From owner-freebsd-questions  Wed Nov 24  2:40:22 1999
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To: Stuart Henderson <stuart@hyperion.eclipse.net.uk>
Cc: FreeBSD Questions <freebsd-questions@freebsd.org>
Subject: Re: trap 12 in fxp_add_rfabuf 
In-reply-to: Your message of "Wed, 24 Nov 1999 00:25:05 GMT."
             <19991124002505.A29974@proteus.eclipse.net.uk> 
From: David Greenman <dg@root.com>
Reply-To: dg@root.com
Date: Tue, 23 Nov 1999 19:11:26 -0800
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   Is it possible that the HP machine uses an Intel N440BX motherboard inside?
This is a known problem with that.

-DG

David Greenman
Co-founder/Principal Architect, The FreeBSD Project - http://www.freebsd.org
Creator of high-performance Internet servers - http://www.terasolutions.com
Pave the road of life with opportunities.

>I have a squid cache running on 3.3-release. Hardware is a 256mb HP 
>Netserver LPr with an HP network card (it's an Intel chipset, fxp driver).
>SCSI is 895 using ncr0 on this box. I have been running a number of 
>similar boxes in various functions for some time with little trouble.
>
>Today I was greeted with a trap 12. Unfortunately no single swap device
>has enough space to hold a crash dump as they are interleaved.
>
>The kernel is recompiled with maxusers 256 and unnecessary drivers
>disabled, so the instruction pointer is of limited interest. It is given
>below. In case the offset relative to the start of add_rfabuf helps:
>
>23:49> ~:maia# nm /kernel|grep ^c01b6[7-b]|sort
>c01b67a4 t fxp_mediachange
>c01b67d4 t fxp_mediastatus
>c01b6910 t fxp_add_rfabuf
>c01b6b30 t fxp_mdi_read
>c01b6b9c t fxp_mdi_write
>
>Apologies for the truncated additional information, the box had to
>be reinstated quickly, so my notes were rather hurried:
>
>ip 08:c01b69e0   base 0x0  lint ffff  type 1b
>sp 10:c0257988   dpl 0  pres 1  def32 1  gran 1
>fp 10:c0257998   int ena, res, iopl=0
>                 ints net/tty/bio/cam
>
>The Ethernet driver reports the device as being the following:
>fxp0: <Intel EtherExpress Pro 10/100B Ethernet> rev 0x05 int a irq 11 on pci1.3.0
>
>Bearing in mind my experience in debugging is rather limited, please 
>let me know if I can supply any additional information or do anything 
>should this recur that would help to trace the source of the panic. 
>
>Stuart
>
>
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