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android_kernel_motorola_sm6225/fs
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Kyeong Yoo c0b59abaf8 jffs2: GC deadlock reading a page that is used in jffs2_write_begin() 
[ Upstream commit aa39cc675799bc92da153af9a13d6f969c348e82 ]

GC task can deadlock in read_cache_page() because it may attempt
to release a page that is actually allocated by another task in
jffs2_write_begin().
The reason is that in jffs2_write_begin() there is a small window
a cache page is allocated for use but not set Uptodate yet.

This ends up with a deadlock between two tasks:
1) A task (e.g. file copy)
   - jffs2_write_begin() locks a cache page
   - jffs2_write_end() tries to lock "alloc_sem" from
	 jffs2_reserve_space() <-- STUCK
2) GC task (jffs2_gcd_mtd3)
   - jffs2_garbage_collect_pass() locks "alloc_sem"
   - try to lock the same cache page in read_cache_page() <-- STUCK

So to avoid this deadlock, hold "alloc_sem" in jffs2_write_begin()
while reading data in a cache page.

Signed-off-by: Kyeong Yoo <kyeong.yoo@alliedtelesis.co.nz>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-01-27 09:04:26 +01:00
..
9p 9P: Cast to loff_t before multiplying 2020-11-05 11:08:53 +01:00
adfs
affs fs/affs: release old buffer head on error path 2021-03-04 09:39:55 +01:00
afs afs: Fix an IS_ERR() vs NULL check 2021-06-30 08:48:14 -04:00
autofs autofs: fix a leak in autofs_expire_indirect() 2019-12-13 08:51:01 +01:00
befs
bfs
btrfs btrfs: check-integrity: fix a warning on write caching disabled disk 2021-12-08 08:50:11 +01:00
cachefiles cachefiles: Handle readpage error correctly 2020-11-05 11:08:54 +01:00
ceph ceph: lockdep annotations for try_nonblocking_invalidate 2021-09-26 13:39:48 +02:00
cifs cifs: fix incorrect check for null pointer in header_assemble 2021-10-06 15:31:10 +02:00
coda
configfs configfs: fix memleak in configfs_release_bin_file 2021-07-20 16:15:57 +02:00
cramfs
crypto fscrypt: add fscrypt_symlink_getattr() for computing st_size 2021-09-22 11:47:56 +02:00
debugfs
devpts
dlm fs: dlm: filter user dlm messages for kernel locks 2022-01-27 09:04:23 +01:00
ecryptfs Revert "ecryptfs: replace BUG_ON with error handling code" 2021-05-26 11:48:34 +02:00
efivarfs efivarfs: revert "fix memory leak in efivarfs_create()" 2020-12-02 08:48:12 +01:00
efs
exofs exofs_mount(): fix leaks on failure exits 2019-12-05 09:20:32 +01:00
exportfs exportfs: fix 'passing zero to ERR_PTR()' warning 2020-01-27 14:50:02 +01:00
ext2 ext2: fix sleeping in atomic bugs on error 2021-10-09 14:11:03 +02:00
ext4 ext4: avoid trim error on fs with small groups 2022-01-27 09:04:21 +01:00
f2fs f2fs: fix to do sanity check in is_alive() 2022-01-27 09:04:15 +01:00
fat fat: don't allow to mount if the FAT length == 0 2020-06-22 09:05:08 +02:00
freevxfs
fscache fscache: Fix cookie key hashing 2021-09-22 11:48:02 +02:00
fuse fuse: annotate lock in fuse_reverse_inval_entry() 2021-12-22 09:19:04 +01:00
gfs2 gfs2: Fix length of holes reported at end-of-file 2021-12-08 08:50:11 +01:00
hfs hfs: add lock nesting notation to hfs_find_init 2021-07-31 08:22:38 +02:00
hfsplus hfsplus: prevent corruption in shrinking truncate 2021-05-22 10:59:45 +02:00
hostfs
hpfs
hugetlbfs hugetlbfs: hugetlb_fault_mutex_hash() cleanup 2021-06-03 08:38:12 +02:00
