diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c
index 3afc32fe9b07..ef1df9d662d6 100644
--- a/net/ipv6/ip6_fib.c
+++ b/net/ipv6/ip6_fib.c
@@ -907,6 +907,7 @@ static void __fib6_drop_pcpu_from(struct fib6_nh *fib6_nh,
 	if (!fib6_nh->rt6i_pcpu)
 		return;
 
+	rcu_read_lock();
 	/* release the reference to this fib entry from
 	 * all of its cached pcpu routes
 	 */
@@ -915,7 +916,9 @@ static void __fib6_drop_pcpu_from(struct fib6_nh *fib6_nh,
 		struct rt6_info *pcpu_rt;
 
 		ppcpu_rt = per_cpu_ptr(fib6_nh->rt6i_pcpu, cpu);
-		pcpu_rt = *ppcpu_rt;
+
+		/* Paired with xchg() in rt6_get_pcpu_route() */
+		pcpu_rt = READ_ONCE(*ppcpu_rt);
 
 		/* only dropping the 'from' reference if the cached route
 		 * is using 'match'. The cached pcpu_rt->from only changes
@@ -929,6 +932,7 @@ static void __fib6_drop_pcpu_from(struct fib6_nh *fib6_nh,
 			fib6_info_release(from);
 		}
 	}
+	rcu_read_unlock();
 }
 
 struct fib6_nh_pcpu_arg {
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 3917755351ad..65772800d0d3 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -1416,6 +1416,7 @@ static struct rt6_info *rt6_get_pcpu_route(const struct fib6_result *res)
 		struct rt6_info *prev, **p;
 
 		p = this_cpu_ptr(res->nh->rt6i_pcpu);
+		/* Paired with READ_ONCE() in __fib6_drop_pcpu_from() */
 		prev = xchg(p, NULL);
 		if (prev) {
 			dst_dev_put(&prev->dst);