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From: John Baldwin <jhb@freebsd.org>
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	(bigwig.baldwin.cx); Mon, 01 Oct 2012 08:58:23 -0400 (EDT)
Cc: Randy Bush <randy@psg.com>
Subject: Re: atkbd attach excitement during boot
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On Sunday, September 30, 2012 1:16:23 pm Randy Bush wrote:
> booting 
> 
> FreeBSD fbsd64.psg.com 9.1-PRERELEASE FreeBSD 9.1-PRERELEASE #0 r241020: Fri 
Sep 28 07:14:15 UTC 2012     
root@kaos.glenbarber.us:/usr/obj/usr/src/sys/GENERIC  amd64
> 
> if i do not type a key during boot (after typing <cr> to beastie), i get
> the following
> 
> Fatal trap 12: page fault while in kernel mode
> cpuid = 0; apic id = 00
> fault virtual address   = 0x38
> fault code              = supervisor read data, page not present
> instruction pointer     = 0x20:0xffffffff80704740
> stack pointer           = 0x28:0xffffffff815336e0
> frame pointer           = 0x28:0xffffffff81533730
> code segment            = base 0x0, limit 0xfffff, type 0x1b
>                         = DPL 0, pres 1, long 1, def32 0, gran 1
> processor eflags        = interrupt enabled, resume, IOPL = 0
> current process         = 0 (swapper)
> trap number             = 12
> panic: page fault
> cpuid = 0
> KDB: stack backtrace:
> #0 0xffffffff809221d6 at kdb_backtrace+0x66
> #1 0xffffffff808ec40e at panic+0x1ce
> #2 0xffffffff80bd91a0 at trap_fatal+0x290
> #3 0xffffffff80bd94d8 at trap_pfault+0x1e8
> #4 0xffffffff80bd9ade at trap+0x3be
> #5 0xffffffff80bc33ff at calltrap+0x8
> #6 0xffffffff80be95fb at atkbd_intr+0xab

Can you run 'gdb /boot/kernel/kernel' and do 'l *atkbd_intr+0xab'?

> #7 0xffffffff80be9dd6 at atkbd_timeout+0x96
> #8 0xffffffff80be9e94 at atkbd_attach_unit+0xb4
> #9 0xffffffff80bea0c8 at atkbdattach+0x78

-- 
John Baldwin