linux-kernel - Re: [PATCH v2 1/1] Bluetooth: fix race condition in hidp_session

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Date:   Tue, 07 Mar 2023 18:40:22 +0000
From:   patchwork-bot+bluetooth@...nel.org
To:     Min Li <lm0963hack@...il.com>
Cc:     luiz.dentz@...il.com, marcel@...tmann.org, johan.hedberg@...il.com,
        davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
        pabeni@...hat.com, jkosina@...e.cz, hdegoede@...hat.com,
        david.rheinsberg@...il.com, wsa+renesas@...g-engineering.com,
        linux@...ssschuh.net, linux-bluetooth@...r.kernel.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/1] Bluetooth: fix race condition in hidp_session_thread

Hello:

This patch was applied to bluetooth/bluetooth-next.git (master)
by Luiz Augusto von Dentz <luiz.von.dentz@...el.com>:

On Sat,  4 Mar 2023 22:23:30 +0800 you wrote:
> There is a potential race condition in hidp_session_thread that may
> lead to use-after-free. For instance, the timer is active while
> hidp_del_timer is called in hidp_session_thread(). After hidp_session_put,
> then 'session' will be freed, causing kernel panic when hidp_idle_timeout
> is running.
> 
> The solution is to use del_timer_sync instead of del_timer.
> 
> [...]

Here is the summary with links:
  - [v2,1/1] Bluetooth: fix race condition in hidp_session_thread
    https://git.kernel.org/bluetooth/bluetooth-next/c/4bbfb9fefadf

You are awesome, thank you!
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