which tool can check variable value in a module in flight, not in crash file

[huiming cheng]

hi,
I want to debug a .ko file like gdb, to run step by step. which tool can help this ?

thanks in advance.

 

[George]

Add some printfs to the source code, and recompile?

There is a chapter in the handbook on kernel debugging.

Chapter 10. Kernel Debugging

FreeBSD Kernel Debugging

www.freebsd.org