Chao Yu b8962cf985 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 13:32:21 +02:00

..

acl.c

f2fs: clean up kvfree

2020-09-14 11:15:37 -07:00

acl.h

f2fs: Use the correct style for SPDX License Identifier

2020-05-08 06:55:55 -07:00

checkpoint.c

f2fs: fix typos in comments

2024-06-16 13:32:18 +02:00

compress.c

f2fs: fix typos in comments

2024-06-16 13:32:18 +02:00

data.c

f2fs: fix typos in comments

2024-06-16 13:32:18 +02:00

debug.c

f2fs: avoid race condition for shrinker count

2021-01-06 14:56:54 +01:00

dir.c

f2fs: reduce the scope of setting fsck tag when de->name_len is zero

2021-09-18 13:40:13 +02:00

extent_cache.c

f2fs: fix typos in comments

2024-06-16 13:32:18 +02:00

f2fs.h

f2fs: introduce FI_COMPRESS_RELEASED instead of using IMMUTABLE bit

2024-06-16 13:32:17 +02:00

file.c

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

2024-06-16 13:32:21 +02:00

gc.c

f2fs: fix to do sanity check on inode type during garbage collection

2023-11-08 17:30:46 +01:00

gc.h

f2fs: support age threshold based garbage collection

2020-09-11 11:11:15 -07:00

hash.c

f2fs-for-5.8-rc1

2020-06-09 11:28:59 -07:00

inline.c

f2fs: use memcpy_{to,from}_page() where possible

2023-03-11 16:40:09 +01:00

inode.c

f2fs: compress: support chksum

2024-06-16 13:32:17 +02:00

Kconfig

f2fs: compress: support lzo-rle compress algorithm

2020-05-11 20:36:46 -07:00

Makefile

f2fs: support data compression

2020-01-17 16:48:07 -08:00

namei.c

f2fs: fix typos in comments

2024-06-16 13:32:18 +02:00

node.c

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

2024-06-16 13:32:21 +02:00

node.h

f2fs: avoid race condition for shrinker count

2021-01-06 14:56:54 +01:00

recovery.c

f2fs: fix write pointers on zoned device after roll forward

2024-02-23 08:42:11 +01:00

segment.c

f2fs: fix typos in comments

2024-06-16 13:32:18 +02:00

segment.h

f2fs: apply zone capacity to all zone type

2023-05-17 11:47:49 +02:00

shrinker.c

f2fs: avoid race condition for shrinker count

2021-01-06 14:56:54 +01:00

super.c

f2fs: add compress_mode mount option

2024-06-16 13:32:17 +02:00

sysfs.c

f2fs: fix iostat lock protection

2023-06-14 11:09:31 +02:00

trace.c

f2fs: do not use mutex lock in atomic context

2019-03-05 19:58:06 -08:00

trace.h

f2fs: Use the correct style for SPDX License Identifier

2020-05-08 06:55:55 -07:00

verity.c

fs: f2fs: initialize fsdata in pagecache_write()

2023-03-11 16:40:09 +01:00

xattr.c

f2fs: explicitly null-terminate the xattr list

2024-01-25 14:37:35 -08:00

xattr.h

f2fs: code cleanup by removing ifdef macro surrounding

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