Re: [Xen-devel] Kernel paging request error

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Tue, 2012-10-23 at 19:44 +0100, SÅawek Kosowski wrote:
> Reposting from xen-users (no response)
> 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.

One experiment to try, based on Debian bug #642154 would be to try
"noxsave" and/or "noxsaveopt" on your kernel command line. Please try
each independently and both together.

I thought this sort of thing was ironed out before 3.2. Since you are
running a bpo kernel you could also consider running a backport of Xen
4.1 from Wheezy as well.

> 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.

That is a completely unrelated problem, "BUG unable to handle kernel
paging request" is a very generic error message which is common to loads
of different potential issues.

[...]

Ian.


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