netdev - Re: [patch net-next] net: sched: atm: destroy main filter chain

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Date:   Fri, 24 Mar 2017 10:46:55 -0700
From:   Cong Wang <xiyou.wangcong@...il.com>
To:     Jiri Pirko <jiri@...nulli.us>
Cc:     Linux Kernel Network Developers <netdev@...r.kernel.org>,
        David Miller <davem@...emloft.net>,
        Jamal Hadi Salim <jhs@...atatu.com>, mlxsw@...lanox.com
Subject: Re: [patch net-next] net: sched: atm: destroy main filter chain

On Fri, Mar 24, 2017 at 6:39 AM, Jiri Pirko <jiri@...nulli.us> wrote:
> From: Jiri Pirko <jiri@...lanox.com>
>
> In atm_tc_destroy, the flow qdisc filter chains are destroyed. However
> the main chain is not. So fix this memory and reference leak.

Are you sure? 'link' is on the 'flows' already according
to this comment:

struct atm_qdisc_data {
        struct atm_flow_data    link;           /* unclassified skbs go here */
        struct list_head        flows;          /* NB: "link" is also on this
                                                   list */
        struct tasklet_struct   task;           /* dequeue tasklet */
};