Hi John, kernel test robot noticed the following build warnings: [auto build test WARNING on akpm-mm/mm-nonmm-unstable] [also build test WARNING on linus/master v6.12-rc7 next-20241115] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/John-Stultz/lib-stackdepot-Avoid-null-pointer-if-stack_depot_save-is-called-too-early/20241116-230825 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-nonmm-unstable patch link: https://lore.kernel.org/r/20241116002322.1035417-1-jstultz%40google.com patch subject: [PATCH v2 1/2] lib: stacklog_debug: Introduce helper tool for collecting and displaying stacktraces config: arm-randconfig-r132-20241117 (https://download.01.org/0day-ci/archive/20241117/202411172216.8mrRZn7X-lkp@xxxxxxxxx/config) compiler: clang version 15.0.7 (https://github.com/llvm/llvm-project 8dfdcc7b7bf66834a761bd8de445840ef68e4d1a) reproduce: (https://download.01.org/0day-ci/archive/20241117/202411172216.8mrRZn7X-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202411172216.8mrRZn7X-lkp@xxxxxxxxx/ sparse warnings: (new ones prefixed by >>) >> lib/stacklog_debug.c:19:1: sparse: sparse: symbol 'stack_lock' was not declared. Should it be static? lib/stacklog_debug.c:21:5: sparse: sparse: symbol 'head' was not declared. Should it be static? vim +/stack_lock +19 lib/stacklog_debug.c 17 18 #define LIST_ENTRIES 512 > 19 DEFINE_SPINLOCK(stack_lock); 20 depot_stack_handle_t stack_list[LIST_ENTRIES]; 21 int head, tail; 22 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
