Panic on FreeBSD 6.0BETA1

[Kris Kennaway]

On Wed, Aug 03, 2005 at 08:47:43AM -0400, Derrick Edwards wrote:
> ???Hi all,
> I decided to try and help with testing 6-BETA1, after updating sources and 
> recompiling i get the following during boot up. I am tried booting without 
> hyperthreading enabled in the bios and I still get the same panic.
> 
> Fatal trap 12: page fault while in kernel mode
> cpuid = 0; apic id =00
> fault virtual address = 0x480008
> fault code = supervisor read, page not present
> instruction pointer = 0x20:0xc06923cc
> stack pointer = 0x28:0xc10208ec
> 
> Code segment = base 0x0, limit 0xfffff, type 0x1b
> ? ? ? ? ? ? ?= DPL 0, pres 1, def32 1, gran 1
> 
> processor eflags = interrupt enabled, resyne, IOPL = 0
> current process = 0 (swapper)
> [thread pid 0tid0]
> Stopped at strlen+0x8: cmpb $0,0(%edx)
> 
> I left all the debugging features in the current however, I am not sure 
> exactly how to trace this problem. If someone could point me to any doc that 
> would allow to provide more information that would ?be great. I updated my 
> pen 400MHZ using the same procedures and all went well. Please help

See the chapter on kernel debugging in the developers handbook.

Kris

P.S. I need to make a macro to type the answer to this FAQ. 

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