Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
Date:   Tue, 8 Dec 2020 23:40:44 +0100 (CET)
From:   Julia Lawall <julia.lawall@inria.fr>
To:     Linus Torvalds <torvalds@linux-foundation.org>
cc:     John Garry <john.garry@huawei.com>,
        "Martin K. Petersen" <martin.petersen@oracle.com>,
        "James E.J. Bottomley" <jejb@linux.ibm.com>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        nicolas.palix@univ-grenoble-alpes.fr,
        linux-scsi <linux-scsi@vger.kernel.org>,
        Kashyap Desai <kashyap.desai@broadcom.com>,
        Ming Lei <ming.lei@redhat.com>
Subject: Re: problem booting 5.10
In-Reply-To: <CAHk-=wjsWB612YA0OSpVPkzePxQWyqcSGDaY1-x3R2AgjOCqSQ@mail.gmail.com>
Message-ID: <alpine.DEB.2.22.394.2012082339470.16458@hadrien>
References: <alpine.DEB.2.22.394.2012081813310.2680@hadrien> <CAHk-=wi=R7uAoaVK9ewDPdCYDn1i3i19uoOzXEW5Nn8UV-1_AA@mail.gmail.com> <yq1sg8gunxy.fsf@ca-mkp.ca.oracle.com> <CAHk-=whThuW=OckyeH0rkJ5vbbbpJzMdt3YiMEE7Y5JuU1EkUQ@mail.gmail.com>
 <9106e994-bb4b-4148-1280-f08f71427420@huawei.com> <CAHk-=wjsWB612YA0OSpVPkzePxQWyqcSGDaY1-x3R2AgjOCqSQ@mail.gmail.com>
User-Agent: Alpine 2.22 (DEB 394 2020-01-19)
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Precedence: bulk


On Tue, 8 Dec 2020, Linus Torvalds wrote:

> On Tue, Dec 8, 2020 at 1:14 PM John Garry <john.garry@huawei.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,
julia