netdev - Re: [PATCH v5 net 6/6] net/sched: qdisc_destroy() old ingress and clsact Qdiscs before grafting

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Date: Fri, 26 May 2023 19:33:24 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: Peilin Ye <yepeilin.cs@...il.com>
Cc: Pedro Tammela <pctammela@...atatu.com>, Jamal Hadi Salim
 <jhs@...atatu.com>, "David S. Miller" <davem@...emloft.net>, Eric Dumazet
 <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>, Cong Wang
 <xiyou.wangcong@...il.com>, Jiri Pirko <jiri@...nulli.us>, Peilin Ye
 <peilin.ye@...edance.com>, Daniel Borkmann <daniel@...earbox.net>, John
 Fastabend <john.fastabend@...il.com>, Hillf Danton <hdanton@...a.com>,
 netdev@...r.kernel.org, Cong Wang <cong.wang@...edance.com>, Vlad Buslov
 <vladbu@...dia.com>
Subject: Re: [PATCH v5 net 6/6] net/sched: qdisc_destroy() old ingress and
 clsact Qdiscs before grafting

On Fri, 26 May 2023 16:09:51 -0700 Peilin Ye wrote:
> Thanks a lot, I'll get right on it.

Any insights? Is it just a live-lock inherent to the retry scheme 
or we actually forget to release the lock/refcnt?