Hi Coiby, kernel test robot noticed the following build errors:
[auto build test ERROR on b320789d6883cc00ac78ce83bccbfe7ed58afcf0] url: https://github.com/intel-lab-lkp/linux/commits/Coiby-Xu/crash-Add-KUnit-tests-for-crash_exclude_mem_range/20250904-174105 base: b320789d6883cc00ac78ce83bccbfe7ed58afcf0 patch link: https://lore.kernel.org/r/20250904093855.1180154-2-coxu%40redhat.com patch subject: [PATCH v6 2/2] crash: Add KUnit tests for crash_exclude_mem_range config: x86_64-randconfig-073-20250908 (https://download.01.org/0day-ci/archive/20250909/202509090415.coytgte4-...@intel.com/config) compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250909/202509090415.coytgte4-...@intel.com/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 <l...@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202509090415.coytgte4-...@intel.com/ All errors (new ones prefixed by >>, old ones prefixed by <<): >> ERROR: modpost: "crash_exclude_mem_range" [kernel/crash_core_test.ko] >> undefined! -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki