[Xen-users] Kernel paging request error

[kossy1 <kossy1@xxxxx>]

I'm having a problem with: http://pastebin.com/CuGHqwhy
It occurs on the reboot, but sometimes, when I try to start manually one of my 
machines. Sometime, one of the machines does not want to start permanently and 
I have to reinstall/restore it.
This problem comes for me randomly, but maybe there is a trigger. 
I've tried to follow: 
http://xen.1045712.n5.nabble.com/2-6-32-27-dom0-BUG-unable-to-handle-kernel-paging-request-td3323011.html
and raise /proc/sys/vm/min_free_kbytes, but it did not help.

System info:
Debian, Linux dom0 3.2.0-0.bpo.3-amd64
i  libxenstore3.0                       4.0.1-5.4                    Xenstore 
communications library for Xen
ii  xen-hypervisor-4.0-amd64             4.0.1-5.4                    The Xen 
Hypervisor on AMD64
ii  xen-linux-system-3.2.0-0.bpo.3-amd64 3.2.23-1~bpo60+2             Xen 
system with Linux 3.2 on 64-bit PCs (meta-package)
ii  xen-linux-system-amd64               3.2+45~bpo60+1               Xen 
system with Linux for 64-bit PCs (meta-package)
ii  xen-tools                            4.2-1                        Tools to 
manage Xen virtual servers
ii  xen-utils-4.0                        4.0.1-5.4                    XEN 
administrative tools
ii  xen-utils-common                     4.0.0-1                      XEN 
administrative tools - common files
ii  xenstore-utils                       4.0.1-5.4                    Xenstore 
utilities for Xen
ii  xenwatch                             0.5.4-2                      
Virtualization utilities, mostly for Xen


Any advices how to solve ?
Can it be a hardware problem with RAM ?

Regards
Slawek

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