Hi Kees, kernel test robot noticed the following build errors: [auto build test ERROR on kees/for-next/hardening] [also build test ERROR on kees/for-next/pstore kees/for-next/kspp akpm-mm/mm-everything linus/master v6.3-rc5 next-20230406] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Kees-Cook/kunit-tool-Enable-CONFIG_FORTIFY_SOURCE-under-UML/20230406-081014 base: https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git for-next/hardening patch link: https://lore.kernel.org/r/20230406000212.3442647-6-keescook%40chromium.org patch subject: [PATCH 6/9] fortify: Split reporting and avoid passing string pointer config: arm-randconfig-r025-20230403 (https://download.01.org/0day-ci/archive/20230406/202304061930.4Au0PASm-lkp@xxxxxxxxx/config) compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project 67409911353323ca5edf2049ef0df54132fa1ca7) 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 arm cross compiling tool for clang build # apt-get install binutils-arm-linux-gnueabi # https://github.com/intel-lab-lkp/linux/commit/4fd520e6ee549e1ffe8859e26e57ea64b48e78ea git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Kees-Cook/kunit-tool-Enable-CONFIG_FORTIFY_SOURCE-under-UML/20230406-081014 git checkout 4fd520e6ee549e1ffe8859e26e57ea64b48e78ea # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Link: https://lore.kernel.org/oe-kbuild-all/202304061930.4Au0PASm-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): >> ld.lld: error: undefined symbol: __fortify_panic >>> referenced by fortify-string.h:208 (include/linux/fortify-string.h:208) >>> arch/arm/boot/compressed/fdt_ro.o:(fdt_stringlist_count) >>> referenced by fortify-string.h:208 (include/linux/fortify-string.h:208) >>> arch/arm/boot/compressed/fdt_ro.o:(fdt_stringlist_search) >>> referenced by fortify-string.h:208 (include/linux/fortify-string.h:208) >>> arch/arm/boot/compressed/fdt_ro.o:(fdt_stringlist_get) -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
