diff options
| author | Baokun Li <libaokun1@huawei.com> | 2024-01-04 22:20:34 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-08-29 17:33:32 +0200 |
| commit | 0a56dcce6b820a635208147bf7cd0697b285fbe2 (patch) | |
| tree | 32a31f317500086c79d506f9db018420bedf49e7 | |
| parent | 5b7766ab913bd698031e85dcef53e35547e27a59 (diff) | |
ext4: do not trim the group with corrupted block bitmap
[ 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>
| -rw-r--r-- | fs/ext4/mballoc.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index f55ab800a753..870397f3de55 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -6953,6 +6953,9 @@ __releases(ext4_group_lock_ptr(sb, e4b->bd_group)) 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) |