3 files changed, 22 insertions, 9 deletions

diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c
index 85033344aed2..bb10c077a01a 100644
--- a/net/netfilter/nf_conntrack_netlink.c
+++ b/net/netfilter/nf_conntrack_netlink.c
@@ -1367,12 +1367,15 @@ ctnetlink_create_conntrack(struct net *net, u16 zone,
 						    nf_ct_protonum(ct));
 		if (helper == NULL) {
 			rcu_read_unlock();
+			spin_unlock_bh(&nf_conntrack_lock);
 #ifdef CONFIG_MODULES
 			if (request_module("nfct-helper-%s", helpname) < 0) {
+				spin_lock_bh(&nf_conntrack_lock);
 				err = -EOPNOTSUPP;
 				goto err1;
 			}
 
+			spin_lock_bh(&nf_conntrack_lock);
 			rcu_read_lock();
 			helper = __nf_conntrack_helper_find(helpname,
 							    nf_ct_l3num(ct),
@@ -1880,25 +1883,30 @@ ctnetlink_get_expect(struct sock *ctnl, struct sk_buff *skb,
 
 	err = -ENOMEM;
 	skb2 = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
-	if (skb2 == NULL)
+	if (skb2 == NULL) {
+		nf_ct_expect_put(exp);
 		goto out;
+	}
 
 	rcu_read_lock();
 	err = ctnetlink_exp_fill_info(skb2, NETLINK_CB(skb).pid,
 				      nlh->nlmsg_seq, IPCTNL_MSG_EXP_NEW, exp);
 	rcu_read_unlock();
+	nf_ct_expect_put(exp);
 	if (err <= 0)
 		goto free;
 
-	nf_ct_expect_put(exp);
+	err = netlink_unicast(ctnl, skb2, NETLINK_CB(skb).pid, MSG_DONTWAIT);
+	if (err < 0)
+		goto out;
 
-	return netlink_unicast(ctnl, skb2, NETLINK_CB(skb).pid, MSG_DONTWAIT);
+	return 0;
 
 free:
 	kfree_skb(skb2);
 out:
-	nf_ct_expect_put(exp);
-	return err;
+	/* this avoids a loop in nfnetlink. */
+	return err == -EAGAIN ? -ENOBUFS : err;
 }
 
 static int
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index e56ca75e3f43..2dbb32b988c4 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -2453,8 +2453,12 @@ static int packet_do_bind(struct sock *sk, struct net_device *dev, __be16 protoc
 {
 	struct packet_sock *po = pkt_sk(sk);
 
-	if (po->fanout)
+	if (po->fanout) {
+		if (dev)
+			dev_put(dev);
+
 		return -EINVAL;
+	}
 
 	lock_sock(sk);
 
diff --git a/net/sched/sch_netem.c b/net/sched/sch_netem.c
index ffcaa5975947..a92c1b3dab83 100644
--- a/net/sched/sch_netem.c
+++ b/net/sched/sch_netem.c
@@ -532,7 +532,7 @@ static int get_dist_table(struct Qdisc *sch, const struct nlattr *attr)
 		return -EINVAL;
 
 	s = sizeof(struct disttable) + n * sizeof(s16);
-	d = kmalloc(s, GFP_KERNEL);
+	d = kmalloc(s, GFP_KERNEL | __GFP_NOWARN);
 	if (!d)
 		d = vmalloc(s);
 	if (!d)
@@ -545,9 +545,10 @@ static int get_dist_table(struct Qdisc *sch, const struct nlattr *attr)
 	root_lock = qdisc_root_sleeping_lock(sch);
 
 	spin_lock_bh(root_lock);
-	dist_free(q->delay_dist);
-	q->delay_dist = d;
+	swap(q->delay_dist, d);
 	spin_unlock_bh(root_lock);
+
+	dist_free(d);
 	return 0;
 }