
< 	entry = vm->pt_ops->pde_encode_bo(bo, map_ofs + (level - 1) * ...);
---
> 	if (map_ofs + (level - 1) * ... < (u64)map_ofs) {
> 		// handle overflow error
> 	} else {
> 		entry = vm->pt_ops->pde_encode_bo(bo, map_ofs + (level - 1) * ...);
> 	}
