diff options
| author | David S. Miller <davem@davemloft.net> | 2012-07-05 21:08:05 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-07-05 21:08:05 -0700 |
| commit | 700db99d0140e9da2a31e08ebd3e1b121691aa26 (patch) | |
| tree | d1353dea09af83c555b2218863084ee578236b90 | |
| parent | a2de86f63cfc92f7aaf11e7b9d9f2150946a1622 (diff) | |
| download | linux-700db99d0140e9da2a31e08ebd3e1b121691aa26.tar.bz2 | |
ipoib: Need to do dst_neigh_lookup_skb() outside of priv->lock.
Otherwise local_bh_enable() complains.
Reported-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/infiniband/ulp/ipoib/ipoib_multicast.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c index fbb95ee538b2..7cecb16d3d48 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c +++ b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c @@ -658,9 +658,15 @@ static int ipoib_mcast_leave(struct net_device *dev, struct ipoib_mcast *mcast) void ipoib_mcast_send(struct net_device *dev, void *mgid, struct sk_buff *skb) { struct ipoib_dev_priv *priv = netdev_priv(dev); + struct dst_entry *dst = skb_dst(skb); struct ipoib_mcast *mcast; + struct neighbour *n; unsigned long flags; + n = NULL; + if (dst) + n = dst_neigh_lookup_skb(dst, skb); + spin_lock_irqsave(&priv->lock, flags); if (!test_bit(IPOIB_FLAG_OPER_UP, &priv->flags) || @@ -715,12 +721,6 @@ void ipoib_mcast_send(struct net_device *dev, void *mgid, struct sk_buff *skb) out: if (mcast && mcast->ah) { - struct dst_entry *dst = skb_dst(skb); - struct neighbour *n = NULL; - - rcu_read_lock(); - if (dst) - n = dst_neigh_lookup_skb(dst, skb); if (n) { if (!*to_ipoib_neigh(n)) { struct ipoib_neigh *neigh; @@ -735,13 +735,14 @@ out: } neigh_release(n); } - rcu_read_unlock(); spin_unlock_irqrestore(&priv->lock, flags); ipoib_send(dev, skb, mcast->ah, IB_MULTICAST_QPN); return; } unlock: + if (n) + neigh_release(n); spin_unlock_irqrestore(&priv->lock, flags); } |