Subject: Re: [PATCH bpf] bpf: Support llvm-objcopy and llvm-objdump for vmlinux BTF

From: kbuild test robot <[email-masked]>
Date: Wed, 18 Mar 2020 01:02:19 +0800

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 <[email-masked]>

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/[email-masked]