Hi, [FYI, it's a private test report for your RFC patch.] [auto build test WARNING on v5.14-rc5] [also build test WARNING on next-20210812] [cannot apply to arm64/for-next/core tip/perf/core] [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/0day-ci/linux/commits/madvenka-linux-microsoft-com/arm... base: 36a21d51725af2ce0700c6ebcb6b9594aac658a6 config: arm64-allyesconfig (attached as .config) compiler: aarch64-linux-gcc (GCC) 10.3.0 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/0day-ci/linux/commit/fcc398e417dd1c8521e069b516322c5e5... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review madvenka-linux-microsoft-com/arm64-Make-all-stack-walking-functions-use-arch_stack_walk/20210812-222448 git checkout fcc398e417dd1c8521e069b516322c5e5f615444 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross ARCH=arm64 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 >>): 29 | int __init init_sym_code_functions(void) | ^~~~~~~~~~~~~~~~~~~~~~~ vim +/init_sym_code_functions +29 arch/arm64/kernel/stacktrace.c 28 30 { 31 size_t size = (unsigned long)__sym_code_functions_end - 32 (unsigned long)__sym_code_functions_start; 33 34 sym_code_functions = (struct code_range *)__sym_code_functions_start; 35 /* 36 * Order it so that sym_code_functions is not visible before 37 * num_sym_code_functions. 38 */ 39 smp_mb(); 40 num_sym_code_functions = size / sizeof(struct code_range); 41 42 return 0; 43 } 44 early_initcall(init_sym_code_functions); 45 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org