Hi Tahsin, [auto build test ERROR on ext4/dev] [also build test ERROR on next-20170531] [cannot apply to v4.12-rc3] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Tahsin-Erdogan/ext4-xattr-in-inode-support/20170531-214310 base: https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git dev config: powerpc-pcm030_defconfig (attached as .config) compiler: powerpc-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705 reproduce: wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=powerpc All errors (new ones prefixed by >>): >> ERROR: "crc32c" [fs/ext4/ext4.ko] undefined! --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation