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Jan Kara d868597b71 mbcache: Avoid nesting of cache->c_list_lock under bit locks 
commit 5fc4cbd9fde5d4630494fd6ffc884148fb618087 upstream.

Commit 307af6c87937 ("mbcache: automatically delete entries from cache
on freeing") started nesting cache->c_list_lock under the bit locks
protecting hash buckets of the mbcache hash table in
mb_cache_entry_create(). This causes problems for real-time kernels
because there spinlocks are sleeping locks while bitlocks stay atomic.
Luckily the nesting is easy to avoid by holding entry reference until
the entry is added to the LRU list. This makes sure we cannot race with
entry deletion.

Cc: stable@kernel.org
Fixes: 307af6c87937 ("mbcache: automatically delete entries from cache on freeing")
Reported-by: Mike Galbraith <efault@gmx.de>
Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20220908091032.10513-1-jack@suse.cz
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-18 11:41:59 +01:00
..
9p
9p: missing chunk of "fs/9p: Don't update file type when updating file attributes"
2022-06-22 14:11:02 +02:00
adfs
…
affs
fs/affs: release old buffer head on error path
2021-03-04 10:26:48 +01:00
afs
afs: Fix fileserver probe RTT handling
2022-12-08 11:23:03 +01:00
autofs
autofs: fix a leak in autofs_expire_indirect()
2019-10-25 00:03:11 -04:00
befs
…
bfs
bfs: don't use WARNING: string when it's just info.
2021-01-06 14:48:39 +01:00
btrfs
btrfs: replace strncpy() with strscpy()
2023-01-18 11:41:52 +01:00
cachefiles
cachefiles: Handle readpage error correctly
2020-11-05 11:43:36 +01:00
ceph
ceph: avoid putting the realm twice when decoding snaps fails
2022-12-08 11:23:00 +01:00
cifs
cifs: fix missing display of three mount options
2023-01-18 11:41:49 +01:00
coda
…
configfs
configfs: fix possible memory leak in configfs_create_dir()
2023-01-18 11:41:09 +01:00
cramfs
cramfs: fix usage on non-MTD device
2019-11-23 21:44:49 -05:00
crypto
fscrypt: add fscrypt_symlink_getattr() for computing st_size
2021-09-12 08:56:38 +02:00
debugfs
debugfs: fix error when writing negative value to atomic_t debugfs file
2023-01-18 11:40:56 +01:00
devpts
fsnotify: fix fsnotify hooks in pseudo filesystems
2022-02-01 17:24:34 +01:00
dlm
fs: dlm: handle -EBUSY first in lock arg validation
2022-10-26 13:22:14 +02:00
ecryptfs
Revert "ecryptfs: replace BUG_ON with error handling code"
2021-05-26 12:05:19 +02:00
efivarfs
efivarfs: revert "fix memory leak in efivarfs_create()"
2020-12-02 08:49:53 +01:00
efs
…
erofs
erofs: avoid consecutive detection for Highmem memory
2022-08-25 11:17:36 +02:00
exportfs
exportfs_decode_fh(): negative pinned may become positive without the parent locked
2019-11-10 11:56:05 -05:00
ext2
ext2: Add more validity checks for inode counts
2022-08-25 11:17:28 +02:00
ext4
ext4: don't allow journal inode to have encrypt flag
2023-01-18 11:41:59 +01:00
f2fs
f2fs: should put a page when checking the summary info
2023-01-18 11:41:44 +01:00
fat
fat: add ratelimit to fat*_ent_bread()
2022-06-14 18:11:30 +02:00
freevxfs
…
fscache
fscache: Fix cookie key hashing
2021-09-22 12:26:25 +02:00
fuse
fuse: lock inode unconditionally in fuse_fallocate()
2022-12-08 11:23:01 +01:00
gfs2
gfs2: Switch from strlcpy to strscpy
2022-11-25 17:42:22 +01:00
hfs
hfs/hfsplus: avoid WARN_ON() for sanity check, use proper error handling
2023-01-18 11:41:59 +01:00
hfsplus
hfs/hfsplus: use WARN_ON for sanity check
2023-01-18 11:41:59 +01:00
hostfs
hostfs: fix memory handling in follow_link()
2021-04-14 08:24:14 +02:00
hpfs
…
hugetlbfs
hugetlbfs: fix null-ptr-deref in hugetlbfs_parse_param()
2023-01-18 11:41:38 +01:00
iomap
iomap: iomap_write_failed fix
2022-06-14 18:11:36 +02:00
isofs
isofs: Fix out of bound access for corrupted isofs image
2021-11-12 14:43:03 +01:00
jbd2
jbd2: wake up journal waiters in FIFO order, not LIFO
2022-10-26 13:22:17 +02:00
jffs2
jffs2: fix memory leak in jffs2_do_fill_super
