diff options
author | Alex Shi <alex.shi@linaro.org> | 2018-03-20 02:25:07 +0000 |
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committer | Alex Shi <alex.shi@linaro.org> | 2018-03-20 02:25:07 +0000 |
commit | 031f431679b03ba7e791dd051fc13f51f806fcd7 (patch) | |
tree | 9018f8a4a6c04feaf0180cae915dfe804913ce34 /drivers/infiniband/ulp/ipoib/ipoib_multicast.c | |
parent | f7901365aa48b20b25f8402e0fd1eea4ac6c55e7 (diff) | |
parent | 91db57e54eb9be1560454d6a370d67847b05735f (diff) |
Merge remote-tracking branch 'rt-stable/v4.4-rt' into linux-linaro-lsk-v4.4-rtlsk-v4.4-18.03-rt
Diffstat (limited to 'drivers/infiniband/ulp/ipoib/ipoib_multicast.c')
-rw-r--r-- | drivers/infiniband/ulp/ipoib/ipoib_multicast.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c index a123d0439c4c..3d6ecc3c40b7 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c +++ b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c @@ -775,7 +775,10 @@ void ipoib_mcast_send(struct net_device *dev, u8 *daddr, struct sk_buff *skb) spin_lock_irqsave(&priv->lock, flags); if (!neigh) { neigh = ipoib_neigh_alloc(daddr, dev); - if (neigh) { + /* Make sure that the neigh will be added only + * once to mcast list. + */ + if (neigh && list_empty(&neigh->list)) { kref_get(&mcast->ah->ref); neigh->ah = mcast->ah; list_add_tail(&neigh->list, &mcast->neigh_list); |