[hch-block:block-file.c 2/2] block/bdev.o: warning: objtool: bd_prepare_to_claim()+0x16c: unreachable instruction

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

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TO: Christoph Hellwig <hch@lst.de>

Hi Christoph,

First bad commit (maybe != root cause):

tree:   git://git.infradead.org/users/hch/block.git block-file.c
head:   3bf9453cb432aa7a08192ed5d6bf99e4adee6105
commit: 3bf9453cb432aa7a08192ed5d6bf99e4adee6105 [2/2] block: move fs/block_dev.c to block/bdev.c
config: x86_64-randconfig-a001-20210905 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 6fe2beba7d2a41964af658c8c59dd172683ef739)
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
        git remote add hch-block git://git.infradead.org/users/hch/block.git
        git fetch --no-tags hch-block block-file.c
        git checkout 3bf9453cb432aa7a08192ed5d6bf99e4adee6105
        # 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

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 >>):

>> block/bdev.o: warning: objtool: bd_prepare_to_claim()+0x16c: 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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