linux-kernel - [PATCH] ppp: Remove redundant BUG_ON() check in ppp

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <1577180224-16405-1-git-send-email-vulab@iscas.ac.cn>
Date:   Tue, 24 Dec 2019 09:37:04 +0000
From:   Xu Wang <vulab@...as.ac.cn>
To:     paulus@...ba.org
Cc:     davem@...emloft.net, linux-ppp@...r.kernel.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] ppp: Remove redundant BUG_ON() check in ppp_pernet

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

Signed-off-by: Xu Wang <vulab@...as.ac.cn>
---
 drivers/net/ppp/ppp_generic.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/net/ppp/ppp_generic.c b/drivers/net/ppp/ppp_generic.c
index 3bf8a8b..22cc2cb 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);
 }
 
-- 
2.7.4