Commit 228de124 authored Mar 19, 2019 by Darrick J. Wong

xfs: dabtree scrub needs to range-check level



Make sure scrub's dabtree iterator function checks that we're not
going deeper in the stack than our cursor permits.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>

parent 6958d11f

fs/xfs/scrub/dabtree.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -574,6 +574,11 @@ xchk_da_btree(
		/* Drill another level deeper. */
		blkno = be32_to_cpu(key->before);
		level++;
		if (level >= XFS_DA_NODE_MAXDEPTH) {
		/* Too deep! */
		xchk_da_set_corrupt(&ds, level - 1);
		break;
		}
		ds.tree_level--;
		error = xchk_da_btree_block(&ds, level, blkno);
		if (error)

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