Re: 5.11 new lockdep warning related to led-class code (also may involve ata / piix controller)

From: Pavel Machek
Date: Tue Feb 02 2021 - 04:33:45 EST


Hi!

> > Is it a regression? AFAIK it is a bug that has been there
> > forever... My original plan was to simply wait for 5.12, so it gets
> > full release of testing...
>
> It may have been a pre-existing bug which got triggered by libata
> changes?

Fixes tag suggests it is rather old.

> I don't know. I almost always run all my locally build kernels with lockdep
> enabled and as the maintainer of the vboxvideo, vboxguest and vboxsf guest
> drivers in the mainline kernel I quite often boot local build kernels inside
> a vm.
>
> So I believe that lockdep tripping over this is new in 5.11, which is why
> I called it a regression.
>
> And the fix seems very safe and simple, so IMHO it would be good to get
> this into 5.11

It is in 5.11 now, and also -stable kernels. (Which suprised me a
bit).

Testing would be welcome.

Best regards,
Pavel
--
http://www.livejournal.com/~pavelmachek

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