linux-kernel - Re: [PATCH] rtc: fix use-after-free on device removal

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Message-Id: <164496294249.63790.9626913004798028224.b4-ty@bootlin.com>
Date:   Tue, 15 Feb 2022 23:09:11 +0100
From:   Alexandre Belloni <alexandre.belloni@...tlin.com>
To:     Alessandro Zummo <a.zummo@...ertech.it>,
        Vincent Whitchurch <vincent.whitchurch@...s.com>
Cc:     Alexandre Belloni <alexandre.belloni@...tlin.com>, kernel@...s.com,
        linux-rtc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] rtc: fix use-after-free on device removal

On Fri, 10 Dec 2021 17:09:51 +0100, Vincent Whitchurch wrote:
> If the irqwork is still scheduled or running while the RTC device is
> removed, a use-after-free occurs in rtc_timer_do_work().  Cleanup the
> timerqueue and ensure the work is stopped to fix this.
> 
>  BUG: KASAN: use-after-free in mutex_lock+0x94/0x110
>  Write of size 8 at addr ffffff801d846338 by task kworker/3:1/41
> 
> [...]

Applied, thanks!

[1/1] rtc: fix use-after-free on device removal
      commit: c8fa17d9f08a448184f03d352145099b5beb618e

Best regards,
-- 
Alexandre Belloni <alexandre.belloni@...tlin.com>