Hi Sumit, I love your patch! Yet something to improve: [auto build test ERROR on linus/master] [also build test ERROR on v5.9-rc1] [cannot apply to hnaz-linux-mm/master linux/master next-20200819] [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/Sumit-Semwal/Anonymous-VMA-namin... base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 18445bf405cb331117bc98427b1ba6f12418ad17 config: s390-randconfig-r025-20200818 (attached as .config) compiler: s390-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 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=s390 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 >>): s390-linux-ld: kernel/sys.o: in function `prctl_set_vma': kernel/sys.c:2294: undefined reference to `madvise_set_anon_name' --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org