TO: "Andrii, Nakryiko," <andriin(a)fb.com&gt; CC: Daniel Borkmann <daniel(a)iogearbox.net&gt; tree: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master head: 551f08b1d8eadbcb02e4384d28128cc05a8647a8 commit: 35dd30a79d27f96ab5ca28e65a869ed9e611af69 [1888/1893] bpf: Implement BPF ring buffer and verifier support for it config: x86_64-randconfig-a002-20200531 (attached as .config) compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 2388a096e7865c043e83ece4e26654bd3d1a20d5) 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 # install x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu git checkout 35dd30a79d27f96ab5ca28e65a869ed9e611af69 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>, old ones prefixed by <<): --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org