tree: https://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git arm64/entry/rework head: c7071810c4aa3f59ecec504f7661d6cb8bb9b94f commit: c7071810c4aa3f59ecec504f7661d6cb8bb9b94f [16/16] arm64: entry: convert irq handlers to C config: arm64-randconfig-r033-20210311 (attached as .config) compiler: aarch64-linux-gcc (GCC) 9.3.0 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/mark/linux.git/commit/?id... git remote add mark-rutland https://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git git fetch --no-tags mark-rutland arm64/entry/rework git checkout c7071810c4aa3f59ecec504f7661d6cb8bb9b94f # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm64 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 >>): 346 | asmlinkage void noinstr el1_irq_handler(struct pt_regs *regs) | ^~~~~~~~~~~~~~~ 351 | asmlinkage void noinstr el1_fiq_handler(struct pt_regs *regs) | ^~~~~~~~~~~~~~~ arch/arm64/kernel/entry-common.c:356:25: warning: no previous prototype for 'el1_error_handler' [-Wmissing-prototypes] 356 | asmlinkage void noinstr el1_error_handler(struct pt_regs *regs) | ^~~~~~~~~~~~~~~~~ 576 | asmlinkage void noinstr el0_irq_handler(struct pt_regs *regs) | ^~~~~~~~~~~~~~~ 581 | asmlinkage void noinstr el0_fiq_handler(struct pt_regs *regs) | ^~~~~~~~~~~~~~~ arch/arm64/kernel/entry-common.c:586:25: warning: no previous prototype for 'el0_error_handler' [-Wmissing-prototypes] 586 | asmlinkage void noinstr el0_error_handler(struct pt_regs *regs) | ^~~~~~~~~~~~~~~~~ vim +/el1_irq_handler +346 arch/arm64/kernel/entry-common.c 345 347 { 348 el1_interrupt(regs, handle_arch_irq); 349 } 350 352 { 353 el1_interrupt(regs, handle_arch_fiq); 354 } 355 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org