---

yaml
---
r: 159681
b: refs/heads/master
c: 1758c09
h: refs/heads/master
i:
  159679: 2258e45
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 49d4b8ba97034469b941d00d5ca1e3b897394e35
+refs/heads/master: 1758c0947605211ef953cc91d6bbdf847a21b822

trunk/net/can/af_can.c

@@ -651,12 +651,16 @@ static int can_rcv(struct sk_buff *skb, struct net_device *dev,
 	struct can_frame *cf = (struct can_frame *)skb->data;
 	int matches;
 
-	if (dev->type != ARPHRD_CAN || !net_eq(dev_net(dev), &init_net)) {
-		kfree_skb(skb);
-		return 0;
-	}
+	if (!net_eq(dev_net(dev), &init_net))
+		goto drop;
 
-	BUG_ON(skb->len != sizeof(struct can_frame) || cf->can_dlc > 8);
+	if (WARN_ONCE(dev->type != ARPHRD_CAN ||
+		      skb->len != sizeof(struct can_frame) ||
+		      cf->can_dlc > 8,
+		      "PF_CAN: dropped non conform skbuf: "
+		      "dev type %d, len %d, can_dlc %d\n",
+		      dev->type, skb->len, cf->can_dlc))
+		goto drop;
 
 	/* update statistics */
 	can_stats.rx_frames++;
@@ -683,6 +687,10 @@ static int can_rcv(struct sk_buff *skb, struct net_device *dev,
 	}
 
 	return 0;
+
+drop:
+	kfree_skb(skb);
+	return 0;
 }
 
 /*