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xfs: actually check internal-rtdev fields in the superblock

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LOLLM points out that the superblock scrubber doesn't check the new
fields that were added for internal realtime volumes when we added zoned
device support.

Cc: stable@vger.kernel.org # v6.15
Fixes: 2167eaabe2 ("xfs: define the zoned on-disk format")
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Assisted-by: LOLLM # finding obvious bugs
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
This commit is contained in:
Darrick J. Wong 2026-09-08 23:04:50 -07:00 committed by Carlos Maiolino
parent 4d3c075915
commit 1ee2ce797c
1 changed files with 7 additions and 0 deletions
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7
fs/xfs/scrub/agheader.c
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@ -418,6 +418,13 @@ xchk_superblock(
xchk_block_set_corrupt(sc, bp);
}
if (xfs_has_zoned(mp)) {
if (sb->sb_rtstart != cpu_to_be64(mp->m_sb.sb_rtstart))
xchk_block_set_corrupt(sc, bp);
if (sb->sb_rtreserved != cpu_to_be64(mp->m_sb.sb_rtreserved))
xchk_block_set_corrupt(sc, bp);
}
/* Everything else must be zero. */
sblen = xchk_superblock_ondisk_size(mp);
if (memchr_inv((char *)sb + sblen, 0, BBTOB(bp->b_length) - sblen))