tree: https://github.com/hnaz/linux-mm master head: a46912c14343fd3269cc133494988af90b377d9f commit: b314f622e664eb263ea03ef7f4580e37146f123f [272/379] kallsyms: enhance %pS/s/b printing when KALLSYSMS is disabled config: arm-eseries_pxa_defconfig (https://download.01.org/0day-ci/archive/20220301/202203012040.uFWGm3My-lkp@xxxxxxxxx/config) compiler: arm-linux-gnueabi-gcc (GCC) 11.2.0 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 # https://github.com/hnaz/linux-mm/commit/b314f622e664eb263ea03ef7f4580e37146f123f git remote add hnaz-mm https://github.com/hnaz/linux-mm git fetch --no-tags hnaz-mm master git checkout b314f622e664eb263ea03ef7f4580e37146f123f # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arm SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): lib/vsprintf.c: In function 'sprint_module_info': >> lib/vsprintf.c:991:13: warning: variable 'modbuildid' set but not used [-Wunused-but-set-variable] 991 | int modbuildid = 0; | ^~~~~~~~~~ lib/vsprintf.c: In function 'va_format': lib/vsprintf.c:1759:9: warning: function 'va_format' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format] 1759 | buf += vsnprintf(buf, end > buf ? end - buf : 0, va_fmt->fmt, va); | ^~~ vim +/modbuildid +991 lib/vsprintf.c 981 982 #if !defined(CONFIG_KALLSYMS) && defined(CONFIG_MODULES) 983 static int sprint_module_info(char *buf, char *end, unsigned long value, 984 const char *fmt) 985 { 986 struct module *mod; 987 unsigned long offset = 1; 988 unsigned long base; 989 int ret = 0; 990 const char *modname; > 991 int modbuildid = 0; 992 int len; 993 #if IS_ENABLED(CONFIG_STACKTRACE_BUILD_ID) 994 const unsigned char *buildid = NULL; 995 #endif 996 997 if (is_ksym_addr(value)) 998 return 0; 999 1000 if (*fmt == 'B' && fmt[1] == 'b') 1001 modbuildid = 1; 1002 else if (*fmt == 'S' && (fmt[1] == 'b' || (fmt[1] == 'R' && fmt[2] == 'b'))) 1003 modbuildid = 1; 1004 else if (*fmt != 's') { 1005 /* 1006 * do nothing. 1007 */ 1008 } else 1009 offset = 0; 1010 1011 preempt_disable(); 1012 mod = __module_address(value); 1013 if (mod) { 1014 ret = 1; 1015 modname = mod->name; 1016 #if IS_ENABLED(CONFIG_STACKTRACE_BUILD_ID) 1017 if (modbuildid) 1018 buildid = mod->build_id; 1019 #endif 1020 if (offset) { 1021 base = (unsigned long)mod->core_layout.base; 1022 offset = value - base; 1023 } 1024 } 1025 1026 preempt_enable(); 1027 if (!ret) 1028 return 0; 1029 1030 /* address belongs to module */ 1031 if (offset) 1032 len = sprintf(buf, "0x%lx+0x%lx", base, offset); 1033 else 1034 len = sprintf(buf, "0x%lx", value); 1035 1036 len += sprintf(buf + len, " [%s", modname); 1037 #if IS_ENABLED(CONFIG_STACKTRACE_BUILD_ID) 1038 if (modbuildid && buildid) { 1039 /* build ID should match length of sprintf */ 1040 static_assert(sizeof(typeof_member(struct module, build_id)) == 20); 1041 len += sprintf(buf + len, " %20phN", buildid); 1042 } 1043 #endif 1044 len += sprintf(buf + len, "]"); 1045 1046 return len; 1047 } 1048 #else 1049 static inline int sprint_module_info(char *buf, char *end, unsigned long value, 1050 const char *fmt) 1051 { 1052 return 0; 1053 } 1054 #endif 1055 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
