Ojaswin Mujoo faeff8b1ee ext4: check stripe size compatibility on remount as well ...

[ Upstream commit ee85e0938aa8f9846d21e4d302c3cf6a2a75110d ]

We disable stripe size in __ext4_fill_super if it is not a multiple of
the cluster ratio however this check is missed when trying to remount.
This can leave us with cases where stripe < cluster_ratio after
remount:set making EXT4_B2C(sbi->s_stripe) become 0 that can cause some
unforeseen bugs like divide by 0.

Fix that by adding the check in remount path as well.

Reported-by: syzbot+1ad8bac5af24d01e2cbd@syzkaller.appspotmail.com
Tested-by: syzbot+1ad8bac5af24d01e2cbd@syzkaller.appspotmail.com
Reviewed-by: Kemeng Shi <shikemeng@huaweicloud.com>
Reviewed-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com>
Fixes: c3defd99d5 ("ext4: treat stripe in block unit")
Signed-off-by: Ojaswin Mujoo <ojaswin@linux.ibm.com>
Link: https://patch.msgid.link/3a493bb503c3598e25dcfbed2936bb2dff3fece7.1725002410.git.ojaswin@linux.ibm.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2024-10-04 16:29:21 +02:00

..

.kunitconfig

ext4: add .kunitconfig fragment to enable ext4-specific tests

2021-02-11 23:16:30 -05:00

acl.c

ext4: convert to ctime accessor functions

2023-07-24 10:29:54 +02:00

acl.h

ext4: apply umask if ACL support is disabled

2023-11-28 17:20:15 +00:00

balloc.c

ext4: add correct group descriptors and reserved GDT blocks to system zone

2023-08-27 11:27:12 -04:00

bitmap.c

ext4: remove useless conditional branch code

2023-04-19 23:39:08 -04:00

block_validity.c

ext4: add correct group descriptors and reserved GDT blocks to system zone

2023-08-27 11:27:12 -04:00

crypto.c

ext4: fix memory leaks in ext4_fname_{setup_filename,prepare_lookup}

2023-08-05 08:17:56 -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

Merge tag 'ext4_for_linus-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

2023-08-31 15:18:15 -07:00

ext4_jbd2.h

ext4: split ext4_journal_start trace for debug

2022-12-01 10:46:54 -05:00

ext4.h

quota: Properly annotate i_dquot arrays with __rcu

2024-03-26 18:19:46 -04:00

extents_status.c

ext4: fix infinite loop when replaying fast_commit

2024-08-03 08:53:53 +02:00

extents_status.h

ext4: make ext4_es_insert_extent() return void

2023-06-26 19:35:12 -04:00

extents.c

ext4: set the type of max_zeroout to unsigned int to avoid overflow

2024-08-29 17:33:40 +02:00

fast_commit.c

ext4: fix possible tid_t sequence overflows

2024-09-12 11:11:37 +02:00

fast_commit.h

ext4: add missing validation of fast-commit record lengths

2022-12-08 21:49:24 -05:00

file.c

ext4: fix warning in ext4_dio_write_end_io()

2023-12-20 17:01:42 +01:00

fsmap.c

ext4: fix another off-by-one fsmap error on 1k block filesystems

2023-03-07 20:20:48 -05:00

fsmap.h

ext4: fsmap: fix the block/inode bitmap comment

2021-06-24 09:48:29 -04:00

fsync.c

ext4: drop EXT4_MF_FS_ABORTED flag

2023-07-29 18:37:53 -04:00

hash.c

ext4: remove redundant checks of s_encoding

2023-08-27 11:27:13 -04:00

ialloc.c

ext4: avoid negative min_clusters in find_group_orlov()

2024-10-04 16:29:20 +02:00

indirect.c

ext4: only update i_reserved_data_blocks on successful block allocation

2023-06-26 19:34:56 -04:00

inline.c

ext4: avoid OOB when system.data xattr changes underneath the filesystem

2024-10-04 16:29:21 +02:00

inode-test.c

ext4: convert to ctime accessor functions

2023-07-24 10:29:54 +02:00

inode.c

ext4: sanity check for NULL pointer after ext4_force_shutdown

2024-08-19 06:04:29 +02:00

ioctl.c

Merge tag 'ext4_for_linus-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

2023-08-31 15:18:15 -07:00

Kconfig

fs: add CONFIG_BUFFER_HEAD

2023-08-02 09:13:09 -06:00

Makefile

ext4: move ext4 crypto code to its own file crypto.c

2022-05-21 22:24:24 -04:00

mballoc.c

ext4: clear EXT4_GROUP_INFO_WAS_TRIMMED_BIT even mount with discard

2024-10-04 16:29:20 +02:00

mballoc.h

ext4: set type of ac_groups_linear_remaining to __u32 to avoid overflow

2024-06-16 13:47:44 +02:00

migrate.c

ext4: avoid deadlock in fs reclaim with page writeback

2023-05-13 18:05:04 -04:00

mmp.c

ext4: replace read-only check for shutdown check in mmp code

2023-07-29 18:37:53 -04:00

move_extent.c

ext4: fix double-free of blocks due to wrong extents moved_len

2024-02-23 09:25:04 +01:00

namei.c

ext4: make sure the first directory block is not a hole

2024-08-03 08:54:17 +02:00

orphan.c

ext4: remove trailing newline from ext4_msg() message

2022-12-08 21:49:23 -05:00

page-io.c

ext4: make ext4_forced_shutdown() take struct super_block

2023-07-29 18:37:24 -04:00

readpage.c

ext4: Call fsverity_verify_folio()

2023-06-15 00:02:10 -04:00

resize.c

ext4: fix corruption during on-line resize

2024-04-03 15:28:28 +02:00

super.c

ext4: check stripe size compatibility on remount as well

2024-10-04 16:29:21 +02:00

symlink.c

fs: port ->getattr() to pass mnt_idmap

2023-01-19 09:24:25 +01:00

sysfs.c

ext4: avoid ptr null pointer dereference

2024-07-18 13:21:25 +02:00

truncate.h

ext4: Convert to use mapping->invalidate_lock

2021-07-13 14:29:00 +02:00

verity.c

Merge tag 'mm-stable-2023-04-27-15-30' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2023-04-27 19:42:02 -07:00

xattr_hurd.c

fs: port xattr to mnt_idmap

2023-01-19 09:24:28 +01:00

xattr_security.c

fs: port xattr to mnt_idmap

2023-01-19 09:24:28 +01:00

xattr_trusted.c

fs: port xattr to mnt_idmap

2023-01-19 09:24:28 +01:00

xattr_user.c

fs: port xattr to mnt_idmap

2023-01-19 09:24:28 +01:00

xattr.c

ext4: do not create EA inode under buffer lock

2024-08-19 06:04:28 +02:00

xattr.h

ext4: remove EA inode entry from mbcache on inode eviction

2022-08-02 23:56:25 -04:00