linux-kernel - [PATCH -next] mctp: remove unnecessary check before calling 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>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20211130031243.768823-1-yangyingliang@huawei.com>
Date:   Tue, 30 Nov 2021 11:12:43 +0800
From:   Yang Yingliang <yangyingliang@...wei.com>
To:     <linux-kernel@...r.kernel.org>, <netdev@...r.kernel.org>
CC:     <jk@...econstruct.com.au>, <davem@...emloft.net>, <kuba@...nel.org>
Subject: [PATCH -next] mctp: remove unnecessary check before calling kfree_skb()

The skb will be checked inside kfree_skb(), so remove the
outside check.

Signed-off-by: Yang Yingliang <yangyingliang@...wei.com>
---
 net/mctp/af_mctp.c | 3 +--
 net/mctp/route.c   | 4 +---
 2 files changed, 2 insertions(+), 5 deletions(-)

diff --git a/net/mctp/af_mctp.c b/net/mctp/af_mctp.c
index 871cf6266125..c921de63b494 100644
--- a/net/mctp/af_mctp.c
+++ b/net/mctp/af_mctp.c
@@ -405,8 +405,7 @@ static void mctp_sk_unhash(struct sock *sk)
 		trace_mctp_key_release(key, MCTP_TRACE_KEY_CLOSED);
 
 		spin_lock(&key->lock);
-		if (key->reasm_head)
-			kfree_skb(key->reasm_head);
+		kfree_skb(key->reasm_head);
 		key->reasm_head = NULL;
 		key->reasm_dead = true;
 		key->valid = false;
diff --git a/net/mctp/route.c b/net/mctp/route.c
index 46c44823edb7..8d759b48f747 100644
--- a/net/mctp/route.c
+++ b/net/mctp/route.c
@@ -231,9 +231,7 @@ static void __mctp_key_unlock_drop(struct mctp_sk_key *key, struct net *net,
 	/* and one for the local reference */
 	mctp_key_unref(key);
 
-	if (skb)
-		kfree_skb(skb);
-
+	kfree_skb(skb);
 }
 
 #ifdef CONFIG_MCTP_FLOWS
-- 
2.25.1