From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030185AbWBYGik (ORCPT ); Sat, 25 Feb 2006 01:38:40 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1030187AbWBYGik (ORCPT ); Sat, 25 Feb 2006 01:38:40 -0500 Received: from i-216-58-89-227.gta.igs.net ([216.58.89.227]:640 "EHLO mail.undead.cc") by vger.kernel.org with ESMTP id S1030185AbWBYGij (ORCPT ); Sat, 25 Feb 2006 01:38:39 -0500 X-AuthUser: john@undead.cc Message-ID: <43FFFB6B.7090700@undead.cc> Date: Sat, 25 Feb 2006 01:38:35 -0500 From: John Zielinski User-Agent: Thunderbird 1.5 (Windows/20051201) MIME-Version: 1.0 To: linux-kernel@vger.kernel.org Subject: VIA Velocity massive memory corruption with jumbo frames Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org I just bought a stack of Via Velocity network cards to upgrade my network. I also purchased a Netgear GS-108 Gigabit switch which has supports for jumbo frames. When I tried increasing the MTU to 9000 I started getting massive memory corruption. Some of the symptoms were: programs failing to load, random oopses, VT freezes, machine freezes, filesystem corruption, etc. It only happened when the machine was receiving network traffic. The RX count would not advance either for that interface. I tried on another machine and got the same thing. I even set up a fresh install of Linux with the latest kernel on a test box and got the same. Dual booting to Windows on that box works perfect with jumbo frames as well as the other two Windows machines on the network with the same type of card. I tried three Linux boxes with the same results. Each box has different hardware and configurations. The original machine I tried it on is a dual P3-833 machine running 2.6.10 while the test box is a Celeron 800 with a clean install of 2.6.15.4. I also tried an MTU of 3000 instead of 9000 and got the same thing. Anyone know what I should try next?