Re: [Xen-devel] [Xen-dev] kernel BUG at arch/x86/xen/mmu.c:1860!

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Mon, Feb 21, 2011 at 11:15:39AM -0500, Konrad Rzeszutek Wilk wrote:
> On Mon, Feb 21, 2011 at 02:58:53PM +0100, Guido Hecken wrote:
> > Pasi,
> > thanks for the quick response.
> > 
> > As mentioned in previous posts, creating and afterwards deleting snapshots 
> > crashes the system.
> > I can do the following commands only twice, max. three times, before the 
> > server crashes.
> 
> You need these two patches:
> 
> b2464c422fb44275deeb5770b668351860f68e0e
> "x86: hold mm->page_table_lock while doing vmalloc_sync"
> a8bf92faf72dba6e0dd2130256cb81c3e68f672b
> "vmalloc: eagerly clear ptes on vunmap".
>

Sounds like someone should open a bugreport to debian 
to add these patches to their kernel.

Those patches have been in xen/stable-2.6.32.x branch for around 5 months..

-- Pasi


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