Chao Yu 8acae04721 f2fs: compress: don't allow unaligned truncation on released compress inode ...

[ Upstream commit 29ed2b5dd521ce7c5d8466cd70bf0cc9d07afeee ]

f2fs image may be corrupted after below testcase:
- mkfs.f2fs -O extra_attr,compression -f /dev/vdb
- mount /dev/vdb /mnt/f2fs
- touch /mnt/f2fs/file
- f2fs_io setflags compression /mnt/f2fs/file
- dd if=/dev/zero of=/mnt/f2fs/file bs=4k count=4
- f2fs_io release_cblocks /mnt/f2fs/file
- truncate -s 8192 /mnt/f2fs/file
- umount /mnt/f2fs
- fsck.f2fs /dev/vdb

[ASSERT] (fsck_chk_inode_blk:1256)  --> ino: 0x5 has i_blocks: 0x00000002, but has 0x3 blocks
[FSCK] valid_block_count matching with CP             [Fail] [0x4, 0x5]
[FSCK] other corrupted bugs                           [Fail]

The reason is: partial truncation assume compressed inode has reserved
blocks, after partial truncation, valid block count may change w/o
.i_blocks and .total_valid_block_count update, result in corruption.

This patch only allow cluster size aligned truncation on released
compress inode for fixing.

Fixes: c61404153eb6 ("f2fs: introduce FI_COMPRESS_RELEASED instead of using IMMUTABLE bit")
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2024-06-16 13:39:40 +02:00

..

acl.c

vfs: add rcu argument to ->get_acl() callback

2021-08-18 22:08:24 +02:00

acl.h

vfs: add rcu argument to ->get_acl() callback

2021-08-18 22:08:24 +02:00

checkpoint.c

f2fs: fix typos in comments

2024-06-16 13:39:36 +02:00

compress.c

f2fs: fix typos in comments

2024-06-16 13:39:36 +02:00

data.c

f2fs: fix typos in comments

2024-06-16 13:39:36 +02:00

debug.c

f2fs: use spin_lock to avoid hang

2022-04-08 14:23:58 +02:00

dir.c

f2fs: don't use casefolded comparison for "." and ".."

2022-06-09 10:23:17 +02:00

extent_cache.c

f2fs: fix typos in comments

2024-06-16 13:39:36 +02:00

f2fs.h

f2fs: Delete f2fs_copy_page() and replace with memcpy_page()

2024-06-16 13:39:34 +02:00

file.c

f2fs: compress: don't allow unaligned truncation on released compress inode

2024-06-16 13:39:40 +02:00

gc.c

f2fs: reduce stack memory cost by using bitfield in struct f2fs_io_info

2024-03-26 18:21:32 -04:00

gc.h

f2fs: introduce gc_merge mount option

2021-03-30 18:48:56 -07:00

hash.c

f2fs: don't use casefolded comparison for "." and ".."

2022-06-09 10:23:17 +02:00

inline.c

f2fs: do not bother checkpoint by f2fs_get_node_info

2023-03-17 08:48:50 +01:00

inode.c

f2fs: retry to update the inode page given data corruption

2023-03-17 08:48:50 +01:00

iostat.c

f2fs: fix to avoid potential memory corruption in __update_iostat_latency()

2023-03-11 13:57:26 +01:00

iostat.h

f2fs: introduce periodic iostat io latency traces

2021-08-23 10:25:51 -07:00

Kconfig

f2fs: separate out iostat feature

2021-08-23 10:25:51 -07:00

Makefile

f2fs: separate out iostat feature

2021-08-23 10:25:51 -07:00

namei.c

f2fs: fix typos in comments

2024-06-16 13:39:36 +02:00

node.c

f2fs: fix to release node block count in error path of f2fs_new_node_page()

2024-06-16 13:39:39 +02:00

node.h

f2fs: swap: support migrating swapfile in aligned write mode

2021-06-23 01:09:35 -07:00

recovery.c

f2fs: fix write pointers on zoned device after roll forward

2024-02-23 08:54:46 +01:00

segment.c

f2fs: fix typos in comments

2024-06-16 13:39:36 +02:00

segment.h

f2fs: apply zone capacity to all zone type

2023-05-11 23:00:27 +09:00

shrinker.c

f2fs: avoid race condition for shrinker count

2020-12-03 00:59:26 -08:00

super.c

f2fs: replace congestion_wait() calls with io_schedule_timeout()

2024-03-26 18:21:32 -04:00

sysfs.c

f2fs: fix iostat lock protection

2023-06-14 11:13:00 +02:00

verity.c

fs: f2fs: initialize fsdata in pagecache_write()

2023-03-11 13:57:23 +01:00

xattr.c

f2fs: explicitly null-terminate the xattr list

2024-01-25 14:52:27 -08:00

xattr.h

f2fs: code cleanup by removing ifdef macro surrounding

2020-05-26 18:56:10 -07:00