Hi Kees, kernel test robot noticed the following build warnings: [auto build test WARNING on kees/for-next/hardening] [also build test WARNING 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: arm64-randconfig-s053-20230406 (https://download.01.org/0day-ci/archive/20230407/202304071824.648116sH-lkp@xxxxxxxxx/config) compiler: aarch64-linux-gcc (GCC) 12.1.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.4-39-gce1a6720-dirty # 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=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=arm64 olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=arm64 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/202304071824.648116sH-lkp@xxxxxxxxx/ sparse warnings: (new ones prefixed by >>) lib/string_helpers.c:1030:14: sparse: sparse: undefined identifier 'FORTIFY_FUNC_strncpy' lib/string_helpers.c:1033:14: sparse: sparse: undefined identifier 'FORTIFY_FUNC_strnlen' lib/string_helpers.c:1036:14: sparse: sparse: undefined identifier 'FORTIFY_FUNC_strlen' lib/string_helpers.c:1039:14: sparse: sparse: undefined identifier 'FORTIFY_FUNC_strlcpy' lib/string_helpers.c:1042:14: sparse: sparse: undefined identifier 'FORTIFY_FUNC_strscpy' lib/string_helpers.c:1045:14: sparse: sparse: undefined identifier 'FORTIFY_FUNC_strlcat' lib/string_helpers.c:1048:14: sparse: sparse: undefined identifier 'FORTIFY_FUNC_strcat' lib/string_helpers.c:1051:14: sparse: sparse: undefined identifier 'FORTIFY_FUNC_strncat' lib/string_helpers.c:1054:14: sparse: sparse: undefined identifier 'FORTIFY_FUNC_memset' lib/string_helpers.c:1057:14: sparse: sparse: undefined identifier 'FORTIFY_FUNC_memcpy' lib/string_helpers.c:1060:14: sparse: sparse: undefined identifier 'FORTIFY_FUNC_memmove' lib/string_helpers.c:1063:14: sparse: sparse: undefined identifier 'FORTIFY_FUNC_memscan' lib/string_helpers.c:1066:14: sparse: sparse: undefined identifier 'FORTIFY_FUNC_memcmp' lib/string_helpers.c:1069:14: sparse: sparse: undefined identifier 'FORTIFY_FUNC_memchr' lib/string_helpers.c:1072:14: sparse: sparse: undefined identifier 'FORTIFY_FUNC_memchr_inv' lib/string_helpers.c:1075:14: sparse: sparse: undefined identifier 'FORTIFY_FUNC_kmemdup' lib/string_helpers.c:1078:14: sparse: sparse: undefined identifier 'FORTIFY_FUNC_strcpy' >> lib/string_helpers.c:1030:14: sparse: sparse: incompatible types for 'case' statement lib/string_helpers.c:1033:14: sparse: sparse: incompatible types for 'case' statement lib/string_helpers.c:1036:14: sparse: sparse: incompatible types for 'case' statement lib/string_helpers.c:1039:14: sparse: sparse: incompatible types for 'case' statement lib/string_helpers.c:1042:14: sparse: sparse: incompatible types for 'case' statement lib/string_helpers.c:1045:14: sparse: sparse: incompatible types for 'case' statement lib/string_helpers.c:1048:14: sparse: sparse: incompatible types for 'case' statement lib/string_helpers.c:1051:14: sparse: sparse: incompatible types for 'case' statement lib/string_helpers.c:1054:14: sparse: sparse: incompatible types for 'case' statement lib/string_helpers.c:1057:14: sparse: sparse: incompatible types for 'case' statement lib/string_helpers.c:1060:14: sparse: sparse: incompatible types for 'case' statement lib/string_helpers.c:1063:14: sparse: sparse: incompatible types for 'case' statement lib/string_helpers.c:1066:14: sparse: sparse: incompatible types for 'case' statement lib/string_helpers.c:1069:14: sparse: