linux-kernel - [PATCH 1/3] net: set tb->fast_sk

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Message-Id: <1505752137-15522-2-git-send-email-jbacik@fb.com>
Date:   Mon, 18 Sep 2017 12:28:55 -0400
From:   josef@...icpanda.com
To:     davem@...emloft.net, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, crobinso@...hat.com,
        labbott@...hat.com, kernel-team@...com
Cc:     Josef Bacik <jbacik@...com>, stable@...r.kernel.org
Subject: [PATCH 1/3] net: set tb->fast_sk_family

From: Josef Bacik <jbacik@...com>

We need to set the tb->fast_sk_family properly so we can use the proper
comparison function for all subsequent reuseport bind requests.

Cc: stable@...r.kernel.org
Fixes: 637bc8bbe6c0 ("inet: reset tb->fastreuseport when adding a reuseport sk")
Reported-and-tested-by: Cole Robinson <crobinso@...hat.com>
Signed-off-by: Josef Bacik <jbacik@...com>
---
 net/ipv4/inet_connection_sock.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c
index b9c64b40a83a..f87f4805e244 100644
--- a/net/ipv4/inet_connection_sock.c
+++ b/net/ipv4/inet_connection_sock.c
@@ -328,6 +328,7 @@ int inet_csk_get_port(struct sock *sk, unsigned short snum)
 			tb->fastuid = uid;
 			tb->fast_rcv_saddr = sk->sk_rcv_saddr;
 			tb->fast_ipv6_only = ipv6_only_sock(sk);
+			tb->fast_sk_family = sk->sk_family;
 #if IS_ENABLED(CONFIG_IPV6)
 			tb->fast_v6_rcv_saddr = sk->sk_v6_rcv_saddr;
 #endif
@@ -354,6 +355,7 @@ int inet_csk_get_port(struct sock *sk, unsigned short snum)
 				tb->fastuid = uid;
 				tb->fast_rcv_saddr = sk->sk_rcv_saddr;
 				tb->fast_ipv6_only = ipv6_only_sock(sk);
+				tb->fast_sk_family = sk->sk_family;
 #if IS_ENABLED(CONFIG_IPV6)
 				tb->fast_v6_rcv_saddr = sk->sk_v6_rcv_saddr;
 #endif
-- 
2.7.4