netdev - Re: [PATCH net 1/2] net/sched: cls_u32: fix refcount leak in the error path of u32

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Message-ID: <cc0a3849-48c0-384d-6dd5-29a6763695f2@mojatatu.com>
Date:   Fri, 20 Dec 2019 08:29:37 -0500
From:   Jamal Hadi Salim <jhs@...atatu.com>
To:     Vlad Buslov <vladbu@...lanox.com>
Cc:     Davide Caratti <dcaratti@...hat.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Cong Wang <xiyou.wangcong@...il.com>,
        Jiri Pirko <jiri@...nulli.us>, Roman Mashak <mrv@...atatu.com>
Subject: Re: [PATCH net 1/2] net/sched: cls_u32: fix refcount leak in the
 error path of u32_change()

On 2019-12-20 7:25 a.m., Jamal Hadi Salim wrote:
> On 2019-12-20 7:11 a.m., Jamal Hadi Salim wrote:
> 
>> I see both as complementing each other. delete_empty()
>> could serves like guidance almost for someone who wants to implement
>> parallelization (and stops abuse of walk()) and
>> TCF_PROTO_OPS_DOIT_UNLOCKED is more of a shortcut. IOW, you
>> could at the top of tcf_proto_check_delete() return true
>> if TCF_PROTO_OPS_DOIT_UNLOCKED is set while still invoking
> 
> 
> Something like attached...

Vlad,
I tested this and it seems to fix the issue. But there may be
other consequences...

cheers,
jamal