netdev - [PATCH net-next] netns: fix unbalanced spin

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Message-Id: <1431517389-19937-1-git-send-email-nicolas.dichtel@6wind.com>
Date:	Wed, 13 May 2015 13:43:09 +0200
From:	Nicolas Dichtel <nicolas.dichtel@...nd.com>
To:	dan.carpenter@...cle.com
Cc:	davem@...emloft.net, netdev@...r.kernel.org,
	kernel-janitors@...r.kernel.org,
	Nicolas Dichtel <nicolas.dichtel@...nd.com>
Subject: [PATCH net-next] netns: fix unbalanced spin_lock on error

Unlock was missing on error path.

Fixes: 95f38411df05 ("netns: use a spin_lock to protect nsid management")
Reported-by: Dan Carpenter <dan.carpenter@...cle.com>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@...nd.com>
---
 net/core/net_namespace.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c
index a665bf490c88..cb32c0378c10 100644
--- a/net/core/net_namespace.c
+++ b/net/core/net_namespace.c
@@ -565,6 +565,7 @@ static int rtnl_net_newid(struct sk_buff *skb, struct nlmsghdr *nlh)
 
 	spin_lock_irqsave(&nsid_lock, flags);
 	if (__peernet2id(net, peer) >= 0) {
+		spin_unlock_irqrestore(&nsid_lock, flags);
 		err = -EEXIST;
 		goto out;
 	}
-- 
2.2.2

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