From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7B110C433F5 for ; Thu, 2 Dec 2021 21:17:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1377061AbhLBVVR (ORCPT ); Thu, 2 Dec 2021 16:21:17 -0500 Received: from mga14.intel.com ([192.55.52.115]:48712 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1377025AbhLBVVH (ORCPT ); Thu, 2 Dec 2021 16:21:07 -0500 X-IronPort-AV: E=McAfee;i="6200,9189,10186"; a="237067816" X-IronPort-AV: E=Sophos;i="5.87,282,1631602800"; d="scan'208";a="237067816" Received: from orsmga007.jf.intel.com ([10.7.209.58]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Dec 2021 13:17:44 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.87,282,1631602800"; d="scan'208";a="500912546" Received: from lkp-server02.sh.intel.com (HELO 9e1e9f9b3bcb) ([10.239.97.151]) by orsmga007.jf.intel.com with ESMTP; 02 Dec 2021 13:17:42 -0800 Received: from kbuild by 9e1e9f9b3bcb with local (Exim 4.92) (envelope-from ) id 1mstSX-000Ggx-CJ; Thu, 02 Dec 2021 21:17:41 +0000 Date: Fri, 3 Dec 2021 05:17:27 +0800 From: kernel test robot To: Peter Zijlstra Cc: llvm@lists.linux.dev, kbuild-all@lists.01.org, linux-kernel@vger.kernel.org Subject: [peterz-queue:x86/wip.ibt 7/15] arch/x86/mm/init.c:178:1: warning: 'nocf_check' attribute ignored; use -fcf-protection to enable the attribute Message-ID: <202112030502.YDiwVBKh-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org tree: https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git x86/wip.ibt head: a2453d618b87ec61000fecf66dee9cbd109e2e50 commit: d7103a390456460fd2b7d93081cd64b3e55c10f9 [7/15] x86: Don't generate ENDBR in .discard.text config: x86_64-randconfig-r001-20211202 (https://download.01.org/0day-ci/archive/20211203/202112030502.YDiwVBKh-lkp@intel.com/config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 4b553297ef3ee4dc2119d5429adf3072e90fac38) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git/commit/?id=d7103a390456460fd2b7d93081cd64b3e55c10f9 git remote add peterz-queue https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git git fetch --no-tags peterz-queue x86/wip.ibt git checkout d7103a390456460fd2b7d93081cd64b3e55c10f9 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash arch/x86/mm/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All warnings (new ones prefixed by >>): >> arch/x86/mm/init.c:178:1: warning: 'nocf_check' attribute ignored; use -fcf-protection to enable the attribute [-Wignored-attributes] RESERVE_BRK(early_pgt_alloc, INIT_PGT_BUF_SIZE); ^ arch/x86/include/asm/setup.h:122:56: note: expanded from macro 'RESERVE_BRK' static void __section(".discard.text") __attribute__((nocf_check)) __used notrace \ ^ 1 warning generated. vim +/nocf_check +178 arch/x86/mm/init.c 167dcfc08b0b1f Lorenzo Stoakes 2020-12-15 176 fb754f958f8e46 Thomas Garnier 2016-08-09 177 #define INIT_PGT_BUF_SIZE (INIT_PGD_PAGE_COUNT * PAGE_SIZE) 8d57470d8f8596 Yinghai Lu 2012-11-16 @178 RESERVE_BRK(early_pgt_alloc, INIT_PGT_BUF_SIZE); 8d57470d8f8596 Yinghai Lu 2012-11-16 179 void __init early_alloc_pgt_buf(void) 8d57470d8f8596 Yinghai Lu 2012-11-16 180 { 8d57470d8f8596 Yinghai Lu 2012-11-16 181 unsigned long tables = INIT_PGT_BUF_SIZE; 8d57470d8f8596 Yinghai Lu 2012-11-16 182 phys_addr_t base; 8d57470d8f8596 Yinghai Lu 2012-11-16 183 8d57470d8f8596 Yinghai Lu 2012-11-16 184 base = __pa(extend_brk(tables, PAGE_SIZE)); 8d57470d8f8596 Yinghai Lu 2012-11-16 185 8d57470d8f8596 Yinghai Lu 2012-11-16 186 pgt_buf_start = base >> PAGE_SHIFT; 8d57470d8f8596 Yinghai Lu 2012-11-16 187 pgt_buf_end = pgt_buf_start; 8d57470d8f8596 Yinghai Lu 2012-11-16 188 pgt_buf_top = pgt_buf_start + (tables >> PAGE_SHIFT); 8d57470d8f8596 Yinghai Lu 2012-11-16 189 } 8d57470d8f8596 Yinghai Lu 2012-11-16 190 :::::: The code at line 178 was first introduced by commit :::::: 8d57470d8f859635deffe3919d7d4867b488b85a x86, mm: setup page table in top-down :::::: TO: Yinghai Lu :::::: CC: H. Peter Anvin --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org