kernel panic at boot on any 6.x OS

[Kip Macy]

It looks as if you've hit a device driver that is trying to print out
a null string. The message you've given doesn't provide any more
information than that. If you install a snapshot kernel it will
probably have ddb compiled in which will allow you to at least get a
backtrace. I'm sorry you're having trouble.

 -Kip




On 2/24/07, Joe Auty <joe at netmusician.org> wrote:
> Hello,
>
> (sorry, don't know whether kernel problems should go to questions or
> hackers, or both)..
>
> This has been a long-standing problem of mine, but I always ignored
> it hoping it would go away on its own with a future 6.x release, but
> it remains...
>
> No matter whether I boot into safe mode or regular mode, with all
> kernel extensions disabled in /boot/loader.conf, I get the following
> panic late at boot of a fresh RELENG_6_2 kernel (with only a few
> services left to bring up). The 6.x kernels I've tried all build and
> installed cleanly without any errors...
>
>
> > WARNING: Device driver "
> >
> > Fatal trap 12: page fault while in kernel mode
> > fault virtual address = 0x400000
> > fault code = supervisor read, page not present
> > instruction pointer = 0x20:0xc06d4614
> > stack pointer = 0x28:0xf015491c
> > frame pointer = 0x28:0xf015491c
> > code segment = base 0x0, limit 0xffffff, type 0x1b
> >            = DPL 0, pres 1, def32 1, gran 1
> > processor eflags = interupt enabled, resume, IOPL = 0
> > current process = 898 (kldload)
> > trap number = 12
> > panic: page fault
> > uptime: 36s
> > cannot dump. No dump device defined
> > automatic reboot in 15 seconds
>
>
> This problem does not occur within any 5.x OS for me. I would
> certainly like to resolve this issue now, but this sort of debugging
> is over my head beyond running fsck (which I've tried). Any ideas here?
>
> Thanks in advance for your help!
>
>
>
>
>
> -----------
> Joe Auty
> NetMusician: web publishing software for musicians
> http://www.netmusician.org
> joe at netmusician.org
>
>
>
>