Debugging linux kernel panic

Question

I am new to kernel debugging.Below is the last kernel message. According to my understanding it is trying to access the null pointer. But i do not understand why it is shutt

Answer 1

If your not able to reproduce the oops the only real recourse you have is to look at the objdump of the kernel and match up the CPU state dumped in the oops with the location of the variables. There used to be a guide (written by Linus himself!) in the kernel tree: Documentation/oops-tracing.txt. However it seems the Kernel User Manual now has more upto date documentation rendered from the source tree.