[kbuild-all] [cxl-cxl:pending 27/38] drivers/cxl/pci.o: warning: objtool: cxl_pci_mbox_send()+0x39d: unreachable instruction

CC: Alison Schofield <alison.schofield(a)intel.com&gt; CC: Vishal Verma <vishal.l.verma(a)intel.com&gt; CC: Ira Weiny <ira.weiny(a)intel.com&gt; CC: Ben Widawsky <ben.widawsky(a)intel.com&gt; CC: Dan Williams <dan.j.williams(a)intel.com&gt; CC: linux-kernel(a)vger.kernel.org TO: Dan Williams <dan.j.williams(a)intel.com&gt; tree: https://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl.git pending head: fa809cc6feedcd2575b63def7135dfaf066266bb commit: 9f91c1dc63597b10dadefbfc0af1a33a184f4d50 [27/38] cxl/mbox: Introduce the mbox_send operation config: x86_64-randconfig-a012-20210814 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 1f7b25ea76a925aca690da28de9d78db7ca99d0c) 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 # https://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl.git/commit/?id=9f... git remote add cxl-cxl https://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl.git git fetch --no-tags cxl-cxl pending git checkout 9f91c1dc63597b10dadefbfc0af1a33a184f4d50 # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org