Re: [Xen-devel] 4.11.0 RC1 panic

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 25.04.18 at 16:42, <bouyer@xxxxxxxxxxxxxxx> wrote:
> On Wed, Apr 25, 2018 at 12:42:42PM +0200, Manuel Bouyer wrote:
>> > Without line numbers associated with at least the top stack trace entry
>> > I can only guess what it might be - could you give the patch below a try?
>> > (This may not be the final patch, as I'm afraid there may be some race
>> > here, but I'd have to work this out later.)
>> 
>> Yes, this works. thanks !
>> I'll now put this version on the NetBSD testbed I'm running.
>> This should put some pressure on it.
> 
> Running NetBSD tests in several guests I got:
> (XEN) 
> (XEN) ****************************************
> (XEN) Panic on CPU 1:
> (XEN) Assertion 'oc > 0' failed at mm.c:628
> (XEN) ****************************************
> (see attached file for complete report).

Do you know what exactly the guest was doing at that time? IOW do
you have any information on how to repro (preferably without having
to run NetBSD)? Did these failures start occurring recently (your
mention of 4.8 seems to suggest otherwise)?

Jan



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