Re: make test under lang/perl5.14 causes panic: blockable sleep lock (sleep mutex) process lock @ /usr/src/sys/ia64/ia64/trap.c:562

From: Anton Shterenlikht <mexas_at_bristol.ac.uk>
Date: Wed, 17 Aug 2011 08:31:56 +0100
On Tue, Aug 16, 2011 at 04:49:44PM -0700, Marcel Moolenaar wrote:
> 
> On Aug 16, 2011, at 1:12 AM, Anton Shterenlikht wrote:
> 
> > On Mon, Aug 15, 2011 at 06:34:51PM +0100, Anton Shterenlikht wrote:
> >> On Fri, Aug 12, 2011 at 05:45:55PM -0700, Marcel Moolenaar wrote:
> >>> 
> >>> On Aug 12, 2011, at 7:19 AM, Anton Shterenlikht wrote:
> >>> 
> >>>> On ia64 r221488
> >>> 
> >>> Please update to at least r223700, as that was a major stability fix.
> >> 
> >> UZI> uname -a
> >> FreeBSD mech-as221.men.bris.ac.uk 9.0-BETA1 FreeBSD 9.0-BETA1 #5 r224876: Mon Aug 15 12:06:05 BST 2011     root_at_mech-as221.men.bris.ac.uk:/usr/obj/usr/src/sys/UZI  ia64
> >> UZI> 
> >> 
> >> make test run with no panic once (though lots of errors,
> >> I should probably let the perl team know), and
> >> panicked on the second run:
> 
> Anton,
> 
> Do you have "options PREEMPTON" in your kernel configuration by any
> chance?
> 
> The panics you report are the ones I typically get when I enable
> PREEMPTION. I haven't found the root cause for this yet. There's
> alsp a PR to track this particular issue.

Yes, I'm aware of this. This has been the case
for over a year. No, I haven't got PREEMPTION
on any of my ia64 nodes, e.g.:

UZI> grep PREE /root/kernels/UZI 
#options        IPI_PREEMPTION
#options        PREEMPTION
UZI>

-- 
Anton Shterenlikht
Room 2.6, Queen's Building
Mech Eng Dept
Bristol University
University Walk, Bristol BS8 1TR, UK
Tel: +44 (0)117 331 5944
Fax: +44 (0)117 929 4423
Received on Wed Aug 17 2011 - 05:31:59 UTC

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