Kernel panic; fatal trap 12; on task 22, USB0: was Re: Moused issues?

Joe Altman fj at
Sun Oct 7 16:42:09 PDT 2007

On Sun, Oct 07, 2007 at 11:01:41AM +0200, Hans Petter Selasky wrote:
> On Saturday 06 October 2007, Joe Altman wrote:
> >
> Hi,
> Do you have "options KDB" in your kernel config file ?

Following your suggestion, I did try this; and there was no
change from kernel panic and reboot.

> You should get a prompt when it panics.

There was no prompt.

> Then you type in "bt" for backtrace. 
> Maybe you could take a picture of that. 

Personally, it's a bit embarassing to be so helpless that I am forced
to take a picture. I suppose if I could be certain about how to
compile bootblocks, I might be able to do something on the serial
console with a laptop.

But the one time I attempted that was a disaster. 

Is my speculation about the " dump device found..." correct? Is
it that swapon and multiuser has not occurred, and so there can occur
no dump to the swap space?

> Probably someone is accessing a NULL pointer.

If any more damage occurs, ISTM that my entire installation will be
accessing a NULL pointer; the following message is from the most
recent dmesg, and is new:

warning: KLD '/boot/kernel.old.bootable/drm.ko' is newer than the
linker.hints file

Since my hardware appears to not work with the available source, who
knows how that will go?

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