net/core/dev.c: Print lethal dev/protocol errors with KERN_CRIT.

net/core/dev.c

@@ -904,7 +904,7 @@ void dev_queue_xmit_nit(struct sk_buff *skb, struct net_device *dev)
 			if (skb2->nh.raw < skb2->data ||
 			    skb2->nh.raw > skb2->tail) {
 				if (net_ratelimit())
-					printk(KERN_DEBUG "protocol %04x is "
+					printk(KERN_CRIT "protocol %04x is "
 					       "buggy, dev %s\n",
 					       skb2->protocol, dev->name);
 				skb2->nh.raw = skb2->data;
@@ -1062,14 +1062,14 @@ int dev_queue_xmit(struct sk_buff *skb)
 			dev->xmit_lock_owner = -1;
 			spin_unlock_bh(&dev->xmit_lock);
 			if (net_ratelimit())
-				printk(KERN_DEBUG "Virtual device %s asks to "
+				printk(KERN_CRIT "Virtual device %s asks to "
 				       "queue packet!\n", dev->name);
 			goto out_enetdown;
 		} else {
 			/* Recursion is detected! It is possible,
 			 * unfortunately */
 			if (net_ratelimit())
-				printk(KERN_DEBUG "Dead loop on virtual device "
+				printk(KERN_CRIT "Dead loop on virtual device "
 				       "%s, fix it urgently!\n", dev->name);
 		}
 	}