Re: kobject (ffff88003ffbb4b8): tried to init an initialized object,something is seriously wrong.

From: Greg KH
Date: Mon Feb 06 2012 - 13:37:04 EST


On Mon, Feb 06, 2012 at 01:20:40PM -0500, Konrad Rzeszutek Wilk wrote:
> On Fri, Feb 03, 2012 at 01:42:35PM -0800, Greg KH wrote:
> > On Fri, Feb 03, 2012 at 01:39:49PM -0800, Greg KH wrote:
> > > On Fri, Feb 03, 2012 at 03:59:53PM -0500, Konrad Rzeszutek Wilk wrote:
> > > > Hey Greg,
> > > >
> > > > With or without your previous patch (the one that added an cpu_device_release
> > > > function) I am getting this in 3.3-rc2. I did not get this in 3.2.
> > > >
> > > > I added some extra printks to make sure that the handle_vcpu_hotplug_event
> > > > code actually did call 'arch_unregister_cpu' which is certainly looks
> > > > to be doing.
> > > >
> > > > I hadn't done a bisection yet, but was wondering if this is related
> > > > to the previous issues with the sysdev. Or kobject getting more observant.
> > >
> > > No, it's related to the previous issue, let me knock up a patch to fix
> > > this as well...
> >
> > Does this patch solve the problem for you?
>
> Yeah, no warnings. But neither is the CPU coming back up :-(

Very wierd.

> Thought that might be related to something else - let me double check
> with 3.2 whether there are some race-conditions that I might be hitting.

Ok, I'll wait to queue this up until you get back to me.

greg k-h
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