CC: Doug Ledford <dledford(a)redhat.com&gt; CC: Jason Gunthorpe <jgg+lists(a)ziepe.ca&gt; CC: linux-rdma(a)vger.kernel.org TO: Gary Leshner <Gary.S.Leshner(a)intel.com&gt; CC: Jason Gunthorpe <jgg(a)ziepe.ca&gt; CC: Mike Marciniszyn <mike.marciniszyn(a)intel.com&gt; CC: Dennis Dalessandro <dennis.dalessandro(a)intel.com&gt; CC: Kaike Wan <kaike.wan(a)intel.com&gt; tree: https://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git wip/jgg-for-next head: a94dae867c5663f36c950b82832e146a6c2f0e42 commit: 438d7dda9841ec42ef7d9024dc45347f9526016a [145/171] IB/hfi1: Add the transmit side of a datagram ipoib RDMA netdev config: x86_64-randconfig-a015-20200521 (attached as .config) compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 3393cc4cebf9969db94dc424b7a2b6195589c33b) 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 438d7dda9841ec42ef7d9024dc45347f9526016a # 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