Re: [PATCH v8 0/2] gpiolib: don't allow user-space to crash the kernel with hot-unplugs

From: Andy Shevchenko
Date: Mon Dec 05 2022 - 07:59:52 EST


On Mon, Dec 05, 2022 at 01:39:01PM +0100, Bartosz Golaszewski wrote:
> From: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx>
>
> Linus Torvalds pointed out that using trylock here is wrong. This iteration
> drops it in favor of unconditional locks but keeps all the fixes that came
> later.
>
> I will also not send it for this release but make it part of the updates PR
> for v6.2 to give it some time in next.
>
> v7 -> v8:
> - don't use down_read_trylock(), just go straight for a full lock

Yep, it was a good wrap-up explanation.

--
With Best Regards,
Andy Shevchenko