Hi Christophe, I love your patch! Yet something to improve: [auto build test ERROR on linux/master] [also build test ERROR on linus/master v5.17-rc4] [cannot apply to hnaz-mm/master next-20220211] [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/Christophe-Leroy/mm-Uninline-cop... base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 2c271fe77d52a0555161926c232cd5bc07178b39 config: x86_64-randconfig-a011 (https://download.01.org/0day-ci/archive/20220214/202202140535.RW10p5av-lk...) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://github.com/0day-ci/linux/commit/d5452af34d189313c86879e429ed65fd1... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Christophe-Leroy/mm-Uninline-copy_overflow/20220214-033351 git checkout d5452af34d189313c86879e429ed65fd12bf1629 # save the config file to linux build tree mkdir build_dir make W=1 O=build_dir ARCH=x86_64 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 >>, old ones prefixed by <<): --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org