Hi, I love your patch! Perhaps something to improve: [auto build test WARNING on akpm-mm/mm-everything] [also build test WARNING on linus/master v5.19-rc2 next-20220615] [cannot apply to vbabka-slab/for-next] [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] url: https://github.com/intel-lab-lkp/linux/commits/andrey-konovalov-linux-dev/kasan-switch-tag-based-modes-to-stack-ring-from-per-object-metadata/20220614-042239 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything config: s390-allyesconfig (https://download.01.org/0day-ci/archive/20220615/202206152134.sadCRvGk-lkp@xxxxxxxxx/config) compiler: s390-linux-gcc (GCC) 11.3.0 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://github.com/intel-lab-lkp/linux/commit/b0b10a57b2d9a5e5ae5d7ca62046b9774df1a88f git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review andrey-konovalov-linux-dev/kasan-switch-tag-based-modes-to-stack-ring-from-per-object-metadata/20220614-042239 git checkout b0b10a57b2d9a5e5ae5d7ca62046b9774df1a88f # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash mm/kasan/ 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/common.c: In function 'kasan_addr_to_slab': >> mm/kasan/common.c:35:19: warning: ordered comparison of pointer with null pointer [-Wextra] 35 | if ((addr >= (void *)PAGE_OFFSET) && (addr < high_memory)) | ^~ mm/kasan/common.c: In function '____kasan_slab_free': mm/kasan/common.c:202:12: warning: variable 'tag' set but not used [-Wunused-but-set-variable] 202 | u8 tag; | ^~~ vim +35 mm/kasan/common.c 32 33 struct slab *kasan_addr_to_slab(const void *addr) 34 { > 35 if ((addr >= (void *)PAGE_OFFSET) && (addr < high_memory)) 36 return virt_to_slab(addr); 37 return NULL; 38 } 39 -- 0-DAY CI Kernel Test Service https://01.org/lkp
