[linux-stable-rc:queue/5.10 9981/9999] arch/x86/kernel/head64.o: warning: objtool: __startup_64() falls through to next function startup_64_setup_env()

[linux-stable-rc:queue/5.10 9981/9999] arch/x86/kernel/head64.o: warning: objtool: __startup_64() falls through to next function startup_64_setup_env()

[kernel test robot]

BCC: lkp@intel.com
CC: linux-kernel@vger.kernel.org
TO: Kees Cook <keescook@chromium.org>
CC: "Greg Kroah-Hartman" <gregkh@linuxfoundation.org>
CC: Marco Elver <elver@google.com>
CC: Andrew Morton <akpm@linux-foundation.org>
CC: Linux Memory Management List <linux-mm@kvack.org>
CC: Tadeusz Struk <tadeusz.struk@linaro.org>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git queue/5.10
head:   fd52dd72478ce6c2ec00847b959b153328b5faaa
commit: 58823a9b097cf36dd59c4d463396e15a5ec4efb7 [9981/9999] ubsan: remove CONFIG_UBSAN_OBJECT_SIZE
config: x86_64-randconfig-a014 (https://download.01.org/0day-ci/archive/20220416/202204160317.oVcHACQX-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 6b7e6ea489f6dd45a9b0da9ac20871560917b9b0)
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/stable/linux-stable-rc.git/commit/?id=58823a9b097cf36dd59c4d463396e15a5ec4efb7
        git remote add linux-stable-rc https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
        git fetch --no-tags linux-stable-rc queue/5.10
        git checkout 58823a9b097cf36dd59c4d463396e15a5ec4efb7
        # 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 arch/x86/ drivers/video/ sound/soc/

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 >>):

>> arch/x86/kernel/head64.o: warning: objtool: __startup_64() falls through to next function startup_64_setup_env()
--
>> drivers/video/fbdev/smscufx.o: warning: objtool: ufx_ops_write() falls through to next function ufx_ops_setcolreg()
--
>> sound/soc/codecs/wm8978.o: warning: objtool: wm8978_configure_pll() falls through to next function params_width()

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp