, ladies and gentlemen, I want to ask a question, recently doing an experiment of CSAPP shLab, encounter a problem is this instruction can only be run on a 32-bit machine, in a 64 - bit machine will appear this error, is this why? I'm Ubuntu64 version 18.04

This is the file:
Link: https://pan.baidu.com/s/1qStGRCpJc1vJUrlgaD-HGA
The extracted code: wb5f