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IPoIB: Close race in ipoib_flush_paths() 

ib_sa_cancel_query() must be called with priv->lock held since
a completion might arrive and set path->query to NULL.

Signed-off-by: Eli Cohen <eli@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Eli Cohen 2006-04-05 15:59:34 +03:00 committed by Roland Dreier
parent abf45dbb5b
commit a30bb96c6f
1 changed files with 3 additions and 2 deletions
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5
drivers/infiniband/ulp/ipoib/ipoib_main.c
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@ -346,14 +346,15 @@ void ipoib_flush_paths(struct net_device *dev)
list_for_each_entry(path, &remove_list, list)
rb_erase(&path->rb_node, &priv->path_tree);
spin_unlock_irqrestore(&priv->lock, flags);
list_for_each_entry_safe(path, tp, &remove_list, list) {
if (path->query)
ib_sa_cancel_query(path->query_id, path->query);
spin_unlock_irqrestore(&priv->lock, flags);
wait_for_completion(&path->done);
path_free(dev, path);
spin_lock_irqsave(&priv->lock, flags);
}
spin_unlock_irqrestore(&priv->lock, flags);
}
static void path_rec_completion(int status,