[kbuild-all] [linux-next:master 5068/5074] mm/kasan/common.c:89:14: warning: no previous prototype for '__kasan_never_merge'

tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 3e14f70c05cda4794901ed8f976de3a88deebcc0 commit: 622c9ff2b804a1de896e757f8fe3a71fcef2941b [5068/5074] kasan, mm: allow cache merging with no metadata config: riscv-randconfig-p001-20201111 (attached as .config) compiler: riscv64-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/next/linux-next.git/commi... 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 622c9ff2b804a1de896e757f8fe3a71fcef2941b # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=riscv 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 >>): In file included from include/linux/kasan.h:15, from mm/kasan/common.c:14: arch/riscv/include/asm/kasan.h:21:11: error: expected ';' before 'void' 21 | asmlinkage void kasan_early_init(void); | ^~~~~ | ; 89 | slab_flags_t __kasan_never_merge(slab_flags_t flags) | ^~~~~~~~~~~~~~~~~~~ vim +/__kasan_never_merge +89 mm/kasan/common.c 84 85 /* 86 * Only allow cache merging when stack collection is disabled and no metadata 87 * is present. 88 */ 90 { 91 if (kasan_stack_collection_enabled()) 92 return flags; 93 return flags & ~SLAB_KASAN; 94 } 95 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org