From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2136368 for ; Fri, 26 Nov 2021 12:29:01 +0000 (UTC) X-IronPort-AV: E=McAfee;i="6200,9189,10179"; a="234389298" X-IronPort-AV: E=Sophos;i="5.87,265,1631602800"; d="scan'208";a="234389298" Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Nov 2021 04:29:00 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.87,265,1631602800"; d="scan'208";a="457648785" Received: from lkp-server02.sh.intel.com (HELO 9e1e9f9b3bcb) ([10.239.97.151]) by orsmga003.jf.intel.com with ESMTP; 26 Nov 2021 04:28:58 -0800 Received: from kbuild by 9e1e9f9b3bcb with local (Exim 4.92) (envelope-from ) id 1mqaLZ-00085P-J0; Fri, 26 Nov 2021 12:28:57 +0000 Date: Fri, 26 Nov 2021 20:28:45 +0800 From: kernel test robot To: Peter Collingbourne Cc: llvm@lists.linux.dev, kbuild-all@lists.01.org, linux-kernel@vger.kernel.org, Will Deacon , Mark Rutland Subject: mm/kasan/sw_tags.c:211:6: warning: no previous prototype for function 'kasan_tag_mismatch' Message-ID: <202111262016.vdEfdFNO-lkp@intel.com> Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.10.1 (2018-07-13) Hi Peter, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: a4849f6000e29235a2707f22e39da6b897bb9543 commit: 1cbdf60bd1b74e397d48aa877367cfc621f45ffe kasan: arm64: support specialized outlined tag mismatch checks date: 6 months ago config: arm64-randconfig-r003-20211116 (https://download.01.org/0day-ci/archive/20211126/202111262016.vdEfdFNO-lkp@intel.com/config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project fbe72e41b99dc7994daac300d208a955be3e4a0a) 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 # install arm64 cross compiling tool for clang build # apt-get install binutils-aarch64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1cbdf60bd1b74e397d48aa877367cfc621f45ffe git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 1cbdf60bd1b74e397d48aa877367cfc621f45ffe # save the config file to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=arm64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All warnings (new ones prefixed by >>): >> mm/kasan/sw_tags.c:211:6: warning: no previous prototype for function 'kasan_tag_mismatch' [-Wmissing-prototypes] void kasan_tag_mismatch(unsigned long addr, unsigned long access_info, ^ mm/kasan/sw_tags.c:211:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void kasan_tag_mismatch(unsigned long addr, unsigned long access_info, ^ static 1 warning generated. vim +/kasan_tag_mismatch +211 mm/kasan/sw_tags.c 210 > 211 void kasan_tag_mismatch(unsigned long addr, unsigned long access_info, --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org