[kbuild-all] drivers/vfio/vfio_iommu_type1.o: warning: objtool: vfio_unmap_unpin()+0x599: unreachable instruction

CC: linux-kernel(a)vger.kernel.org TO: Robin Murphy <robin.murphy(a)arm.com&gt; CC: Joerg Roedel <jroedel(a)suse.de&gt; tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: e851dfae4371d3c751f1e18e8eb5eba993de1467 commit: 7a7c5badf85806eab75e31ab8d45021f1545b0e3 iommu: Indicate queued flushes via gather data date: 3 months ago config: x86_64-randconfig-r032-20211025 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project a461fa64bb37cffd73f683c74f6b0780379fc2ca) 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/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 7a7c5badf85806eab75e31ab8d45021f1545b0e3 # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash block// drivers/ kernel// lib// 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