linux-kernel - [PATCH] mISDN: remove redundant null pointer check before kfree

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>] [day] [month] [year] [list]

Date:   Thu, 20 Sep 2018 22:27:28 +0800
From:   zhong jiang <zhongjiang@...wei.com>
To:     <davem@...emloft.net>
CC:     <isdn@...ux-pingi.de>, <dvlasenk@...hat.com>,
        <gregkh@...uxfoundation.org>, <netdev@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH] mISDN: remove redundant null pointer check before kfree_skb

kfree_skb has taken the null pointer into account. hence it is safe
to remove the redundant null pointer check before kfree_skb.

Signed-off-by: zhong jiang <zhongjiang@...wei.com>
---
 drivers/isdn/mISDN/socket.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/isdn/mISDN/socket.c b/drivers/isdn/mISDN/socket.c
index 18c0a12..15d3ca3 100644
--- a/drivers/isdn/mISDN/socket.c
+++ b/drivers/isdn/mISDN/socket.c
@@ -236,8 +236,7 @@ static void mISDN_sock_unlink(struct mISDN_sock_list *l, struct sock *sk)
 	}
 
 done:
-	if (skb)
-		kfree_skb(skb);
+	kfree_skb(skb);
 	release_sock(sk);
 	return err;
 }
-- 
1.7.12.4