1 files changed, 10 insertions, 0 deletions

diff --git a/fs/xfs/xfs_btree.c b/fs/xfs/xfs_btree.c
index 8804b8a3c310..0903960410a2 100644
--- a/fs/xfs/xfs_btree.c
+++ b/fs/xfs/xfs_btree.c
@@ -2544,7 +2544,17 @@ xfs_btree_new_iroot(
         if (error)
                 goto error0;
 
+        /*
+         * we can't just memcpy() the root in for CRC enabled btree blocks.
+         * In that case have to also ensure the blkno remains correct
+         */
         memcpy(cblock, block, xfs_btree_block_len(cur));
+        if (cur->bc_flags & XFS_BTREE_CRC_BLOCKS) {
+                if (cur->bc_flags & XFS_BTREE_LONG_PTRS)
+                        cblock->bb_u.l.bb_blkno = cpu_to_be64(cbp->b_bn);
+                else
+                        cblock->bb_u.s.bb_blkno = cpu_to_be64(cbp->b_bn);
+        }
 
         be16_add_cpu(&block->bb_level, 1);
         xfs_btree_set_numrecs(block, 1);