tree: https://git.kernel.org/pub/scm/linux/kernel/git/arnd/playground.git arm-kill-set_fs-4 head: 134f7ea9688d79375ef1358d83bbafb8097ca965 commit: 53c9506dd6897ae3076e20a792d153a227aef280 [19/37] ethtool: improve compat ioctl handling config: arm-randconfig-r035-20200917 (attached as .config) compiler: arm-linux-gnueabi-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 git checkout 53c9506dd6897ae3076e20a792d153a227aef280 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm 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 >>): net/ethtool/ioctl.c: In function 'ethtool_translate_compat': 817 | return in_oabi_syscall(); | ^~~~~~~~~~~~~~~ | in_compat_syscall cc1: some warnings being treated as errors # https://git.kernel.org/pub/scm/linux/kernel/git/arnd/playground.git/commi... git remote add arnd-playground https://git.kernel.org/pub/scm/linux/kernel/git/arnd/playground.git git fetch --no-tags arnd-playground arm-kill-set_fs-4 git checkout 53c9506dd6897ae3076e20a792d153a227aef280 vim +817 net/ethtool/ioctl.c 809 810 static inline bool ethtool_translate_compat(void) 811 { 812 #ifdef CONFIG_X86_64 813 /* On x86, translation is needed for i386 but not x32 */ 814 return in_ia32_syscall(); 815 #elif defined(CONFIG_ARM) 816 /* On 32-bit Arm, translation is needed for OABI only */ 818 #else 819 BUILD_BUG_ON(sizeof(struct compat_ethtool_rxnfc) != 820 sizeof(struct ethtool_rxnfc)); 821 #endif 822 823 return 0; 824 } 825 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org