static void vop_virtio_init_post(struct vop_vdev *vdev)
{
	struct mic_vqconfig *vqconfig = mic_vq_config(vdev->dd);
	struct vop_device *vpdev = vdev->vpdev;
	int i, used_size;

	for (i = 0; i < vdev->dd->num_vq; i++) {
		used_size = PAGE_ALIGN(sizeof(u16) * 3 +
				sizeof(struct vring_used_elem) *
				le16_to_cpu(vqconfig->num));
		if (!le64_to_cpu(vqconfig[i].used_address)) {
			dev_warn(vop_dev(vdev), "used_address zero??\n");
			continue;
		}
		vdev->vvr[i].vrh.vring.used =
			(void __force *)vpdev->hw_ops->ioremap(
			vpdev,
			le64_to_cpu(vqconfig[i].used_address),
			used_size);
	}

	vdev->dc->used_address_updated = 0;

	dev_info(vop_dev(vdev), "%s: device type %d LINKUP\n",
		 __func__, vdev->virtio_id);
}

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.