Re: [Fastboot] Re: Kexec on 2.5.59 problems ?

Eric W. Biederman
2003-02-10T17:57:42Z

Andy Pfiffer <andyp@osdl.org> writes:

> On Mon, 2003-02-10 at 03:14, Suparna Bhattacharya wrote:
> > I am using the OSDL versions of the kexec patches for
> > 2.5.59 (plm 1442 and 1444) for lkcd-kexec based crash dump
> > work.
>
> <snip>
>
> >
> > Surprisingly though, when I tried just a simple
> > kexec -e today (having loaded the kernel earlier on),
> > I ran into the following Oops, consistently:
> >
> > I'm using kexec-tools-1.8, and this has worked for me
> > earlier. The test system is a 4way SMP machine.
> >
> > Has anyone seen this as well ? (I'd already issued init 1
> > and unmounted filesystems by this point)

Hmm. Would love to know which cpu this is on...

I think the primary candidate if this only occurs in smp is
the switch_mm. It may be that modifying the init_mm is not safe,
or it gets zapped somewhere else.

As soon as I get distractions in other directions under control
I will take a look.

Eric