linux-kernel - [PATCH 2/2] tcp_metrics: use dst_dev_net

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 for Android: free password hash cracker in your pocket

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

Message-ID: <20251215215119.63681-3-gyokhan@amazon.de>
Date: Mon, 15 Dec 2025 21:51:19 +0000
From: Gyokhan Kochmarla <gyokhan@...zon.de>
To: <stable@...r.kernel.org>
CC: <edumazet@...gle.com>, <davem@...emloft.net>, <dsahern@...nel.org>,
	<kuba@...nel.org>, <pabeni@...hat.com>, <linux@...khan.com>,
	<netdev@...r.kernel.org>, <horms@...nel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH 2/2] tcp_metrics: use dst_dev_net_rcu()

From: Eric Dumazet <edumazet@...gle.com>

[ Upstream commit 50c127a69cd6285300931853b352a1918cfa180f ]

Replace three dst_dev() with a lockdep enabled helper.

Fixes: 4a6ce2b6f2ec ("net: introduce a new function dst_dev_put()")
Cc: stable@...r.kernel.org
Signed-off-by: Eric Dumazet <edumazet@...gle.com>
Reviewed-by: David Ahern <dsahern@...nel.org>
Link: https://patch.msgid.link/20250828195823.3958522-7-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@...nel.org>
Signed-off-by: Gyokhan Kochmarla <gyokhan@...zon.com>
---
 net/ipv4/tcp_metrics.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/net/ipv4/tcp_metrics.c b/net/ipv4/tcp_metrics.c
index 03c068ea27b6..10e86f1008e9 100644
--- a/net/ipv4/tcp_metrics.c
+++ b/net/ipv4/tcp_metrics.c
@@ -170,7 +170,7 @@ static struct tcp_metrics_block *tcpm_new(struct dst_entry *dst,
 	struct net *net;
 
 	spin_lock_bh(&tcp_metrics_lock);
-	net = dev_net_rcu(dst_dev(dst));
+	net = dst_dev_net_rcu(dst);
 
 	/* While waiting for the spin-lock the cache might have been populated
 	 * with this entry and so we have to check again.
@@ -273,7 +273,7 @@ static struct tcp_metrics_block *__tcp_get_metrics_req(struct request_sock *req,
 		return NULL;
 	}
 
-	net = dev_net_rcu(dst_dev(dst));
+	net = dst_dev_net_rcu(dst);
 	hash ^= net_hash_mix(net);
 	hash = hash_32(hash, tcp_metrics_hash_log);
 
@@ -318,7 +318,7 @@ static struct tcp_metrics_block *tcp_get_metrics(struct sock *sk,
 	else
 		return NULL;
 
-	net = dev_net_rcu(dst_dev(dst));
+	net = dst_dev_net_rcu(dst);
 	hash ^= net_hash_mix(net);
 	hash = hash_32(hash, tcp_metrics_hash_log);
 
-- 
2.47.3




Amazon Web Services Development Center Germany GmbH
Tamara-Danz-Str. 13
10243 Berlin
Geschaeftsfuehrung: Christof Hellmis, Andreas Stieger
Eingetragen am Amtsgericht Charlottenburg unter HRB 257764 B
Sitz: Berlin
Ust-ID: DE 365 538 597