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X-CSE-ConnectionGUID: Wbriv4YQQC+YSV2iqwPKOw== X-CSE-MsgGUID: 0Lis/gXxRZKwSu6QpCexyw== X-IronPort-AV: E=McAfee;i="6800,10657,11745"; a="75069427" X-IronPort-AV: E=Sophos;i="6.23,152,1770624000"; d="scan'208";a="75069427" Received: from orviesa009.jf.intel.com ([10.64.159.149]) by fmvoesa113.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 31 Mar 2026 17:15:59 -0700 X-CSE-ConnectionGUID: 1A2psLgWTLyT/b+bsyLG1w== X-CSE-MsgGUID: vUdoNcJwSeKHnAQ92R5I9w== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,152,1770624000"; d="scan'208";a="226388635" Received: from lkp-server01.sh.intel.com (HELO 283bf2e1b94a) ([10.239.97.150]) by orviesa009.jf.intel.com with ESMTP; 31 Mar 2026 17:15:56 -0700 Received: from kbuild by 283bf2e1b94a with local (Exim 4.98.2) (envelope-from ) id 1w7jFQ-000000004Sj-1XBm; Wed, 01 Apr 2026 00:15:52 +0000 Date: Wed, 1 Apr 2026 08:15:22 +0800 From: kernel test robot To: david.laight.linux@gmail.com, Kees Cook , linux-hardening@vger.kernel.org, linux-kernel@vger.kernel.org Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, David Laight Subject: Re: [PATCH next 2/3] fortify: Optimise strnlen() Message-ID: <202604010835.IWCsUV7z-lkp@intel.com> References: <20260330132003.3379-3-david.laight.linux@gmail.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 In-Reply-To: <20260330132003.3379-3-david.laight.linux@gmail.com> Hi, kernel test robot noticed the following build errors: [auto build test ERROR on next-20260327] url: https://github.com/intel-lab-lkp/linux/commits/david-laight-linux-gmail-com/fortify-replace-__compiletime_lessthan-with-statically_true/20260331-041123 base: next-20260327 patch link: https://lore.kernel.org/r/20260330132003.3379-3-david.laight.linux%40gmail.com patch subject: [PATCH next 2/3] fortify: Optimise strnlen() config: x86_64-buildonly-randconfig-001-20260331 (https://download.01.org/0day-ci/archive/20260401/202604010835.IWCsUV7z-lkp@intel.com/config) compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260401/202604010835.IWCsUV7z-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202604010835.IWCsUV7z-lkp@intel.com/ All errors (new ones prefixed by >>): >> ld.lld: error: undefined symbol: __fortify_undefined >>> referenced by fortify-string.h:290 (include/linux/fortify-string.h:290) >>> vmlinux.o:(parse_early_param) >>> referenced by fortify-string.h:218 (include/linux/fortify-string.h:218) >>> vmlinux.o:(parse_early_param) >>> referenced by fortify-string.h:290 (include/linux/fortify-string.h:290) >>> vmlinux.o:(setup_boot_config) >>> referenced 2103 more times -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki