01 14:52:05 -07:00
char_dev.c
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compat_binfmt_elf.c
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coredump.c
coredump: fix memleak in dump_vma_snapshot()
2021-09-08 11:50:27 -07:00
d_path.c
d_path: make 'prepend()' fill up the buffer exactly on overflow
2021-09-02 10:07:29 -07:00
dax.c
Merge tag 'iomap-5.15-merge-4' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
2021-08-31 11:13:35 -07:00
dcache.c
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direct-io.c
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drop_caches.c
fs: drop_caches: fix skipping over shadow cache inodes
2021-09-03 09:58:10 -07:00
eventfd.c
eventfd: Make signal recursion protection a task bit
2021-08-28 01:33:02 +02:00
eventpoll.c
Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm
2021-09-09 13:25:49 -07:00
exec.c
Merge tag 'denywrite-for-5.15' of git://github.com/davidhildenbrand/linux
2021-09-04 11:35:47 -07:00
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
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file.c
Merge tag 'fs.close_range.v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux
2021-08-31 12:00:07 -07:00
filesystems.c
fs: simplify get_filesystem_list / get_all_fs_names
2021-08-23 01:25:40 -04:00
fs_context.c
memcg: charge fs_context and legacy_fs_context
2021-09-03 09:58:12 -07:00
fs_parser.c
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fs_pin.c
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fs_struct.c
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fs_types.c
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fs-writeback.c
Merge branch 'akpm' (patches from Andrew)
2021-09-03 10:08:28 -07:00
fsopen.c
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init.c
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inode.c
Merge branch 'akpm' (patches from Andrew)
2021-09-03 10:08:28 -07:00
internal.h
Merge tag 'iomap-5.15-merge-4' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
2021-08-31 11:13:35 -07:00
io_uring.c
Merge branch 'work.iov_iter' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2021-09-09 12:13:46 -07:00
io-wq.c
io-wq: make worker creation resilient against signals
2021-09-02 11:12:19 -06:00
io-wq.h
io-wq: provide a way to limit max number of workers
2021-08-29 07:55:55 -06:00
ioctl.c
Merge tag 'vfs-5.15-merge-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
2021-08-31 11:06:32 -07:00
Kconfig
Merge tag 's390-5.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
2021-09-09 12:55:12 -07:00
Kconfig.binfmt
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kernel_read_file.c
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libfs.c
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locks.c
Revert "memcg: enable accounting for file lock caches"
2021-09-07 11:21:48 -07:00
Makefile
Merge git://github.com/Paragon-Software-Group/linux-ntfs3
2021-09-04 11:15:50 -07:00
mbcache.c
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mount.h
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mpage.c
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namei.c
Merge branch 'akpm' (patches from Andrew)
2021-09-03 10:08:28 -07:00
namespace.c
Merge branch 'akpm' (patches from Andrew)
2021-09-03 10:08:28 -07:00
no-block.c
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nsfs.c
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open.c
fs: remove mandatory file locking support
2021-08-23 06:15:36 -04:00
pipe.c
Revert "mm/gup: remove try_get_page(), call try_get_compound_head() directly"
2021-09-07 11:03:45 -07:00
pnode.c
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pnode.h
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posix_acl.c
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proc_namespace.c
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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
Revert "memcg: enable accounting for pollfd and select bits arrays"
2021-09-07 11:26:23 -07:00
seq_file.c
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signalfd.c
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splice.c
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stack.c
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stat.c
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statfs.c
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super.c
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sync.c
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timerfd.c
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userfaultfd.c
userfaultfd: prevent concurrent API initialization
2021-09-03 09:58:16 -07:00
utimes.c
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xattr.c
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