I assume that you have gone through Chapter 1, Kernel Workspace Setup, and have appropriately prepared a guest VM running Ubuntu 18.04 LTS (or a later stable release) and installed all the required packages. If not, I highly recommend you do this first.
Also, the last section of this chapter has you deliberately run a very memory-intensive app; so intensive that the kernel will take some drastic action! Obviously, I highly recommend you try out stuff like this on a safe, isolated system, preferably a Linux test VM (with no important data on it).
To get the most out of this book, I strongly recommend you first set up the workspace
environment, including cloning this book's GitHub repository for the code, and work on it in a hands-on fashion. The GitHub repository can be found at https://github.com/PacktPublishing/Linux-Kernel-Programming.
