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

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Mon, Feb 21, 2011 at 05:55:41PM +0100, Guido Hecken wrote:
> Konrad,
> 
> thanks for the fast response and your hint.
> I suppose, I 'll have to recompile the debian standard kernel to integrate 
> these patches or did I miss something?
> If so, this drives me back to a non-standard system which I can't update by 
> normal system-tools without taking special care.
> Is there any other way to integrate these patches?
> 

That's why Debian needs to integrate those patches to their kernel.
They've been in xen/stable-2.6.32.x branch for around 5 months already.

-- Pasi

> regards,
> Guido
> 
> -----Ursprüngliche Nachricht-----
> Von: Konrad Rzeszutek Wilk [mailto:konrad.wilk@xxxxxxxxxx] 
> Gesendet: Montag, 21. Februar 2011 17:16
> An: Guido Hecken
> Cc: Pasi Kärkkäinen; xen-devel@xxxxxxxxxxxxxxxxxxx
> Betreff: Re: [Xen-devel] [Xen-dev] kernel BUG at arch/x86/xen/mmu.c:1860!
> 
> 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".
> 
> 
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