On Tue, Jul 27, 2021 at 10:27 PM kernel test robot <lkp@xxxxxxxxx> wrote: > > tree: https://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic.git asm-generic-uaccess-6 > head: 725a40b8ebf55a6b95e11a6b35717a99afc8ac98 > commit: 8ea805cb5e3294c8890c4781f82c03d6cc417bf5 [6/10] microblaze: use generic strncpy/strnlen from_user > config: microblaze-mmu_defconfig (attached as .config) > compiler: microblaze-linux-gcc (GCC) 10.3.0 > 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://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic.git/commit/?id=8ea805cb5e3294c8890c4781f82c03d6cc417bf5 > git remote add asm-generic https://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic.git > git fetch --no-tags asm-generic asm-generic-uaccess-6 > git checkout 8ea805cb5e3294c8890c4781f82c03d6cc417bf5 > # save the attached .config to linux build tree > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross ARCH=microblaze > > If you fix the issue, kindly add following tag as appropriate > Reported-by: kernel test robot <lkp@xxxxxxxxx> > > All errors (new ones prefixed by >>, old ones prefixed by <<): > > >> ERROR: modpost: "__copy_tofrom_user" [net/bridge/bridge.ko] undefined! Ah, I removed the wrong export, fixed now. Arnd