Hi xu, kernel test robot noticed the following build errors: [auto build test ERROR on akpm-mm/mm-everything] [also build test ERROR on linus/master v6.15-rc3 next-20250422] [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/xu-xin/memcontrol-rename-mem_cgroup_scan_tasks/20250422-231623 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything patch link: https://lore.kernel.org/r/20250422112251.3231599-1-xu.xin16%40zte.com.cn patch subject: [PATCH RESEND 6/6] memcontrol-v1: add ksm_profit in cgroup/memory.ksm_stat config: i386-buildonly-randconfig-006-20250423 (https://download.01.org/0day-ci/archive/20250423/202504231523.owjrO2Yy-lkp@xxxxxxxxx/config) compiler: clang version 20.1.2 (https://github.com/llvm/llvm-project 58df0ef89dd64126512e4ee27b4ac3fd8ddf6247) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250423/202504231523.owjrO2Yy-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/202504231523.owjrO2Yy-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): >> ld.lld: error: undefined symbol: ksm_process_profit >>> referenced by memcontrol-v1.c:1843 (mm/memcontrol-v1.c:1843) >>> mm/memcontrol-v1.o:(evaluate_memcg_ksm_stat) in archive vmlinux.a -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
