kernel/cgroup/cpuset.c:3032:9: error: use of undeclared label 'out_unlock_reset'

[kernel test robot <lkp@intel.com>]

tree:   https://github.com/intel-lab-lkp/linux/commits/Aaron-Tomlin/cgroup-cpuset-Fix-deadline-bandwidth-leak-in-cpuset_can_attach/20260513-233840
head:   6b7a0366d38d3efa80d721b02d588f3f519aa8b3
commit: 6c37dfa9b4198303c230c525e0796e883dde1624 cgroup/cpuset: Fix deadline bandwidth leak in cpuset_can_attach()
date:   9 hours ago
config: x86_64-kexec (https://download.01.org/0day-ci/archive/20260514/202605140212.cspkpyDl-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260514/202605140212.cspkpyDl-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
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202605140212.cspkpyDl-lkp@intel.com/

All errors (new ones prefixed by >>):

>> kernel/cgroup/cpuset.c:3032:9: error: use of undeclared label 'out_unlock_reset'
    3032 |                         goto out_unlock_reset;
         |                              ^
   kernel/cgroup/cpuset.c:3604:1: warning: unused label 'out_unlock_reset' [-Wunused-label]
    3604 | out_unlock_reset:
         | ^~~~~~~~~~~~~~~~~
   1 warning and 1 error generated.


vim +/out_unlock_reset +3032 kernel/cgroup/cpuset.c

  2988	
  2989	/* Called by cgroups to determine if a cpuset is usable; cpuset_mutex held */
  2990	static int cpuset_can_attach(struct cgroup_taskset *tset)
  2991	{
  2992		struct cgroup_subsys_state *css;
  2993		struct cpuset *cs, *oldcs;
  2994		struct task_struct *task;
  2995		bool setsched_check;
  2996		int cpu, ret;
  2997	
  2998		/* used later by cpuset_attach() */
  2999		cpuset_attach_old_cs = task_cs(cgroup_taskset_first(tset, &css));
  3000		oldcs = cpuset_attach_old_cs;
  3001		cs = css_cs(css);
  3002	
  3003		mutex_lock(&cpuset_mutex);
  3004	
  3005		/* Check to see if task is allowed in the cpuset */
  3006		ret = cpuset_can_attach_check(cs);
  3007		if (ret)
  3008			goto out_unlock;
  3009	
  3010		/*
  3011		 * Skip rights over task setsched check in v2 when nothing changes,
  3012		 * migration permission derives from hierarchy ownership in
  3013		 * cgroup_procs_write_permission()).
  3014		 */
  3015		setsched_check = !cpuset_v2() ||
  3016			!cpumask_equal(cs->effective_cpus, oldcs->effective_cpus) ||
  3017			!nodes_equal(cs->effective_mems, oldcs->effective_mems);
  3018	
  3019		/*
  3020		 * A v1 cpuset with tasks will have no CPU left only when CPU hotplug
  3021		 * brings the last online CPU offline as users are not allowed to empty
  3022		 * cpuset.cpus when there are active tasks inside. When that happens,
  3023		 * we should allow tasks to migrate out without security check to make
  3024		 * sure they will be able to run after migration.
  3025		 */
  3026		if (!is_in_v2_mode() && cpumask_empty(oldcs->effective_cpus))
  3027			setsched_check = false;
  3028	
  3029		cgroup_taskset_for_each(task, css, tset) {
  3030			ret = task_can_attach(task);
  3031			if (ret)
> 3032				goto out_unlock_reset;
  3033	
  3034			if (setsched_check) {
  3035				ret = security_task_setscheduler(task);
  3036				if (ret)
  3037					goto out_unlock_reset;
  3038			}
  3039	
  3040			if (dl_task(task)) {
  3041				/*
  3042				 * Count all migrating DL tasks for cpuset task accounting.
  3043				 * Only tasks that need a root-domain bandwidth move
  3044				 * contribute to sum_migrate_dl_bw.
  3045				 */
  3046				cs->nr_migrate_dl_tasks++;
  3047				if (dl_task_needs_bw_move(task, cs->effective_cpus))
  3048					cs->sum_migrate_dl_bw += task->dl.dl_bw;
  3049			}
  3050		}
  3051	
  3052		if (!cs->sum_migrate_dl_bw)
  3053			goto out_success;
  3054	
  3055		cpu = cpumask_any_and(cpu_active_mask, cs->effective_cpus);
  3056		if (unlikely(cpu >= nr_cpu_ids)) {
  3057			ret = -EINVAL;
  3058			goto out_unlock;
  3059		}
  3060	
  3061		ret = dl_bw_alloc(cpu, cs->sum_migrate_dl_bw);
  3062		if (ret)
  3063			goto out_unlock;
  3064	
  3065		cs->dl_bw_cpu = cpu;
  3066	
  3067	out_success:
  3068		/*
  3069		 * Mark attach is in progress.  This makes validate_change() fail
  3070		 * changes which zero cpus/mems_allowed.
  3071		 */
  3072		cs->attach_in_progress++;
  3073	
  3074	out_unlock:
  3075		if (ret)
  3076			reset_migrate_dl_data(cs);
  3077		mutex_unlock(&cpuset_mutex);
  3078		return ret;
  3079	}
  3080	

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