diff --git a/kernel/sched.c b/kernel/sched.c
index 19b3c5d..bfd3128 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -2564,7 +2564,15 @@ void sched_fork(struct task_struct *p, int clone_flags)
 	if (p->sched_class->task_fork)
 		p->sched_class->task_fork(p);
 
+	/*
+	 * We're not in the pid-hash yet so no cgroup attach races, and the
+	 * cgroup is pinned by the parent running this.
+	 *
+	 * Silence PROVE_RCU.
+	 */
+	rcu_read_lock();
 	set_task_cpu(p, cpu);
+	rcu_read_unlock();
 
 #if defined(CONFIG_SCHEDSTATS) || defined(CONFIG_TASK_DELAY_ACCT)
 	if (likely(sched_info_on()))