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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().

Signed-off-by: Jorge Boncompte [DTI2] <jorge@dti2.net>
Signed-off-by: Chas Williams <chas@cmf.nrl.navy.mil>
This commit is contained in:
Jorge Boncompte [DTI2] 2008-06-16 17:15:33 -07:00 committed by David S. Miller
parent a9d246dbb0
commit 27141666b6
1 changed files with 1 additions and 1 deletions
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2
net/atm/br2684.c
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@ -518,9 +518,9 @@ static int br2684_regvcc(struct atm_vcc *atmvcc, void __user * arg)
struct sk_buff *next = skb->next;
skb->next = skb->prev = NULL;
br2684_push(atmvcc, skb);
BRPRIV(skb->dev)->stats.rx_bytes -= skb->len;
BRPRIV(skb->dev)->stats.rx_packets--;
br2684_push(atmvcc, skb);
skb = next;
}