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authorEli Cohen <eli@mellanox.co.il>2006-04-05 15:59:34 +0300
committerRoland Dreier <rolandd@cisco.com>2006-04-10 09:43:59 -0700
commita30bb96c6f5aca6513e4dbd94962da03d14b20a9 (patch)
tree7314d0813071b9e1b808422c96e868c26e14245a /drivers/infiniband/ulp
parentabf45dbb5b256dab439ca3b6b71191ecfddf9cb6 (diff)
downloadop-kernel-dev-a30bb96c6f5aca6513e4dbd94962da03d14b20a9.zip
op-kernel-dev-a30bb96c6f5aca6513e4dbd94962da03d14b20a9.tar.gz
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>
Diffstat (limited to 'drivers/infiniband/ulp')
-rw-r--r--drivers/infiniband/ulp/ipoib/ipoib_main.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c
index 5bf7e26..996c6e1 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_main.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c
@@ -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,
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