diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c
index 2859cbac3f26..c949c6a82945 100644
--- a/net/8021q/vlan_dev.c
+++ b/net/8021q/vlan_dev.c
@@ -55,6 +55,11 @@ static int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev,
 	int rc;
 
 	if (!(vlan->flags & VLAN_FLAG_REORDER_HDR)) {
+		unsigned int hlen = READ_ONCE(dev->hard_header_len) +
+				    READ_ONCE(dev->needed_headroom);
+
+		if (skb_cow_head(skb, hlen) < 0)
+			return -ENOMEM;
 		vhdr = skb_push(skb, VLAN_HLEN);
 
 		vlan_tci = vlan->vlan_id;
diff --git a/net/bridge/br_stp_bpdu.c b/net/bridge/br_stp_bpdu.c
index 74ec42ba1e7d..21d092f5acbb 100644
--- a/net/bridge/br_stp_bpdu.c
+++ b/net/bridge/br_stp_bpdu.c
@@ -52,7 +52,10 @@ static void br_send_bpdu(struct net_bridge_port *p,
 			    LLC_SAP_BSPAN, LLC_PDU_CMD);
 	llc_pdu_init_as_ui_cmd(skb);
 
-	llc_mac_hdr_init(skb, p->dev->dev_addr, p->br->group_addr);
+	if (llc_mac_hdr_init(skb, p->dev->dev_addr, p->br->group_addr)) {
+		kfree_skb(skb);
+		return;
+	}
 
 	skb_reset_mac_header(skb);
 
diff --git a/net/llc/llc_c_ac.c b/net/llc/llc_c_ac.c
index 724ecd741d4c..1aa7fe28acdd 100644
--- a/net/llc/llc_c_ac.c
+++ b/net/llc/llc_c_ac.c
@@ -437,7 +437,7 @@ int llc_conn_ac_resend_i_xxx_x_set_0_or_send_rr(struct sock *sk,
 		if (likely(!rc))
 			llc_conn_send_pdu(sk, nskb);
 		else
-			kfree_skb(skb);
+			kfree_skb(nskb);
 	}
 	if (rc) {
 		nr = LLC_I_GET_NR(pdu);
diff --git a/net/llc/llc_s_ac.c b/net/llc/llc_s_ac.c
index 98deee560373..831998211b52 100644
--- a/net/llc/llc_s_ac.c
+++ b/net/llc/llc_s_ac.c
@@ -121,6 +121,8 @@ int llc_sap_action_send_xid_r(struct llc_sap *sap, struct sk_buff *skb)
 	rc = llc_mac_hdr_init(nskb, mac_sa, mac_da);
 	if (likely(!rc))
 		rc = dev_queue_xmit(nskb);
+	else
+		kfree_skb(nskb);
 out:
 	return rc;
 }
@@ -170,6 +172,8 @@ int llc_sap_action_send_test_r(struct llc_sap *sap, struct sk_buff *skb)
 	rc = llc_mac_hdr_init(nskb, mac_sa, mac_da);
 	if (likely(!rc))
 		rc = dev_queue_xmit(nskb);
+	else
+		kfree_skb(nskb);
 out:
 	return rc;
 }
diff --git a/net/sched/sch_teql.c b/net/sched/sch_teql.c
index 9e52afc2d980..409ce50cc0db 100644
--- a/net/sched/sch_teql.c
+++ b/net/sched/sch_teql.c
@@ -265,14 +265,11 @@ __teql_resolve(struct sk_buff *skb, struct sk_buff *skb_res,
 	}
 
 	if (neigh_event_send(n, skb_res) == 0) {
-		int err;
 		char haddr[MAX_ADDR_LEN];
 
 		neigh_ha_snapshot(haddr, n, dev);
-		err = dev_hard_header(skb, dev, ntohs(skb_protocol(skb, false)),
-				      haddr, NULL, skb->len);
-
-		if (err < 0)
+		if (dev_hard_header(skb, dev, ntohs(skb_protocol(skb, false)),
+				    haddr, NULL, skb->len) < 0)
 			err = -EINVAL;
 	} else {
 		err = (skb_res == NULL) ? -EAGAIN : 1;