fs/btrfs/compression.o: warning: objtool: alloc_compressed_bio()+0x3af: unreachable instruction

fs/btrfs/compression.o: warning: objtool: alloc_compressed_bio()+0x3af: unreachable instruction

[kernel test robot]

CC: linux-kernel@vger.kernel.org
TO: Qu Wenruo <wqu@suse.com>
CC: David Sterba <dsterba@suse.com>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   5472f14a37421d1bca3dddf33cabd3bd6dbefbbc
commit: f472c28f2e883c3d2781ea6aaaca204e34e93b63 btrfs: determine stripe boundary at bio allocation time in btrfs_submit_compressed_read
date:   7 weeks ago
config: x86_64-randconfig-r035-20211128 (https://download.01.org/0day-ci/archive/20211214/202112141143.euTMArlo-lkp@intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 5c64d8ef8cc0c0ed3e0f2ae693d99e7f70f20a84)
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=f472c28f2e883c3d2781ea6aaaca204e34e93b63
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout f472c28f2e883c3d2781ea6aaaca204e34e93b63
        # 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

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/btrfs/compression.o: warning: objtool: alloc_compressed_bio()+0x3af: unreachable instruction

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