diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index a441990fe808..cf541c4502d9 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -3731,11 +3731,9 @@ end:
 static inline int mm_cid_get(struct rq *rq, struct mm_struct *mm)
 {
 	struct mm_cid __percpu *pcpu_cid = mm->pcpu_cid;
-	struct cpumask *cpumask;
 	int cid;
 
 	lockdep_assert_rq_held(rq);
-	cpumask = mm_cidmask(mm);
 	cid = __this_cpu_read(pcpu_cid->cid);
 	if (mm_cid_is_valid(cid)) {
 		mm_cid_snapshot_time(rq, mm);