xfs: validate ag btree levels using the precomputed values

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>

diff --git a/fs/xfs/libxfs/xfs_alloc.c b/fs/xfs/libxfs/xfs_alloc.c
index 0c623d3..aaa1910 100644 (file)
--- a/fs/xfs/libxfs/xfs_alloc.c
+++ b/fs/xfs/libxfs/xfs_alloc.c
@@ -2906,13 +2906,13 @@ xfs_agf_verify(
 
        if (be32_to_cpu(agf->agf_levels[XFS_BTNUM_BNO]) < 1 ||
            be32_to_cpu(agf->agf_levels[XFS_BTNUM_CNT]) < 1 ||
-           be32_to_cpu(agf->agf_levels[XFS_BTNUM_BNO]) > XFS_BTREE_MAXLEVELS ||
-           be32_to_cpu(agf->agf_levels[XFS_BTNUM_CNT]) > XFS_BTREE_MAXLEVELS)
+           be32_to_cpu(agf->agf_levels[XFS_BTNUM_BNO]) > mp->m_ag_maxlevels ||
+           be32_to_cpu(agf->agf_levels[XFS_BTNUM_CNT]) > mp->m_ag_maxlevels)
                return __this_address;
 
        if (xfs_sb_version_hasrmapbt(&mp->m_sb) &&
            (be32_to_cpu(agf->agf_levels[XFS_BTNUM_RMAP]) < 1 ||
-            be32_to_cpu(agf->agf_levels[XFS_BTNUM_RMAP]) > XFS_BTREE_MAXLEVELS))
+            be32_to_cpu(agf->agf_levels[XFS_BTNUM_RMAP]) > mp->m_rmap_maxlevels))
                return __this_address;
 
        if (xfs_sb_version_hasrmapbt(&mp->m_sb) &&
@@ -2939,7 +2939,7 @@ xfs_agf_verify(
 
        if (xfs_sb_version_hasreflink(&mp->m_sb) &&
            (be32_to_cpu(agf->agf_refcount_level) < 1 ||
-            be32_to_cpu(agf->agf_refcount_level) > XFS_BTREE_MAXLEVELS))
+            be32_to_cpu(agf->agf_refcount_level) > mp->m_refc_maxlevels))
                return __this_address;
 
        return NULL;

diff --git a/fs/xfs/libxfs/xfs_ialloc.c b/fs/xfs/libxfs/xfs_ialloc.c
index 69b228f..eefdb51 100644 (file)
--- a/fs/xfs/libxfs/xfs_ialloc.c
+++ b/fs/xfs/libxfs/xfs_ialloc.c
@@ -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;
 
        /*

diff --git a/fs/xfs/libxfs/xfs_inode_fork.c b/fs/xfs/libxfs/xfs_inode_fork.c
index e080d7e..192bcf3 100644 (file)
--- a/fs/xfs/libxfs/xfs_inode_fork.c
+++ b/fs/xfs/libxfs/xfs_inode_fork.c
@@ -195,7 +195,7 @@ xfs_iformat_btree(
                     XFS_BMDR_SPACE_CALC(nrecs) >
                                        XFS_DFORK_SIZE(dip, mp, whichfork) ||
                     ifp->if_nextents > ip->i_d.di_nblocks) ||
-                    level == 0 || level > XFS_BTREE_MAXLEVELS) {
+                    level == 0 || level > XFS_BM_MAXLEVELS(mp, whichfork)) {
                xfs_warn(mp, "corrupt inode %Lu (btree).",
                                        (unsigned long long) ip->i_ino);
                xfs_inode_verifier_error(ip, -EFSCORRUPTED,