netdev - Re: [PATCH v1] net/sched: sch_qfq: Fix race condition on qfq

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Message-ID: <aGwMdlS0Y9R1MDsw@pop-os.localdomain>
Date: Mon, 7 Jul 2025 11:05:42 -0700
From: Cong Wang <xiyou.wangcong@...il.com>
To: Xiang Mei <xmei5@....edu>
Cc: netdev@...r.kernel.org, gregkh@...uxfoundation.org, jhs@...atatu.com,
	jiri@...nulli.us, security@...nel.org
Subject: Re: [PATCH v1] net/sched: sch_qfq: Fix race condition on
 qfq_aggregate

On Sat, Jul 05, 2025 at 03:49:41PM -0700, Xiang Mei wrote:
> Hi Cong,
> 
> This is a sch_tree_lock version of the patch. I agree with your point
> that it's unusual to use sch_tree_lock for aggregation. What do you
> think about applying RCU locks on agg pointers and using
> rcu_dereference_bh?

That requires more efforts, therefore should go to -net-next.

If you have time, you are welcome to work on this and send out a patch
for -net-next.

Thanks!