Return-path: Received: from mail-iw0-f174.google.com ([209.85.214.174]:33784 "EHLO mail-iw0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752953Ab0JGSaP (ORCPT ); Thu, 7 Oct 2010 14:30:15 -0400 Received: by iwn9 with SMTP id 9so147626iwn.19 for ; Thu, 07 Oct 2010 11:30:15 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <1286475250.20974.22.camel@jlt3.sipsolutions.net> References: <4CAB59B2.5050106@candelatech.com> <4CAB5F3D.9060201@candelatech.com> <4CAB627F.8020804@candelatech.com> <4CAB64AD.4080105@candelatech.com> <4CAB6B08.4050801@candelatech.com> <4CAE0474.4090605@candelatech.com> <1286475250.20974.22.camel@jlt3.sipsolutions.net> From: "Luis R. Rodriguez" Date: Thu, 7 Oct 2010 11:29:53 -0700 Message-ID: Subject: Re: memory clobber in rx path, maybe related to ath9k. To: Johannes Berg Cc: Ben Greear , "linux-wireless@vger.kernel.org" Content-Type: text/plain; charset=UTF-8 Sender: linux-wireless-owner@vger.kernel.org List-ID: On Thu, Oct 7, 2010 at 11:14 AM, Johannes Berg wrote: > On Thu, 2010-10-07 at 10:33 -0700, Ben Greear wrote: >> In case it helps, here is a dump of where the corrupted SKB was deleted. > > I wonder, do you have a machine with a decent IOMMU? Adding IOMMU > debugging into the mix could help you figure out if it's a DMA problem. Ben, how much traffic are you RX'ing on these virtual interfaces? Luis