tree: https://github.com/zen-kernel/zen-kernel 5.15/lru head: 9c0236bacebd2c7783322c02a862ec8e6fac9f34 commit: 6ea6a04a179922d0a8b47d8bef2b56cd48d72da9 [12/13] mm/vmscan: add sysctl knobs for protecting the working set config: arm-buildonly-randconfig-r005-20211111 (attached as .config) compiler: arm-linux-gnueabi-gcc (GCC) 11.2.0 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/zen-kernel/zen-kernel/commit/6ea6a04a179922d0a8b47d8be... git remote add zen https://github.com/zen-kernel/zen-kernel git fetch --no-tags zen 5.15/lru git checkout 6ea6a04a179922d0a8b47d8bef2b56cd48d72da9 # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arm SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): 188 | unsigned long sysctl_anon_min_kbytes __read_mostly = CONFIG_ANON_MIN_KBYTES; | ^~~~~~~~~~~~~~~~~~~~~~ 189 | unsigned long sysctl_clean_low_kbytes __read_mostly = CONFIG_CLEAN_LOW_KBYTES; | ^~~~~~~~~~~~~~~~~~~~~~~ 190 | unsigned long sysctl_clean_min_kbytes __read_mostly = CONFIG_CLEAN_MIN_KBYTES; | ^~~~~~~~~~~~~~~~~~~~~~~ mm/vmscan.c: In function 'demote_page_list': mm/vmscan.c:1360:13: warning: variable 'err' set but not used [-Wunused-but-set-variable] 1360 | int err; | ^~~ vim +/CONFIG_ANON_MIN_KBYTES +188 mm/vmscan.c 187 191 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org