tree: https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git pending-5.10 head: 929e0c4ef688344580bfb57a585b24b1d99a5064 commit: cdf962f344e1e3f76f392fce8eb84e2547842e62 [389/399] powerpc: handle kdump appropriately with crash_kexec_post_notifiers option config: powerpc-allmodconfig (https://download.01.org/0day-ci/archive/20220124/202201241624.3z8iLQkW-lk...) compiler: powerpc-linux-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://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git/c... git remote add sashal-stable https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git git fetch --no-tags sashal-stable pending-5.10 git checkout cdf962f344e1e3f76f392fce8eb84e2547842e62 # 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=powerpc SHELL=/bin/bash arch/powerpc/kernel/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): arch/powerpc/kernel/smp.c:551:6: warning: no previous prototype for 'tick_broadcast' [-Wmissing-prototypes] 551 | void tick_broadcast(const struct cpumask *mask) | ^~~~~~~~~~~~~~ arch/powerpc/kernel/smp.c:561:6: warning: no previous prototype for 'debugger_ipi_callback' [-Wmissing-prototypes] 561 | void debugger_ipi_callback(struct pt_regs *regs) | ^~~~~~~~~~~~~~~~~~~~~ 611 | void crash_smp_send_stop(void) | ^~~~~~~~~~~~~~~~~~~ arch/powerpc/kernel/smp.c: In function 'add_cpu_to_masks': arch/powerpc/kernel/smp.c:1410:14: warning: variable 'ret' set but not used [-Wunused-but-set-variable] 1410 | bool ret; | ^~~ vim +/crash_smp_send_stop +611 arch/powerpc/kernel/smp.c 610 612 { 613 static bool stopped = false; 614 615 if (stopped) 616 return; 617 618 stopped = true; 619 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org