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From: "Thomas D. Dean" <tomdean@speakeasy.org>
To: grog@lemis.com
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In-reply-to: <20010103153459.J4336@wantadilla.lemis.com> (message from Greg
	Lehey on Wed, 3 Jan 2001 15:34:59 +1030)
Subject: Re: Fatal trap while printing under SMP
References: <5.0.2.1.2.20010102204401.00b13e88@pozo.com> <20010103153459.J4336@wantadilla.lemis.com>
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Here is what I saw on 12/24.  This is with DDB and KTRACE.  I added
  options   WITNESS
  options   INVARIANT_SUPPORT
  options   INVARIANTS

but gained no futher information.

Fatal Trap 12: page fault while in kernel mode
cpuid=0; lapic.id=00000000
fault virtual address = 0x18c7a2bb
fault code            = 0x8:0xc6bb0ca0
stack pointer         = 0x10:0xc7aa1f84
frame pointer         = 0x10:0xc7aa1f9c
code segment          = base 0x0, limit 0xfffff, type 0x1b
                      = DPL 0, pres 1, def32 1, gran 1
processor flags = interrupt enabled, resume, IOPL=0
current process = 416 (irq7, lpt0)
kernel: type 12 trap, code=0
cpu0 stopping CPUs: 0x00000002... stopped
stopped at 0xc6bb0ca0: movb 0x18c7a22b, %al

db> trace
_end(0) at 0xc6bb0ca0
fork_trampoline() at fork_trampoline+0x45

tomdean


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