diff options
| author | Julia Lawall <julia@diku.dk> | 2007-12-10 17:17:37 -0800 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2007-12-11 02:45:29 -0800 |
| commit | 9b3efc0133a807070dbd21254102995b65969965 (patch) | |
| tree | 86f609aef9c7e2534ccf7f1a1b06d8e29c2ba676 /drivers/s390/net/netiucv.c | |
| parent | 299f590f26da9764f20e905879f0090552ff2e86 (diff) | |
| download | linux-9b3efc0133a807070dbd21254102995b65969965.tar.bz2 | |
[S390]: 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. netif_rx_ni calls netif_rx, so the same problem occurs in
the files below.
I have left the updating of dev->last_rx after the calls to netif_rx_ni
because it seems time dependent, but moved the other field updates before.
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>
Diffstat (limited to 'drivers/s390/net/netiucv.c')
| -rw-r--r-- | drivers/s390/net/netiucv.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/s390/net/netiucv.c b/drivers/s390/net/netiucv.c index 4d18d6419ddc..c7ea9381db9f 100644 --- a/drivers/s390/net/netiucv.c +++ b/drivers/s390/net/netiucv.c @@ -639,14 +639,14 @@ static void netiucv_unpack_skb(struct iucv_connection *conn, skb->dev = pskb->dev; skb->protocol = pskb->protocol; pskb->ip_summed = CHECKSUM_UNNECESSARY; + privptr->stats.rx_packets++; + privptr->stats.rx_bytes += skb->len; /* * Since receiving is always initiated from a tasklet (in iucv.c), * we must use netif_rx_ni() instead of netif_rx() */ netif_rx_ni(skb); dev->last_rx = jiffies; - privptr->stats.rx_packets++; - privptr->stats.rx_bytes += skb->len; skb_pull(pskb, header->next); skb_put(pskb, NETIUCV_HDRLEN); } |