From: Yang Yingliang yangyingliang@huawei.com
[ Upstream commit 55d96f72e8ddc0a294e0b9c94016edbb699537e1 ]
When nla_put_u32() fails, 'ret' could be 0, it should return error code in tcf_del_walker().
Reported-by: Hulk Robot hulkci@huawei.com Signed-off-by: Yang Yingliang yangyingliang@huawei.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- net/sched/act_api.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/sched/act_api.c b/net/sched/act_api.c index 88e14cfeb5d5..f613299ca7f0 100644 --- a/net/sched/act_api.c +++ b/net/sched/act_api.c @@ -333,7 +333,8 @@ static int tcf_del_walker(struct tcf_idrinfo *idrinfo, struct sk_buff *skb, } mutex_unlock(&idrinfo->lock);
- if (nla_put_u32(skb, TCA_FCNT, n_i)) + ret = nla_put_u32(skb, TCA_FCNT, n_i); + if (ret) goto nla_put_failure; nla_nest_end(skb, nest);