Debugging Linux Kernel in Deep – Part 2 | Udemy

What you’ll learn
Debugging Linux Kernel Using KGDB
KGDB on Raspberry Pi3

User space processes can be debugged using gdb. With gdb you can

single-step,

stop,

resume,

put break-points,

inspect memory and variables,

look through call stack information

What if we can use gdb on running Linux Kernel.

Problem:

How can a gdb debug running kernel as it is just a user space process.

Solution:

Client/Server Architecture

User space programs can be debugged remotely using the combination of gdbserver on the target machine and gdb on the host machine/development machine.

The Linux kernel has a GDB Server implementation called KGDB. It communicates with a GDB client over network or serial port connection

In this course we will learn:

How to setup KGDB

Various ways of getting the target into development machine

Setting Breakpoints

Printing and Setting Variables

Using a single serial port for both kgdb and console messages

Getting the kernel messages in gdb window

Debugging Linux Kernel Modules (In-Tree, out of tree)

Use of GDB Scripts present in the Linux Kernel

Who this course is for:
Kernel developers interested to learn various debugging techniques

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