linux-kernel - Re: [stable] PROBLEM: [BISECTED] 2.6.35.5 xen domU panics just after the boot

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Date:	Wed, 29 Sep 2010 17:06:44 -0700
From:	Greg KH <greg@...ah.com>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
Cc:	Kyle McMartin <kyle@...hat.com>, stable@...nel.org,
	Jeremy Fitzhardinge <jeremy.fitzhardinge@...rix.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	James Dingwall <james.dingwall@...ocs.com>
Subject: Re: [stable] PROBLEM: [BISECTED] 2.6.35.5 xen domU panics just
	after the boot

On Wed, Sep 29, 2010 at 08:48:07AM -0700, Jeremy Fitzhardinge wrote:
>  On 09/28/2010 11:29 AM, Greg KH wrote:
> > On Mon, Sep 27, 2010 at 11:08:43AM -0700, Jeremy Fitzhardinge wrote:
> >>  On 09/26/2010 11:13 PM, Greg KH wrote:
> >>> On Sun, Sep 26, 2010 at 10:40:44PM -0400, Kyle McMartin wrote:
> >>>> On Thu, Sep 23, 2010 at 04:23:55PM +0100, James Dingwall wrote:
> >>>>>> I was experiencing the same immediate crash with a null pointer
> >>>>>> dereference (log below) on boot with 2.6.35.5.  Reverting
> >>>>>> fb412a178502dc498430723b082a932f797e4763 also resolved the problem for
> >>>>>> me.
> >>>>> Checking the diff from this commit it looks like there is a typo in the patch.  With the following (probably mangled by my client) I get 2.6.35.5 to boot.  Suggest it should be a candidate for .32 and .35 stable trees.
> >>>>>
> >>>> Greg, a spelling mistake cropped into this patch during 2.6.35.5 that
> >>>> James here points out. Adding you to CC since it seems to have missed
> >>>> stable 2.6.35.6...
> >>>>
> >>>> Was in xen-use-percpu-interrupts-for-ipis-and-virqs.patch.
> >>> I don't understand, where did the error come from?  Was it in a patch I
> >>> applied, or did I mess up some patch?  Is the same problem upstream, and
> >>> if not, why not?
> >> I don't know.  It looks like an 'x' was deleted due to an editor
> >> fat-finger or something.  The original upstream patches were cc:d to
> >> stable, so I think you would have got them that way (ie, I don't think I
> >> sent them to you specifically).  Is there an opportunity in your
> >> workflow where this error could have crept in?  The patches should have
> >> been a pretty clean 'git cherry-pick' with no conflicts.
> > Sorry, I don't know what happened, using my scripts, it does drop to an
> > editor so I can add the "signed-off-by" line, so perhaps I accidentally
> > did this in there.
> >
> > It's now in the -stable queue and I'll push out new releases in a few
> > hours.
> >
> 
> I should have pointed out it is the same in the stable-2.6.32 tree as well.

Yes, sorry, I know, I only had the chance to get the .35 release out
yesterday, I'll do the .32 one now.

thanks,

greg k-h
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