First, Introduction
The Linux kernel Debugger (KDB) allows you to debug the Linux kernel. This well-known tool is essentially a patch of kernel code that allows a master to access kernel memory and data structures. One of the main advantages of KDB is that it does not need to be debugged with another machine: You can debug a running kernel. In this article, we'll start with information about downloading the KDB patch, patching, (re) compiling the kernel, and starting KDB. Then we'll look at the KDB command and look at some of the more common commands. Finally, we'll look at some details about settings and display options.
Second, installation configuration
http://blog.sina.com.cn/s/blog_4ba5b45e0102e4rl.html
Fix EHCI compilation Problem patches
http://oss.sgi.com/pipermail/kdb/2009-december/002074.html
Third, examples
http://blog.chinaunix.net/uid-12076195-id-229352.html
Linux KDB Command