static int __init qeth_core_init(void)
{
	int rc;

	pr_info("loading core functions\n");
	INIT_LIST_HEAD(&qeth_core_card_list.list);
	INIT_LIST_HEAD(&qeth_dbf_list);
	rwlock_init(&qeth_core_card_list.rwlock);
	mutex_init(&qeth_mod_mutex);

	qeth_wq = create_singlethread_workqueue("qeth_wq");

	rc = qeth_register_dbf_views();
	if (rc)
		goto out_err;
	qeth_core_root_dev = root_device_register("qeth");
	rc = PTR_RET(qeth_core_root_dev);
	if (rc)
		goto register_err;
	qeth_core_header_cache = kmem_cache_create("qeth_hdr",
			sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
	if (!qeth_core_header_cache) {
		rc = -ENOMEM;
		goto slab_err;
	}
	qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
			sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
	if (!qeth_qdio_outbuf_cache) {
		rc = -ENOMEM;
		goto cqslab_err;
	}
	rc = ccw_driver_register(&qeth_ccw_driver);
	if (rc)
		goto ccw_err;
	qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups;
	rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
	if (rc)
		goto ccwgroup_err;

	return 0;

ccwgroup_err:
	ccw_driver_unregister(&qeth_ccw_driver);
ccw_err:
	kmem_cache_destroy(qeth_qdio_outbuf_cache);
cqslab_err:
	kmem_cache_destroy(qeth_core_header_cache);
slab_err:
	root_device_unregister(qeth_core_root_dev);
register_err:
	qeth_unregister_dbf_views();
out_err:
	pr_err("Initializing the qeth device driver failed\n");
	return rc;
}

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.