isofs isofs: Fix out of bound access for corrupted isofs image 2021-11-12 14:40:50 +01:00
jbd2 jbd2: abort journal if free a async write error metadata buffer 2020-09-03 11:24:24 +02:00
jffs2 jffs2: GC deadlock reading a page that is used in jffs2_write_begin() 2022-01-27 09:04:26 +01:00
jfs JFS: fix memleak in jfs_mount 2021-11-26 11:36:12 +01:00
kernfs kernfs: fix ino wrap-around detection 2019-12-13 08:52:43 +01:00
lockd lockd: don't use interval-based rebinding over TCP 2020-12-30 11:25:59 +01:00
minix fs/minix: remove expected error message in block_to_path() 2020-08-21 11:05:38 +02:00
nfs NFSv42: Fix pagecache invalidation after COPY/CLONE 2021-12-08 08:50:11 +01:00
nfs_common nfs_common: need lock during iterate through the list 2020-12-30 11:26:02 +01:00
nfsd nfsd: fix use-after-free due to delegation race 2021-12-22 09:19:01 +01:00
nilfs2 nilfs2: fix memory leak in nilfs_sysfs_delete_snapshot_group 2021-09-26 13:39:49 +02:00
nls
notify fanotify: fix ignore mask logic for events on child and on dir 2020-06-30 23:17:00 -04:00
ntfs ntfs: fix validity check for file name attribute 2021-07-20 16:15:39 +02:00
ocfs2 ocfs2: fix data corruption on truncate 2021-11-26 11:35:57 +01:00
omfs
openpromfs
orangefs orangefs: Fix the size of a memory allocation in orangefs_bufmap_alloc() 2022-01-27 09:04:13 +01:00
overlayfs ovl: fix warning in ovl_create_real() 2021-12-22 09:19:04 +01:00
proc proc/vmcore: fix clearing user buffer by properly using clear_user() 2021-12-01 09:27:39 +01:00
pstore pstore: Fix typo in compression option name 2021-03-04 09:39:54 +01:00
qnx4 qnx4: work around gcc false positive warning bug 2021-10-06 15:31:20 +02:00
qnx6
quota quota: correct error number in free_dqentry() 2021-11-26 11:36:03 +01:00
ramfs ramfs: fix nommu mmap with gaps in the page cache 2020-10-30 10:38:21 +01:00
reiserfs reiserfs: check directory items on read from disk 2021-08-12 13:19:44 +02:00
romfs romfs: fix uninitialized memory leak in romfs_dev_read() 2020-08-26 10:30:59 +02:00
squashfs squashfs: fix divide error in calculate_skip() 2021-05-22 10:59:45 +02:00
sysfs sysfs: Add sysfs_emit and sysfs_emit_at to format sysfs output 2021-03-07 12:19:01 +01:00
sysv
tracefs tracefs: Set all files to the same group ownership as the mount option 2021-12-14 10:18:07 +01:00
ubifs ubifs: report correct st_size for encrypted symlinks 2021-09-22 11:47:56 +02:00
udf udf: Fix crash after seekdir 2021-11-26 11:36:23 +01:00
ufs fs/ufs: avoid potential u32 multiplication overflow 2020-08-21 11:05:38 +02:00
xfs xfs: map unwritten blocks in XFS_IOC_{ALLOC,FREE}SP just like fallocate 2022-01-11 13:58:49 +01:00
aio.c aio: fix use-after-free due to missing POLLFREE handling 2021-12-14 10:18:07 +01:00
anon_inodes.c
attr.c
bad_inode.c
binfmt_aout.c
binfmt_elf.c elf: don't use MAP_FIXED_NOREPLACE for elf interpreter mappings 2021-10-06 15:31:24 +02:00
binfmt_elf_fdpic.c
binfmt_em86.c
binfmt_flat.c
binfmt_misc.c binfmt_misc: fix possible deadlock in bm_register_write 2021-03-17 16:43:51 +01:00
binfmt_script.c exec: load_script: Do not exec truncated interpreter path 2019-11-06 13:05:37 +01:00
block_dev.c block: reexpand iov_iter after read/write 2021-05-22 10:59:49 +02:00
buffer.c fs: Don't invalidate page buffers in block_write_full_page() 2020-11-05 11:08:46 +01:00
