[PATCH 2/3] net: use inet6_rcv_saddr to compare sockets

Stefan Bader stefan.bader at canonical.com
Mon Oct 16 11:46:25 UTC 2017

From: Josef Bacik <jbacik at fb.com>

BugLink: http://bugs.launchpad.net/bugs/1722702

In ipv6_rcv_saddr_equal() we need to use inet6_rcv_saddr(sk) for the
ipv6 compare with the fast socket information to make sure we're doing
the proper comparisons.

Fixes: 637bc8bbe6c0 ("inet: reset tb->fastreuseport when adding a reuseport sk")
Reported-and-tested-by: Cole Robinson <crobinso at redhat.com>
Signed-off-by: Josef Bacik <jbacik at fb.com>
Signed-off-by: David S. Miller <davem at davemloft.net>
(cherry-picked from commit 7a56673b58f2414679e926bba80309a037a4fd35)
Signed-off-by: Stefan Bader <stefan.bader at canonical.com>
 net/ipv4/inet_connection_sock.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c
index 3cff95f..ff8b15a 100644
--- a/net/ipv4/inet_connection_sock.c
+++ b/net/ipv4/inet_connection_sock.c
@@ -266,7 +266,7 @@ static inline int sk_reuseport_match(struct inet_bind_bucket *tb,
 	if (tb->fast_sk_family == AF_INET6)
 		return ipv6_rcv_saddr_equal(&tb->fast_v6_rcv_saddr,
-					    &sk->sk_v6_rcv_saddr,
+					    inet6_rcv_saddr(sk),

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