From b0270e91014dabfceaf37f5b40ad51bbf21a1302 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Tue, 15 Apr 2014 12:58:34 -0400 Subject: ipv4: add a sock pointer to ip_queue_xmit() ip_queue_xmit() assumes the skb it has to transmit is attached to an inet socket. Commit 31c70d5956fc ("l2tp: keep original skb ownership") changed l2tp to not change skb ownership and thus broke this assumption. One fix is to add a new 'struct sock *sk' parameter to ip_queue_xmit(), so that we do not assume skb->sk points to the socket used by l2tp tunnel. Fixes: 31c70d5956fc ("l2tp: keep original skb ownership") Reported-by: Zhan Jianyu Tested-by: Zhan Jianyu Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- net/l2tp/l2tp_core.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'net/l2tp/l2tp_core.c') diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c index 47f7a5490555..a4e37d7158dc 100644 --- a/net/l2tp/l2tp_core.c +++ b/net/l2tp/l2tp_core.c @@ -1131,10 +1131,10 @@ static int l2tp_xmit_core(struct l2tp_session *session, struct sk_buff *skb, skb->local_df = 1; #if IS_ENABLED(CONFIG_IPV6) if (tunnel->sock->sk_family == PF_INET6 && !tunnel->v4mapped) - error = inet6_csk_xmit(skb, NULL); + error = inet6_csk_xmit(tunnel->sock, skb, NULL); else #endif - error = ip_queue_xmit(skb, fl); + error = ip_queue_xmit(tunnel->sock, skb, fl); /* Update stats */ if (error >= 0) { -- cgit v1.2.3-59-g8ed1b