Messages in this thread | | | Date | Wed, 5 Jan 2022 11:55:35 +0800 | From | kernel test robot <> | Subject | arch/arm64/kernel/mte.c:197:13: warning: no previous prototype for function 'kasan_hw_tags_enable' |
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Hi Peter,
FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: c9e6606c7fe92b50a02ce51dda82586ebdf99b48 commit: e5af50a5df571c1d0268b02f924de49b742c990f arm64: kasan: mte: move GCR_EL1 switch to task switch when KASAN disabled date: 3 months ago config: arm64-randconfig-r025-20220105 (https://download.01.org/0day-ci/archive/20220105/202201051108.401TVotF-lkp@intel.com/config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project d5b6e30ed3acad794dd0aec400e617daffc6cc3d) 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 # install arm64 cross compiling tool for clang build # apt-get install binutils-aarch64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e5af50a5df571c1d0268b02f924de49b742c990f git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout e5af50a5df571c1d0268b02f924de49b742c990f # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash arch/arm64/kernel/
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
>> arch/arm64/kernel/mte.c:197:13: warning: no previous prototype for function 'kasan_hw_tags_enable' [-Wmissing-prototypes] void __init kasan_hw_tags_enable(struct alt_instr *alt, __le32 *origptr, ^ arch/arm64/kernel/mte.c:197:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void __init kasan_hw_tags_enable(struct alt_instr *alt, __le32 *origptr, ^ static arch/arm64/kernel/mte.c:103:20: warning: unused function '__mte_enable_kernel' [-Wunused-function] static inline void __mte_enable_kernel(const char *mode, unsigned long tcf) ^ 2 warnings generated.
vim +/kasan_hw_tags_enable +197 arch/arm64/kernel/mte.c
196 > 197 void __init kasan_hw_tags_enable(struct alt_instr *alt, __le32 *origptr, 198 __le32 *updptr, int nr_inst) 199 { 200 BUG_ON(nr_inst != 1); /* Branch -> NOP */ 201 202 if (kasan_hw_tags_enabled()) 203 *updptr = cpu_to_le32(aarch64_insn_gen_nop()); 204 } 205
--- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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