linux-kernel - Re: [PATCH v2 net] octeontx2-pf: Fix use-after-free bugs in otx2_sync

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Message-Id: 
 <175820761599.2450229.12360019578497967882.git-patchwork-notify@kernel.org>
Date: Thu, 18 Sep 2025 15:00:15 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Duoming Zhou <duoming@....edu.cn>
Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org, pabeni@...hat.com,
 kuba@...nel.org, edumazet@...gle.com, davem@...emloft.net,
 sgoutham@...vell.com, gakula@...vell.com, sbhatta@...vell.com,
 hkelam@...vell.com, bbhushan2@...vell.com, andrew+netdev@...n.ch,
 richardcochran@...il.com, naveenm@...vell.com
Subject: Re: [PATCH v2 net] octeontx2-pf: Fix use-after-free bugs in
 otx2_sync_tstamp()

Hello:

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

On Wed, 17 Sep 2025 14:38:53 +0800 you wrote:
> The original code relies on cancel_delayed_work() in otx2_ptp_destroy(),
> which does not ensure that the delayed work item synctstamp_work has fully
> completed if it was already running. This leads to use-after-free scenarios
> where otx2_ptp is deallocated by otx2_ptp_destroy(), while synctstamp_work
> remains active and attempts to dereference otx2_ptp in otx2_sync_tstamp().
> Furthermore, the synctstamp_work is cyclic, the likelihood of triggering
> the bug is nonnegligible.
> 
> [...]

Here is the summary with links:
  - [v2,net] octeontx2-pf: Fix use-after-free bugs in otx2_sync_tstamp()
    https://git.kernel.org/netdev/net/c/f8b468715102

You are awesome, thank you!
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