From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932529AbbJ2PJ2 (ORCPT ); Thu, 29 Oct 2015 11:09:28 -0400 Received: from foss.arm.com ([217.140.101.70]:39279 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751700AbbJ2PJ1 (ORCPT ); Thu, 29 Oct 2015 11:09:27 -0400 Date: Thu, 29 Oct 2015 15:09:22 +0000 From: Will Deacon To: kbuild test robot Cc: Li Bin , kbuild-all@01.org, catalin.marinas@arm.com, rostedt@goodmis.org, takahiro.akashi@linaro.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, guohanjun@huawei.com, dingtianhong@huawei.com, zhouchengming1@huawei.com Subject: Re: [PATCH] recordmcount: arm64: replace the ignored mcount call into nop Message-ID: <20151029150922.GE3440@arm.com> References: <1446019445-14421-1-git-send-email-huawei.libin@huawei.com> <201510292118.ZYBYzBGa%fengguang.wu@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <201510292118.ZYBYzBGa%fengguang.wu@intel.com> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Oct 29, 2015 at 09:35:42PM +0800, kbuild test robot wrote: > [auto build test ERROR on arm64/for-next/core -- if it's inappropriate base, please suggest rules for selecting the more suitable base] > > url: https://github.com/0day-ci/linux/commits/Li-Bin/recordmcount-arm64-replace-the-ignored-mcount-call-into-nop/20151028-160846 > config: arm64-allmodconfig (attached as .config) > reproduce: > wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross > chmod +x ~/bin/make.cross > # save the attached .config to linux build tree > make.cross ARCH=arm64 > > All errors (new ones prefixed by >>): > > >> /bin/bash: line 1: 117734 Segmentation fault ./scripts/recordmcount "arch/arm64/kernel/traps.o" > -- > >> /bin/bash: line 1: 113824 Segmentation fault ./scripts/recordmcount "arch/arm64/mm/fault.o" I can reproduce this locally with an allmodconfig build. The offset parameter to make_nop_arm64 is nuts: Program received signal SIGSEGV, Segmentation fault. make_nop_arm64 (map=0x7ffff7fef000, offset=2600547309829750784) at scripts/recordmcount.c:170 170 if (*ptr != 0x94000000) Both shdr->sh_offset (0x17000000000000) and relp->r_offset (0x2400000000000000) look dodgy in the caller. Li, can you take a look please? Will