[NET]: Make second arg to skb_reserved() signed.
Some subsystems, such as PPP, can send negative values
here. It just happened to work correctly on 32-bit with
an unsigned value, but on 64-bit this explodes.
Figured out by Paul Mackerras based upon several PPP crash
reports.
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index e5fd66c..ad7cc22 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -926,7 +926,7 @@
* Increase the headroom of an empty &sk_buff by reducing the tail
* room. This is only allowed for an empty buffer.
*/
-static inline void skb_reserve(struct sk_buff *skb, unsigned int len)
+static inline void skb_reserve(struct sk_buff *skb, int len)
{
skb->data += len;
skb->tail += len;