diff options
| author | Kai Li <li.kai4@h3c.com> | 2020-01-11 10:25:42 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-02-28 15:42:21 +0100 |
| commit | 0d9363214284382c42fac25162f2a8b68659ecb9 (patch) | |
| tree | 4f0edba519ded77c50919615b87f72aa501da576 /fs | |
| parent | 8efbca5ac9070a9d954825b9efa90fbfd3bc6ba5 (diff) | |
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>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/jbd2/journal.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c index 3cbcf649ac66..40c754854b29 100644 --- a/fs/jbd2/journal.c +++ b/fs/jbd2/journal.c @@ -1670,6 +1670,11 @@ int jbd2_journal_load(journal_t *journal) journal->j_devname); return -EFSCORRUPTED; } + /* + * clear JBD2_ABORT flag initialized in journal_init_common + * here to update log tail information with the newest seq. + */ + journal->j_flags &= ~JBD2_ABORT; /* OK, we've finished with the dynamic journal bits: * reinitialise the dynamic contents of the superblock in memory @@ -1677,7 +1682,6 @@ int jbd2_journal_load(journal_t *journal) if (journal_reset(journal)) goto recovery_error; - journal->j_flags &= ~JBD2_ABORT; journal->j_flags |= JBD2_LOADED; return 0; |