[brauner:fs.binfmt_misc 2/2] fs/binfmt_misc.o: warning: objtool: bm_status_read()+0xc0: unreachable instruction

[brauner:fs.binfmt_misc 2/2] fs/binfmt_misc.o: warning: objtool: bm_status_read()+0xc0: unreachable instruction

[kernel test robot]

CC: linux-kernel@vger.kernel.org
TO: Laurent Vivier <laurent@vivier.eu>
CC: Christian Brauner <christian.brauner@ubuntu.com>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux.git fs.binfmt_misc
head:   eb50eb90a694e05f6fd6533951a56ca3ed040761
commit: eb50eb90a694e05f6fd6533951a56ca3ed040761 [2/2] binfmt_misc: enable sandboxed mounts
config: x86_64-randconfig-a001-20211204 (https://download.01.org/0day-ci/archive/20211205/202112050537.EDKcUjHW-lkp@intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 5f1d1854eb1450d352663ee732235893c5782237)
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/brauner/linux.git/commit/?id=eb50eb90a694e05f6fd6533951a56ca3ed040761
        git remote add brauner https://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux.git
        git fetch --no-tags brauner fs.binfmt_misc
        git checkout eb50eb90a694e05f6fd6533951a56ca3ed040761
        # save the config file 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 M=fs/

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 >>):

>> fs/binfmt_misc.o: warning: objtool: bm_status_read()+0xc0: unreachable instruction

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