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linux-stable/fs
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Sungjong Seo 632fb232b6 exfat: fix potential deadlock on __exfat_get_dentry_set 
commit 89fc548767 upstream.

When accessing a file with more entries than ES_MAX_ENTRY_NUM, the bh-array
is allocated in __exfat_get_entry_set. The problem is that the bh-array is
allocated with GFP_KERNEL. It does not make sense. In the following cases,
a deadlock for sbi->s_lock between the two processes may occur.

       CPU0                CPU1
       ----                ----
  kswapd
   balance_pgdat
    lock(fs_reclaim)
                      exfat_iterate
                       lock(&sbi->s_lock)
                       exfat_readdir
                        exfat_get_uniname_from_ext_entry
                         exfat_get_dentry_set
                          __exfat_get_dentry_set
                           kmalloc_array
                            ...
                            lock(fs_reclaim)
    ...
    evict
     exfat_evict_inode
      lock(&sbi->s_lock)

To fix this, let's allocate bh-array with GFP_NOFS.

Fixes: a3ff29a95f ("exfat: support dynamic allocate bh for exfat_entry_set_cache")
Cc: stable@vger.kernel.org # v6.2+
Reported-by: syzbot+412a392a2cd4a65e71db@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/lkml/000000000000fef47e0618c0327f@google.com
Signed-off-by: Sungjong Seo <sj1557.seo@samsung.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
[Sherry: The problematic commit was backported to 5.15.y and 5.10.y, thus backport this fix]
Signed-off-by: Sherry Yang <sherry.yang@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-12-19 18:06:09 +01:00
..
9p fs/9p: drop inodes immediately on non-.L too 2024-05-17 11:48:05 +02:00
adfs Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2020-10-24 12:26:05 -07:00
affs affs: initialize fsdata in affs_truncate() 2023-02-01 08:23:11 +01:00
afs afs: Don't cross .backup mountpoint from backup volume 2024-06-16 13:32:30 +02:00
autofs file: Replace ksys_close with close_fd 2024-06-21 14:52:50 +02:00
befs [PATCH] reduce boilerplate in fsid handling 2020-09-18 16:45:50 -04:00
bfs bfs: don't use WARNING: string when it's just info. 2021-01-06 14:56:52 +01:00
btrfs btrfs: fix missing snapshot drew unlock when root is dead during swap activation 2024-12-14 19:48:33 +01:00
cachefiles namei: introduce struct renamedata 2024-06-21 14:52:59 +02:00
ceph ceph: remove the incorrect Fw reference check when dirtying pages 2024-10-17 15:08:06 +02:00
cifs cifs: Fix buffer overflow when parsing NFS reparse points 2024-12-14 19:47:42 +01:00
coda coda: Avoid partial allocation of sig_inputArgs 2023-03-11 16:39:51 +01:00
configfs Revert "configfs: fix a race in configfs_lookup()" 2023-09-21 09:45:15 +02:00
cramfs [PATCH] reduce boilerplate in fsid handling 2020-09-18 16:45:50 -04:00
crypto fscrypt: fix keyring memory leak on mount failure 2022-11-10 18:14:25 +01:00
debugfs debugfs: fix automount d_fsdata usage 2024-01-25 14:37:36 -08:00
devpts fsnotify: fix fsnotify hooks in pseudo filesystems 2022-02-01 17:25:39 +01:00
dlm dlm: fix plock lookup when using multiple lockspaces 2023-09-19 12:20:22 +02:00
ecryptfs namei: introduce struct renamedata 2024-06-21 14:52:59 +02:00
efivarfs efivarfs: force RO when remounting if SetVariable is not supported 2024-01-25 14:37:40 -08:00
