From: Dan Carpenter <error27@gmail.com>
Date: Wed, 11 Nov 2009 02:03:54 +0000 (+0000)
Subject: ipmr: missing dev_put() on error path in vif_add()
X-Git-Tag: v2.6.32-rc8~10^2~20
X-Git-Url: http://ftp.safe.ca/?p=safe%2Fjmp%2Flinux-2.6;a=commitdiff_plain;h=d0490cfdf440fded2c292cfb8bb9272fc9ef6943

ipmr: missing dev_put() on error path in vif_add()

The other error paths in front of this one have a dev_put() but this one
got missed.

Found by smatch static checker.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: Wang Chen <ellre923@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index 630a56d..99508d6 100644
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -483,8 +483,10 @@ static int vif_add(struct net *net, struct vifctl *vifc, int mrtsock)
 		return -EINVAL;
 	}
 
-	if ((in_dev = __in_dev_get_rtnl(dev)) == NULL)
+	if ((in_dev = __in_dev_get_rtnl(dev)) == NULL) {
+		dev_put(dev);
 		return -EADDRNOTAVAIL;
+	}
 	IPV4_DEVCONF(in_dev->cnf, MC_FORWARDING)++;
 	ip_rt_multicast_event(in_dev);