drivers/net: ks8842 Fix crash on received packet when in PIO mode.

This patch fixes a driver crash during packet reception due to not enough
bytes allocated in the skb. Since the loop reads out 4 bytes at a time, we
need to allow for up to 3 bytes of slack space.

Signed-off-by: Dennis Aberilla <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

drivers/net/ks8842.c

···
 
 	/* check the status */
 	if ((status & RXSR_VALID) && !(status & RXSR_ERROR)) {
-		struct sk_buff *skb = netdev_alloc_skb_ip_align(netdev, len);
+		struct sk_buff *skb = netdev_alloc_skb_ip_align(netdev, len + 3);
 
 		if (skb) {