From: Xu Wang <vulab@iscas.ac.cn>
Date: Fri, 3 Jan 2020 09:20:40 +0000 (+0000)
Subject: net: Remove redundant BUG_ON() check in phonet_pernet
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=1f623431100138ffaaae36e122f2727c13de640a;p=linux.git

net: Remove redundant BUG_ON() check in phonet_pernet

Passing NULL to phonet_pernet causes a crash via BUG_ON.
Dereferencing net in net_generic() also has the same effect.
This patch removes the redundant BUG_ON check on the same parameter.

Signed-off-by: Xu Wang <vulab@iscas.ac.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/phonet/pn_dev.c b/net/phonet/pn_dev.c
index 49bd76a87461b..ac0fae06cc153 100644
--- a/net/phonet/pn_dev.c
+++ b/net/phonet/pn_dev.c
@@ -35,8 +35,6 @@ static unsigned int phonet_net_id __read_mostly;
 
 static struct phonet_net *phonet_pernet(struct net *net)
 {
-	BUG_ON(!net);
-
 	return net_generic(net, phonet_net_id);
 }