kernel panic at boot on any 6.x OS

Joe Auty joe at
Sun Feb 25 07:23:49 UTC 2007


(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
joe at

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