Re: [PATCH 2/3] Fix use of skb after netif_rx
From: Julia Lawall <[EMAIL PROTECTED]> Date: Sun, 9 Dec 2007 21:03:55 +0100 (CET) > From: Julia Lawall <[EMAIL PROTECTED]> > > 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/) ... > Signed-off-by: Julia Lawall <[EMAIL PROTECTED]> Also applied, thanks. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [PATCH 2/3] Fix use of skb after netif_rx
From: Julia Lawall [EMAIL PROTECTED] Date: Sun, 9 Dec 2007 21:03:55 +0100 (CET) From: Julia Lawall [EMAIL PROTECTED] 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/) ... Signed-off-by: Julia Lawall [EMAIL PROTECTED] Also applied, thanks. -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
[PATCH 2/3] Fix use of skb after netif_rx
From: Julia Lawall <[EMAIL PROTECTED]>
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/)
//
@@
expression skb, e,e1;
@@
(
netif_rx(skb);
|
netif_rx_ni(skb);
)
... when != skb = e
(
skb = e1
|
* skb
)
//
Signed-off-by: Julia Lawall <[EMAIL PROTECTED]>
---
diff a/arch/xtensa/platform-iss/network.c b/arch/xtensa/platform-iss/network.c
--- a/arch/xtensa/platform-iss/network.c2007-10-22 16:31:51.0
+0200
+++ b/arch/xtensa/platform-iss/network.c2007-12-05 19:01:34.0
+0100
@@ -393,11 +393,11 @@ static int iss_net_rx(struct net_device
if (pkt_len > 0) {
skb_trim(skb, pkt_len);
skb->protocol = lp->tp.protocol(skb);
- // netif_rx(skb);
- netif_rx_ni(skb);
lp->stats.rx_bytes += skb->len;
lp->stats.rx_packets++;
+ // netif_rx(skb);
+ netif_rx_ni(skb);
return pkt_len;
}
kfree_skb(skb);
--
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[PATCH 2/3] Fix use of skb after netif_rx
From: Julia Lawall [EMAIL PROTECTED]
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 [EMAIL PROTECTED]
---
diff a/arch/xtensa/platform-iss/network.c b/arch/xtensa/platform-iss/network.c
--- a/arch/xtensa/platform-iss/network.c2007-10-22 16:31:51.0
+0200
+++ b/arch/xtensa/platform-iss/network.c2007-12-05 19:01:34.0
+0100
@@ -393,11 +393,11 @@ static int iss_net_rx(struct net_device
if (pkt_len 0) {
skb_trim(skb, pkt_len);
skb-protocol = lp-tp.protocol(skb);
- // netif_rx(skb);
- netif_rx_ni(skb);
lp-stats.rx_bytes += skb-len;
lp-stats.rx_packets++;
+ // netif_rx(skb);
+ netif_rx_ni(skb);
return pkt_len;
}
kfree_skb(skb);
--
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