Why would I get Segmentation fault or pagefaults 0swaps errors?

[john81923]

when i run
./experiments/scripts/test.sh 1 pascal_voc vgg16 voc07_wsddn_pre
it returns :

Command terminated by signal 11 1.81user 3.24system 0:01.81elapsed 278%CPU (0avgtext+0avgdata 137680maxresident)k 1280inputs+0outputs (0major+20019minor)pagefaults 0swaps

and system stops.

when I tried demo.py
and I get this :

Segmentation fault (core dumped)

how can i fixed it.
pleas help thank you

I'm using cuda7.5 / torch-0.2.0 / Ubuntu 18.04.1 LTS (GNU/Linux 4.15.0-33-generic x86_64)
GPU: K80