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Date:      Fri, 12 Nov 1999 16:23:36 +0000
From:      Roger Hardiman <roger@cs.strath.ac.uk>
To:        wpaul@freebsd.org
Cc:        stable@freebsd.org
Subject:   3.3-stable kernel panics
Message-ID:  <382C3F08.15FB@cs.strath.ac.uk>

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Hi Bill, CC to -stable

I have a PC with an onboard realtek 8139 network card.
It all worked great with 3.3-RELEASE but today
I CVSuped and made world, and now the machine
hangs and panics frequently.

I can hang the machine just by ftping files from another site.
I can panic the machine by using the ttcp network bandwidth
tool in one screen, and running 'netstat 1' in another screen.

When the panic happens, the kernel trace is
  small_i586_bcopy
  ip_input
  ipintr
  swi_net_next


I took another machine running 3.3-stable (CVSup about a week
ago). I removed its 10 Meg 3COM network card and added a
RealTek 8139 card. It then had the same behavious - hanging
whenever I started streaming any data over the network.

I replaced the network card with a Linksys v2 card (using the
MX driver) and the machine works correctly.



So, I assumed the recent RealTek driver commit to -stable was
at fault.

However, I reverted if_rl.c and if_rlreg.h back to the
old 3.3-Release versions and the panics still happen.

So I assume the problem is elsewhere in the kernel, 
perhaps in the general IP code (netinet) or in the memory
management (as it was a i586_bcopy which failed)

Any ideas?
Roger
-- 
Roger Hardiman        | Telepresence Research Group
roger@cs.strath.ac.uk | DMEM, University of Strathclyde
tel: 0141 548 2897    | Glasgow, Scotland, G1 1XJ, UK
fax: 0141 552 0557    | http://www.telepresence.strath.ac.uk


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