From 58b8c812c7641d9d9bfd1663f42dac2dbba3a560 Mon Sep 17 00:00:00 2001
From: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Date: Tue, 27 Jul 2021 23:40:54 -0300
Subject: [PATCH] sctp: fix return value check in __sctp_rcv_asconf_lookup

[ Upstream commit 557fb5862c9272ad9b21407afe1da8acfd9b53eb ]

As Ben Hutchings noticed, this check should have been inverted: the call
returns true in case of success.

Reported-by: Ben Hutchings <ben@decadent.org.uk>
Fixes: 0c5dc070ff3d ("sctp: validate from_addr_param return")
Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Reviewed-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/sctp/input.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/sctp/input.c b/net/sctp/input.c
index f72bff93745c4..ddb5b5c2550ef 100644
--- a/net/sctp/input.c
+++ b/net/sctp/input.c
@@ -1175,7 +1175,7 @@ static struct sctp_association *__sctp_rcv_asconf_lookup(
 	if (unlikely(!af))
 		return NULL;
 
-	if (af->from_addr_param(&paddr, param, peer_port, 0))
+	if (!af->from_addr_param(&paddr, param, peer_port, 0))
 		return NULL;
 
 	return __sctp_lookup_association(net, laddr, &paddr, transportp);