diff --git a/kernel/audit.c b/kernel/audit.c
index f93c2713017da93b90e5e8d67d029c1b754ffaa0..801c946dd24b639520e6037b63dd96860c2e60d9 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -1200,13 +1200,17 @@ struct audit_buffer *audit_log_start(struct audit_context *ctx, gfp_t gfp_mask,
 static inline int audit_expand(struct audit_buffer *ab, int extra)
 {
 	struct sk_buff *skb = ab->skb;
-	int ret = pskb_expand_head(skb, skb_headroom(skb), extra,
-				   ab->gfp_mask);
+	int oldtail = skb_tailroom(skb);
+	int ret = pskb_expand_head(skb, 0, extra, ab->gfp_mask);
+	int newtail = skb_tailroom(skb);
+
 	if (ret < 0) {
 		audit_log_lost("out of memory in audit_expand");
 		return 0;
 	}
-	return skb_tailroom(skb);
+
+	skb->truesize += newtail - oldtail;
+	return newtail;
 }
 
 /*