efs [PATCH] reduce boilerplate in fsid handling 2020-09-18 16:45:50 -04:00
erofs erofs: fix lz4 inplace decompression 2024-03-01 13:16:48 +01:00
exfat exfat: fix potential deadlock on __exfat_get_dentry_set 2024-12-19 18:06:09 +01:00
exportfs exportfs: use pr_debug for unreachable debug statements 2024-06-21 14:54:05 +02:00
ext2 ext2: Verify bitmap and itable block numbers before using them 2024-08-19 05:40:56 +02:00
ext4 ext4: fix FS_IOC_GETFSMAP handling 2024-12-14 19:48:08 +01:00
f2fs f2fs: fix f2fs_bug_on when uninstalling filesystem call f2fs_evict_inode. 2024-12-14 19:48:31 +01:00
fat fat: fix uninitialized variable 2024-10-22 15:39:24 +02:00
freevxfs
fscache fscache: Fix cookie key hashing 2021-09-18 13:40:15 +02:00
fuse fuse: use unsigned type for getxattr/listxattr size truncation 2024-09-12 11:06:43 +02:00
gfs2 gfs2: setattr_chown: Add missing initialization 2024-09-04 13:17:34 +02:00
hfs hfs: fix to initialize fields of hfs_inode_info after hfs_alloc_inode() 2024-08-19 05:40:55 +02:00
hfsplus hfsplus: don't query the device logical block size multiple times 2024-12-14 19:47:44 +01:00
hostfs hostfs: fix memory handling in follow_link() 2021-04-14 08:42:06 +02:00
hpfs [PATCH] reduce boilerplate in fsid handling 2020-09-18 16:45:50 -04:00
hugetlbfs mm: hugetlb pages should not be reserved by shmat() if SHM_NORESERVE 2024-03-15 10:48:22 -04:00
iomap iomap: update ki_pos a little later in iomap_dio_complete 2024-11-08 16:21:58 +01:00
isofs isofs: handle CDs with bad root inode but good Joliet root directory 2024-04-13 12:59:46 +02:00
jbd2 jbd2: correctly compare tids with tid_geq function in jbd2_fc_begin_commit 2024-10-17 15:08:21 +02:00
jffs2 jffs2: Fix rtime decompressor 2024-12-14 19:48:34 +01:00
jfs jfs: add a check to prevent array-index-out-of-bounds in dbAdjTree 2024-12-14 19:48:28 +01:00
kernfs fs/kernfs/dir: obey S_ISGID 2024-02-23 08:42:14 +01:00
lockd nfsd: stop setting ->pg_stats for unused stats 2024-09-12 11:06:45 +02:00
minix minix: fix bug when opening a file with O_DIRECT 2022-04-13 21:01:01 +02:00
nfs nfs: ignore SB_RDONLY when mounting nfs 2024-12-14 19:48:15 +01:00
nfs_common NFSD: Add an xdr_stream-based encoder for NFSv2/3 ACLs 2024-06-21 14:53:03 +02:00
nfsd nfsd: fix nfs4_openowner leak when concurrent nfsd4_open occur 2024-12-14 19:48:17 +01:00
nilfs2 nilfs2: fix potential out-of-bounds memory access in nilfs_find_entry() 2024-12-14 19:48:24 +01:00
nls fs/nls: make load_nls() take a const parameter 2023-09-19 12:20:04 +02:00
notify fsnotify: fix sending inotify event with unexpected filename 2024-12-14 19:48:08 +01:00
ntfs ntfs: check overflow when iterating ATTR_RECORDs 2022-11-25 17:45:57 +01:00
ocfs2 ocfs2: Revert "ocfs2: fix the la space leak when unmounting an ocfs2 volume" 2024-12-14 19:48:34 +01:00
omfs fs: omfs: use kmemdup() rather than kmalloc+memcpy 2020-09-22 23:39:45 -04:00
openpromfs openpromfs: finish conversion to the new mount API 2024-06-16 13:32:01 +02:00
orangefs orangefs: fix out-of-bounds fsid access 2024-07-18 13:05:40 +02:00
overlayfs ovl: Filter invalid inodes with missing lookup function 2024-12-14 19:47:37 +01:00
proc proc/softirqs: replace seq_printf with seq_put_decimal_ull_width 2024-12-14 19:47:42 +01:00
pstore pstore/zone: Add a null pointer check to the psz_kmsg_read 2024-04-13 12:59:41 +02:00
qnx4 qnx4: work around gcc false positive warning bug 2021-09-30 10:11:08 +02:00
