static inline void vop_virtio_device_reset(struct vop_vdev *vdev)
{
	int i;

	dev_dbg(vop_dev(vdev), "%s: status %d device type %d RESET\n",
		__func__, vdev->dd->status, vdev->virtio_id);

	for (i = 0; i < vdev->dd->num_vq; i++)
		/*
		 * Avoid lockdep false positive. The + 1 is for the vop
		 * mutex which is held in the reset devices code path.
		 */
		mutex_lock_nested(&vdev->vvr[i].vr_mutex, i + 1);

	/* 0 status means "reset" */
	vdev->dd->status = 0;
	vdev->dc->vdev_reset = 0;
	vdev->dc->host_ack = 1;

	for (i = 0; i < vdev->dd->num_vq; i++) {
		struct vringh *vrh = &vdev->vvr[i].vrh;

		vdev->vvr[i].vring.info->avail_idx = 0;
		vrh->completed = 0;
		vrh->last_avail_idx = 0;
		vrh->last_used_idx = 0;
	}

	for (i = 0; i < vdev->dd->num_vq; i++)
		mutex_unlock(&vdev->vvr[i].vr_mutex);
}

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.