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Date: Wed, 21 May 1997 10:32:29 -0500
Message-Id: <9705211532.AA12211@gf006e0.seag.fingerhut.com>
From: Bruce Albrecht <Bruce.Albrecht@seag.fingerhut.com>
To: Steve Passe <smp@csn.net>
Cc: freebsd-smp@freebsd.org, bruce@zuhause.mn.org
Subject: Re: fatal trap during boot 
In-Reply-To: <199705201624.KAA02193@Ilsa.StevesCafe.com>
References: <199705201304.IAA01516@zuhause.mn.org>
	<199705201624.KAA02193@Ilsa.StevesCafe.com>
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Steve Passe writes:
 > Hi,
 > 
 > so if you want to spend the effort we need to get more info.
 > 
 > first use a completely SMP-GENERIC kernel, if possible, with options DDB added.
 > boot with the '-s' option so you don't risk the file systems.
 > when you hit the panic get a stack dump with 'trace'.
 > send us the info from the panic/trace.

I've run this with both the SMP-GENERIC (only modified to add the PS-2
mouse and DDB options), and my abbreviated SMP-GENERIC, which also
deletes all the SCSI, IDE, and network devices that I don't have on my
machine, which speeds up the boot time, and it fails in the same
place.

I only get the message
Enabled Ints 1,2,3,4,6,7,8,12,17,18, imeg: 0x00f9ee21

before it gets the fatal trap.

Fatal trap 9: general protection fault while in kernel mode
cpunumber = 0
instruction pointer = 0x8:0xf020df5e
stack pointer = 0x10:0xf43d2eac
frame pointer = 0x10:0xf43deefc
code segment = base 0x0 limit 0xfffff, type 0x13
             = DPL 0, pres 1, def32 1, gran 1
proc eflags  = int enabled resume IOPL = 0
current proc = 6 (CPUIDLE1)
int mask =
   kernel: type 9 trap, code = 0
stopped at _sccnputc+0x22 repe movsl (%esi), %es:(%edi)

the trace is
_sccnputc(cff,53,5,f43d2f28,f012730f) at sccnputc+0x22
_cnputc(53,0,0,53,f32d2f74) at _cnputc+0x42
_putchar(53,f43d2f98) at _putchar+0x97
_kvprintf(f01140dd,f0127278,a,f43d2fac) at _kvprintf+0x65
_printf(f01140dc,0,f028eff4,f01dc4db,0) at _printf+0x3d
_smp_idleloop(0) at _smp_idleloop+0x23
_fork_trampoline(0,0,0,0,0) at fork_trampoline+0x37