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From: "John S. Dyson" <toor@dyson.iquest.net>
Message-Id: <199708292251.RAA03163@dyson.iquest.net>
Subject: Re: Fatal trap 12 during boot with -current
In-Reply-To: <199708292221.QAA09169@Ilsa.StevesCafe.com> from Steve Passe at "Aug 29, 97 04:21:32 pm"
To: smp@csn.net (Steve Passe)
Date: Fri, 29 Aug 1997 17:51:56 -0500 (EST)
Cc: ume@calm.imasy.or.jp, current@FreeBSD.ORG, smp@FreeBSD.ORG
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Steve Passe said:
> Hi,
> 
> ---
> > The very recent -current kernel causes fatal trap 12 during boot.
> > 
> > 			. . . 
> > 	Starting final network daemons: moused
> 
> probably what kills it.  is this an lkm?  try booting without moused.
> 
> ---
> > 
> > 	Fatal trap 12: page fault while in kernel mode
> > 	cpuid = 1
> > 	lapic.id = 16777216
>         ^^^^^^^^^^^^^^^^^^^
> 
> this is totally bogus
> 
> > 	fault virtual address	= 0xeffd6dac
> > 	fault code		= super visor read, page not present
> > 	instruction pointer	= 0x8:0xf019eb23
> > 	stack pointer		= 0x10:0xff803e0c
> > 	frame pointer		= 0x10:0xff803e2c
> > 	code segment		= base 0x0, limit 0xfffff, type 0x16
> > 				= DPL 0, pres 1, def32 1, gran 1
> > 	processor eflags	= interrupt enabled, resume, IOPL = 0
> > 	current process		= Idle
> > 	mp_lock			= 01000003
> > 	interrupt mask		=  <- SMP: XXX
> > 	kernel: type 12 trap, code=0
> > 
> > 	CPU1 stopping CPUs: 0x00000001
> > 	 stopped
> > 	Stopped at	_pmap_enter+0xb3:	movl	0(%ecx),%ecx
> > 	db>
> 
> is this repeatable?
> 
> we need a 'trace' when it stops, and probably a 'show registers'
> 
As a wild guess, try 'options "DISABLE_PSE"'.


-- 
John
dyson@freebsd.org
jdyson@nc.com