This patch replaces a skb_pull with a lowpan_fetch_skb with has some
error handling functionaltiy if the skb data isn't enough to run a
skb_pull.
Signed-off-by: Alexander Aring <alex.aring@xxxxxxxxx>
---
net/ieee802154/6lowpan/rx.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/net/ieee802154/6lowpan/rx.c b/net/ieee802154/6lowpan/rx.c
index 4be1d28..22a1db4 100644
--- a/net/ieee802154/6lowpan/rx.c
+++ b/net/ieee802154/6lowpan/rx.c
@@ -108,7 +108,9 @@ static int lowpan_rcv(struct sk_buff *skb, struct net_device *dev,
/* check that it's our buffer */
if (skb->data[0] == LOWPAN_DISPATCH_IPV6) {
/* Pull off the 1-byte of 6lowpan header. */
- skb_pull(skb, 1);
+ if (lowpan_fetch_skb(skb, NULL, 1))
+ goto drop_skb;
+
return lowpan_give_skb_to_devices(skb, NULL);
} else {
switch (skb->data[0] & 0xe0) {
--
2.2.0
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