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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, Hangbin Liu <liuhangbin@gmail.com>,
        David Ahern <dsahern@gmail.com>,
        "David S. Miller" <davem@davemloft.net>
Subject: [PATCH 5.3 12/95] ipv6/route: return if there is no fib_nh_gw_family
Date:   Wed, 27 Nov 2019 21:31:29 +0100
Message-Id: <20191127202850.020132831@linuxfoundation.org>
In-Reply-To: <20191127202845.651587549@linuxfoundation.org>
References: <20191127202845.651587549@linuxfoundation.org>
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From: Hangbin Liu <liuhangbin@gmail.com>

[ Upstream commit 004b39427f945696db30abb2c4e1a3856ffff819 ]

Previously we will return directly if (!rt || !rt->fib6_nh.fib_nh_gw_family)
in function rt6_probe(), but after commit cc3a86c802f0
("ipv6: Change rt6_probe to take a fib6_nh"), the logic changed to
return if there is fib_nh_gw_family.

Fixes: cc3a86c802f0 ("ipv6: Change rt6_probe to take a fib6_nh")
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/ipv6/route.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -634,7 +634,7 @@ static void rt6_probe(struct fib6_nh *fi
 	 * Router Reachability Probe MUST be rate-limited
 	 * to no more than one per minute.
 	 */
-	if (fib6_nh->fib_nh_gw_family)
+	if (!fib6_nh->fib_nh_gw_family)
 		return;
 
 	nh_gw = &fib6_nh->fib_nh_gw6;