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xfs: check shortform attr entry flags specifically

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commit 309dc9cbbb upstream.

While reviewing flag checking in the attr scrub functions, we noticed
that the shortform attr scanner didn't catch entries that have the LOCAL
or INCOMPLETE bits set.  Neither of these flags can ever be set on a
shortform attr, so we need to check this narrower set of valid flags.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Catherine Hoang <catherine.hoang@oracle.com>
Acked-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Darrick J. Wong 2024-10-15 17:11:12 -07:00 committed by Greg Kroah-Hartman
parent cad051826d
commit db460c26f0
1 changed files with 9 additions and 0 deletions
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9
fs/xfs/scrub/attr.c
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@ -566,6 +566,15 @@ xchk_xattr_check_sf(
break;
}
/*
* Shortform entries do not set LOCAL or INCOMPLETE, so the
* only valid flag bits here are for namespaces.
*/
if (sfe->flags & ~XFS_ATTR_NSP_ONDISK_MASK) {
xchk_fblock_set_corrupt(sc, XFS_ATTR_FORK, 0);
break;
}
if (!xchk_xattr_set_map(sc, ab->usedmap,
(char *)sfe - (char *)sf,
sizeof(struct xfs_attr_sf_entry))) {