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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:	Tue, 7 Feb 2012 17:34:38 -0800
From:	Greg KH <gregkh@...uxfoundation.org>
To:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: kobject (ffff88003ffbb4b8): tried to init an initialized object,
 something is seriously wrong.

On Tue, Feb 07, 2012 at 07:35:37PM -0500, Konrad Rzeszutek Wilk wrote:
> On Mon, Feb 06, 2012 at 10:29:56AM -0800, Greg KH wrote:
> > 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.
> 
> Found the culprit and have a patch for it. But it does not affect baremetal and
> it was in the drivers/xen/cpu_hotplug.c code - so 
> 
> > 
> > > 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.
> 
> .. you can go ahead and queue it up with my Tested-by tag. Thanks!

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