X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=net%2Fipv6%2Ftcp_ipv6.c;h=45a95e032bdfe8ffb05309bed8a967ee08690293;hb=d983ea6f16b835dcde2ee9a58a1e764ce68bfccc;hp=e3d9f4559c99f252eba448845cce434bc53f3fd8;hpb=8caf8a91f34d55e8e3b1355ee8d658cb472146e2;p=mirror_ubuntu-jammy-kernel.git

diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index e3d9f4559c99..45a95e032bdf 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -406,7 +406,7 @@ static int tcp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
 
 	tp = tcp_sk(sk);
 	/* XXX (TFO) - tp->snd_una should be ISN (tcp_create_openreq_child() */
-	fastopen = tp->fastopen_rsk;
+	fastopen = rcu_dereference(tp->fastopen_rsk);
 	snd_una = fastopen ? tcp_rsk(fastopen)->snt_isn : tp->snd_una;
 	if (sk->sk_state != TCP_LISTEN &&
 	    !between(seq, snd_una, tp->snd_nxt)) {