Return-Path: Received: from down.free-electrons.com ([37.187.137.238]:33976 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751960AbbIPHP1 convert rfc822-to-8bit (ORCPT ); Wed, 16 Sep 2015 03:15:27 -0400 From: Gregory CLEMENT To: Damien =?utf-8?Q?Th=C3=A9bault?= Cc: "linux\@arm.linux.org.uk" , "netdev\@vger.kernel.org" , "linux-nfs\@vger.kernel.org" , "trond.myklebust\@primarydata.com" , "anna.schumaker\@netapp.com" , "linux-arm-kernel\@lists.infradead.org" Subject: Re: NFS/TCP/IPv6 acting strangely in 4.2 References: <20150911113839.GO21084@n2100.arm.linux.org.uk> <1442386435.3756.282.camel@vitec.com> Date: Wed, 16 Sep 2015 09:15:24 +0200 In-Reply-To: <1442386435.3756.282.camel@vitec.com> ("Damien =?utf-8?Q?Th?= =?utf-8?Q?=C3=A9bault=22's?= message of "Wed, 16 Sep 2015 06:53:57 +0000") Message-ID: <87zj0mbzsj.fsf@free-electrons.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Sender: linux-nfs-owner@vger.kernel.org List-ID: Hi Damien, On mer., sept. 16 2015, Damien Thébault wrote: > On Fri, 2015-09-11 at 12:38 +0100, Russell King - ARM Linux wrote: >> I have a recent Marvell Armada 388 board here which uses the mvneta >> driver. I'm seeing some weird effects with NFS with it acting as a >> client. > > Hello, > > I'm upgrading a Marvelle Armada 370 board using the mvneta driver from > 4.0 to 4.2 and noticed issues with NFS booting. > Basically, most of the time init returns with an error code, or > programs segfault or throw illegal instructions. > > Since it worked fine on 4.0 I bisected until I found commit > a84e32894191cfcbffa54180d78d7d4654d56c20 "net: mvneta: fix refilling > for Rx DMA buffers". > > If I revert this commit, everything seems to get back to normal. > Could you try it ? The two issues look very similar. Actually there was a bug with this commit, but a fix had been submitted and accepted yesterday, you can find him here: https://patchwork.ozlabs.org/patch/518111/. Thanks, Gregory > > Regards -- Gregory Clement, Free Electrons Kernel, drivers, real-time and embedded Linux development, consulting, training and support. http://free-electrons.com