tree: git://git.infradead.org/users/hch/misc.git sockopt-cleanups head: 0264f2fcbf6787d9084710c3f5adb536affc2022 commit: d8999fc632dd22b6da1bab932bd84b4d74bc1951 [4/6] net: simplify cBPF setsockopt compat handling config: openrisc-randconfig-r035-20200715 (attached as .config) compiler: or1k-linux-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 d8999fc632dd22b6da1bab932bd84b4d74bc1951 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=openrisc 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/core/sock.c: In function 'copy_bpf_fprog_from_user': 825 | struct compat_sock_fprog f32; | ^~~ 827 | if (len != sizeof(struct compat_sock_fprog)) | ^~~~~~ net/core/sock.c:829:40: error: invalid application of 'sizeof' to incomplete type 'struct compat_sock_fprog' 829 | if (copy_from_user(&f32, src, sizeof(struct compat_sock_fprog))) | ^~~~~~ net/core/sock.c:825:28: warning: unused variable 'f32' [-Wunused-variable] 825 | struct compat_sock_fprog f32; | ^~~ vim +825 net/core/sock.c 821 822 int copy_bpf_fprog_from_user(struct sock_fprog *dst, void __user *src, int len) 823 { 824 if (in_compat_syscall()) { 826 828 return -EINVAL; 829 if (copy_from_user(&f32, src, sizeof(struct compat_sock_fprog))) 830 return -EFAULT; 831 memset(dst, 0, sizeof(*dst)); 832 dst->len = f32.len; 833 dst->filter = compat_ptr(f32.filter); 834 } else { 835 if (len != sizeof(struct sock_fprog)) 836 return -EINVAL; 837 if (copy_from_user(dst, src, sizeof(struct sock_fprog))) 838 return -EFAULT; 839 } 840 841 return 0; 842 } 843 EXPORT_SYMBOL_GPL(copy_bpf_fprog_from_user); 844 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org