# How to Write a Linux Kernel Module That Actually Builds

DevFeed: [How to Write a Linux Kernel Module That Actually Builds](<https://devfeed.tech/articles/how-to-write-a-linux-kernel-module-that-actually-builds-26900.md>)

Original publisher: [Read original article](<https://www.freecodecamp.org/news/how-to-write-a-linux-kernel-module-that-actually-builds/>)

Author: Chris Roy

Published: 2026-09-15T21:10:57Z

Content type: tutorial

Language: en

Sources: [freeCodeCamp Programming Tutorials: Python, JavaScript, Git & More](<https://devfeed.tech/sources/freecodecamp-programming-tutorials-python-javascript-git-more.md>)

Topics: [Kernel](<https://devfeed.tech/topics/kernel.md>), [Linux](<https://devfeed.tech/topics/linux.md>), [modules](<https://devfeed.tech/topics/modules.md>), [Compiler](<https://devfeed.tech/topics/compiler.md>), [Secure Boot](<https://devfeed.tech/topics/secure-boot.md>)

Tags: [compiler](<https://devfeed.tech/tags/compiler.md>), [kernel](<https://devfeed.tech/tags/kernel.md>), [linux](<https://devfeed.tech/tags/linux.md>), [linux-kernel](<https://devfeed.tech/tags/linux-kernel.md>), [module](<https://devfeed.tech/tags/module.md>), [secure-boot](<https://devfeed.tech/tags/secure-boot.md>), [tutorial](<https://devfeed.tech/tags/tutorial.md>)

## AI overview

This tutorial explains how to build and load a Linux kernel module, including the generated object files, metadata, symbols, debug information, required kernel headers and compiler setup, and common Secure Boot and kernel lockdown restrictions.

## Source excerpt

A Linux kernel module is a small piece of code that can be loaded into the running kernel without rebuilding the entire kernel. That sounds simple enough, but even a minimal module produces a surprisi