mtree_test_insert_range
ret = mtree_test_insert_range(mt, start, end, ptr);
mtree_test_insert_range(mt, 26, 1, (void *)0x35);
mtree_test_insert_range(mt, 5, 0, (void *)0xb);
mtree_test_insert_range(mt, 110, 2, (void *)0xdd);
mtree_test_insert_range(mt, 1, 2, (void *)0x3);
mtree_test_insert_range(mt, 1, 2, (void *)0x3);
mtree_test_insert_range(mt, 4, 71, (void *)0x9);
mtree_test_insert_range(mt, 11, 22, (void *)0x17);
mtree_test_insert_range(mt, 6, 7167, (void *)0xd);
mtree_test_insert_range(mt, 6, 47, (void *)0xd);
mtree_test_insert_range(mt, 1, 67, (void *)0x3);