netdev - Re: [PATCH net 0/3] net/sched: teql: Enforce hierarchy placement

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Message-Id: 
 <176885400979.123996.17622042838765819298.git-patchwork-notify@kernel.org>
Date: Mon, 19 Jan 2026 20:20:09 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Jamal Hadi Salim <jhs@...atatu.com>
Cc: davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
 pabeni@...hat.com, horms@...nel.org, andrew+netdev@...n.ch,
 netdev@...r.kernel.org, xiyou.wangcong@...il.com, jiri@...nulli.us,
 victor@...atatu.com, km.kim1503@...il.com, security@...nel.org
Subject: Re: [PATCH net 0/3] net/sched: teql: Enforce hierarchy placement

Hello:

This series was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@...nel.org>:

On Wed, 14 Jan 2026 11:02:40 -0500 you wrote:
> GangMin Kim <km.kim1503@...il.com> managed to create a UAF on qfq by inserting
> teql as a child qdisc and exploiting a qlen sync issue.
> teql is not intended to be used as a child qdisc. Lets enforce that rule in
> patch #1. Although patch #1 fixes the issue, we prevent another potential qlen
> exploit in qfq in patch #2 by enforcing the child's active status is not
> determined by inspecting the qlen. In patch #3 we add a tdc test case.
> 
> [...]

Here is the summary with links:
  - [net,1/3] net/sched: Enforce that teql can only be used as root qdisc
    https://git.kernel.org/netdev/net/c/50da4b9d07a7
  - [net,2/3] net/sched: qfq: Use cl_is_active to determine whether class is active in qfq_rm_from_ag
    https://git.kernel.org/netdev/net/c/d837fbee9245
  - [net,3/3] selftests/tc-testing: Try to add teql as a child qdisc
    https://git.kernel.org/netdev/net/c/2460f31e6e44

You are awesome, thank you!
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