From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ian Campbell Subject: Re: skb->frag_list != NULL in start_xmit for device without NETIF_F_FRAGLIST Date: Wed, 2 Mar 2011 13:14:43 +0000 Message-ID: <1299071683.17907.1764.camel@zakaz.uk.xensource.com> References: <1298980019.5034.2238.camel@zakaz.uk.xensource.com> <1299071546.17907.1755.camel@zakaz.uk.xensource.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Cc: "netdev@vger.kernel.org" , Paul Durrant To: Jesse Gross Return-path: Received: from smtp.citrix.com ([66.165.176.89]:16177 "EHLO SMTP.CITRIX.COM" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750956Ab1CBNOp (ORCPT ); Wed, 2 Mar 2011 08:14:45 -0500 In-Reply-To: <1299071546.17907.1755.camel@zakaz.uk.xensource.com> Sender: netdev-owner@vger.kernel.org List-ID: On Wed, 2011-03-02 at 13:12 +0000, Ian Campbell wrote: > > > I believe that not much has changed in this regard between 2.6.32 > and net-next. > > It turns out I cannot reproduce with either 2.6.32 (pvops xen.git) or > a more recent ((26.38-rc) kernel. The kernel where we see this is the > XCP kernel which is a 2.6.32 based thing derived from SLES11SP1 + XCP > specific updates. Paul reminded me that his XCP system where we see this is running openvswitch not bridging (all my own tests were with bridging), is this something which could be caused by vswitch at all? I don't see any interesting ->frag_list usage in openvswitch.git. Anyway I'm going to see if I can repro with vswitch. Ian.