diff --git a/net/ipv6/anycast.c b/net/ipv6/anycast.c
index f915c4d..5c41900 100644
--- a/net/ipv6/anycast.c
+++ b/net/ipv6/anycast.c
@@ -504,6 +504,7 @@
 }
 
 static void *ac6_seq_start(struct seq_file *seq, loff_t *pos)
+	__acquires(dev_base_lock)
 {
 	read_lock(&dev_base_lock);
 	return ac6_get_idx(seq, *pos);
@@ -518,6 +519,7 @@
 }
 
 static void ac6_seq_stop(struct seq_file *seq, void *v)
+	__releases(dev_base_lock)
 {
 	struct ac6_iter_state *state = ac6_seq_private(seq);
 	if (likely(state->idev != NULL)) {