tree: https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git kspp/memcpy/next-20210618/v0 head: fd2aa2a169de8bde9502e7a2fc48cd03d4bfd996 commit: dd93fde9c4d11dfdf032f768a92ddc9c879fbc78 [57/82] fortify: Add compile-time FORTIFY_SOURCE tests config: x86_64-randconfig-a002-20210618 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project d1baf2895467735ab14f4b3415fce204c0cc8e7f) 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 x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git/commit/?id... git remote add kees https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git git fetch --no-tags kees kspp/memcpy/next-20210618/v0 git checkout dd93fde9c4d11dfdf032f768a92ddc9c879fbc78 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All error/warnings (new ones prefixed by >>): warning: unsafe memmove() usage lacked '__read_overflow2' warning in lib/test_fortify/read_overflow2-memmove.c In file included from lib/test_fortify/read_overflow2-memmove.c:5: void do_fortify_tests(void) ^ lib/test_fortify/test_fortify.h:21:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void do_fortify_tests(void) ^ static 1 error generated. -- In file included from lib/test_fortify/read_overflow-memcmp.c:5: void do_fortify_tests(void) ^ lib/test_fortify/test_fortify.h:21:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void do_fortify_tests(void) ^ static 1 error generated. -- warning: unsafe memmove() usage lacked '__write_overflow' warning in lib/test_fortify/write_overflow-memmove.c In file included from lib/test_fortify/write_overflow-memmove.c:5: void do_fortify_tests(void) ^ lib/test_fortify/test_fortify.h:21:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void do_fortify_tests(void) ^ static 1 error generated. -- In file included from lib/test_fortify/read_overflow-memscan.c:5: void do_fortify_tests(void) ^ lib/test_fortify/test_fortify.h:21:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void do_fortify_tests(void) ^ static 1 error generated. -- In file included from lib/test_fortify/read_overflow2-memcmp.c:5: void do_fortify_tests(void) ^ lib/test_fortify/test_fortify.h:21:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void do_fortify_tests(void) ^ static 1 error generated. -- warning: unsafe memcpy() usage lacked '__read_overflow2' warning in lib/test_fortify/read_overflow2-memcpy.c In file included from lib/test_fortify/read_overflow2-memcpy.c:5: void do_fortify_tests(void) ^ lib/test_fortify/test_fortify.h:21:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void do_fortify_tests(void) ^ static 1 error generated. -- In file included from lib/test_fortify/write_overflow-strscpy.c:5: void do_fortify_tests(void) ^ lib/test_fortify/test_fortify.h:21:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void do_fortify_tests(void) ^ static 1 error generated. -- warning: unsafe memcpy() usage lacked '__write_overflow' warning in lib/test_fortify/write_overflow-memcpy.c In file included from lib/test_fortify/write_overflow-memcpy.c:5: void do_fortify_tests(void) ^ lib/test_fortify/test_fortify.h:21:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void do_fortify_tests(void) ^ static 1 error generated. -- In file included from lib/test_fortify/read_overflow-memchr_inv.c:5: void do_fortify_tests(void) ^ lib/test_fortify/test_fortify.h:21:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void do_fortify_tests(void) ^ static 1 error generated. -- In file included from lib/test_fortify/read_overflow-memchr.c:5: void do_fortify_tests(void) ^ lib/test_fortify/test_fortify.h:21:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void do_fortify_tests(void) ^ static 1 error generated. -- In file included from lib/test_fortify/write_overflow-strncpy.c:5: void do_fortify_tests(void) ^ lib/test_fortify/test_fortify.h:21:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void do_fortify_tests(void) ^ static 1 error generated. .. vim +/do_fortify_tests +21 lib/test_fortify/test_fortify.h 20 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org