netdev - Re: [PATCH net,v2] net/sched: taprio: fix slab-out-of-bounds Read in taprio_dequeue_from

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Date: Fri, 09 Jun 2023 09:50:21 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: shaozhengchao <shaozhengchao@...wei.com>
Cc: netdev@...r.kernel.org, vinicius.gomes@...el.com, jhs@...atatu.com,
 xiyou.wangcong@...il.com, jiri@...nulli.us, davem@...emloft.net,
 edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com,
 vladimir.oltean@....com, weiyongjun1@...wei.com, yuehaibing@...wei.com
Subject: Re: [PATCH net,v2] net/sched: taprio: fix slab-out-of-bounds Read in
 taprio_dequeue_from_txq

Hello:

This patch was applied to netdev/net.git (main)
by David S. Miller <davem@...emloft.net>:

On Thu, 8 Jun 2023 14:27:56 +0800 you wrote:
> As shown in [1], out-of-bounds access occurs in two cases:
> 1)when the qdisc of the taprio type is used to replace the previously
> configured taprio, count and offset in tc_to_txq can be set to 0. In this
> case, the value of *txq in taprio_next_tc_txq() will increases
> continuously. When the number of accessed queues exceeds the number of
> queues on the device, out-of-bounds access occurs.
> 2)When packets are dequeued, taprio can be deleted. In this case, the tc
> rule of dev is cleared. The count and offset values are also set to 0. In
> this case, out-of-bounds access is also caused.
> 
> [...]

Here is the summary with links:
  - [net,v2] net/sched: taprio: fix slab-out-of-bounds Read in taprio_dequeue_from_txq
    https://git.kernel.org/netdev/net/c/be3618d96510

You are awesome, thank you!
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