diff --git a/net/ipv4/inet_diag.c b/net/ipv4/inet_diag.c
index a247f85571c4b5b1ceac41538ab4ccdc73954004..bd3f661803a7835ed87c835cbafd53aa054fbd99 100644
--- a/net/ipv4/inet_diag.c
+++ b/net/ipv4/inet_diag.c
@@ -355,9 +355,12 @@ static int bitstring_match(const __be32 *a1, const __be32 *a2, int bits)
 }
 
 
-static int inet_diag_bc_run(const void *bc, int len,
-			    const struct inet_diag_entry *entry)
+static int inet_diag_bc_run(const struct nlattr *_bc,
+		const struct inet_diag_entry *entry)
 {
+	const void *bc = nla_data(_bc);
+	int len = nla_len(_bc);
+
 	while (len > 0) {
 		int yes = 1;
 		const struct inet_diag_bc_op *op = bc;
@@ -512,7 +515,7 @@ static int inet_csk_diag_dump(struct sock *sk,
 		entry.dport = ntohs(inet->inet_dport);
 		entry.userlocks = sk->sk_userlocks;
 
-		if (!inet_diag_bc_run(nla_data(bc), nla_len(bc), &entry))
+		if (!inet_diag_bc_run(bc, &entry))
 			return 0;
 	}
 
@@ -547,7 +550,7 @@ static int inet_twsk_diag_dump(struct inet_timewait_sock *tw,
 		entry.dport = ntohs(tw->tw_dport);
 		entry.userlocks = 0;
 
-		if (!inet_diag_bc_run(nla_data(bc), nla_len(bc), &entry))
+		if (!inet_diag_bc_run(bc, &entry))
 			return 0;
 	}
 
@@ -668,8 +671,7 @@ static int inet_diag_dump_reqs(struct sk_buff *skb, struct sock *sk,
 					&ireq->rmt_addr;
 				entry.dport = ntohs(ireq->rmt_port);
 
-				if (!inet_diag_bc_run(nla_data(bc),
-						      nla_len(bc), &entry))
+				if (!inet_diag_bc_run(bc, &entry))
 					continue;
 			}