1 files changed, 17 insertions, 13 deletions

diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c
index 54ec163fbafa..bed8155508c8 100644
--- a/net/ipv6/mcast.c
+++ b/net/ipv6/mcast.c
@@ -447,7 +447,8 @@ int ip6_mc_source(int add, int omode, struct sock *sk,
 
 		if (psl)
 			count += psl->sl_max;
-		newpsl = sock_kmalloc(sk, IP6_SFLSIZE(count), GFP_KERNEL);
+		newpsl = sock_kmalloc(sk, struct_size(newpsl, sl_addr, count),
+				      GFP_KERNEL);
 		if (!newpsl) {
 			err = -ENOBUFS;
 			goto done;
@@ -457,7 +458,8 @@ int ip6_mc_source(int add, int omode, struct sock *sk,
 		if (psl) {
 			for (i = 0; i < psl->sl_count; i++)
 				newpsl->sl_addr[i] = psl->sl_addr[i];
-			atomic_sub(IP6_SFLSIZE(psl->sl_max), &sk->sk_omem_alloc);
+			atomic_sub(struct_size(psl, sl_addr, psl->sl_max),
+				   &sk->sk_omem_alloc);
 			kfree_rcu(psl, rcu);
 		}
 		psl = newpsl;
@@ -525,8 +527,9 @@ int ip6_mc_msfilter(struct sock *sk, struct group_filter *gsf,
 		goto done;
 	}
 	if (gsf->gf_numsrc) {
-		newpsl = sock_kmalloc(sk, IP6_SFLSIZE(gsf->gf_numsrc),
-							  GFP_KERNEL);
+		newpsl = sock_kmalloc(sk, struct_size(newpsl, sl_addr,
+						      gsf->gf_numsrc),
+				      GFP_KERNEL);
 		if (!newpsl) {
 			err = -ENOBUFS;
 			goto done;
@@ -543,7 +546,8 @@ int ip6_mc_msfilter(struct sock *sk, struct group_filter *gsf,
 				     newpsl->sl_count, newpsl->sl_addr, 0);
 		if (err) {
 			mutex_unlock(&idev->mc_lock);
-			sock_kfree_s(sk, newpsl, IP6_SFLSIZE(newpsl->sl_max));
+			sock_kfree_s(sk, newpsl, struct_size(newpsl, sl_addr,
+							     newpsl->sl_max));
 			goto done;
 		}
 		mutex_unlock(&idev->mc_lock);
@@ -559,7 +563,8 @@ int ip6_mc_msfilter(struct sock *sk, struct group_filter *gsf,
 	if (psl) {
 		ip6_mc_del_src(idev, group, pmc->sfmode,
 			       psl->sl_count, psl->sl_addr, 0);
-		atomic_sub(IP6_SFLSIZE(psl->sl_max), &sk->sk_omem_alloc);
+		atomic_sub(struct_size(psl, sl_addr, psl->sl_max),
+			   &sk->sk_omem_alloc);
 		kfree_rcu(psl, rcu);
 	} else {
 		ip6_mc_del_src(idev, group, pmc->sfmode, 0, NULL, 0);
@@ -1351,8 +1356,8 @@ static int mld_process_v1(struct inet6_dev *idev, struct mld_msg *mld,
 	return 0;
 }
 
-static int mld_process_v2(struct inet6_dev *idev, struct mld2_query *mld,
-			  unsigned long *max_delay)
+static void mld_process_v2(struct inet6_dev *idev, struct mld2_query *mld,
+			   unsigned long *max_delay)
 {
 	*max_delay = max(msecs_to_jiffies(mldv2_mrc(mld)), 1UL);
 
@@ -1362,7 +1367,7 @@ static int mld_process_v2(struct inet6_dev *idev, struct mld2_query *mld,
 
 	idev->mc_maxdelay = *max_delay;
 
-	return 0;
+	return;
 }
 
 /* called with rcu_read_lock() */
@@ -1449,9 +1454,7 @@ static void __mld_query_work(struct sk_buff *skb)
 
 		mlh2 = (struct mld2_query *)skb_transport_header(skb);
 
-		err = mld_process_v2(idev, mlh2, &max_delay);
-		if (err < 0)
-			goto out;
+		mld_process_v2(idev, mlh2, &max_delay);
 
 		if (group_type == IPV6_ADDR_ANY) { /* general query */
 			if (mlh2->mld2q_nsrcs)
@@ -2607,7 +2610,8 @@ static int ip6_mc_leave_src(struct sock *sk, struct ipv6_mc_socklist *iml,
 		err = ip6_mc_del_src(idev, &iml->addr, iml->sfmode,
 				     psl->sl_count, psl->sl_addr, 0);
 		RCU_INIT_POINTER(iml->sflist, NULL);
-		atomic_sub(IP6_SFLSIZE(psl->sl_max), &sk->sk_omem_alloc);
+		atomic_sub(struct_size(psl, sl_addr, psl->sl_max),
+			   &sk->sk_omem_alloc);
 		kfree_rcu(psl, rcu);
 	}