On Tue, Feb 04, 2020 at 04:46:34PM -0800, Darrick J. Wong wrote: > From: Darrick J. Wong <darrick.wong@xxxxxxxxxx> > > In process_longform_attr, we enforce that the root block of the > attribute index must have both forw or back pointers set to zero. > Unfortunately, the code that nulls out the pointers is not aware that > the root block could be in da3 node format. > > This leads to corruption of da3 root node blocks because the functions > that convert attr3 leaf headers to and from the ondisk structures > perform some interpretation of firstused on what they think is an attr1 > leaf block. > > Found by using xfs/402 to fuzz hdr.info.hdr.forw. > > Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx> Looks good, Reviewed-by: Christoph Hellwig <hch@xxxxxx>
