Comment 20 for bug 252977

On Fri, Nov 28, 2008 at 05:12:49AM -0000, Richard Corner wrote:

> OK, since the early releases of Intrepid I have not had this particular
> problem. Though there have been a lot of freezeups during boot on this
> particular machine I have not seen the "Eeek!" message or the freezeups
> while using the desktop.
>
> But today I upgraded to the following:
>
> Linux blackbox 2.6.27-9-generic #1 SMP Thu Nov 20 21:57:00 UTC 2008 i686
> GNU/Linux
>
> and the error is back! Xubuntu booted fine then, as before with Hardy,
> suddenly froze while I was using Firefox at the desktop.
>
> See the attached syslog:
>
> Nov 27 23:57:32 blackbox kernel: [ 174.153965] Eeek! page_mapcount(page) went negative! (-1)
> Nov 27 23:57:32 blackbox kernel: [ 174.153981] page pfn = a6ff3
> Nov 27 23:57:32 blackbox kernel: [ 174.153986] page->flags = 80000068
> Nov 27 23:57:32 blackbox kernel: [ 174.153993] page->count = 1
> Nov 27 23:57:32 blackbox kernel: [ 174.153997] page->mapping = f33734e1
> Nov 27 23:57:32 blackbox kernel: [ 174.154038] vma->vm_ops = 0x0

It seems that you have a relativly reproducible one here. As its so
easy to trigger for you would you be able to try the newer kernel in
-proposed, currently 2.6.27-10.20 and confirm if it is there too?