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| author | Eric Dumazet <edumazet@google.com> | 2013-01-10 08:32:45 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-01-10 14:11:46 -0800 |
| commit | 2efd32ee1b60b0b31404ca47c1ce70e5a5d24ebc (patch) | |
| tree | 53ac968a74d97fb6b02ce1bd7c860fdd4bc378a0 | |
| parent | 1f1e4958069c6e7ff3f8b73148d14c08d015f0bf (diff) | |
| download | op-kernel-dev-2efd32ee1b60b0b31404ca47c1ce70e5a5d24ebc.zip op-kernel-dev-2efd32ee1b60b0b31404ca47c1ce70e5a5d24ebc.tar.gz | |
veth: fix a NULL deref in netif_carrier_off
In commit d0e2c55e7c94 (veth: avoid a NULL deref in veth_stats_one)
we now clear the peer pointers in veth_dellink()
veth_close() must therefore make sure the peer pointer is set.
Reported-by: Tom Parkin <tom.parkin@gmail.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/veth.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/net/veth.c b/drivers/net/veth.c index 0f71a4f..e1da42a 100644 --- a/drivers/net/veth.c +++ b/drivers/net/veth.c @@ -206,9 +206,11 @@ static int veth_open(struct net_device *dev) static int veth_close(struct net_device *dev) { struct veth_priv *priv = netdev_priv(dev); + struct net_device *peer = rtnl_dereference(priv->peer); netif_carrier_off(dev); - netif_carrier_off(rtnl_dereference(priv->peer)); + if (peer) + netif_carrier_off(peer); return 0; } |
