diff options
| author | David S. Miller <davem@davemloft.net> | 2010-12-08 18:42:23 -0800 |
|---|---|---|
| committer | AK <andi@firstfloor.org> | 2011-02-06 11:03:38 -0800 |
| commit | f59cbe486092c277cb7c00f048ed6701ebf6cdfa (patch) | |
| tree | 9957592c376024abf3fd228b246d9f800e6bc317 /net | |
| parent | 2a0e5f9e12c4a9ab6ff63b2b6991232a4cb5a910 (diff) | |
econet: Fix crash in aun_incoming().
[ Upstream commit 4e085e76cbe558b79b54cbab772f61185879bc64 ]
Unconditional use of skb->dev won't work here,
try to fetch the econet device via skb_dst()->dev
instead.
Suggested by Eric Dumazet.
Reported-by: Nelson Elhage <nelhage@ksplice.com>
Tested-by: Nelson Elhage <nelhage@ksplice.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/econet/af_econet.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/net/econet/af_econet.c b/net/econet/af_econet.c index e40e6b02350..c8d356c0f81 100644 --- a/net/econet/af_econet.c +++ b/net/econet/af_econet.c @@ -849,7 +849,11 @@ static void aun_incoming(struct sk_buff *skb, struct aunhdr *ah, size_t len) unsigned char stn = ntohl(ip->saddr) & 0xff; struct sock *sk; struct sk_buff *newskb; - struct ec_device *edev = skb->dev->ec_ptr; + struct dst_entry *dst = skb_dst(skb); + struct ec_device *edev = NULL; + + if (dst) + edev = dst->dev->ec_ptr; if (! edev) goto bad; |