tgupdate: merge t/DO-NOT-MERGE-mptcp-use-kmalloc-on-kasan-build base into t/DO-NOT-MERGE-mptcp-use-kmalloc-on-kasan-build

Author: matttbe

net/llc/llc_s_ac.c

@@ -24,7 +24,7 @@
 #include <net/llc_s_ac.h>
 #include <net/llc_s_ev.h>
 #include <net/llc_sap.h>
-
+#include <net/sock.h>
 
 /**
  *	llc_sap_action_unitdata_ind - forward UI PDU to network layer
@@ -40,6 +40,26 @@ int llc_sap_action_unitdata_ind(struct llc_sap *sap, struct sk_buff *skb)
 	return 0;
 }
 
+static int llc_prepare_and_xmit(struct sk_buff *skb)
+{
+	struct llc_sap_state_ev *ev = llc_sap_ev(skb);
+	struct sk_buff *nskb;
+	int rc;
+
+	rc = llc_mac_hdr_init(skb, ev->saddr.mac, ev->daddr.mac);
+	if (rc)
+		return rc;
+
+	nskb = skb_clone(skb, GFP_ATOMIC);
+	if (!nskb)
+		return -ENOMEM;
+
+	if (skb->sk)
+		skb_set_owner_w(nskb, skb->sk);
+
+	return dev_queue_xmit(nskb);
+}
+
 /**
  *	llc_sap_action_send_ui - sends UI PDU resp to UNITDATA REQ to MAC layer
  *	@sap: SAP
@@ -52,17 +72,12 @@ int llc_sap_action_unitdata_ind(struct llc_sap *sap, struct sk_buff *skb)
 int llc_sap_action_send_ui(struct llc_sap *sap, struct sk_buff *skb)
 {
 	struct llc_sap_state_ev *ev = llc_sap_ev(skb);
-	int rc;
 
 	llc_pdu_header_init(skb, LLC_PDU_TYPE_U, ev->saddr.lsap,
 			    ev->daddr.lsap, LLC_PDU_CMD);
 	llc_pdu_init_as_ui_cmd(skb);
-	rc = llc_mac_hdr_init(skb, ev->saddr.mac, ev->daddr.mac);
-	if (likely(!rc)) {
-		skb_get(skb);
-		rc = dev_queue_xmit(skb);
-	}
-	return rc;
+
+	return llc_prepare_and_xmit(skb);
 }
 
 /**
@@ -77,17 +92,12 @@ int llc_sap_action_send_ui(struct llc_sap *sap, struct sk_buff *skb)
 int llc_sap_action_send_xid_c(struct llc_sap *sap, struct sk_buff *skb)
 {
 	struct llc_sap_state_ev *ev = llc_sap_ev(skb);
-	int rc;
 
 	llc_pdu_header_init(skb, LLC_PDU_TYPE_U_XID, ev->saddr.lsap,
 			    ev->daddr.lsap, LLC_PDU_CMD);
 	llc_pdu_init_as_xid_cmd(skb, LLC_XID_NULL_CLASS_2, 0);
-	rc = llc_mac_hdr_init(skb, ev->saddr.mac, ev->daddr.mac);
-	if (likely(!rc)) {
-		skb_get(skb);
-		rc = dev_queue_xmit(skb);
-	}
-	return rc;
+
+	return llc_prepare_and_xmit(skb);
 }
 
 /**
@@ -133,17 +143,12 @@ int llc_sap_action_send_xid_r(struct llc_sap *sap, struct sk_buff *skb)
 int llc_sap_action_send_test_c(struct llc_sap *sap, struct sk_buff *skb)
 {
 	struct llc_sap_state_ev *ev = llc_sap_ev(skb);
-	int rc;
 
 	llc_pdu_header_init(skb, LLC_PDU_TYPE_U, ev->saddr.lsap,
 			    ev->daddr.lsap, LLC_PDU_CMD);
 	llc_pdu_init_as_test_cmd(skb);
-	rc = llc_mac_hdr_init(skb, ev->saddr.mac, ev->daddr.mac);
-	if (likely(!rc)) {
-		skb_get(skb);
-		rc = dev_queue_xmit(skb);
-	}
-	return rc;
+
+	return llc_prepare_and_xmit(skb);
 }
 
 int llc_sap_action_send_test_r(struct llc_sap *sap, struct sk_buff *skb)