linux-kernel - Re: problem booting 5.10

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Message-ID: <ca63ada5-76a6-dae9-e759-838386831f83@kernel.dk>
Date:   Tue, 8 Dec 2020 15:47:00 -0700
From:   Jens Axboe <axboe@...nel.dk>
To:     Julia Lawall <julia.lawall@...ia.fr>
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        John Garry <john.garry@...wei.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        nicolas.palix@...v-grenoble-alpes.fr,
        linux-scsi <linux-scsi@...r.kernel.org>,
        Kashyap Desai <kashyap.desai@...adcom.com>,
        Ming Lei <ming.lei@...hat.com>
Subject: Re: problem booting 5.10

On Tue, Dec 8, 2020 at 3:42 PM Julia Lawall <julia.lawall@...ia.fr> wrote:
> On Tue, 8 Dec 2020, Linus Torvalds wrote:
>
> > On Tue, Dec 8, 2020 at 1:14 PM John Garry <john.garry@...wei.com> wrote:
> > >
> > > JFYI, About "scsi: megaraid_sas: Added support for shared host tagset
> > > for cpuhotplug", we did have an issue reported here already from Qian
> > > about a boot hang:
> >
> > Hmm. That does sound like it might be it.
> >
> > At this point, the patches from Ming Lei seem to be a riskier approach
> > than perhaps just reverting the megaraid_sas change?
> >
> > It looks like those patches are queued up for 5.11, and we could
> > re-apply the megaraid_sas change then?
> >
> > Jens, comments?
> >
> > And Julia - if it's that thing, then a
> >
> >     git revert 103fbf8e4020
> >
> > would be the thing to test.
>
> This solves the problem.  Starting from 5.10-rc7 and doing this
> revert, I get a kernel that boots.

Thanks for testing! Linus, do you just want to revert this, or do you
want me to queue it up?

-- 
Jens Axboe