Commit 4c47ad35 authored by Theodore Ts'o's avatar Theodore Ts'o Committed by Sasha Levin

jbd2: don't leak modified metadata buffers on an aborted journal

[ Upstream commit e112666b ]

If the journal has been aborted, we shouldn't mark the underlying
buffer head as dirty, since that will cause the metadata block to get
modified.  And if the journal has been aborted, we shouldn't allow
this since it will almost certainly lead to a corrupted file system.
Signed-off-by: default avatarTheodore Ts'o <tytso@mit.edu>
Cc: stable@vger.kernel.org
Signed-off-by: default avatarSasha Levin <alexander.levin@verizon.com>
parent 2b24a836
......@@ -1778,7 +1778,9 @@ static void __jbd2_journal_temp_unlink_buffer(struct journal_head *jh)
__blist_del_buffer(list, jh);
jh->b_jlist = BJ_None;
if (test_clear_buffer_jbddirty(bh))
if (transaction && is_journal_aborted(transaction->t_journal))
clear_buffer_jbddirty(bh);
else if (test_clear_buffer_jbddirty(bh))
mark_buffer_dirty(bh); /* Expose it to the VM */
}
......
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