char_dev.c chardev: Avoid potential use-after-free in 'chrdev_open()' 2020-01-14 20:06:57 +01:00
compat.c
compat_binfmt_elf.c
compat_ioctl.c fix compat handling of FICLONERANGE, FIDEDUPERANGE and FS_IOC_FIEMAP 2020-01-09 10:19:07 +01:00
coredump.c coredump: fix crash when umh is disabled 2020-05-14 07:57:21 +02:00
d_path.c
dax.c dax: pass NOWAIT flag to iomap_apply 2020-03-05 16:42:12 +01:00
dcache.c fs, fscrypt: clear DCACHE_ENCRYPTED_NAME when unaliasing directory 2020-11-05 11:08:35 +01:00
dcookies.c
direct-io.c fs: direct-io: fix missing sdio->boundary 2021-04-14 08:22:32 +02:00
drop_caches.c fs: avoid softlockups in s_inodes iterators 2020-01-12 12:17:20 +01:00
eventfd.c eventfd: track eventfd_signal() recursion depth 2020-02-11 04:34:08 -08:00
eventpoll.c ep_create_wakeup_source(): dentry name can change under you... 2020-10-07 08:00:09 +02:00
exec.c vfs: check fd has read access in kernel_read_file_from_fd() 2021-10-27 09:53:13 +02:00
fcntl.c fcntl: fix potential deadlock for &fasync_struct.fa_lock 2021-09-22 11:47:50 +02:00
fhandle.c
file.c fget: check that the fd still exists after getting a ref to it 2021-12-08 08:50:13 +01:00
file_table.c fs: add fget_many() and fput_many() 2021-12-08 08:50:13 +01:00
filesystems.c fs/filesystems.c: downgrade user-reachable WARN_ONCE() to pr_warn_once() 2020-04-17 10:48:51 +02:00
fs-writeback.c writeback: fix obtain a reference to a freeing memcg css 2021-07-20 16:15:52 +02:00
fs_pin.c
fs_struct.c
inode.c futex: Fix inode life-time issue 2020-03-25 08:06:14 +01:00
internal.h
ioctl.c
iomap.c iomap: fix sub-page uptodate handling 2021-05-22 10:59:50 +02:00
Kconfig
Kconfig.binfmt
libfs.c libfs: fix error cast of negative value in simple_attr_write() 2020-11-24 13:27:23 +01:00
locks.c locks: print unsigned ino in /proc/locks 2020-01-09 10:19:00 +01:00
Makefile
mbcache.c
mount.h
mpage.c
namei.c namei: only return -ECHILD from follow_dotdot_rcu() 2020-03-05 16:42:20 +01:00
namespace.c fs: warn about impending deprecation of mandatory locks 2021-08-26 08:36:49 -04:00
no-block.c
nsfs.c
open.c cifs_atomic_open(): fix double-put on late allocation failure 2020-03-18 07:14:21 +01:00
pipe.c pipe: increase minimum default pipe size to 2 pages 2021-08-12 13:19:43 +02:00
pnode.c propagate_one(): mnt_set_mountpoint() needs mount_lock 2020-05-02 17:26:01 +02:00
pnode.h
posix_acl.c
proc_namespace.c
read_write.c vfs: avoid problematic remapping requests into partial EOF block 2019-12-01 09:17:04 +01:00
readdir.c readdir: make sure to verify directory entry for legacy interfaces too 2021-04-28 13:16:50 +02:00
select.c kernel, fs: Introduce and use set_restart_fn() and arch_set_restart_data() 2021-03-24 11:07:37 +01:00
seq_file.c seq_file: disallow extremely large seq buffer allocations 2021-07-20 16:16:16 +02:00
signalfd.c signalfd: use wake_up_pollfree() 2021-12-14 10:18:07 +01:00
splice.c splice: only read in as much information as there is pipe buffer space 2019-12-17 20:35:43 +01:00
stack.c
stat.c
statfs.c vfs: Fix EOVERFLOW testing in put_compat_statfs64 2019-10-11 18:21:39 +02:00
super.c vfs: remove lockdep bogosity in __sb_start_write 2020-11-24 13:27:20 +01:00
sync.c
timerfd.c
userfaultfd.c userfaultfd: prevent concurrent API initialization 2021-09-22 11:48:02 +02:00
utimes.c
xattr.c xattr: break delegations in {set,remove}xattr 2020-08-11 15:32:34 +02:00