Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756811AbcDGPxY (ORCPT ); Thu, 7 Apr 2016 11:53:24 -0400 Received: from mail-lf0-f65.google.com ([209.85.215.65]:36740 "EHLO mail-lf0-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756074AbcDGPxW (ORCPT ); Thu, 7 Apr 2016 11:53:22 -0400 MIME-Version: 1.0 In-Reply-To: References: <570597EA.3040902@ti.com> <57067089.4080406@ti.com> From: Willem de Bruijn Date: Thu, 7 Apr 2016 11:52:40 -0400 Message-ID: Subject: Re: Boot failure when using NFS on OMAP based evms To: Willem de Bruijn Cc: "Franklin S Cooper Jr." , Sam Kumar , Eric Dumazet , Tony Lindgren , mugunthanvnm@ti.com, Network Development , LKML , David Miller , Alexey Kuznetsov , jmorris@namei.org, yoshfuji@linux-ipv6.org, Patrick McHardy , nsekhar@ti.com, linux-omap@vger.kernel.org Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 957 Lines: 19 >>>> Currently linux-next is failing to boot via NFS on my AM335x GP evm, >>>> AM437x GP evm and Beagle X15. I bisected the problem down to the commit >>>> "udp: remove headers from UDP packets before queueing". >>> >>> Thanks for the report, and apologies for breaking your configuration. >>> I had missed that sunrpc can dequeue skbs from a udp receive >>> queue and makes assumptions about the layout of those packets. rxrpc >>> does the same. From what I can tell so far, those are the only two >>> protocols that do this. I have verified that the following fixes rxrpc for me >>> >> >> Thank you for your quick response. I verified with all of the above >> suggested changes that NFS works again on my 3 evms. > > Thanks a lot for testing, Franklin. I will send out the two patches. Patches sent to netdev. I'll do another scan to verify that there are no additional protocols that dequeue skbs from udp receive queues and expect udp headers present.