Kernel debugging question

[Greg 'groggy' Lehey]

On Monday, 19 April 2004 at 12:56:56 +0200, Jorn Argelo wrote:
> [snip]
>
>>
>>> I did enable the rest though. This is the output of the debugging,
>>
>> What is the output of the "debugging"?  Your message contained only
>> the panic message and the gdb prompt:
>
> I used the gdb -k /boot/kernel/kernel.debug /home/jorn/dump/vmcore.0 command,
> and the output with the previous mail was the output of that command. A
> small, perhaps irrelevant sidenote, is that the kernel.debug file was only
> located in the /usr/obj/usr/src/sys/KERNCONF, and not in /boot/kernel as
> described in the documentation of FreeBSD.

The location of the file isn't important, but it must be the same
kernel which caused the dump.

>>> #0  doadump () at /usr/src/sys/kern/kern_shutdown.c:240
>>> (kgdb)
>
>> You want at least a backtrace.
>
> How do I do that? I'm sorry, but I've never done a kernel debug or
> anything.

That's why I pointed you to the documentation explaining what to do:

On Mon, 19 Apr 2004 08:18:37 +0930, Greg 'groggy' Lehey wrote:
> You might take a look at
> http://www.lemis.com/papers/Taiwan/tutorial.pdf, which is a little
> more up to date.  Note, though, that it's still a draft.  If you see
> any mistakes, please contact me.

Greg
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