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

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@xxxxxxxxxxxxxxxxxxxxxxxxx:/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
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