linux-kernel - [ 18/61] ipv6: fix the noflags test in addrconf_get_prefix

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Message-Id: <20130212203420.788340558@linuxfoundation.org>
Date:	Tue, 12 Feb 2013 12:34:38 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Romain Kuntz <r.kuntz@...lavors.com>,
	YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>,
	"David S. Miller" <davem@...emloft.net>
Subject: [ 18/61] ipv6: fix the noflags test in addrconf_get_prefix_route

3.7-stable review patch.  If anyone has any objections, please let me know.

------------------


From: Romain Kuntz <r.kuntz@...lavors.com>

[ Upstream commit 85da53bf1c336bb07ac038fb951403ab0478d2c5 ]

The tests on the flags in addrconf_get_prefix_route() does no make
much sense: the 'noflags' parameter contains the set of flags that
must not match with the route flags, so the test must be done
against 'noflags', and not against 'flags'.

Signed-off-by: Romain Kuntz <r.kuntz@...lavors.com>
Acked-by: YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 net/ipv6/addrconf.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -1723,7 +1723,7 @@ static struct rt6_info *addrconf_get_pre
 			continue;
 		if ((rt->rt6i_flags & flags) != flags)
 			continue;
-		if ((noflags != 0) && ((rt->rt6i_flags & flags) != 0))
+		if ((rt->rt6i_flags & noflags) != 0)
 			continue;
 		dst_hold(&rt->dst);
 		break;


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