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Message-Id: <20181226223839.150262-22-sashal@kernel.org>
Date: Wed, 26 Dec 2018 17:38:02 -0500
From: Sasha Levin <sashal@...nel.org>
To: stable@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: Pan Bian <bianpan2016@....com>,
Jozsef Kadlecsik <kadlec@...ckhole.kfki.hu>,
Pablo Neira Ayuso <pablo@...filter.org>,
Sasha Levin <sashal@...nel.org>,
netfilter-devel@...r.kernel.org, coreteam@...filter.org,
netdev@...r.kernel.org
Subject: [PATCH AUTOSEL 4.14 22/59] netfilter: ipset: do not call ipset_nest_end after nla_nest_cancel
From: Pan Bian <bianpan2016@....com>
[ Upstream commit 708abf74dd87f8640871b814faa195fb5970b0e3 ]
In the error handling block, nla_nest_cancel(skb, atd) is called to
cancel the nest operation. But then, ipset_nest_end(skb, atd) is
unexpected called to end the nest operation. This patch calls the
ipset_nest_end only on the branch that nla_nest_cancel is not called.
Fixes: 45040978c899 ("netfilter: ipset: Fix set:list type crash when flush/dump set in parallel")
Signed-off-by: Pan Bian <bianpan2016@....com>
Signed-off-by: Jozsef Kadlecsik <kadlec@...ckhole.kfki.hu>
Signed-off-by: Pablo Neira Ayuso <pablo@...filter.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
net/netfilter/ipset/ip_set_list_set.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/netfilter/ipset/ip_set_list_set.c b/net/netfilter/ipset/ip_set_list_set.c
index 75d52aed6fdb..e563921e6af5 100644
--- a/net/netfilter/ipset/ip_set_list_set.c
+++ b/net/netfilter/ipset/ip_set_list_set.c
@@ -542,8 +542,8 @@ list_set_list(const struct ip_set *set,
ret = -EMSGSIZE;
} else {
cb->args[IPSET_CB_ARG0] = i;
+ ipset_nest_end(skb, atd);
}
- ipset_nest_end(skb, atd);
out:
rcu_read_unlock();
return ret;
--
2.19.1
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