Re: [PATCH -next] phy: phy-twl4030-usb: Fix possible use-after-free in twl4030_usb_remove()
From: Vinod Koul
Date: Mon Apr 12 2021 - 01:05:29 EST
On 07-04-21, 17:27, Yang Yingliang wrote:
> This driver's remove path calls cancel_delayed_work(). However, that
> function does not wait until the work function finishes. This means
> that the callback function may still be running after the driver's
> remove function has finished, which would result in a use-after-free.
>
> Fix by calling cancel_delayed_work_sync(), which ensures that
> the work is properly cancelled, no longer running, and unable
> to re-schedule itself.
Applied, thanks
--
~Vinod