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ext4: forbid commit inconsistent quota data when errors=remount-ro 

[ Upstream commit d8b945fa47 ]

There's issue as follows When do IO fault injection test:
Quota error (device dm-3): find_block_dqentry: Quota for id 101 referenced but not present
Quota error (device dm-3): qtree_read_dquot: Can't read quota structure for id 101
Quota error (device dm-3): do_check_range: Getting block 2021161007 out of range 1-186
Quota error (device dm-3): qtree_read_dquot: Can't read quota structure for id 661

Now, ext4_write_dquot()/ext4_acquire_dquot()/ext4_release_dquot() may commit
inconsistent quota data even if process failed. This may lead to filesystem
corruption.
To ensure filesystem consistent when errors=remount-ro there is need to call
ext4_handle_error() to abort journal.

Signed-off-by: Ye Bin <yebin10@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20240119062908.3598806-1-yebin10@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Ye Bin 2024-01-19 14:29:08 +08:00 committed by Greg Kroah-Hartman
parent 19b7a1ff81
commit ad207d1ca6
1 changed files with 12 additions and 0 deletions
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12
fs/ext4/super.c
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@ -6170,6 +6170,10 @@ static int ext4_write_dquot(struct dquot *dquot)
if (IS_ERR(handle))
return PTR_ERR(handle);
ret = dquot_commit(dquot);
if (ret < 0)
ext4_error_err(dquot->dq_sb, -ret,
"Failed to commit dquot type %d",
dquot->dq_id.type);
err = ext4_journal_stop(handle);
if (!ret)
ret = err;
@ -6186,6 +6190,10 @@ static int ext4_acquire_dquot(struct dquot *dquot)
if (IS_ERR(handle))
return PTR_ERR(handle);
ret = dquot_acquire(dquot);
if (ret < 0)
ext4_error_err(dquot->dq_sb, -ret,
"Failed to acquire dquot type %d",
dquot->dq_id.type);
err = ext4_journal_stop(handle);
if (!ret)
ret = err;
@ -6205,6 +6213,10 @@ static int ext4_release_dquot(struct dquot *dquot)
return PTR_ERR(handle);
}
ret = dquot_release(dquot);
if (ret < 0)
ext4_error_err(dquot->dq_sb, -ret,
"Failed to release dquot type %d",
dquot->dq_id.type);
err = ext4_journal_stop(handle);
if (!ret)
ret = err;