From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ben Greear Subject: Re: 3.9.5+: Crash in tcp_input.c:4810. Date: Mon, 08 Jul 2013 11:30:37 -0700 Message-ID: <51DB054D.6060507@candelatech.com> References: <51BF50B3.1080403@candelatech.com> <1371493059.3252.200.camel@edumazet-glaptop> <51D1C620.8030007@candelatech.com> <1372813467.4979.46.camel@edumazet-glaptop> <51D398C0.5060802@candelatech.com> <1372826512.4979.49.camel@edumazet-glaptop> <51D3AD66.8030506@candelatech.com> <1372827749.4979.52.camel@edumazet-glaptop> <51DAF5A7.60505@candelatech.com> <1373307702.4979.116.camel@edumazet-glaptop> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Cc: netdev To: Eric Dumazet Return-path: Received: from mail.candelatech.com ([208.74.158.172]:47602 "EHLO ns3.lanforge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751975Ab3GHSaj (ORCPT ); Mon, 8 Jul 2013 14:30:39 -0400 In-Reply-To: <1373307702.4979.116.camel@edumazet-glaptop> Sender: netdev-owner@vger.kernel.org List-ID: On 07/08/2013 11:21 AM, Eric Dumazet wrote: > On Mon, 2013-07-08 at 10:23 -0700, Ben Greear wrote: > >> We ran a 5+ day test using un-modified 3.10 kernel and did not trigger >> the bug. > > Using wired ethernet only, or any kind of adapters, including ath9k ? Exact same hardware and configuration: ath9k, around 240 wifi stations trying to connect to APs that can handle a bit less than 240 total, starting TCP traffic when stations are connected. It appears that the constant churn of stations going up and down is key, but of course that is par for the course, especially in the wifi stack. Some of our local wifi patches make the system work considerably faster when we have hundreds of wifi stations, so timing will be different on upstream kernels, and of course we could have bugs :) Thanks, Ben -- Ben Greear Candela Technologies Inc http://www.candelatech.com