when I analyze the crash dump file(/proc/vmcore), crash utility show
> me this error message, What does it mean exactly?
> a bug or configuration error?
> grub.conf
> kernel /boot/vmlinuz-2.6.23 console=ttyS0,9600 root=/dev/sda2 ro quiet
> crashkernel=256M@16M
> 
> load cmd:
> /sbin/kexec -p --command-line="root=/dev/sda2 irqpoll maxcpus=1 nousb"
> --initrd=/boot/initrd.img-2.6.23 /boot/vmlinuz-2.6.23
> crash:
> 4.1.1
> box:
> Intel(R) Pentium(R) 4 CPU 3.00GHz
> 4G RAM

> At what point did it happen?

>Dave

I insert a module which would trigger a kernel crash, in this module 
I use request_irq£¨irq, myinterrupt, ...£©to register a irq on the nic, and in the function myinterrupt I 
just write something at somewhere (int *p = 00202020; *p = 10), the kernel would crash soon , but I cann't open the /proc/vmcore with crash utility after warm reboot, the error look like:  
   --> crash: invalid kernel virtual address: 5fb001 type:	"pgd page"