static int __init init(void)
{
	int err;

	pdrvdata.class = class_create(THIS_MODULE, "virtio-ports");
	if (IS_ERR(pdrvdata.class)) {
		err = PTR_ERR(pdrvdata.class);
		pr_err("Error %d creating virtio-ports class\n", err);
		return err;
	}

	pdrvdata.debugfs_dir = debugfs_create_dir("virtio-ports", NULL);
	if (!pdrvdata.debugfs_dir)
		pr_warning("Error creating debugfs dir for virtio-ports\n");
	INIT_LIST_HEAD(&pdrvdata.consoles);
	INIT_LIST_HEAD(&pdrvdata.portdevs);

	err = register_virtio_driver(&virtio_console);
	if (err < 0) {
		pr_err("Error %d registering virtio driver\n", err);
		goto free;
	}
	err = register_virtio_driver(&virtio_rproc_serial);
	if (err < 0) {
		pr_err("Error %d registering virtio rproc serial driver\n",
		       err);
		goto unregister;
	}
	return 0;
unregister:
	unregister_virtio_driver(&virtio_console);
free:
	debugfs_remove_recursive(pdrvdata.debugfs_dir);
	class_destroy(pdrvdata.class);
	return err;
}

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.