From: Daniel Schwierzeck <daniel.schwierz...@googlemail.com>
-------------------
This is a commit scheduled for the next v2.6.34 longterm release.
http://git.kernel.org/?p=linux/kernel/git/paulg/longterm-queue-2.6.34.git
If you see a problem with using this for longterm, please comment.
-------------------
commit fbe5e29ec1886967255e76946aaf537b8cc9b81e upstream.
This oops have been already fixed with commit
27141666b69f535a4d63d7bc6d9e84ee5032f82a
atm: [br2684] Fix oops due to skb->dev being NULL
It happens that if a packet arrives in a VC between the call to open it on
the hardware and the call to change the backend to br2684, br2684_regvcc
processes the packet and oopses dereferencing skb->dev because it is
NULL before the call to br2684_push().
but have been introduced again with commit
b6211ae7f2e56837c6a4849316396d1535606e90
atm: Use SKB queue and list helpers instead of doing it by-hand.
Signed-off-by: Daniel Schwierzeck <daniel.schwierz...@googlemail.com>
Signed-off-by: David S. Miller <da...@davemloft.net>
Signed-off-by: Paul Gortmaker <paul.gortma...@windriver.com>
---
net/atm/br2684.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/net/atm/br2684.c b/net/atm/br2684.c
index f3bae14..e9b5677 100644
--- a/net/atm/br2684.c
+++ b/net/atm/br2684.c
@@ -522,12 +522,13 @@ static int br2684_regvcc(struct atm_vcc *atmvcc, void
__user * arg)
spin_unlock_irqrestore(&rq->lock, flags);
skb_queue_walk_safe(&queue, skb, tmp) {
- struct net_device *dev = skb->dev;
+ struct net_device *dev;
+
+ br2684_push(atmvcc, skb);
+ dev = skb->dev;
dev->stats.rx_bytes -= skb->len;
dev->stats.rx_packets--;
-
- br2684_push(atmvcc, skb);
}
__module_get(THIS_MODULE);
return 0;
--
1.7.12.rc2
--
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