2022-06-14 18:11:55 +02:00
jfs
fs: jfs: fix shift-out-of-bounds in dbDiscardAG
2023-01-18 11:41:34 +01:00
kernfs
kernfs: fix use-after-free in __kernfs_remove
2022-11-03 23:56:54 +09:00
lockd
lockd: lockd server-side shouldn't set fl_ops
2021-09-22 12:26:34 +02:00
minix
minix: fix bug when opening a file with O_DIRECT
2022-04-15 14:18:35 +02:00
nfs
NFSv4.x: Fail client initialisation if state manager thread can't run
2023-01-18 11:41:10 +01:00
nfs_common
nfs_common: need lock during iterate through the list
2020-12-30 11:51:22 +01:00
nfsd
nfsd: fix handling of readdir in v4root vs. mount upcall timeout
2023-01-18 11:41:59 +01:00
nilfs2
nilfs2: fix shift-out-of-bounds/overflow in nilfs_sb2_bad_offset()
2023-01-18 11:41:34 +01:00
nls
…
notify
fsnotify: fix wrong lockdep annotations
2022-06-14 18:11:34 +02:00
ntfs
ntfs: check overflow when iterating ATTR_RECORDs
2022-11-25 17:42:22 +01:00
ocfs2
ocfs2: fix memory leak in ocfs2_mount_volume()
2023-01-18 11:40:56 +01:00
omfs
…
openpromfs
…
orangefs
orangefs: Fix kmemleak in orangefs_{kernel,client}_debug_init()
2023-01-18 11:41:39 +01:00
overlayfs
ovl: Use ovl mounter's fsuid and fsgid in ovl_link()
2023-01-18 11:41:43 +01:00
proc
mm: /proc/pid/smaps_rollup: fix no vma's null-deref
2022-10-29 10:20:36 +02:00
pstore
pstore: Make sure CONFIG_PSTORE_PMSG selects CONFIG_RT_MUTEXES
2023-01-18 11:41:40 +01:00
qnx4
qnx4: work around gcc false positive warning bug
2021-09-30 10:09:26 +02:00
qnx6
…
quota
quota: Check next/prev free block number after reading from quota file
2022-10-26 13:22:14 +02:00
ramfs
ramfs: fix nommu mmap with gaps in the page cache
2020-10-29 09:57:53 +01:00
reiserfs
reiserfs: Add missing calls to reiserfs_security_free()
2023-01-18 11:41:41 +01:00
romfs
romfs: fix uninitialized memory leak in romfs_dev_read()
2020-08-26 10:40:51 +02:00
squashfs
squashfs: fix divide error in calculate_skip()
2021-05-19 10:08:29 +02:00
sysfs
sysfs: Add sysfs_emit and sysfs_emit_at to format sysfs output
2021-03-07 12:20:48 +01:00
sysv
fs: sysv: Fix sysv_nblocks() returns wrong value
2023-01-18 11:40:58 +01:00
tracefs
tracefs: Only clobber mode/uid/gid on remount if asked
2022-09-20 12:28:00 +02:00
ubifs
ubifs: Rectify space amount budget for mkdir/tmpfile operations
2022-04-15 14:18:31 +02:00
udf
udf: Fix extension of the last extent in the file
2023-01-18 11:41:58 +01:00
ufs
fs/ufs: avoid potential u32 multiplication overflow
2020-08-21 13:05:37 +02:00
unicode
…
verity
fs-verity: fix signed integer overflow with i_size near S64_MAX
2021-10-06 15:42:30 +02:00
xfs
xfs: drain the buf delwri queue before xfsaild idles
2022-11-25 17:42:03 +01:00
aio.c
aio: fix use-after-free due to missing POLLFREE handling
2021-12-14 14:49:02 +01:00
anon_inodes.c
…
attr.c
vfs: Check the truncate maximum size in inode_newsize_ok()
2022-08-25 11:17:21 +02:00
bad_inode.c
…
binfmt_aout.c
binfmt: Move install_exec_creds after setup_new_exec to match binfmt_elf
2023-01-18 11:41:46 +01:00
binfmt_elf_fdpic.c
binfmt: Fix error return code in load_elf_fdpic_binary()
2023-01-18 11:41:46 +01:00
binfmt_elf.c
elf: don't use MAP_FIXED_NOREPLACE for elf interpreter mappings
2021-10-06 15:42:35 +02:00
binfmt_em86.c
…
binfmt_flat.c
binfmt: Move install_exec_creds after setup_new_exec to match binfmt_elf
2023-01-18 11:41:46 +01:00
binfmt_misc.c
binfmt_misc: fix shift-out-of-bounds in check_special_flags
2023-01-18 11:41:33 +01:00
binfmt_script.c
…
block_dev.c
block: reexpand iov_iter after read/write
2021-05-22 11:38:29 +02:00
buffer.c
mm: fs: initialize fsdata passed to write_begin/write_end interface
2022-11-25 17:42:22 +01:00
char_dev.c
chardev: fix error handling in cdev_device_add()
2023-01-18 11:41:25 +01:00
compat_binfmt_elf.c
…
compat_ioctl.c
compat_ioctl: remove /dev/random commands
2022-06-22 14:11:03 +02:00
compat.c
…
coredump.c
coredump: fix core_pattern parse error
2020-12-11 13:23:30 +01:00
d_path.c
