On Wed, Jul 14, 2021 at 02:18:57PM +1000, Dave Chinner wrote: > From: Dave Chinner <dchinner@xxxxxxxxxx> > > The verifier checks explicitly for bp->b_bn == XFS_SB_DADDR to match > the primary superblock buffer, but the primary superblock is an > uncached buffer and so bp->b_bn is always -1ULL. Hence this never > matches and the CRC error reporting is wholly dependent on the > mount superblock already being populated so CRC feature checks pass > and allow CRC errors to be reported. > > Fix this so that the primary superblock CRC error reporting is not > dependent on already having read the superblock into memory. Looks good, Reviewed-by: Christoph Hellwig <hch@xxxxxx> .. in the long run we really need to kill of b_bn to avoid this kind of confusion.