diff options
| author | Daniel Schwierzeck <daniel.schwierzeck@googlemail.com> | 2011-08-19 12:04:20 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-10-03 11:39:57 -0700 |
| commit | bdfd59ed66725e66155f011023771bdc15b69c7f (patch) | |
| tree | 31b0cf7e95dfb6873b8518eea10649a19e87fc91 | |
| parent | e4dd9ac202da43712e1725087a7f5c656b79fb51 (diff) | |
atm: br2684: Fix oops due to skb->dev being NULL
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.schwierzeck@googlemail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | net/atm/br2684.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/net/atm/br2684.c b/net/atm/br2684.c index 52cfd0c3ea71..d07223c834af 100644 --- a/net/atm/br2684.c +++ b/net/atm/br2684.c @@ -558,12 +558,13 @@ 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); } /* initialize netdev carrier state */ |