xfs: cross-reference the rtgroup superblock extent, not block

LOLLM noticed that when libxfs creates a realtime superblock, it will
create an rtrmapbt record covering the entire rtextent in which the
superblock lives.  However, the cross-referencing checks only look for
the first block, which means that we can miss a corrupt rtrmap record.
That will get picked up by the rtrmap scrubber, but we should make the
rgsuper scrubber more robust anyway.

Cc: stable@vger.kernel.org # v6.13
Fixes: 3f1bdf50ab1b9c ("xfs: scrub the realtime group superblock")
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Assisted-by: LOLLM # finding obvious bugs
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Carlos Maiolino <cem@kernel.org>

0 files changed, 0 insertions, 0 deletions