drivers/vfio/vfio_iommu_type1.o: warning: objtool: vfio_unmap_unpin()+0x599: unreachable instruction

drivers/vfio/vfio_iommu_type1.o: warning: objtool: vfio_unmap_unpin()+0x599: unreachable instruction

[kernel test robot]

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CC: linux-kernel@vger.kernel.org
TO: Robin Murphy <robin.murphy@arm.com>
CC: Joerg Roedel <jroedel@suse.de>

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/?id=7a7c5badf85806eab75e31ab8d45021f1545b0e3
        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@intel.com>

All warnings (new ones prefixed by >>):

>> drivers/vfio/vfio_iommu_type1.o: warning: objtool: vfio_unmap_unpin()+0x599: unreachable instruction

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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