qnx6 [PATCH] reduce boilerplate in fsid handling 2020-09-18 16:45:50 -04:00
quota quota: flush quota_release_work upon quota writeback 2024-12-14 19:48:16 +01:00
ramfs shmem: use ramfs_kill_sb() for kill_sb method of ramfs-based tmpfs 2023-07-27 08:44:13 +02:00
reiserfs reiserfs: Check the return value from __getblk() 2023-09-19 12:20:06 +02:00
romfs Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2020-10-24 12:26:05 -07:00
squashfs Squashfs: sanity check symbolic link size 2024-09-12 11:06:49 +02:00
sysfs fs: sysfs: Fix reference leak in sysfs_break_active_protection() 2024-05-02 16:23:39 +02:00
sysv sysv: don't call sb_bread() with pointers_lock held 2024-04-13 12:59:45 +02:00
tracefs tracefs: Add missing lockdown check to tracefs_create_dir() 2023-09-23 11:01:10 +02:00
ubifs ubifs: authentication: Fix use-after-free in ubifs_tnc_end_commit 2024-12-14 19:48:14 +01:00
udf udf: Avoid excessive partition lengths 2024-09-12 11:06:46 +02:00
ufs Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2020-10-24 12:26:05 -07:00
unicode Revert "unicode: Don't special case ignorable code points" 2024-12-14 19:48:33 +01:00
vboxsf vboxsf: Avoid an spurious warning if load_nls_xxx() fails 2024-04-13 12:59:25 +02:00
verity fs: add file and path permissions helpers 2024-06-21 14:52:58 +02:00
xfs xfs: fix scrub tracepoints when inode-rooted btrees are involved 2024-12-19 18:06:09 +01:00
zonefs zonefs: Improve error handling 2024-03-01 13:16:43 +01:00
aio.c fs/aio: Check IOCB_AIO_RW before the struct aio_kiocb conversion 2024-04-13 12:58:53 +02:00
anon_inodes.c
attr.c attr: block mode changes of symlinks 2023-09-23 11:01:09 +02:00
bad_inode.c
binfmt_aout.c
binfmt_elf_fdpic.c binfmt_misc: pass binfmt_misc flags to the interpreter 2024-09-04 13:17:42 +02:00
binfmt_elf.c binfmt_misc: pass binfmt_misc flags to the interpreter 2024-09-04 13:17:42 +02:00
binfmt_em86.c
binfmt_flat.c binfmt_flat: do not stop relocating GOT entries prematurely on riscv 2022-06-09 10:20:47 +02:00
binfmt_misc.c binfmt_misc: pass binfmt_misc flags to the interpreter 2024-09-04 13:17:42 +02:00
binfmt_script.c
block_dev.c block: Don't invalidate pagecache for invalid falloc modes 2024-01-15 18:48:03 +01:00
buffer.c mm: fs: initialize fsdata passed to write_begin/write_end interface 2022-11-25 17:45:56 +01:00
char_dev.c chardev: fix error handling in cdev_device_add() 2023-01-14 10:15:59 +01:00
compat_binfmt_elf.c
coredump.c exec: Simplify unshare_files 2024-06-21 14:52:47 +02:00
d_path.c fs: fix NULL dereference due to data race in prepend_path() 2020-10-14 14:54:45 -07:00
dax.c dax: fix cache flush on PMD-mapped pages 2022-06-09 10:21:16 +02:00
dcache.c fs: better handle deep ancestor chains in is_subdir() 2024-07-27 10:40:21 +02:00
dcookies.c
direct-io.c fs: direct-io: fix missing sdio->boundary 2021-04-14 08:41:58 +02:00
drop_caches.c
eventfd.c eventfd: prevent underflow for eventfd semaphores 2023-09-19 12:20:06 +02:00
eventpoll.c epoll: ep_autoremove_wake_function should use list_del_init_careful 2023-06-21 15:45:37 +02:00
exec.c exec: don't WARN for racy path_noexec check 2024-11-08 16:21:58 +01:00
fcntl.c fs: Fix file_set_fowner LSM hook inconsistencies 2024-10-17 15:08:03 +02:00
fhandle.c do_sys_name_to_handle(): use kzalloc() to fix kernel-infoleak 2024-03-26 18:21:47 -04:00
file_table.c SUNRPC: Ensure we flush any closed sockets before xs_xprt_free() 2022-05-18 10:23:48 +02:00
