Re: 5.17.0 boot issue on Miata

[Michael Cree <mcree@orcon.net.nz>]

On Mon, Apr 04, 2022 at 08:42:38PM -0500, Bob Tracy wrote:
> On Sun, Mar 27, 2022 at 11:21:57AM +1300, Michael Cree wrote:
> > On Thu, Mar 24, 2022 at 09:54:15PM -0500, Bob Tracy wrote:
> > > When I attempt to boot a 5.17.0 kernel built from the kernel.org
> > > sources, I see disk sector errors on my "sda" device, and the boot
> > > process hangs at the point where "systemd-udevd.service" starts.
> > > 
> > > Rebooting on 5.16.0 works with no disk I/O errors of any kind.
> > 
> > Oh, you can run a 5.16.y kernel on Alpha?  I have had problems
> > with everything since 5.9.y with rare, random, corruptions in
> > memory in user space (exhibiting as glibc detected memory
> > corruptions or segfaults).
> 
> Did we have this painted into the "SMP vs. not-SMP" corner at one point?

No, this affects both ES45 (with 3 cpus) and XP1000 (one cpu).

The problem is rare. I often have to run tests for 12 hours on
the XP1000 before I see a problem.  On miata it might occur even
less often.

I hope I am getting close to the bad commit, but it is taking
time when I run testing for a whole day before I feel confident
enough to mark the kernel as good.  And I have been wrong on
that one a couple of times now, having to repeat part of the
bisection.

Cheers,
Michael.