Hi Suren, I love your patch! Yet something to improve: [auto build test ERROR on arm64/for-next/core] [also build test ERROR on tip/x86/asm linus/master v5.13-rc7] [cannot apply to hnaz-linux-mm/master next-20210623] [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] url: https://github.com/0day-ci/linux/commits/Suren-Baghdasaryan/mm-introduce-... base: https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/core config: sh-allmodconfig (attached as .config) compiler: sh4-linux-gcc (GCC) 9.3.0 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/0day-ci/linux/commit/64bd00602e706bc1b2e2267ca1434646c... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Suren-Baghdasaryan/mm-introduce-process_reap-system-call/20210624-032923 git checkout 64bd00602e706bc1b2e2267ca1434646c0900fa1 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=sh 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 >>): sh4-linux-ld: mm/oom_kill.o: in function `sys_process_reap': Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for SND_ATMEL_SOC_PDC Depends on SOUND && !UML && SND && SND_SOC && SND_ATMEL_SOC && HAS_DMA Selected by - SND_ATMEL_SOC_SSC && SOUND && !UML && SND && SND_SOC && SND_ATMEL_SOC - SND_ATMEL_SOC_SSC_PDC && SOUND && !UML && SND && SND_SOC && SND_ATMEL_SOC && ATMEL_SSC --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org