From 3e2a532b26b491706bd8b5c7cfc8d767b43b8f36 Mon Sep 17 00:00:00 2001 From: OGAWA Hirofumi Date: Thu, 19 Oct 2006 23:29:11 -0700 Subject: [PATCH] ext3/4: fix J_ASSERT(transaction->t_updates > 0) in journal_stop() A disk generated some I/O error, after it, I hitted J_ASSERT(transaction->t_updates > 0) in journal_stop(). It seems to happened on ext3_truncate() path from stack trace. Then, maybe the following case may trigger J_ASSERT(transaction->t_updates > 0). ext3_truncate() -> ext3_free_branches() -> ext3_journal_test_restart() -> ext3_journal_restart() -> journal_restart() transaction->t_updates--; /* another process aborted journal */ -> start_this_handle() returns -EROFS without transaction->t_updates++; -> ext3_journal_stop() -> journal_stop() J_ASSERT(transaction->t_updates > 0) If journal was aborted in middle of journal_restart(), ext3_truncate() may trigger J_ASSERT(). Signed-off-by: OGAWA Hirofumi Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/jbd/transaction.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'fs/jbd') diff --git a/fs/jbd/transaction.c b/fs/jbd/transaction.c index e1b3c8af4d1..d5c63047a8b 100644 --- a/fs/jbd/transaction.c +++ b/fs/jbd/transaction.c @@ -1314,13 +1314,14 @@ int journal_stop(handle_t *handle) int old_handle_count, err; pid_t pid; - J_ASSERT(transaction->t_updates > 0); J_ASSERT(journal_current_handle() == handle); if (is_handle_aborted(handle)) err = -EIO; - else + else { + J_ASSERT(transaction->t_updates > 0); err = 0; + } if (--handle->h_ref > 0) { jbd_debug(4, "h_ref %d -> %d\n", handle->h_ref + 1, -- cgit