netdev - [PATCH 1/1] bonding: restrict the data protected by rcu_read

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Message-Id: <1468308497-5384-1-git-send-email-zyjzyj2000@gmail.com>
Date:	Tue, 12 Jul 2016 15:28:17 +0800
From:	Zhu Yanjun <zyjzyj2000@...il.com>
To:	netdev@...r.kernel.org
Cc:	Zhu Yanjun <zyjzyj2000@...il.com>,
	Jay Vosburgh <jay.vosburgh@...onical.com>
Subject: [PATCH 1/1] bonding: restrict the data protected by rcu_read_lock

In this function, origin is a pointer to struct aggregator.
No matter what agg is changed to, it has nothing to do with origin.

CC: Jay Vosburgh <jay.vosburgh@...onical.com>
Signed-off-by: Zhu Yanjun <zyjzyj2000@...il.com>
---
 drivers/net/bonding/bond_3ad.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/bonding/bond_3ad.c b/drivers/net/bonding/bond_3ad.c
index edc70ff..20afee3 100644
--- a/drivers/net/bonding/bond_3ad.c
+++ b/drivers/net/bonding/bond_3ad.c
@@ -1624,8 +1624,8 @@ static void ad_agg_selection_logic(struct aggregator *agg,
 	struct slave *slave;
 	struct port *port;
 
-	rcu_read_lock();
 	origin = agg;
+	rcu_read_lock();
 	active = __get_active_agg(agg);
 	best = (active && agg_device_up(active)) ? active : NULL;
 
-- 
1.7.9.5