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Received: (from antony@localhost) by turtle.ee.ncku.edu.tw (8.7.5/8.7.3) id QAA15779 for hackers@freefall.freebsd.org; Mon, 30 Dec 1996 16:47:15 +0800 (CST)
Date: Mon, 30 Dec 1996 16:47:15 +0800 (CST)
From: Antony <antony@turtle.ee.ncku.edu.tw>
Message-Id: <199612300847.QAA15779@turtle.ee.ncku.edu.tw>
To: hackers@freefall.freebsd.org
Subject: What is Fatal trap 12 ??
Sender: owner-hackers@FreeBSD.ORG
X-Loop: FreeBSD.org
Precedence: bulk


	I enabled KTRACE, DDB, DIAGNOSTIC , and modified some source
	file of /sys/netinent/ip_input.c, and in some place, it shows

Dec 30 16:01:34 hawk /kernel: Fatal trap 12: page fault while in kernel mode
Dec 30 16:01:34 hawk /kernel: fault virtual address     = 0xf0a1a004
Dec 30 16:01:34 hawk /kernel: fault code                = supervisor read, page
not present
Dec 30 16:01:34 hawk /kernel: instruction pointer       = 0x8:0xf0a106b4
Dec 30 16:01:34 hawk /kernel: code segment              = base 0x0, limit 0xfff
f, type 0x1b
Dec 30 16:01:34 hawk /kernel:                   = DPL 0, pres 1, def32 1, gran
Dec 30 16:01:34 hawk /kernel: processor eflags  = interrupt enabled, resume, IO
L = 0
Dec 30 16:01:34 hawk /kernel: current process           = Idle
Dec 30 16:01:34 hawk /kernel: interrupt mask            =
Dec 30 16:01:34 hawk /kernel:
Dec 30 16:01:35 hawk /kernel:      

	Any idea about what the hell it is ? 


	Antony