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xfs: validate ag btree levels using the precomputed values

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Use the AG btree height limits that we precomputed into the xfs_mount to
validate the AG headers instead of using XFS_BTREE_MAXLEVELS.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Darrick J. Wong 2021-03-22 09:51:54 -07:00
parent f53acface7
commit 973975b72a
3 changed files with 7 additions and 7 deletions
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4
fs/xfs/libxfs/xfs_ialloc.c
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@ -2535,12 +2535,12 @@ xfs_agi_verify(
return __this_address;
if (be32_to_cpu(agi->agi_level) < 1 ||
be32_to_cpu(agi->agi_level) > XFS_BTREE_MAXLEVELS)
be32_to_cpu(agi->agi_level) > M_IGEO(mp)->inobt_maxlevels)
return __this_address;
if (xfs_sb_version_hasfinobt(&mp->m_sb) &&
(be32_to_cpu(agi->agi_free_level) < 1 ||
be32_to_cpu(agi->agi_free_level) > XFS_BTREE_MAXLEVELS))
be32_to_cpu(agi->agi_free_level) > M_IGEO(mp)->inobt_maxlevels))
return __this_address;
/*