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).

So in combination with your later reply I'm confused: Are you observing
this with 64-bit guests as well (your later reply appears to hint towards
64-bit-ness), or (as the stack trace suggests) only 32-bit ones? Knowing
this may already narrow areas where to look.

Jan



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