[tip:master 18/29] vmlinux.o: warning: objtool: do_user_addr_fault+0xac: unreachable instruction

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git master
head:   aea1ae1ab93e60b266453b008238fbc5f0c65865
commit: ad0952ac67d1bd2c1e0c25ce150b981f02cc23a3 [18/29] Merge objtool/core into tip/master
config: x86_64-randconfig-a002-20220502 (https://download.01.org/0day-ci/archive/20220502/202205021646.AwOPfinU-lkp@xxxxxxxxx/config)
compiler: gcc-11 (Debian 11.2.0-20) 11.2.0
reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=ad0952ac67d1bd2c1e0c25ce150b981f02cc23a3
        git remote add tip https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git
        git fetch --no-tags tip master
        git checkout ad0952ac67d1bd2c1e0c25ce150b981f02cc23a3
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make 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@xxxxxxxxx>

All warnings (new ones prefixed by >>):

>> vmlinux.o: warning: objtool: do_user_addr_fault+0xac: unreachable instruction

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