Kai Li 5541d39962 jbd2: clear JBD2_ABORT flag before journal_reset to update log tail info when load journal
[ Upstream commit a09decff5c32060639a685581c380f51b14e1fc2 ]

If the journal is dirty when the filesystem is mounted, jbd2 will replay
the journal but the journal superblock will not be updated by
journal_reset() because JBD2_ABORT flag is still set (it was set in
journal_init_common()). This is problematic because when a new transaction
is then committed, it will be recorded in block 1 (journal->j_tail was set
to 1 in journal_reset()). If unclean shutdown happens again before the
journal superblock is updated, the new recorded transaction will not be
replayed during the next mount (because of stale sb->s_start and
sb->s_sequence values) which can lead to filesystem corruption.

Fixes: 85e0c4e89c1b ("jbd2: if the journal is aborted then don't allow update of the log tail")
Signed-off-by: Kai Li <li.kai4@h3c.com>
Link: https://lore.kernel.org/r/20200111022542.5008-1-li.kai4@h3c.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-02-28 15:38:55 +01:00
..
2017-12-20 10:04:56 +01:00
2019-08-06 18:28:27 +02:00
2019-12-21 10:34:44 +01:00
2019-12-21 10:34:49 +01:00
2017-11-30 08:37:20 +00:00
2019-03-23 08:44:21 +01:00
2020-02-28 15:38:54 +01:00
2018-12-21 14:09:50 +01:00
2015-11-10 12:07:22 -08:00
2015-11-16 23:54:45 -08:00
2015-11-16 23:54:45 -08:00
2017-06-14 13:16:24 +02:00
2020-02-05 13:03:37 +00:00
2018-02-16 20:09:43 +01:00
2017-06-14 13:16:24 +02:00
2018-09-09 20:04:36 +02:00