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Re: [Xen-users] [BUG] Xen BUG at sched_credit.c:243



On Fri, 2015-03-06 at 11:07 +0000, George Dunlap wrote:
> On 03/06/2015 10:38 AM, Dario Faggioli wrote:
> > On Fri, 2015-03-06 at 10:03 +0000, George Dunlap wrote:

> >> The original bug is actually very concerning; I wonder if it's related
> >> to c/s e8bb583 , which went into the development branch about a month ago.
> >>
> > That would be weird. That commit is all about /arch/arm, while CB is on
> > x86, IIRC.
> 
> Oh -- sorry, somehow I got the impression when I was skimming the thread
> that he was running on ARM; 
>
Yeah, me too at a first glance, because the platform is an 'embedded
board'... but then it's said it is an x86 one. :-)

> but now I see it there   That makes the
> BUG_ON() a lot more scary. :-(
> 
Indeed... and even more weird, IMO, as no one seems to have hit it
before, neither us devs nor other Xen users.

It's true that he says he's on 4.5, but there is not much new in 4.5, as
far as Credit1 is concerned. Well, of course there is soft affinity, but
that's mostly mechanical and interface changes... the scheduling part
was already there (under the name of 'numa aware scheduling') since
4.3! :-O

Regards,
Dario

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