linux-kernel - Re: Random guest crashes since 5c34d002dcc7 ("virtio_pci: use shared interrupts for virtqueues")

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Date:   Wed, 05 Apr 2017 05:24:30 +0200
From:   Mike Galbraith <efault@....de>
To:     "Michael S. Tsirkin" <mst@...hat.com>
Cc:     Christoph Hellwig <hch@....de>,
        Thorsten Leemhuis <linux@...mhuis.info>,
        virtio-dev@...ts.oasis-open.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        rjones@...hat.com
Subject: Re: Random guest crashes since 5c34d002dcc7 ("virtio_pci: use
 shared interrupts for virtqueues")

On Wed, 2017-04-05 at 06:13 +0300, Michael S. Tsirkin wrote:
> On Wed, Apr 05, 2017 at 05:09:09AM +0200, Mike Galbraith wrote:
> > On Tue, 2017-04-04 at 22:03 +0300, Michael S. Tsirkin wrote:
> > 
> > > since I couldn't reproduce, I decided it's worth trying to see
> > > what happens if we revert back to before 5c34d002dcc7.
> > > 
> > > 
> > > Could you please test a tag "test" in my tree above?
> > > It should point at 6d88af1bf359417eb821370294ba489bdf7f5ab8
> > 
> > Nogo.
> > 
> > git@...er:..git/vhost> git remote update
> > Fetching origin
> > git@...er:..git/vhost> git show
> > 6d88af1bf359417eb821370294ba489bdf7f5ab8
> > fatal: bad object 6d88af1bf359417eb821370294ba489bdf7f5ab8
> 
> Maybe because it's a tag not a head. Pls try
> git fetch git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git
> refs/tags/test

That worked.  Checked out/building.