fs/fuse/readdir.o: error: objtool: fuse_emit+0x5c3: unknown CFA base reg -1

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   b95f03f04d475aa6719d15a636ddf32222d55657
commit: 51a8de6c50bf947c8f534cd73da4c8f0a13e7bed fuse: reject oversized dirents in page cache
date:   3 months ago
config: x86_64-buildonly-randconfig-004-20260721
compiler: clang version 22.1.3 (https://github.com/llvm/llvm-project e9846648fd6183ee6d8cbdb4502213fcf902a211)
reproduce (this is a W=1 build):

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Fixes: 51a8de6c50bf ("fuse: reject oversized dirents in page cache")
| Reported-by: kernel test robot <[email protected]>
| Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/

All error/warnings (new ones prefixed by >>):

>> fs/fuse/readdir.o: warning: objtool: fuse_emit+0x5ca: undefined stack state
>> fs/fuse/readdir.o: error: objtool: fuse_emit+0x5c3: unknown CFA base reg -1

--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki

reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=51a8de6c50bf947c8f534cd73da4c8f0a13e7bed
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 51a8de6c50bf947c8f534cd73da4c8f0a13e7bed

        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests

        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-22 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=x86_64 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-22 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash fs/