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0aeaa2559d
linux/fs/ext4
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Baokun Li 0aeaa2559d ext4: fix corruption when online resizing a 1K bigalloc fs 
When a backup superblock is updated in update_backups(), the primary
superblock's offset in the group (that is, sbi->s_sbh->b_blocknr) is used
as the backup superblock's offset in its group. However, when the block
size is 1K and bigalloc is enabled, the two offsets are not equal. This
causes the backup group descriptors to be overwritten by the superblock
in update_backups(). Moreover, if meta_bg is enabled, the file system will
be corrupted because this feature uses backup group descriptors.

To solve this issue, we use a more accurate ext4_group_first_block_no() as
the offset of the backup superblock in its group.

Fixes: d77147ff44 ("ext4: add support for online resizing with bigalloc")
Signed-off-by: Baokun Li <libaokun1@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: stable@kernel.org
Link: https://lore.kernel.org/r/20221117040341.1380702-4-libaokun1@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2022-12-08 21:49:24 -05:00
..
.kunitconfig ext4: add .kunitconfig fragment to enable ext4-specific tests 2021-02-11 23:16:30 -05:00
acl.c fs/ext4: fix comments mentioning i_mutex 2022-02-03 10:57:53 -05:00
acl.h vfs: add rcu argument to ->get_acl() callback 2021-08-18 22:08:24 +02:00
balloc.c ext4: use ext4_debug() instead of jbd_debug() 2022-08-02 23:52:19 -04:00
bitmap.c
block_validity.c ext4: add ext4_sb_block_valid() refactored out of ext4_inode_block_valid() 2022-02-25 21:34:56 -05:00
crypto.c ext4: refactor and move ext4_ioctl_get_encryption_pwsalt() 2022-05-21 22:24:24 -04:00
dir.c ext4: fix spelling errors in comments 2022-05-11 15:19:06 -04:00
ext4_extents.h ext4: fix sparse warnings 2021-08-30 23:36:50 -04:00
ext4_jbd2.c ext4: split ext4_journal_start trace for debug 2022-12-01 10:46:54 -05:00
ext4_jbd2.h ext4: split ext4_journal_start trace for debug 2022-12-01 10:46:54 -05:00
ext4.h ext4: don't set up encryption key during jbd2 transaction 2022-12-08 21:49:24 -05:00
extents_status.c ext4: replace kmem_cache_create with KMEM_CACHE 2022-12-08 21:49:24 -05:00
extents_status.h
extents.c fs/ext4: replace ternary operator with min()/max() and min_t() 2022-11-29 16:10:49 -05:00
fast_commit.c ext4: simplify fast-commit CRC calculation 2022-12-08 21:49:24 -05:00
fast_commit.h ext4: add missing validation of fast-commit record lengths 2022-12-08 21:49:24 -05:00
file.c The first two changes that involve files outside of fs/ext4: 2022-10-06 17:45:53 -07:00
fsmap.c treewide: Change list_sort to use const pointers 2021-04-08 16:04:22 -07:00
fsmap.h ext4: fsmap: fix the block/inode bitmap comment 2021-06-24 09:48:29 -04:00
fsync.c block: use an on-stack bio in blkdev_issue_flush 2021-01-27 09:51:48 -07:00
hash.c unicode: clean up the Kconfig symbol confusion 2022-01-20 19:57:24 -05:00
ialloc.c ext4: split ext4_journal_start trace for debug 2022-12-01 10:46:54 -05:00
indirect.c ext4: fix error code return to user-space in ext4_get_branch() 2022-12-08 21:49:24 -05:00
inline.c fs/ext4: replace ternary operator with min()/max() and min_t() 2022-11-29 16:10:49 -05:00
inode-test.c
inode.c ext4: fix use-after-free in ext4_orphan_cleanup 2022-12-08 21:49:24 -05:00
ioctl.c ext4: don't fail GETFSUUID when the caller provides a long buffer 2022-12-08 21:49:24 -05:00
Kconfig ext: EXT4_KUNIT_TESTS should depend on EXT4_FS instead of selecting it 2021-02-11 23:12:59 -05:00
Makefile ext4: move ext4 crypto code to its own file crypto.c 2022-05-21 22:24:24 -04:00
mballoc.c ext4: fixup possible uninitialized variable access in ext4_mb_choose_next_group_cr1() 2022-09-26 13:21:05 -04:00
mballoc.h ext4: use buckets for cr 1 block scan instead of rbtree 2022-09-21 22:12:03 -04:00
migrate.c ext4: fix warning in 'ext4_da_release_space' 2022-11-06 01:07:59 -04:00
mmp.c treewide: use get_random_u32() when possible 2022-10-11 17:42:58 -06:00
move_extent.c ext4: factor out ext4_free_ext_path() 2022-09-30 23:46:54 -04:00
namei.c ext4: init quota for 'old.inode' in 'ext4_rename' 2022-12-08 21:49:24 -05:00
orphan.c ext4: remove trailing newline from ext4_msg() message 2022-12-08 21:49:23 -05:00
page-io.c ext4: fix incorrect comment in ext4_bio_write_page() 2022-06-16 11:03:16 -04:00
readpage.c ext4: replace kmem_cache_create with KMEM_CACHE 2022-12-08 21:49:24 -05:00
resize.c ext4: fix corruption when online resizing a 1K bigalloc fs 2022-12-08 21:49:24 -05:00
super.c ext4: correct inconsistent error msg in nojournal mode 2022-12-08 21:49:24 -05:00
symlink.c ext4: fix reading leftover inlined symlinks 2022-08-02 23:37:50 -04:00
sysfs.c unicode: clean up the Kconfig symbol confusion 2022-01-20 19:57:24 -05:00
truncate.h ext4: Convert to use mapping->invalidate_lock 2021-07-13 14:29:00 +02:00
verity.c - Alistair Popple has a series which addresses a race which causes page 2022-10-14 12:28:43 -07:00
xattr_hurd.c acl: handle idmapped mounts 2021-01-24 14:27:17 +01:00
xattr_security.c acl: handle idmapped mounts 2021-01-24 14:27:17 +01:00
xattr_trusted.c acl: handle idmapped mounts 2021-01-24 14:27:17 +01:00
xattr_user.c acl: handle idmapped mounts 2021-01-24 14:27:17 +01:00
xattr.c ext4: check the return value of ext4_xattr_inode_dec_ref() 2022-12-01 10:46:54 -05:00
xattr.h ext4: remove EA inode entry from mbcache on inode eviction 2022-08-02 23:56:25 -04:00