From: Guillaume Nault <g.nault@alphalink.fr>
Date: Mon, 7 Mar 2016 18:36:44 +0000 (+0100)
Subject: ppp: release rtnl mutex when interface creation fails
X-Git-Tag: v4.4.14-KARO~668
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=cd8101d8ece8d776b79b7e0528cc8ba6d6c33562;p=karo-tx-linux.git

ppp: release rtnl mutex when interface creation fails

[ Upstream commit 6faac63a6986f29ef39827f460edd3a5ba64ad5c ]

Add missing rtnl_unlock() in the error path of ppp_create_interface().

Fixes: 58a89ecaca53 ("ppp: fix lockdep splat in ppp_dev_uninit()")
Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/net/ppp/ppp_generic.c b/drivers/net/ppp/ppp_generic.c
index 9a863c6a6a33..40b303ed63b7 100644
--- a/drivers/net/ppp/ppp_generic.c
+++ b/drivers/net/ppp/ppp_generic.c
@@ -2803,6 +2803,7 @@ static struct ppp *ppp_create_interface(struct net *net, int unit,
 
 out2:
 	mutex_unlock(&pn->all_ppp_mutex);
+	rtnl_unlock();
 	free_netdev(dev);
 out1:
 	*retp = ret;