> @@ -587,8 +589,10 @@ void ipoib_mcast_join_task(struct work_s
> __ipoib_mcast_add(dev, priv->broadcast);
> spin_unlock_irq(&priv->lock);
> }
> + rtnl_unlock();
>
> - if (!test_bit(IPOIB_MCAST_FLAG_ATTACHED, &priv->broadcast->flags)) {
> + if (priv->broadcast &&
> + !test_bit(IPOIB_MCAST_FLAG_ATTACHED, &priv->broadcast->flags)) {
I'm trying to understand this patch. What protects access to
priv->broadcast here and prevents it from becoming NULL right after the
test?
- R.
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