Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754234Ab1EDSfY (ORCPT ); Wed, 4 May 2011 14:35:24 -0400 Received: from oproxy6-pub.bluehost.com ([67.222.54.6]:51213 "HELO oproxy6-pub.bluehost.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1751878Ab1EDSfX (ORCPT ); Wed, 4 May 2011 14:35:23 -0400 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=default; d=xenotime.net; h=Received:Date:From:To:Cc:Subject:Message-Id:In-Reply-To:References:Organization:X-Mailer:Mime-Version:Content-Type:Content-Transfer-Encoding:X-Identified-User; b=UMAUXYAlcHee+FtYD8szsiiumEHI23TKKa8FwkYKu2oQjxiYpGvwOehoOo4eTO2g+kWwlWjs7BGQXdttqHfUG9xfxXAdn7qkrlM6OaE4LtXFrXZ1ML8s530B9hY9FGSz; Date: Wed, 4 May 2011 11:35:21 -0700 From: Randy Dunlap To: Stephen Hemminger Cc: TB , netdev , linux-kernel@vger.kernel.org Subject: Re: Divide error in bictcp_cong_avoid ? Message-Id: <20110504113521.3c506a54.rdunlap@xenotime.net> In-Reply-To: <20110504113351.4643a0c9@nehalam> References: <4DC178D3.6030308@techboom.com> <20110504104940.cd0d9e9a.rdunlap@xenotime.net> <20110504113351.4643a0c9@nehalam> Organization: YPO4 X-Mailer: Sylpheed 2.7.1 (GTK+ 2.16.6; x86_64-unknown-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Identified-User: {1807:box742.bluehost.com:xenotime:xenotime.net} {sentby:smtp auth 50.53.38.135 authed with rdunlap@xenotime.net} Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1395 Lines: 46 On Wed, 4 May 2011 11:33:51 -0700 Stephen Hemminger wrote: > On Wed, 4 May 2011 10:49:40 -0700 > Randy Dunlap wrote: > > > [add cc to netdev] > > > > > > On Wed, 04 May 2011 12:03:31 -0400 TB wrote: > > > > > We're having this issue sporadically on a few servers and this is the > > > backtrace we get from netconsole. > > > > > > > > > [28522.642419] divide error: 0000 [#1] SMP > > > [28522.642457] last sysfs file: > > > /sys/devices/pci0000:00/0000:00:1f.2/host2/target2:0:0/2:0:0:0/vendor > > > [28522.642504] CPU 0 > > > [28522.642511] Modules linked in: > > > i2c_i801 > > > i2c_core > > > evdev > > > button > > > [28522.642570] > > > [28522.642590] Pid: 0, comm: swapper Not tainted 2.6.38.5 #6 <<<<<<<<<<<<<< > > > > > > Supermicro X8DTH-i/6/iF/6F > > > / > > > X8DTH > > > > > What kernel version? I suspect they are running something really old > kernel like RHEL 5 since BIC has not been the default congestion control for > several years. Please see about 6 lines above.... at the "<<<<<<<<<<<". --- ~Randy *** Remember to use Documentation/SubmitChecklist when testing your code *** -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/