tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 4c9ca5b1597e3222177ba2a94658f78fa5ef4f58 commit: d926079f17bf8aa47485b6a55be1fc0175dbd1db [6910/7934] arm64: alternatives: add shared NOP callback config: arm64-allyesconfig (https://download.01.org/0day-ci/archive/20220920/202209201008.aloMAjCw-lkp@xxxxxxxxx/config) compiler: aarch64-linux-gcc (GCC) 12.1.0 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://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=d926079f17bf8aa47485b6a55be1fc0175dbd1db git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout d926079f17bf8aa47485b6a55be1fc0175dbd1db # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash arch/arm64/kernel/ drivers/hwtracing/coresight/ drivers/perf/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> arch/arm64/kernel/alternative.c:267:14: warning: no previous prototype for 'alt_cb_patch_nops' [-Wmissing-prototypes] 267 | noinstr void alt_cb_patch_nops(struct alt_instr *alt, __le32 *origptr, | ^~~~~~~~~~~~~~~~~ vim +/alt_cb_patch_nops +267 arch/arm64/kernel/alternative.c 266 > 267 noinstr void alt_cb_patch_nops(struct alt_instr *alt, __le32 *origptr, -- 0-DAY CI Kernel Test Service https://01.org/lkp