linux-kernel - [PATCH 45/98] netfilter: nfnetlink_cttimeout: fix incomplete dumping of objects

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Message-Id: <1373552708-15235-46-git-send-email-luis.henriques@canonical.com>
Date:	Thu, 11 Jul 2013 15:24:15 +0100
From:	Luis Henriques <luis.henriques@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Pablo Neira Ayuso <pablo@...filter.org>,
	Luis Henriques <luis.henriques@...onical.com>
Subject: [PATCH 45/98] netfilter: nfnetlink_cttimeout: fix incomplete dumping of objects

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

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

From: Pablo Neira Ayuso <pablo@...filter.org>

commit 37bc4f8dfa72fb43b84381abca39cfdbbc8ff2df upstream.

Fix broken incomplete object dumping if the list of objects does not
fit into one single netlink message.

Reported-by: Gabriel Lazar <Gabriel.Lazar@....utcluj.ro>
Signed-off-by: Pablo Neira Ayuso <pablo@...filter.org>
[ luis: backported to 3.5: adjusted context ]
Signed-off-by: Luis Henriques <luis.henriques@...onical.com>
---
 net/netfilter/nfnetlink_cttimeout.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/net/netfilter/nfnetlink_cttimeout.c b/net/netfilter/nfnetlink_cttimeout.c
index 3e65528..dd6638a 100644
--- a/net/netfilter/nfnetlink_cttimeout.c
+++ b/net/netfilter/nfnetlink_cttimeout.c
@@ -216,9 +216,12 @@ ctnl_timeout_dump(struct sk_buff *skb, struct netlink_callback *cb)
 
 	rcu_read_lock();
 	list_for_each_entry_rcu(cur, &cttimeout_list, head) {
-		if (last && cur != last)
-			continue;
+		if (last) {
+			if (cur != last)
+				continue;
 
+			last = NULL;
+		}
 		if (ctnl_timeout_fill_info(skb, NETLINK_CB(cb->skb).pid,
 					   cb->nlh->nlmsg_seq,
 					   NFNL_MSG_TYPE(cb->nlh->nlmsg_type),
-- 
1.8.1.2

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