linux-kernel - Re: [PATCH net v3] linkwatch: use __dev

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Message-Id: 
 <177008100538.1258089.15333188222179575362.git-patchwork-notify@kernel.org>
Date: Tue, 03 Feb 2026 01:10:05 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Jiayuan Chen <jiayuan.chen@...ux.dev>
Cc: netdev@...r.kernel.org, jiayuan.chen@...pee.com,
 syzbot+1ec2f6a450f0b54af8c8@...kaller.appspotmail.com, davem@...emloft.net,
 edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com, horms@...nel.org,
 sdf@...ichev.me, marco.crivellari@...e.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net v3] linkwatch: use __dev_put() in callers to prevent
 UAF

Hello:

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

On Sun,  1 Feb 2026 21:59:10 +0800 you wrote:
> From: Jiayuan Chen <jiayuan.chen@...pee.com>
> 
> After linkwatch_do_dev() calls __dev_put() to release the linkwatch
> reference, the device refcount may drop to 1. At this point,
> netdev_run_todo() can proceed (since linkwatch_sync_dev() sees an
> empty list and returns without blocking), wait for the refcount to
> become 1 via netdev_wait_allrefs_any(), and then free the device
> via kobject_put().
> 
> [...]

Here is the summary with links:
  - [net,v3] linkwatch: use __dev_put() in callers to prevent UAF
    https://git.kernel.org/netdev/net/c/83b67cc9be92

You are awesome, thank you!
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