Return-path: Received: from mail.candelatech.com ([208.74.158.172]:53121 "EHLO ns3.lanforge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756734Ab0JEVMi (ORCPT ); Tue, 5 Oct 2010 17:12:38 -0400 Message-ID: <4CAB94C5.6050602@candelatech.com> Date: Tue, 05 Oct 2010 14:12:37 -0700 From: Ben Greear MIME-Version: 1.0 To: "Luis R. Rodriguez" CC: "linux-wireless@vger.kernel.org" Subject: Re: memory clobber in rx path, maybe related to ath9k. References: <4CAB59B2.5050106@candelatech.com> <4CAB5F3D.9060201@candelatech.com> <4CAB627F.8020804@candelatech.com> <4CAB64AD.4080105@candelatech.com> <4CAB6B08.4050801@candelatech.com> In-Reply-To: <4CAB6B08.4050801@candelatech.com> Content-Type: text/plain; charset=UTF-8; format=flowed Sender: linux-wireless-owner@vger.kernel.org List-ID: On 10/05/2010 11:14 AM, Ben Greear wrote: > On 10/05/2010 10:55 AM, Luis R. Rodriguez wrote: >> On Tue, Oct 5, 2010 at 10:47 AM, Ben Greear >> wrote: > >>>> Please do, you can use the log2n approach, should take you 7 tries, >>>> each by a power of 2, start at the middle of course. >>> >>> Sure...will be a few minutes. >>> >>> If it's any sane bug, then hopefully I can hit it with a small >>> number. >>> >>> Out of curiosity, is there any particular number of STAs> 1 you guys >>> test with? >> >> We don't test this :) > > Heh, I sort of supposed so :) > > Anyway, I started with one, doubled each time, > and when I added the 4 to bring the system to > 8 STA, it crapped itself. > > I ran 64kbps UDP data streams on pairs of STA interfaces > for 5 minutes between STA increments. I didn't get a chance to > start any traffic for the 4 that I had just added. > > Earlier, I wasn't running any traffic at all, but of course > there is still noise on the network. > > Note I'm running 'iwconfig foo' and 'cat /proc/net/wireless' in > the background as well, and that may have something to do with > things. I tried with the wmb() patch, and the problem still exists, so it must be something else. Thanks, Ben -- Ben Greear Candela Technologies Inc http://www.candelatech.com