qiurui
/
Ubuntu-focal-kernel
mirror of https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/focal
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

ext4: do not trim the group with corrupted block bitmap 

BugLink: https://bugs.launchpad.net/bugs/2080595

[ Upstream commit 172202152a125955367393956acf5f4ffd092e0d ]

Otherwise operating on an incorrupted block bitmap can lead to all sorts
of unknown problems.

Signed-off-by: Baokun Li <libaokun1@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20240104142040.2835097-3-libaokun1@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
This commit is contained in:
Baokun Li 2024-01-04 22:20:34 +08:00 committed by Stefan Bader
parent 748d77fe7a
commit 69d6efdb83
1 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
fs/ext4/mballoc.c
View File

@ -5228,6 +5228,9 @@ static int ext4_try_to_trim_range(struct super_block *sb,
bool set_trimmed = false;
void *bitmap;
if (unlikely(EXT4_MB_GRP_BBITMAP_CORRUPT(e4b->bd_info)))
return 0;
last = ext4_last_grp_cluster(sb, e4b->bd_group);
bitmap = e4b->bd_bitmap;
if (start == 0 && max >= last)