netdev - Re: [PATCH net-next v2 0/5] net/sched: improve class lifetime handling

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Date: Tue, 01 Aug 2023 09:10:22 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Pedro Tammela <pctammela@...atatu.com>
Cc: netdev@...r.kernel.org, davem@...emloft.net, edumazet@...gle.com,
 kuba@...nel.org, pabeni@...hat.com, jhs@...atatu.com,
 xiyou.wangcong@...il.com, jiri@...nulli.us
Subject: Re: [PATCH net-next v2 0/5] net/sched: improve class lifetime handling

Hello:

This series was applied to netdev/net-next.git (main)
by Paolo Abeni <pabeni@...hat.com>:

On Fri, 28 Jul 2023 12:35:32 -0300 you wrote:
> Valis says[0]:
> ============
> Three classifiers (cls_fw, cls_u32 and cls_route) always copy
> tcf_result struct into the new instance of the filter on update.
> 
> This causes a problem when updating a filter bound to a class,
> as tcf_unbind_filter() is always called on the old instance in the
> success path, decreasing filter_cnt of the still referenced class
> and allowing it to be deleted, leading to a use-after-free.
> ============
> 
> [...]

Here is the summary with links:
  - [net-next,v2,1/5] net/sched: wrap open coded Qdics class filter counter
    https://git.kernel.org/netdev/net-next/c/8798481b667f
  - [net-next,v2,2/5] net/sched: sch_drr: warn about class in use while deleting
    https://git.kernel.org/netdev/net-next/c/daf8d9181b9b
  - [net-next,v2,3/5] net/sched: sch_hfsc: warn about class in use while deleting
    https://git.kernel.org/netdev/net-next/c/8e4553ef3ed5
  - [net-next,v2,4/5] net/sched: sch_htb: warn about class in use while deleting
    https://git.kernel.org/netdev/net-next/c/7118f56e04d4
  - [net-next,v2,5/5] net/sched: sch_qfq: warn about class in use while deleting
    https://git.kernel.org/netdev/net-next/c/e20e75017c5a

You are awesome, thank you!
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