netdev - [PATCH net-next 4/8] ipv6: annotate data-races in ip6_multipath_hash

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Message-ID: <20260115094141.3124990-5-edumazet@google.com>
Date: Thu, 15 Jan 2026 09:41:37 +0000
From: Eric Dumazet <edumazet@...gle.com>
To: "David S . Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>, 
	Paolo Abeni <pabeni@...hat.com>
Cc: Simon Horman <horms@...nel.org>, David Ahern <dsahern@...nel.org>, netdev@...r.kernel.org, 
	eric.dumazet@...il.com, Eric Dumazet <edumazet@...gle.com>
Subject: [PATCH net-next 4/8] ipv6: annotate data-races in ip6_multipath_hash_{policy,fields}()

Add missing READ_ONCE() when reading sysctl values.

Signed-off-by: Eric Dumazet <edumazet@...gle.com>
---
 include/net/ipv6.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index f39cd85e89123a06f7660868ef42c8050d693fbf..c7f597da01cd92293b9ffbd9e692dea75fd581b8 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -1014,11 +1014,11 @@ static inline int ip6_default_np_autolabel(const struct net *net)
 #if IS_ENABLED(CONFIG_IPV6)
 static inline int ip6_multipath_hash_policy(const struct net *net)
 {
-	return net->ipv6.sysctl.multipath_hash_policy;
+	return READ_ONCE(net->ipv6.sysctl.multipath_hash_policy);
 }
 static inline u32 ip6_multipath_hash_fields(const struct net *net)
 {
-	return net->ipv6.sysctl.multipath_hash_fields;
+	return READ_ONCE(net->ipv6.sysctl.multipath_hash_fields);
 }
 #else
 static inline int ip6_multipath_hash_policy(const struct net *net)
-- 
2.52.0.457.g6b5491de43-goog