
< 	if (rt->rt_uses_gateway && rt->rt_gw_family != AF_INET)
< 		goto out;
---
> 	if (rt == NULL || IS_ERR(rt))
> 	{
> 		return -EINVAL;
> 	}
> 	if (rt->rt_uses_gateway && rt->rt_gw_family != AF_INET)
> 		goto out;
