Re: Fatal trap 12: page fault while in kernel mode.

[walt <wa1ter@xxxxxxxxxxxxx>]

Sascha Wildner wrote:
> walt wrote:
>
> > The same bug I described in my post two days ago 'Newbie kernel-debugger
> > question'.  May I ask how you got the backtrace into your email -- did 
> > you
> > transcribe it by hand, or use some better method?
>
>
> walt,
>
> the best method would probably be to put a
>
> dumpdev="/dev/ad0s1b"
>
> statement into your /etc/rc.conf (see rc.conf(5)) to enable crash dumps. 
> The actual partition might differ in your configuration. When your 
> system panics it will save a crash dump. After reboot you'll find the 
> dump in /var/crash which. You can then debug it using gdb and just copy 
> and paste the data into your mail.
>
> This is all described in Lehey's paper (chapter 6, page 43) to which I 
> referred in reply to your post two days ago.

I was only up to page 37 and struggling with serial debugging, so I'm
glad you pointed out an easier way, thanks.