Merge tag 'wq-for-5.19-rc8-fixes' of git://git.kernel.org/pub/scm/lin…

…ux/kernel/git/tj/wq

Pull workqueue fix from Tejun Heo:
 "Just one commit to suppress a spurious warning added during the 5.19
  cycle"

* tag 'wq-for-5.19-rc8-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
  workqueue: Avoid a false warning in unbind_workers()

kernel/workqueue.c

@@ -5001,7 +5001,10 @@ static void unbind_workers(int cpu)
 
 		for_each_pool_worker(worker, pool) {
 			kthread_set_per_cpu(worker->task, -1);
-			WARN_ON_ONCE(set_cpus_allowed_ptr(worker->task, wq_unbound_cpumask) < 0);
+			if (cpumask_intersects(wq_unbound_cpumask, cpu_active_mask))
+				WARN_ON_ONCE(set_cpus_allowed_ptr(worker->task, wq_unbound_cpumask) < 0);
+			else
+				WARN_ON_ONCE(set_cpus_allowed_ptr(worker->task, cpu_possible_mask) < 0);
 		}
 
 		mutex_unlock(&wq_pool_attach_mutex);