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ipv6: use READ_ONCE() for bindv6only default in inet6_create()

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inet6_create() reads net->ipv6.sysctl.bindv6only locklessly.

Use READ_ONCE() for this sysctl access.

Signed-off-by: Runyu Xiao <runyu.xiao@seu.edu.cn>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Link: https://patch.msgid.link/20260602002414.1504106-1-runyu.xiao@seu.edu.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Runyu Xiao authored and Jakub Kicinski committed 2026-06-04 18:30:24 -07:00
1 parent 831d557a3e
commit 7a20eb5422
1 file changed
+1 -1
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net/ipv6/af_inet6.c
+1 -1
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@@ -211,7 +211,7 @@ lookup_protocol:
np->pmtudisc = IPV6_PMTUDISC_WANT;
inet6_assign_bit(REPFLOW, sk, READ_ONCE(net->ipv6.sysctl.flowlabel_reflect) &
FLOWLABEL_REFLECT_ESTABLISHED);
sk->sk_ipv6only = net->ipv6.sysctl.bindv6only;
sk->sk_ipv6only = READ_ONCE(net->ipv6.sysctl.bindv6only);
sk->sk_txrehash = READ_ONCE(net->core.sysctl_txrehash);
/* Init the ipv4 part of the socket since we can have sockets