file.c fix bitmap corruption on close_range() with CLOSE_RANGE_UNSHARE 2024-09-04 13:17:30 +02:00
filesystems.c
fs_context.c fs: avoid empty option when generating legacy mount string 2023-07-27 08:44:13 +02:00
fs_parser.c fs_parse: mark fs_param_bad_value() as static 2020-10-13 18:38:27 -07:00
fs_pin.c
fs_struct.c vfs: Use sequence counter with associated spinlock 2020-07-29 16:14:27 +02:00
fs_types.c
fs-writeback.c writeback: fix call of incorrect macro 2023-05-17 11:48:10 +02:00
fsopen.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
init.c fs: add file and path permissions helpers 2024-06-21 14:52:58 +02:00
inode.c vfs: fix race between evice_inodes() and find_inode()&iput() 2024-10-17 15:08:03 +02:00
internal.h fs: Establish locking order for unrelated directories 2023-07-27 08:44:13 +02:00
ioctl.c lsm: new security_file_ioctl_compat() hook 2024-02-23 08:41:53 +01:00
Kconfig NFSD: Remove CONFIG_NFSD_V3 2024-06-21 14:53:37 +02:00
Kconfig.binfmt
kernel_read_file.c vfs: check fd has read access in kernel_read_file_from_fd() 2021-10-27 09:56:51 +02:00
libfs.c libfs: add DEFINE_SIMPLE_ATTRIBUTE_SIGNED for signed value 2023-01-14 10:15:19 +01:00
locks.c filelock: Fix fcntl/close race recovery compat path 2024-07-27 10:40:24 +02:00
Makefile io_uring: import 5.15-stable io_uring 2023-01-04 11:39:23 +01:00
mbcache.c mbcache: Avoid nesting of cache->c_list_lock under bit locks 2023-01-14 10:16:50 +01:00
mount.h
mpage.c
namei.c namei: introduce struct renamedata 2024-06-21 14:52:59 +02:00
namespace.c mount: handle OOM on mnt_warn_timestamp_expiry 2024-10-17 15:07:39 +02:00
no-block.c
nsfs.c
open.c openat2: explicitly return -E2BIG for (usize > PAGE_SIZE) 2024-11-08 16:22:00 +01:00
pipe.c pipe: wakeup wr_wait after setting max_usage 2024-02-23 08:42:00 +01:00
pnode.c pnode: terminate at peers of source 2023-01-14 10:16:27 +01:00
pnode.h mount: fix mounting of detached mounts onto targets that reside on shared mounts 2021-03-17 17:06:13 +01:00
posix_acl.c
proc_namespace.c proc mountinfo: make splice available again 2020-12-30 11:54:02 +01:00
read_write.c vfs: fix copy_file_range() averts filesystem freeze protection 2022-12-19 12:27:30 +01:00
readdir.c readdir: make sure to verify directory entry for legacy interfaces too 2021-04-21 13:00:54 +02:00
remap_range.c fs/remap: constrain dedupe of EOF blocks 2022-07-21 21:20:01 +02:00
select.c fs/select: rework stack allocation hack for clang 2024-03-26 18:21:47 -04:00
seq_file.c seq_file: disallow extremely large seq buffer allocations 2021-07-20 16:05:59 +02:00
signalfd.c io_uring: disable polling pollfree files 2022-09-05 10:28:58 +02:00
splice.c splice: don't generate zero-len segement bvecs 2024-11-17 14:59:37 +01:00
stack.c
stat.c stat: fix inconsistency between struct stat and struct compat_stat 2022-04-27 13:53:54 +02:00
statfs.c statfs: enforce statfs[64] structure initialization 2023-05-30 12:57:55 +01:00
super.c fs: explicitly unregister per-superblock BDIs 2024-10-17 15:07:38 +02:00
sync.c vfs: make sync_filesystem return errors from ->sync_fs 2022-08-31 17:15:14 +02:00
timerfd.c
userfaultfd.c userfaultfd: open userfaultfds with O_RDONLY 2022-10-26 13:25:17 +02:00
utimes.c fs: expose utimes_common 2020-07-31 08:16:01 +02:00
xattr.c fs: don't audit the capability check in simple_xattr_list() 2023-01-14 10:15:16 +01:00