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netfilter: ipset: do not call ipset_nest_end after nla_nest_cancel 

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: 45040978c8 ("netfilter: ipset: Fix set:list type crash when flush/dump set in parallel")
Signed-off-by: Pan Bian <bianpan2016@163.com>
Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Pan Bian 2018-12-10 14:39:37 +01:00 committed by Pablo Neira Ayuso
parent 530aad7701
commit 708abf74dd
1 changed files with 1 additions and 1 deletions
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2
net/netfilter/ipset/ip_set_list_set.c
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@ -531,8 +531,8 @@ list_set_list(const struct ip_set *set,
ret = -EMSGSIZE; ret = -EMSGSIZE;
} else { } else {
cb->args[IPSET_CB_ARG0] = i; cb->args[IPSET_CB_ARG0] = i;
}
ipset_nest_end(skb, atd); ipset_nest_end(skb, atd);
}
out: out:
rcu_read_unlock(); rcu_read_unlock();
return ret; return ret;