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Date: Tue, 09 Dec 2003 00:10:52 +0000
From: Robin Breathe <robin@isometry.net>
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cc: current@freebsd.org
Subject: Re: Fatal trap 12: page fault while in kernelmode(subr_turnstile.c)
 w/ trace
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 > [...]
> db> panic
> panic: from debugger
> cpuid = 0;
> Debugger("panic")
> 
> Fatal trap 3: breakpoint instruction fault while in kernel mode
> cpuid = 0; apic id = 00
> instruction pointer     = 0x8:0xc0672525
> stack pointer           = 0x10:0xdcacc714
> frame pointer           = 0x10:0xdcacc720
> code segment            = base 0x0, limit 0xfffff, type 0x1b
>                         = DPL 0, pres 1, def32 1, gran 1
> processor eflags        = IOPL = 0
> current process         = 536 (ngctl)
> Stopped at      turnstile_wait+0x86:    movl    0(%edx),%eax
> panic: from debugger
 > [...]

I forgot to point out that this second panic didn't occur in the 
previous case, without INVARIANTS. I'd be interested to know if that's 
relevant?

- Robin
-- 
Robin Breathe              robin@isometry.net              +441865741800