Re: Bisected regression (Was Re: current -git fails to boot on nehalem-ex)

[Yinghai]

On Dec 10, 2009, at 8:06 AM, Ingo Molnar <mingo@xxxxxxx> wrote:

> * Jens Axboe <jens.axboe@xxxxxxxxxx> wrote:
>
> > On Thu, Dec 10 2009, Jens Axboe wrote:
> > > Hi,
> > >
> > > As written in the subject, it just hard hangs before writing  
> > > anything on
> > > the console. With earlyprintk, I captured the failure, see below.
> > >
> > > I'll try and bisect this, but it takes some time (since the bios and
> > > post process takes forever). I just updated the firmware on the  
> > > box as
> > > well, but it did boot 2.6.32 (and RHEL5 boots fine too). Of course  
> > > that
> > > doesn't rule out a BIOS bug.
> >
> > Results are persistent, git bisect points to:
> >
> > commit b24c2a925a9837cccf54d50aeac22ba0cbc15455
> > Author: Yinghai Lu <yinghai@xxxxxxxxxx>
> > Date:   Tue Nov 24 02:48:18 2009 -0800
> >
> >    x86: Move find_smp_config() earlier and avoid bootmem usage
> >
> > which appears consistent with the panic(). Reverting that does indeed
> > make current -git boot properly.
>
> Thanks. Yinghai, do you have any ideas, or should we revert it?
Let find the root cause

Jen

Can you boot with earlyconsole or earlyprintk and debug?

YH
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/