tree f7d30d04faa899cf0ac3a36f29e0b3b1227837c2
parent 95a02cfd4d33886c166d4a5f309120f8d32ced58
author Julia Lawall <julia@diku.dk> 1197335686 -0800
committer David S. Miller <davem@sunset.davemloft.net> 1197369927 -0800

[UM]: Fix use of skb after netif_rx

Recently, Wang Chen submitted a patch
(d30f53aeb31d453a5230f526bea592af07944564) to move a call to netif_rx(skb)
after a subsequent reference to skb, because netif_rx may call kfree_skb on
its argument.  The same problem occurs in some other drivers as well.

This was found using the following semantic match.
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@@
expression skb, e,e1;
@@

(
 netif_rx(skb);
|
 netif_rx_ni(skb);
)
  ... when != skb = e
(
  skb = e1
|
* skb
)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>