fs: fix NULL dereference due to data race in prepend_path()
2020-10-29 09:57:45 +01:00
dax.c
dax: fix cache flush on PMD-mapped pages
2022-06-14 18:11:41 +02:00
dcache.c
fix dget_parent() fastpath race
2020-10-01 13:17:19 +02:00
dcookies.c
…
direct-io.c
fs: direct-io: fix missing sdio->boundary
2021-04-14 08:24:11 +02:00
drop_caches.c
fs: avoid softlockups in s_inodes iterators
2020-01-12 12:21:37 +01:00
eventfd.c
eventfd: track eventfd_signal() recursion depth
2020-02-11 04:35:37 -08:00
eventpoll.c
epoll: check for events when removing a timed out thread from the wait queue
2022-12-08 11:23:05 +01:00
exec.c
exec: Force single empty string when argv is empty
2022-06-06 08:33:50 +02:00
fcntl.c
fcntl: fix potential deadlock for &fasync_struct.fa_lock
2021-09-15 09:47:28 +02:00
fhandle.c
…
file_table.c
SUNRPC: Ensure we flush any closed sockets before xs_xprt_free()
2022-05-25 09:14:34 +02:00
file.c
fget: clarify and improve __fget_files() implementation
2022-03-02 11:41:18 +01:00
filesystems.c
fs/filesystems.c: downgrade user-reachable WARN_ONCE() to pr_warn_once()
2020-04-17 10:50:21 +02:00
fs_context.c
memcg: charge fs_context and legacy_fs_context
2022-02-08 18:24:29 +01:00
fs_parser.c
…
fs_pin.c
…
fs_struct.c
…
fs_types.c
…
fs-writeback.c
fs-writeback: writeback_sb_inodes：Recalculate 'wrote' according skipped pages
2022-06-14 18:11:44 +02:00
fsopen.c
…
inode.c
fs: fix UAF/GPF bug in nilfs_mdt_destroy
2022-10-15 07:54:36 +02:00
internal.h
cgroup1: fix leaked context root causing sporadic NULL deref in LTP
2021-07-31 08:19:37 +02:00
io_uring.c
io_uring/af_unix: defer registered files gc to io_uring release
2022-10-26 13:22:59 +02:00
ioctl.c
compat_ioctl: add compat_ptr_ioctl()
2019-12-17 19:55:30 +01:00
Kconfig
…
Kconfig.binfmt
…
libfs.c
libfs: add DEFINE_SIMPLE_ATTRIBUTE_SIGNED for signed value
2023-01-18 11:40:55 +01:00
locks.c
locks: reinstate locks_delete_block optimization
2020-03-25 08:25:41 +01:00
Makefile
…
mbcache.c
mbcache: Avoid nesting of cache->c_list_lock under bit locks
2023-01-18 11:41:59 +01:00
mount.h
…
mpage.c
fs: move guard_bio_eod() after bio_set_op_attrs
2020-01-17 19:48:21 +01:00
namei.c
mm: fs: initialize fsdata passed to write_begin/write_end interface
2022-11-25 17:42:22 +01:00
namespace.c
fs: warn about impending deprecation of mandatory locks
2021-08-26 08:36:22 -04:00
no-block.c
…
nsfs.c
…
open.c
cifs_atomic_open(): fix double-put on late allocation failure
2020-03-18 07:17:51 +01:00
pipe.c
pipe: increase minimum default pipe size to 2 pages
2021-08-12 13:21:02 +02:00
pnode.c
pnode: terminate at peers of source
2023-01-18 11:41:44 +01:00
pnode.h
mount: fix mounting of detached mounts onto targets that reside on shared mounts
2021-03-17 17:03:33 +01:00
posix_acl.c
…
proc_namespace.c
…
read_write.c
fs: allow deduplication of eof block into the end of the destination file
2020-02-11 04:35:23 -08:00
readdir.c
readdir: make sure to verify directory entry for legacy interfaces too
2021-04-21 12:56:16 +02:00
select.c
select: Fix indefinitely sleeping task in poll_schedule_timeout()
2022-01-29 10:25:11 +01:00
seq_file.c
seq_file: disallow extremely large seq buffer allocations
2021-07-20 16:10:54 +02:00
signalfd.c
io_uring: disable polling pollfree files
2022-09-05 10:27:47 +02:00
splice.c
Revert "fs: check FMODE_LSEEK to control internal pipe splicing"
2022-10-17 17:24:32 +02:00
stack.c
…
stat.c
stat: fix inconsistency between struct stat and struct compat_stat
2022-04-27 13:50:48 +02:00
statfs.c
vfs: Fix EOVERFLOW testing in put_compat_statfs64
2019-10-03 14:21:35 -07:00
super.c
vfs: make freeze_super abort when sync_filesystem returns error
2022-02-23 11:59:55 +01:00
sync.c
…
timerfd.c
…
userfaultfd.c
userfaultfd: open userfaultfds with O_RDONLY
2022-10-26 13:22:21 +02:00
utimes.c
utimes: Clamp the timestamps in notify_change()
2020-02-11 04:35:12 -08:00
xattr.c
fs: don't audit the capability check in simple_xattr_list()
2023-01-18 11:40:53 +01:00