Is it feasible to unit test kernel module code ?

Question

If so what technique should I use ? I am thinking about using hippomock as they can be used to mock "C" methods. Are there any better approaches ? If so can anyone give an advice, or do you think unit test for kernel is an overkill ?

Answer 1

Since Linux kernel version 5.5 KUnit is available. It's a lightweight unit test framework for the kernel.

For more details have a look at

• https://www.kernel.org/doc/html/latest/dev-tools/kunit/index.html
• https://kunit.dev/
• https://lwn.net/Articles/780985/