From: Xu Wang <vulab@iscas.ac.cn>
Date: Tue, 24 Dec 2019 09:37:04 +0000 (+0000)
Subject: ppp: Remove redundant BUG_ON() check in ppp_pernet
X-Git-Tag: Ubuntu-5.13.0-19.19~6812^2~197
X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=8a3f44a0bb76c4e69dea3ad398ada41ae4ffc3ea;p=mirror_ubuntu-jammy-kernel.git

ppp: Remove redundant BUG_ON() check in ppp_pernet

Passing NULL to ppp_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/drivers/net/ppp/ppp_generic.c b/drivers/net/ppp/ppp_generic.c
index 3bf8a8b42983..22cc2cb9d878 100644
--- a/drivers/net/ppp/ppp_generic.c
+++ b/drivers/net/ppp/ppp_generic.c
@@ -296,8 +296,6 @@ static struct class *ppp_class;
 /* per net-namespace data */
 static inline struct ppp_net *ppp_pernet(struct net *net)
 {
-	BUG_ON(!net);
-
 	return net_generic(net, ppp_net_id);
 }