Re: tip -ENOBOOT - bisected to locking/refcounts, x86/asm: Implement fast refcount overflow protection

From: Ingo Molnar
Date: Tue Aug 29 2017 - 05:27:28 EST



* Mike Galbraith <efault@xxxxxx> wrote:

> On Tue, 2017-08-29 at 10:58 +0200, Ingo Molnar wrote:
> > * Mike Galbraith <efault@xxxxxx> wrote:
> >
> > > Greetings,
> > >
> > > Take 2 of KVM bisect as you work fingered $subject.  Take 1 was stymied
> > > by build dependencies (aa5d1b81, df340524) which I foolishly tried to
> > > skip, leading git bisect to end up handing me a list of commits that
> > > might be busted.  During take 2, I added those two as required.
> > >
> > > Symptom is a few splats as below, with box finally hanging.  Network
> > > comes up, but neither ssh nor console login is possible.
> >
> > Just to double check, does the patch below also cure the regression?
> > If we don't find the bug it might be safer than a full revert.
>
> I reverted it, and vbox now boots.  Should I still try the below?

Would be nice, so I can stick a Tested-by on it and such!

Thanks,

Ingo