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wan/hdlc_x25.c: fix a NULL dereference
WAN: fixes a NULL dereference in hdlc_x25. Reported-by: Adrian Bunk <bunk@kernel.org>. Signed-off-by: Krzysztof Halasa <khc@pm.waw.pl> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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2d1ea19da0
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1 changed files with 5 additions and 3 deletions
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@ -163,15 +163,17 @@ static void x25_close(struct net_device *dev)
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static int x25_rx(struct sk_buff *skb)
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{
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struct net_device *dev = skb->dev;
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if ((skb = skb_share_check(skb, GFP_ATOMIC)) == NULL) {
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skb->dev->stats.rx_dropped++;
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dev->stats.rx_dropped++;
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return NET_RX_DROP;
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}
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if (lapb_data_received(skb->dev, skb) == LAPB_OK)
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if (lapb_data_received(dev, skb) == LAPB_OK)
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return NET_RX_SUCCESS;
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skb->dev->stats.rx_errors++;
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dev->stats.rx_errors++;
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dev_kfree_skb_any(skb);
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return NET_RX_DROP;
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}
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