Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752806AbaF3NAq (ORCPT ); Mon, 30 Jun 2014 09:00:46 -0400 Received: from relay1.mentorg.com ([192.94.38.131]:46706 "EHLO relay1.mentorg.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750759AbaF3NAp (ORCPT ); Mon, 30 Jun 2014 09:00:45 -0400 Message-ID: <53B15F78.4000208@mentor.com> Date: Mon, 30 Jun 2014 08:00:40 -0500 From: Nathan Lynch User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: "linux-arm-kernel@lists.infradead.org" , Russell King - ARM Linux CC: , Subject: Re: Oops: 17 SMP ARM (v3.16-rc2) References: <20140626140115.GQ32514@n2100.arm.linux.org.uk> <20140626151424.GT32514@n2100.arm.linux.org.uk> <20140627112151.GF32514@n2100.arm.linux.org.uk> <3FFB61A7A8473C49831AF20FA193534A43CADFA7@ALVA-EXMB01.alv.autoliv.int> <20140627163108.GP32514@n2100.arm.linux.org.uk> <3FFB61A7A8473C49831AF20FA193534A43CB69F6@ALVA-EXMB01.alv.autoliv.int> In-Reply-To: <3FFB61A7A8473C49831AF20FA193534A43CB69F6@ALVA-EXMB01.alv.autoliv.int> Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 30 Jun 2014 13:00:42.0930 (UTC) FILETIME=[4CDDA120:01CF9463] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 06/30/2014 07:30 AM, Fredrik Noring wrote: >> >> On Fri, Jun 27, 2014 at 04:16:57PM +0000, Fredrik Noring wrote: >>> Please find below a trace that appeared once with 3.16-rc2. Perhaps it >>> is of some interest? >> >> It's not that serious... I know that the FEC ethernet driver is horrendously >> racy (I have had a patch set for about the last six months which fixes some of >> its problems) but as I've had a lot of patches to deal with, and it's been >> pushed to the back of the queue... >> >> The races don't lead to data corruption though, merely timeouts and some >> lost packets. > It seems to be a compiler issue, where (GCC) 4.8.2 does not produce a properly > working kernel. Happily, (Fedora 2013.11.24-2.fc19) 4.8.1 appears to do a lot > better. No crashes so far with v3.16-rc2! > Did you narrow it down to a particular GCC bug? The symptoms you reported remind me of: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58854 Sadly, unpatched GCC 4.8.1 and 4.8.2 are unsuitable for building ARM kernels. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/