Hi Masahiro, I love your patch! Yet something to improve: [auto build test ERROR on kbuild/for-next] [cannot apply to linus/master v5.7-rc3 next-20200424] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Masahiro-Yamada/kbuild-support-userprogs-syntax/20200426-114001 base: https://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git for-next config: i386-allyesconfig (attached as .config) compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0 reproduce: # save the attached .config to linux build tree make ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): /usr/bin/ld: i386 architecture of input file `net/bpfilter/main.o' is incompatible with i386:x86-64 output >> collect2: error: ld returned 1 exit status --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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