From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751890AbdG1Mnf (ORCPT ); Fri, 28 Jul 2017 08:43:35 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:34005 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751673AbdG1Mnd (ORCPT ); Fri, 28 Jul 2017 08:43:33 -0400 Date: Fri, 28 Jul 2017 05:43:28 -0700 From: "Paul E. McKenney" To: Fengguang Wu Cc: Peter Zijlstra , Mathieu Desnoyers , kbuild-all@01.org, linux-kernel Subject: Re: [kbuild-all] [rcu:rcu/next 4/4] frv-linux-ld: Warning: size of symbol `sys_membarrier' changed from 8 in kernel/sys_ni.o to 44 in kernel/sched/membarrier.o Reply-To: paulmck@linux.vnet.ibm.com References: <201707280827.3u22e3Nd%fengguang.wu@intel.com> <20170728003849.GU3730@linux.vnet.ibm.com> <1263288023.29217.1501202800701.JavaMail.zimbra@efficios.com> <20170728091933.3ptftxlynlinkw56@hirez.programming.kicks-ass.net> <20170728094216.p3ywnq6iibuce7kv@wfg-t540p.sh.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20170728094216.p3ywnq6iibuce7kv@wfg-t540p.sh.intel.com> User-Agent: Mutt/1.5.21 (2010-09-15) X-TM-AS-GCONF: 00 x-cbid: 17072812-0056-0000-0000-000003AE0DB5 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00007441; HX=3.00000241; KW=3.00000007; PH=3.00000004; SC=3.00000214; SDB=6.00894112; UDB=6.00447062; IPR=6.00674272; BA=6.00005495; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009; ZB=6.00000000; ZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00016424; XFM=3.00000015; UTC=2017-07-28 12:43:31 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17072812-0057-0000-0000-000007E42E5F Message-Id: <20170728124328.GC3730@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2017-07-28_05:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1706020000 definitions=main-1707280197 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jul 28, 2017 at 05:42:16PM +0800, Fengguang Wu wrote: > On Fri, Jul 28, 2017 at 11:19:33AM +0200, Peter Zijlstra wrote: > >On Fri, Jul 28, 2017 at 12:46:40AM +0000, Mathieu Desnoyers wrote: > > > >>> This is a new one on me. What do we do to fix it? > > > >Apparently (see below) the answer is, we ignore this. > > > >>I would suspect this might be caused by moving membarrier.c from kernel/ > >>to kernel/sched/. Perhaps Peter knows ? > > > > dhowells: hey, I know you don't care about FRV anymore, but suppose the 0-day thing says things like: > > >> frv-linux-ld: Warning: size of symbol `sys_setuid' changed from 272 in > > >> kernel/sys.o to 8 in kernel/sys_ni.o > > dhowells: do you have any clue wth went wrong? > > peterz: it's been saying that for a long time, but I've no idea why > > didn't seem to stop it working > > I suspect it might not be handing weak symbol elimination correctly or something > > fair enough, I'll ignore it then > > OK, I'll teach the robot to ignore all such warnings: > > frv-linux-ld: Warning: size of symbol `sys_setuid' changed from 272 in kernel/sys.o to 8 in kernel/sys_ni.o > > I'll use blacklist pattern: > > frv-linux-ld: Warning: size of symbol .* changed from Thank you all for chasing this down! Thanx, Paul