[PATCH 6.18 243/752] ipv6: annotate data-races in ip6_multipath_hash_{policy,fields}()

Sasha Levin
2026-02-28T17:51:32Z

From: Eric Dumazet <edumazet@google.com>

[ Upstream commit 03e9d91dd64e2f5ea632df5d59568d91757efc4d ]

Add missing READ_ONCE() when reading sysctl values.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20260115094141.3124990-5-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
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 f0936df7567e3..7e984e75f3345 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -1010,11 +1010,11 @@ static inline int ip6_default_np_autolabel(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)
--
2.51.0