linux-kernel - Re: [PATCH v3] Bluetooth: Fix possible deadlock in rfcomm_sk_state

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Message-Id: <167346781697.28484.18153858601113924457.git-patchwork-notify@kernel.org>
Date:   Wed, 11 Jan 2023 20:10:16 +0000
From:   patchwork-bot+bluetooth@...nel.org
To:     Ying Hsu <yinghsu@...omium.org>
Cc:     linux-bluetooth@...r.kernel.org, marcel@...tmann.org,
        leon@...nel.org, luiz.dentz@...il.com,
        chromeos-bluetooth-upstreaming@...omium.org, davem@...emloft.net,
        edumazet@...gle.com, kuba@...nel.org, johan.hedberg@...il.com,
        pabeni@...hat.com, tedd.an@...el.com, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org
Subject: Re: [PATCH v3] Bluetooth: Fix possible deadlock in rfcomm_sk_state_change

Hello:

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

On Wed, 11 Jan 2023 03:16:14 +0000 you wrote:
> syzbot reports a possible deadlock in rfcomm_sk_state_change [1].
> While rfcomm_sock_connect acquires the sk lock and waits for
> the rfcomm lock, rfcomm_sock_release could have the rfcomm
> lock and hit a deadlock for acquiring the sk lock.
> Here's a simplified flow:
> 
> rfcomm_sock_connect:
>   lock_sock(sk)
>   rfcomm_dlc_open:
>     rfcomm_lock()
> 
> [...]

Here is the summary with links:
  - [v3] Bluetooth: Fix possible deadlock in rfcomm_sk_state_change
    https://git.kernel.org/bluetooth/bluetooth-next/c/7ed38304a633

You are awesome, thank you!
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