On Fri, Jul 10, 2020 at 04:07:59PM +0200, Jan Kara wrote: > A customer has reported a BUG_ON in ext4_clear_journal_err() hitting > during an LTP testing. Either this has been caused by a test setup > issue where the filesystem was being overwritten while LTP was mounting > it or the journal replay has overwritten the superblock with invalid > data. In either case it is preferable we don't take the machine down > with a BUG_ON. So handle the situation of unexpectedly missing > has_journal feature more gracefully. We issue warning and fail the mount > in the cases where the race window is narrow and the failed check is > most likely a programming error. In cases where fs corruption is more > likely, we do full ext4_error() handling before failing mount / remount. > > Reviewed-by: Lukas Czerner <lczerner@xxxxxxxxxx> > Signed-off-by: Jan Kara <jack@xxxxxxx> Applied, thanks. - Ted