sparse: incompatible types for 'case' statement lib/string_helpers.c:1072:14: sparse: sparse: incompatible types for 'case' statement lib/string_helpers.c:1075:14: sparse: sparse: incompatible types for 'case' statement lib/string_helpers.c:1078:14: sparse: sparse: incompatible types for 'case' statement lib/string_helpers.c:1030:14: sparse: sparse: Expected constant expression in case statement lib/string_helpers.c:1033:14: sparse: sparse: Expected constant expression in case statement lib/string_helpers.c:1036:14: sparse: sparse: Expected constant expression in case statement lib/string_helpers.c:1039:14: sparse: sparse: Expected constant expression in case statement lib/string_helpers.c:1042:14: sparse: sparse: Expected constant expression in case statement lib/string_helpers.c:1045:14: sparse: sparse: Expected constant expression in case statement lib/string_helpers.c:1048:14: sparse: sparse: Expected constant expression in case statement lib/string_helpers.c:1051:14: sparse: sparse: Expected constant expression in case statement lib/string_helpers.c:1054:14: sparse: sparse: Expected constant expression in case statement lib/string_helpers.c:1057:14: sparse: sparse: Expected constant expression in case statement lib/string_helpers.c:1060:14: sparse: sparse: Expected constant expression in case statement lib/string_helpers.c:1063:14: sparse: sparse: Expected constant expression in case statement lib/string_helpers.c:1066:14: sparse: sparse: Expected constant expression in case statement lib/string_helpers.c:1069:14: sparse: sparse: Expected constant expression in case statement lib/string_helpers.c:1072:14: sparse: sparse: Expected constant expression in case statement lib/string_helpers.c:1075:14: sparse: sparse: Expected constant expression in case statement lib/string_helpers.c:1078:14: sparse: sparse: Expected constant expression in case statement vim +/case +1030 lib/string_helpers.c 1023 1024 void __fortify_report(u8 reason) 1025 { 1026 const char *name; 1027 const bool write = !!(reason & 0x1); 1028 1029 switch (reason >> 1) { > 1030 case FORTIFY_FUNC_strncpy: 1031 name = "strncpy"; 1032 break; 1033 case FORTIFY_FUNC_strnlen: 1034 name = "strnlen"; 1035 break; 1036 case FORTIFY_FUNC_strlen: 1037 name = "strlen"; 1038 break; 1039 case FORTIFY_FUNC_strlcpy: 1040 name = "strlcpy"; 1041 break; 1042 case FORTIFY_FUNC_strscpy: 1043 name = "strscpy"; 1044 break; 1045 case FORTIFY_FUNC_strlcat: 1046 name = "strlcat"; 1047 break; 1048 case FORTIFY_FUNC_strcat: 1049 name = "strcat"; 1050 break; 1051 case FORTIFY_FUNC_strncat: 1052 name = "strncat"; 1053 break; > 1054 case FORTIFY_FUNC_memset: 1055 name = "memset"; 1056 break; 1057 case FORTIFY_FUNC_memcpy: 1058 name = "memcpy"; 1059 break; 1060 case FORTIFY_FUNC_memmove: 1061 name = "memmove"; 1062 break; 1063 case FORTIFY_FUNC_memscan: 1064 name = "memscan"; 1065 break; 1066 case FORTIFY_FUNC_memcmp: 1067 name = "memcmp"; 1068 break; 1069 case FORTIFY_FUNC_memchr: 1070 name = "memchr"; 1071 break; 1072 case FORTIFY_FUNC_memchr_inv: 1073 name = "memchr_inv"; 1074 break; 1075 case FORTIFY_FUNC_kmemdup: 1076 name = "kmemdup"; 1077 break; 1078 case FORTIFY_FUNC_strcpy: 1079 name = "strcpy"; 1080 break; 1081 default: 1082 name = "unknown"; 1083 } 1084 WARN(1, "%s: detected buffer %s overflow\n", name, write ? "write" : "read"); 1085 } 1086 EXPORT_SYMBOL(__fortify_report); 1087 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
