Hi Shiyang, kernel test robot noticed the following build warnings: [auto build test WARNING on tip/x86/core] [also build test WARNING on cxl/next linus/master v6.11-rc2 next-20240809] [cannot apply to cxl/pending] [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/Shiyang-Ruan/cxl-core-introduce-device-reporting-poison-hanlding/20240809-013658 base: tip/x86/core patch link: https://lore.kernel.org/r/20240808151328.707869-3-ruansy.fnst%40fujitsu.com patch subject: [PATCH v4 2/2] cxl: avoid duplicated report from MCE & device config: x86_64-randconfig-121-20240809 (https://download.01.org/0day-ci/archive/20240809/202408091914.TFbjPuNQ-lkp@xxxxxxxxx/config) compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240809/202408091914.TFbjPuNQ-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/202408091914.TFbjPuNQ-lkp@xxxxxxxxx/ sparse warnings: (new ones prefixed by >>) >> drivers/cxl/core/mbox.c:1465:1: sparse: sparse: symbol 'cxl_mce_records' was not declared. Should it be static? drivers/cxl/core/mbox.c: note: in included file (through include/linux/gfp.h, include/linux/xarray.h, include/linux/list_lru.h, ...): include/linux/mmzone.h:2018:40: sparse: sparse: self-comparison always evaluates to false vim +/cxl_mce_records +1465 drivers/cxl/core/mbox.c 1464 > 1465 DEFINE_XARRAY(cxl_mce_records); 1466 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki