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f8a7c34232
android_kernel_xiaomi_sm8450/fs
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Zhihao Cheng f8a7c34232 ext4: dax: fix overflowing extents beyond inode size when partially writing 
[ Upstream commit dda898d7ffe85931f9cca6d702a51f33717c501e ]

The dax_iomap_rw() does two things in each iteration: map written blocks
and copy user data to blocks. If the process is killed by user(See signal
handling in dax_iomap_iter()), the copied data will be returned and added
on inode size, which means that the length of written extents may exceed
the inode size, then fsck will fail. An example is given as:

dd if=/dev/urandom of=file bs=4M count=1
 dax_iomap_rw
  iomap_iter // round 1
   ext4_iomap_begin
    ext4_iomap_alloc // allocate 0~2M extents(written flag)
  dax_iomap_iter // copy 2M data
  iomap_iter // round 2
   iomap_iter_advance
    iter->pos += iter->processed // iter->pos = 2M
   ext4_iomap_begin
    ext4_iomap_alloc // allocate 2~4M extents(written flag)
  dax_iomap_iter
   fatal_signal_pending
  done = iter->pos - iocb->ki_pos // done = 2M
 ext4_handle_inode_extension
  ext4_update_inode_size // inode size = 2M

fsck reports: Inode 13, i_size is 2097152, should be 4194304.  Fix?

Fix the problem by truncating extents if the written length is smaller
than expected.

Fixes: 776722e85d ("ext4: DAX iomap write support")
CC: stable@vger.kernel.org
Link: https://bugzilla.kernel.org/show_bug.cgi?id=219136
Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Zhihao Cheng <chengzhihao1@huawei.com>
Link: https://patch.msgid.link/20240809121532.2105494-1-chengzhihao@huaweicloud.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-10-17 15:08:26 +02:00
..
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: wait for fixup workers before stopping cleaner kthread during umount 2024-10-17 15:08:25 +02:00
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 smb: client: fix deadlock in smb2_find_smb_tcon() 2024-07-05 09:12:45 +02:00
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 memory leak in exfat_load_bitmap() 2024-10-17 15:08:22 +02:00
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: dax: fix overflowing extents beyond inode size when partially writing 2024-10-17 15:08:26 +02:00
f2fs f2fs: Require FMODE_WRITE for atomic write ioctls 2024-10-17 15:08:09 +02:00
fat fat: fix uninitialized field in nostale filehandles 2024-04-13 12:58:08 +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: fix to avoid false alarm of circular locking 2024-08-19 05:40:40 +02:00
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 xfs: use current->journal_info for detecting transaction recursion 2022-07-07 17:52:19 +02:00
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 potential illegal address access in jffs2_free_inode 2024-07-18 13:05:41 +02:00
jfs jfs: Fix uninit-value access of new_ea in ea_buffer 2024-10-17 15:08:15 +02:00
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: fix memory leak in error path of nfs4_do_reclaim 2024-10-17 15:08:03 +02:00
nfs_common NFSD: Add an xdr_stream-based encoder for NFSv2/3 ACLs 2024-06-21 14:53:03 +02:00
nfsd NFSD: Fix NFSv4's PUTPUBFH operation 2024-10-17 15:08:23 +02:00
nilfs2 nilfs2: fix potential oob read in nilfs_btree_check_delete() 2024-10-17 15:07:51 +02:00
nls fs/nls: make load_nls() take a const parameter 2023-09-19 12:20:04 +02:00
notify fsnotify: clear PARENT_WATCHED flags lazily 2024-09-12 11:06:41 +02:00
ntfs ntfs: check overflow when iterating ATTR_RECORDs 2022-11-25 17:45:57 +01:00
ocfs2 ocfs2: fix possible null-ptr-deref in ocfs2_set_buffer_uptodate 2024-10-17 15:08:22 +02:00
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: do not fail because of O_NOATIME 2024-09-04 13:17:45 +02:00
proc proc: add config & param to block forcing mem writes 2024-10-17 15:08:12 +02:00
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: Remove BUG_ON from dqget() 2024-09-04 13:17:35 +02:00
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: Set page uptodate in the correct place 2024-04-13 12:58:09 +02:00
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 unicode: Add utf8_casefold_hash 2020-09-10 14:03:31 -07:00
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: verify buffer contents when we skip log replay 2023-06-14 11:09:59 +02:00
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 parisc: Fix stack start for ADDR_NO_RANDOMIZE personality 2024-10-17 15:08:20 +02:00
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 ftruncate: pass a signed offset 2024-07-05 09:12:55 +02:00
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 Revert "fs: check FMODE_LSEEK to control internal pipe splicing" 2022-10-17 17:26:07 +02:00
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