kernel/cgroup/cgroup.o: warning: objtool: cgroup_wq_init+0xe8: unreachable instruction

kernel/cgroup/cgroup.o: warning: objtool: cgroup_wq_init+0xe8: unreachable instruction

[kernel test robot]

:::::: 
:::::: Manual check reason: "loongarch: unreachable instruction"
:::::: 

BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
CC: linux-kernel@vger.kernel.org
TO: Chen Ridong <chenridong@huawei.com>
CC: Tejun Heo <tj@kernel.org>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   8cd9520d35a6c38db6567e97dd93b1f11f185dc6
commit: 79f919a89c9d06816dbdbbd168fa41d27411a7f9 cgroup: split cgroup_destroy_wq into 3 workqueues
date:   10 months ago
:::::: branch date: 5 hours ago
:::::: commit date: 10 months ago
config: loongarch-randconfig-r064-20260608 (https://download.01.org/0day-ci/archive/20260615/202606150338.OCsBCglV-lkp@intel.com/config)
compiler: loongarch64-linux-gcc (GCC) 16.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260615/202606150338.OCsBCglV-lkp@intel.com/reproduce)

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: 79f919a89c9d ("cgroup: split cgroup_destroy_wq into 3 workqueues")
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/r/202606150338.OCsBCglV-lkp@intel.com/

All warnings (new ones prefixed by >>):

   kernel/cgroup/cgroup.o: warning: objtool: compare_css_sets+0x1b4: unreachable instruction
   kernel/cgroup/cgroup.o: warning: objtool: cgroup_setup_root+0x5ec: unreachable instruction
   kernel/cgroup/cgroup.o: warning: objtool: cgroup_destroy_root+0x11c: unreachable instruction
>> kernel/cgroup/cgroup.o: warning: objtool: cgroup_wq_init+0xe8: unreachable instruction
   kernel/cgroup/cgroup.o: warning: objtool: cgroup_init_subsys+0x240: unreachable instruction
   kernel/cgroup/cgroup.o: warning: objtool: cgroup_init+0xd0: unreachable instruction

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