Hi Peter, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on next-20220909] [cannot apply to arm64/for-next/core linus/master v6.0-rc4 v6.0-rc3 v6.0-rc2 v6.0-rc4] [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/Peter-Collingbourne/kasan-also-display-registers-for-reports-from-HW-exceptions/20220910-132721 base: 9a82ccda91ed2b40619cb3c10d446ae1f97bab6e config: powerpc-allmodconfig (https://download.01.org/0day-ci/archive/20220910/202209101733.SvgcwWsA-lkp@xxxxxxxxx/config) compiler: powerpc-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://github.com/intel-lab-lkp/linux/commit/2140392d32582f62b922eaf4d1824e5a7838b420 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Peter-Collingbourne/kasan-also-display-registers-for-reports-from-HW-exceptions/20220910-132721 git checkout 2140392d32582f62b922eaf4d1824e5a7838b420 # 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=powerpc SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> mm/kasan/report.c:506:6: warning: no previous prototype for 'kasan_report_regs' [-Wmissing-prototypes] 506 | bool kasan_report_regs(unsigned long addr, size_t size, bool is_write, | ^~~~~~~~~~~~~~~~~ vim +/kasan_report_regs +506 mm/kasan/report.c 505 > 506 bool kasan_report_regs(unsigned long addr, size_t size, bool is_write, 507 struct pt_regs *regs) 508 { 509 return __kasan_report(addr, size, is_write, instruction_pointer(regs), 510 regs); 511 } 512 -- 0-DAY CI Kernel Test Service https://01.org/lkp