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Re: [Xen-devel] Investigating a SLES11 guest crash



>>> On 13.09.13 at 13:50, Andrew Cooper <andrew.cooper3@xxxxxxxxxx> wrote:
> On 13/09/2013 12:34, Andrew Bennieston wrote:
>> On 13/09/13 12:14, Sander Eikelenboom wrote:
>>> Not by any chance running a 3.12 merge window kernel ?
>> Nope, the regular SLES11 SP0 2.6.27 kernel.
> 
> Some thinks should be pointed out.
> 
> This crash is because the guest takes a pagefault before setting up a
> pagefault handler.
> 
> 9 times in 10, the guest boots perfectly well.

Which suggests e.g. an issue with preemption handling.

Is, if it crashes, the crash signature always the same?

> This crash is *only* visible with a debug build of Xen, and is a
> regression from 4.1
> 
> The point of this query is to find out whether there is a bug in the
> identified Xen changeset, or whether it simply exposed some other bug.

Very likely the latter.

Jan



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