From owner-freebsd-stable  Sat Jul 14 10:25:27 2001
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Date: Sat, 14 Jul 2001 10:15:14 -0700
From: Julian Elischer <julian@elischer.org>
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To: Martin McFlySr <Martin@McFlySr.Kurgan.Ru>
Cc: freebsd-stable@FreeBSD.ORG, net@FreeBSD.ORG
Subject: Re: mpd, (GRE/NETGRAPH),  kernel panic, abort trap in FreeBSD 3.4
References: <1836672504.20010714144450@McFlySr.Kurgan.Ru>
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Martin McFlySr wrote:
> 
> Hello net@FreeBSD.ORG,
> 
> #uname -a
> FreeBSD 4.3-STABLE #3: Fri Jul 13 09:37:43 MSD 2001
> 
> In MyKernel i include all "options         NETGRAPH*".
> 
> After run mpd (for pptp session to other fbsd/mpd) and establish session
> 
> >----
> Jul 13 10:22:29 mpd: [vpn] CCP: state change Req-Sent --> Ack-Sent
> Jul 13 10:22:29 mpd: [vpn] IPCP: rec'd Configure Ack #2 link 0 (Ack-Sent)
> Jul 13 10:22:29 mpd: IPADDR 212.1.227.125
> Jul 13 10:22:29 mpd: COMPPROTO VJCOMP, 16 comp. channels, no comp-cid
> Jul 13 10:22:29 mpd: [vpn] IPCP: state change Ack-Sent --> Opened
> Jul 13 10:22:29 mpd: [vpn] IPCP: LayerUp
> Jul 13 10:22:29 mpd: 200.200.200.200 -> 192.168.1.1
> Jul 13 10:22:29 mpd: [vpn] IFACE: Up event
> Jul 13 10:22:29 mpd: [vpn] exec: /sbin/ifconfig ng0 200.200.200.200 192.168
> .1.1 netmask 0xffffffff -link0
> Jul 13 10:22:29 mpd: [vpn] exec: /sbin/route add 0.0.0.0 192.168.1.1
> Jul 13 10:22:29 mpd: [vpn] IFACE: Up event
> Jul 13 10:22:29 mpd:  MPPC
> Jul 13 10:22:29 mpd:    0x00000040: MPPE, 128 bit
> Jul 13 10:22:29 mpd: [vpn] CCP: state change Ack-Sent --> Opened
> u 23:34 12-Jul-2001)
> >----
> 
> and after 1...2 minutes FreeBSD got a abort trrap 12, address 0x70.
> 
> Hardware  is  Ok - last " make world " proceeded 6 hours, and mistakes have
> not arisen.
> 
> Precisely same problem is described in the letter:
> 
> >---
> Subject: mpd-3.2 makes FreeBSD 4.2R panic
> Message-ID: <Pine.SOL.4.10.10104131130310.10167-100000@callisto.rug.ac.be>
> Date: Fri, 13 Apr 2001 12:03:48 +0200 (MET DST)
> >---
> 
> but no answer was given :(
> 
> What can i fix this ?


If it is reporoducable for you, then you need to make a debug kernel
(config -g MYKERNEL)
then enable core-dumps
(dumpon /dev/ad0s1b)
then make sure that when it happens a core-dump is made and then saved at next
boot

After that you can 
cd /sys/compile/MYKERNEL
gdb -k kernel.debug /somewhere/crashdump

to get a full traceback.

(info stack)

and send that to us.. :-)

> 
> Thank you,
> 
> --
> Saturday, 14 July  2001,
> 14:03
> 
> Best regards from future,
> Martin McFlySr, HillDale.

-- 
+------------------------------------+       ______ _  __
|   __--_|\  Julian Elischer         |       \     U \/ / hard at work in 
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| (   OZ    )                                \___   ___ | country !
+- X_.---._/    presently in San Francisco       \_/   \\
          v

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