Hi Fangrui, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on bpf/master] [also build test WARNING on net/master linus/master v5.6-rc6] [cannot apply to net-next/master next-20200317] [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/Fangrui-Song/bpf-Support-llvm-objcopy-and-llvm-objdump-for-vmlinux-BTF/20200317-125132 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git master config: h8300-randconfig-a001-20200317 (attached as .config) compiler: h8300-linux-gcc (GCC) 9.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree GCC_VERSION=9.2.0 make.cross ARCH=h8300 If you fix the issue, kindly add following tag Reported-by: kbuild test robot All warnings (new ones prefixed by >>): >> h8300-linux-objcopy: .tmp_vmlinux.btf: warning: empty loadable segment detected at vaddr=0x3ffeac, is this intentional? h8300-linux-objcopy: .tmp_vmlinux.btf: warning: empty loadable segment detected at vaddr=0x400048, is this intentional? h8300-linux-objcopy: .tmp_vmlinux.btf: warning: empty loadable segment detected at vaddr=0xc72720, is this intentional? h8300-linux-objcopy: .tmp_vmlinux.btf: warning: empty loadable segment detected at vaddr=0x119cf5c, is this intentional? h8300-linux-objcopy: .tmp_vmlinux.btf: warning: empty loadable segment detected at vaddr=0x119e2d0, is this intentional? h8300-linux-objcopy: .tmp_vmlinux.btf: warning: empty loadable segment detected at vaddr=0x119f000, is this intentional? h8300-linux-objcopy: .tmp_vmlinux.btf: warning: empty loadable segment detected at vaddr=0x122b300, is this intentional? 1+0 records in 1+0 records out 1 byte copied, 6.8066e-05 s, 14.7 kB/s --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org