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| author | Ojaswin Mujoo <ojaswin@linux.ibm.com> | 2024-08-30 12:50:57 +0530 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2024-09-03 22:14:17 -0400 |
| commit | ee85e0938aa8f9846d21e4d302c3cf6a2a75110d (patch) | |
| tree | 5817663212fb77922746c912e98048f3fa652ee1 /rust/build_error.rs | |
| parent | cc749e61c011c255d81b192a822db650c68b313f (diff) | |
ext4: check stripe size compatibility on remount as well
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: c3defd99d58c ("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>
Diffstat (limited to 'rust/build_error.rs')
0 files changed, 0 insertions, 0 deletions