This is a note to let you know that I've just added the patch titled
net: sched: fix error return code in tcf_del_walker()
to the 5.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
net-sched-fix-error-return-code-in-tcf_del_walker.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 8caa543e33e04c720b9b5f9f91575db71cd18593
Author: Yang Yingliang <yangyingliang@xxxxxxxxxx>
Date: Thu Jun 17 16:02:07 2021 +0800
net: sched: fix error return code in tcf_del_walker()
[ 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@xxxxxxxxxx>
Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/net/sched/act_api.c b/net/sched/act_api.c
index 716cad677318..17e5cd9ebd89 100644
--- a/net/sched/act_api.c
+++ b/net/sched/act_api.c
@@ -316,7 +316,8 @@ 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);
