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Date:      Sun, 18 Mar 2001 22:28:37 -0500
From:      Brent Voltz <bvoltz@itsco.com>
To:        "'freebsd-net@freebsd.org'" <freebsd-net@freebsd.org>
Subject:   Kernel panic with  MPD PPTP
Message-ID:  <41E533716110D511BF0300805FCC206001332B@happy.itsco.com>

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Hi,

I have an ADSL line that uses PPPoE encapsulation.  I've been trying to get
a PPTP connection working with FreeBSD 4.2 release on the same box that
connects to the ADSL.

The process is as follows:

1) Bring up PPPoE connection, using either user-space PPP or MPD.  This part
works flawlessly using either method.

2) Bring up PPTP connection using MPD.

The result is always the same: Kernel panic in the next 30 seconds.

============

Fatal trap 12: page fault while in kernel mode
fault virtual address = 0x70
fault code = supervisor read, page not present
instruction pointer = 0x8:0xc01a7dd0
stack pointer = 0x10:0xc0388328
frame pointer = 0x10:0xc038834c
code segment = base 0x0, limit 0xfffff, type 0x1b
             = dpl 0, pres 1, def32 1, gran 1
processor eflags = interrupt enabled, resume, iopl = 0
current process = idle
interrupt mask = net tty bio cam
trap number 12
panic: page fault

============

Can anyone help?  I would be willing to help with debugging this, but I'm
not a kernel hacker, and I really don't know where to start.  I have log
files, etc, but I didn't want to post that much stuff here.

Brent Voltz
Integrated Technical Services
www.itsco.com

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