Re: [Xen-devel] Help Debugging Xen Crash

[George Dunlap <dunlapg@xxxxxxxxx>]

The following thread has a discussion of setting up a serial console
for debugging, if you need it:

http://www.mailinglistarchive.com/html/xen-devel@xxxxxxxxxxxxxxxxxxx/2009-05/msg00004.html

 -George

On Tue, Jun 15, 2010 at 2:25 PM, Keir Fraser <keir.fraser@xxxxxxxxxxxxx> wrote:
> Connect a serial line and collect the hypervisor's debug console output.
> You'll probably get a crash dump when the machine reboots itself.
>
>  -- Keir
>
> On 15/06/2010 14:13, "Kathy Hadley" <Kathy.Hadley@xxxxxxxxxxxxxxx> wrote:
>
>> Greetings,
>>   I am trying to debug a Xen crash and need some help.  When I am attempting
>> to use the (relatively) new adjust_global scheduler callback function, the
>> machine reboots (this may be due to other changes I have made in the
>> hypervisor to modify DornerWorks¹ ARINC 653 scheduler to work with CPU 
>> pools).
>> I have enabled xend/xenstored tracing, but the log files do not contain
>> anything useful.  I have used gdb to trace to the point where the hypercall 
>> is
>> made from Dom0 to the hypervisor, but do not know how to proceed from here. 
>>  I
>> have read about using kdb to debug the hypervisor, but I am a bit confused.
>> It looks as though kdb (in http://xenbits.xensource.com/ext/debuggers.hg) is
>> integrated into a particular branch of Xen, which is not kept synchronized
>> with the current version of xen-unstable.  Can I use kdb with any version of
>> Xen?  If so, how?  What files do I need to download and what should I do to
>> build them?  Or does someone have other suggestions?
>>
>>   Thank you,
>> Kathy Hadley
>> DornerWorks, Ltd.
>>
>>
>>
>>
>>
>
>
>
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>

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