Can not import PyTorch together with pytorch

I have my code in python which is using pytorch library. Now I want to import another network from lua. When I load model it show an error: "Found Environment variable CUDNN_PATH = /usr/local/cuda/lib64/libcudnn.so.5*** stack smashing detected ***: python3 terminated". However if I delete import torch line, it can work normally.  Anyone can help me?