linux-kernel - Re: [PATCH net] ptp: ocp: fix use-after-free bugs causing by ptp_ocp

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Message-Id: 
 <175652041099.2398246.16448506468320735865.git-patchwork-notify@kernel.org>
Date: Sat, 30 Aug 2025 02:20:10 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Duoming Zhou <duoming@....edu.cn>
Cc: linux-kernel@...r.kernel.org, netdev@...r.kernel.org, pabeni@...hat.com,
 kuba@...nel.org, edumazet@...gle.com, davem@...emloft.net,
 andrew+netdev@...n.ch, vadim.fedorenko@...ux.dev, jonathan.lemon@...il.com,
 richardcochran@...il.com
Subject: Re: [PATCH net] ptp: ocp: fix use-after-free bugs causing by
 ptp_ocp_watchdog

Hello:

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

On Thu, 28 Aug 2025 16:29:49 +0800 you wrote:
> The ptp_ocp_detach() only shuts down the watchdog timer if it is
> pending. However, if the timer handler is already running, the
> timer_delete_sync() is not called. This leads to race conditions
> where the devlink that contains the ptp_ocp is deallocated while
> the timer handler is still accessing it, resulting in use-after-free
> bugs. The following details one of the race scenarios.
> 
> [...]

Here is the summary with links:
  - [net] ptp: ocp: fix use-after-free bugs causing by ptp_ocp_watchdog
    https://git.kernel.org/netdev/net/c/8bf935cf7898

You are awesome, thank you!
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