Re: -next20181010,1011 regression: thinkpad x60 (32 bit) dies during boot.

From: Ingo Molnar
Date: Fri Oct 12 2018 - 06:53:01 EST



* Pavel Machek <pavel@xxxxxx> wrote:

> Hi!
>
> > > > > I updated to todays next... and boot crashes with
> > > > >
> > > > > ..
> > > > > Call Trace:
> > > > > kick_ilb
> > > > > trigger_load_balance
> > > > > ? active_load..
> > > > > scheduler_tick
> > > > > update_process_times
> > > > > tick_nohz_handler
> > > > >
> > > > > -next20181005 worked ok.
> > >
> > > Problem is still there in today's next.
> >
> > So what came in between -next20181005 and the first bad one? kernel/sched/*
> > being the first place to look at.
>
> kernel/sched does not seem to contain anything too scary.
>
> I know that -next20181005 works ok, and I know -next20181010 is
> bad. Is there easy way to bisect using that information? I can do
> bisect between -next and mainline, but that's a lot of patches and
> thus not much fun :-(.
>
> In the meantime, I reproduced the failure with T40p. Is there someone
> with working x86-32 in -next?

Does latest -tip fail too? If yes then I suspect bisection would be needed.

Thanks,

Ingo