netdev - Re: [Patch net] net_sched: fix error path in red

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Date:   Fri, 28 Aug 2020 07:17:31 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     xiyou.wangcong@...il.com
Cc:     netdev@...r.kernel.org,
        syzbot+b33c1cb0a30ebdc8a5f9@...kaller.appspotmail.com,
        syzbot+e5ea5f8a3ecfd4427a1c@...kaller.appspotmail.com,
        petrm@...lanox.com
Subject: Re: [Patch net] net_sched: fix error path in red_init()

From: Cong Wang <xiyou.wangcong@...il.com>
Date: Thu, 27 Aug 2020 10:40:41 -0700

> When ->init() fails, ->destroy() is called to clean up.
> So it is unnecessary to clean up in red_init(), and it
> would cause some refcount underflow.
> 
> Fixes: aee9caa03fc3 ("net: sched: sch_red: Add qevents "early_drop" and "mark"")
> Reported-and-tested-by: syzbot+b33c1cb0a30ebdc8a5f9@...kaller.appspotmail.com
> Reported-and-tested-by: syzbot+e5ea5f8a3ecfd4427a1c@...kaller.appspotmail.com
> Cc: Petr Machata <petrm@...lanox.com>
> Signed-off-by: Cong Wang <xiyou.wangcong@...il.com>

Applied, thank you.