linux-kernel - [PATCH 4.8 10/45] rtnl: fix the loop index update error in rtnl_dump

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Message-Id: <20161209161755.337006867@linuxfoundation.org>
Date:   Fri,  9 Dec 2016 17:20:39 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Zhang Shengju <zhangshengju@...s.chinamobile.com>,
        David Ahern <dsa@...ulusnetworks.com>,
        "David S. Miller" <davem@...emloft.net>
Subject: [PATCH 4.8 10/45] rtnl: fix the loop index update error in rtnl_dump_ifinfo()

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

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

From: Zhang Shengju <zhangshengju@...s.chinamobile.com>


[ Upstream commit 3f0ae05d6fea0ed5b19efdbc9c9f8e02685a3af3 ]

If the link is filtered out, loop index should also be updated. If not,
loop index will not be correct.

Fixes: dc599f76c22b0 ("net: Add support for filtering link dump by master device and kind")
Signed-off-by: Zhang Shengju <zhangshengju@...s.chinamobile.com>
Acked-by: David Ahern <dsa@...ulusnetworks.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 net/core/rtnetlink.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -1578,7 +1578,7 @@ static int rtnl_dump_ifinfo(struct sk_bu
 		head = &net->dev_index_head[h];
 		hlist_for_each_entry(dev, head, index_hlist) {
 			if (link_dump_filtered(dev, master_idx, kind_ops))
-				continue;
+				goto cont;
 			if (idx < s_idx)
 				goto cont;
 			err = rtnl_fill_ifinfo(skb, dev, RTM_NEWLINK,