Hi Pavel,

On Saturday 10 February 2007 03:21, Pavel Cahyna wrote:
> On Fri, Feb 09, 2007 at 02:40:24PM +0200, Mark Ter Morshuizen wrote:
> > Hi,
> >
> > My DEC3000 M600 running NetBSD 3.0 has crashed 3 times in the last week.
> > When this happens I can still access it via the debug (db>) interface on
> > the mmj port.
> > Can anyone point me in the direction of some documentation which might
> > help me diagnose this?
>
> what is the panic message displayed on the serial port before the db>
> prompt?

Thanks for the response.

Here's a selection:

8<---------------------------------------------------------------------------------------------------

mountroot: trying ffs...
root file system type: ffs
readclock: 7/2/28/16/29/45=>1172680185 (1172679826)
init: copying out path `/sbin/init' 11
setclock: 7/2/28/16/30/0
Warning: received system correctable error.

CPU 0: fatal kernel trap:

CPU 0    trap entry = 0x4 (unaligned access fault)
CPU 0    a0         = 0xfffffc000343959a
CPU 0    a1         = 0x28
CPU 0    a2         = 0x10
CPU 0    pc         = 0xfffffc00003290ac
CPU 0    ra         = 0xfffffc0000322df8
CPU 0    pv         = 0xfffffc0000328f70
CPU 0    curlwp    = 0x0

panic: trap
syncing disks...
CPU 0: fatal kernel trap:

CPU 0    trap entry = 0x4 (unaligned access fault)
CPU 0    a0         = 0xfffffc000be82892
CPU 0    a1         = 0x28
CPU 0    a2         = 0x10
CPU 0    pc         = 0xfffffc00003290ac
CPU 0    ra         = 0xfffffc0000322df8

8<---------------------------------------------------------------------------------------------------

mountroot: trying ffs...
root file system type: ffs
readclock: 7/3/6/10/46/12=>1173177972 (1173138322)
init: copying out path `/sbin/init' 11
setclock: 7/3/6/10/49/42
setclock: 7/3/6/11/26/28

CPU 0: fatal kernel trap:

CPU 0    trap entry = 0x4 (unaligned access fault)
CPU 0    a0         = 0xfffffc0001f998b2
CPU 0    a1         = 0x28
CPU 0    a2         = 0x10
CPU 0    pc         = 0xfffffc00003290ac
CPU 0    ra         = 0xfffffc0000322df8
CPU 0    pv         = 0xfffffc0000328f70
CPU 0    curlwp    = 0x0

panic: trap
syncing disks...
CPU 0: fatal kernel trap:

CPU 0    trap entry = 0x4 (unaligned access fault)
CPU 0    a0         = 0xfffffc0001f721ba
CPU 0    a1         = 0x28
CPU 0    a2         = 0x10
CPU 0    pc         = 0xfffffc00003290ac
CPU 0    ra         = 0xfffffc0000322df8
CPU 0    pv         = 0xfffffc0000328f70
CPU 0    curlwp    = 0x0

8<---------------------------------------------------------------------------------------------------

mountroot: trying ffs...
root file system type: ffs
readclock: 7/3/9/6/30/2=>1173421802 (1173391243)
init: copying out path `/sbin/init' 11
setclock: 7/3/9/6/33/34
Warning: received processor correctable error.

CPU 0: fatal kernel trap:

CPU 0    trap entry = 0x4 (unaligned access fault)
CPU 0    a0         = 0xfffffc000ab4b1d2
CPU 0    a1         = 0x28
CPU 0    a2         = 0x10
CPU 0    pc         = 0xfffffc00003290ac
CPU 0    ra         = 0xfffffc0000322df8
CPU 0    pv         = 0xfffffc0000328f70
CPU 0    curlwp    = 0x0

panic: trap
db>

> also, please generate the backtrace by a "bt" command.

db> bt
cpu_Debugger() at netbsd:cpu_Debugger+0x4
panic() at netbsd:panic+0x1f8
trap() at netbsd:trap+0x120
XentUna() at netbsd:XentUna+0x20
--- unaligned access fault (from ipl 1) ---
tcp_sack_option() at netbsd:tcp_sack_option+0x13c
tcp_dooptions() at netbsd:tcp_dooptions+0x278
tcp_input() at netbsd:tcp_input+0xa20
ip_input() at netbsd:ip_input+0xb34
ipintr() at netbsd:ipintr+0xa0
netintr() at netbsd:netintr+0xb8
softintr_dispatch() at netbsd:softintr_dispatch+0x160
exception_return() at netbsd:exception_return+0x7c
--- root of call graph ---

Sorry this took so long. I've been away on business.

Cheers,
-- 
Mark Ter Morshuizen
www.itbox.co.za
2U Rackmount Casings: http://www.rackmount.co.za