Re: [PATCH 07/14] vfio: simplify iommu group allocation for mediated devices

[kernel test robot <lkp@intel.com>]

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In-Reply-To: <20210824144649.1488190-8-hch@lst.de>
References: <20210824144649.1488190-8-hch@lst.de>
TO: Christoph Hellwig <hch@lst.de>

Hi Christoph,

I love your patch! Perhaps something to improve:

[auto build test WARNING on vfio/next]
[cannot apply to linus/master v5.14-rc7 next-20210827]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Christoph-Hellwig/vfio-Move-vfio_iommu_group_get-to-vfio_register_group_dev/20210824-234703
base:   https://github.com/awilliam/linux-vfio.git next
config: x86_64-randconfig-a001-20210829 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 510e106fa8635e7f9c51c896180b971de6309b2f)
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://github.com/0day-ci/linux/commit/710b535c0e5df66eae20c4a7f4868b8c29ce4376
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Christoph-Hellwig/vfio-Move-vfio_iommu_group_get-to-vfio_register_group_dev/20210824-234703
        git checkout 710b535c0e5df66eae20c4a7f4868b8c29ce4376
        # 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@intel.com>

All warnings (new ones prefixed by >>):

>> drivers/vfio/vfio.o: warning: objtool: __vfio_register_dev()+0x129: 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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