linux-kernel - Re: [i915] b12d691ea5: kernel_BUG_at

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Message-ID: <CAHk-=wgEZrsY9tsyC=+2sXVVuBDiZDTSMxt-X5LgwvSQqs_a6w@mail.gmail.com>
Date:   Wed, 19 May 2021 06:31:31 -1000
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Kalle Valo <kvalo@...eaurora.org>
Cc:     Christoph Hellwig <hch@....de>,
        kernel test robot <oliver.sang@...el.com>,
        Thomas Hellström 
        <thomas.hellstrom@...ux.intel.com>,
        Serge Belyshev <belyshev@...ni.sinp.msu.ru>,
        Chris Wilson <chris@...is-wilson.co.uk>,
        Daniel Vetter <daniel.vetter@...ll.ch>,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        LKML <linux-kernel@...r.kernel.org>, lkp@...ts.01.org,
        kernel test robot <lkp@...el.com>,
        regressions@...ts.linux.dev
Subject: Re: [i915] b12d691ea5: kernel_BUG_at_mm/memory.c

On Wed, May 19, 2021 at 6:11 AM Linus Torvalds
<torvalds@...ux-foundation.org> wrote:
>
> On Wed, May 19, 2021 at 5:00 AM Kalle Valo <kvalo@...eaurora.org> wrote:
> >
> > Christoph Hellwig <hch@....de> writes:
> >
> > > On Tue, May 18, 2021 at 04:58:31PM -1000, Linus Torvalds wrote:
> > >>
> > >> I'd be inclined to revert the commits as "not ready yet", but it would
> > >> be better if somebody can go "yeah, this should be done properly like
> > >> X".
> > >
> > > I think reverting just this commit for now is the best thing.
> >
> > Yes, please revert it if there's no quick fix. On my Dell XPS 13 9310
> > laptop (with Debian 10) X won't start until I revert commit
> > b12d691ea5e0, so this is a major issue.
>
> Reverted.

Oh, and Christoph - there were a couple of preparatory patches before
that one. They all looked syntactic to me, but it might be best to
check that reverting just this one commit is ok?

                   Linus