tree:   https://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git arm64/exception-fixups/rework
head:   90950d59d23861b2a34852cf080a452990ad9015
commit: bb83c16746f234980c3865b8e7e5eb162a8fc8e2 [5/7] arm64: add basic extable fixup handler
config: arm64-randconfig-r001-20211004 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 58b68e70ebf6308f982426a2618782f473218eed)
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/mark/linux.git/commit/?id=bb83c16746f234980c3865b8e7e5eb162a8fc8e2
        git remote add mark https://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git
        git fetch --no-tags mark arm64/exception-fixups/rework
        git checkout bb83c16746f234980c3865b8e7e5eb162a8fc8e2
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=arm64 

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/mm/extable.c:34:6: warning: no previous prototype for function 'ex_handler_fixup' [-Wmissing-prototypes]
   bool ex_handler_fixup(const struct exception_table_entry *fixup,
        ^
   arch/arm64/mm/extable.c:34:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   bool ex_handler_fixup(const struct exception_table_entry *fixup,
   ^
   static 
   1 warning generated.


vim +/ex_handler_fixup +34 arch/arm64/mm/extable.c

    33	
  > 34	bool ex_handler_fixup(const struct exception_table_entry *fixup,

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org