[Crash-utility] How to work with crash utility.

Hello all, I am new to this crash utility and have installed crash-5.1.1 on fedora11. Actually i searched a lot on net but i am unable to understand that. I tried many thing but it failed. I have written a module and it is giving oops after mke2fs and wann to use crash utility to solve this problem. Will anyone guide from basic steps how to use crash. Please help me out. Regards, Nishant.