[Opensim-users] Server causing viewers to crash

[Dahlia Trimble]

I added some code to support the new particle system features such as
ribbon and alpha blending and glow, back around last November 6th and 7th.
I don't remember when 0.7.6 was released but I thought those changes made
it in. There were also changes to most third-party viewers to support those
features. I'm not aware of any crashes caused specifically by these changes
but if you have an object or a particle script which can reproduce it,
could you get it to me somehow?

-dahlia


On Thu, Mar 20, 2014 at 10:32 AM, Drover, Matt <mattdrover at mun.ca> wrote:

> Hi, your code fix of " update.PSBlock = Utils.EmptyBytes;" worked. My
> world is up and running again. To start to solve the problem properly, I
> recoded some of singularity to output the prims causing the issue. There
> is about 500 of them. Oddly, none of them had any particle system data.
> I tested editing an item and closing it and it solves the problem. But
> how to do this for 500 items?
>
> I realize this started happening after the upgrade form 0.7.4 to 0.7.6.
>
> Any thoughts?
>
> -Matthew
>
> -----Original Message-----
> From: opensim-users-bounces at lists.berlios.de
> [mailto:opensim-users-bounces at lists.berlios.de] On Behalf Of Justin
> Clark-Casey
> Sent: Tuesday, March 11, 2014 5:58 PM
> To: opensim-users at lists.berlios.de
> Subject: Re: [Opensim-users] Server causing viewers to crash
>
> Hi Matthew.  I haven't seen this before.  However, a quick grep of the
> Singularity source code reveals that "syssize"
> and "whippang" are currently unused and probably dummy names used in the
> unpacking of particle system data (llpartdata.cpp).
>
> This suggests to me that the particle system data in one of your prims
> has somehow become corrupt, in such a way that it triggers a crash in
> the viewer.
>
> If you are building OpenSimulator, an extremely quick and dirty test
> would be to replace
>
> update.PSBlock = data.ParticleSystem ?? Utils.EmptyBytes;
>
> in LLClientView.CreatePrimUpdateBlock() with just
>
> update.PSBlock = Utils.EmptyBytes;
>
> and see if the problem goes away.  If it does, then it is a particle
> system issue.  Unfortunately, then it's a case of elimination of
> anything with a particle system (I think you could get a list of such
> prims by looking for non-empty ParticleSystem fields in the prims db
> table).
>
> Or if we're unlucky, it could be some other bad data in building the
> prim packet and this is only showing up when the viewer tries to unpack
> the particle system section.
>
> On 11/03/14 11:27, Drover, Matt wrote:
> > Somehow, something has changed on my server and all viewers are
> crashing when they connect to my grid.
> >
> > I'm running opensim v0.7.6 in grid mode. I have 15 regions spanned
> > across 5 opensim instances. All on the same pc. The pc is windows
> server 2008 r2 and is a vm.
> >
> > I tested many viewers, all with the same results. Here are the errors
> from the singulatiry viewer log.
> >
> > 2014-03-10T14:20:23Z WARNING: LLDataPackerBinaryBuffer::verifyLength:
> > Buffer overflow in BinaryBuffer length verify, field name crc!
> >
> > 2014-03-10T14:20:23Z WARNING: LLDataPackerBinaryBuffer::verifyLength:
> > Current pos: 0 Buffer size: 1 Data size: 4
> >
> > 2014-03-10T14:20:23Z WARNING: LLDataPackerBinaryBuffer::verifyLength:
> > Buffer overflow in BinaryBuffer length verify, field name syssize!
> >
> > 2014-03-10T14:20:23Z WARNING: LLDataPackerBinaryBuffer::verifyLength:
> > Current pos: 0 Buffer size: 1 Data size: 4
> >
> > 2014-03-10T14:20:23Z WARNING: LLDataPackerBinaryBuffer::verifyLength:
> > Buffer overflow in BinaryBuffer length verify, field name whippang!
> >
> > 2014-03-10T14:20:23Z WARNING: LLDataPackerBinaryBuffer::verifyLength:
> > Current pos: 4 Buffer size: 1 Data size: 1
> >
> > 2014-03-10T14:20:23Z WARNING: LLDataPackerBinaryBuffer::verifyLength:
> > Buffer overflow in BinaryBuffer length verify, field name whippang!
> >
> > 2014-03-10T14:20:23Z WARNING: LLDataPackerBinaryBuffer::verifyLength:
> > Current pos: 5 Buffer size: 1 Data size: 1
> >
> > 2014-03-10T14:20:23Z WARNING: LLDataPackerBinaryBuffer::verifyLength:
> > Buffer overflow in BinaryBuffer length verify, field name whippang!
> >
> > 2014-03-10T14:20:23Z WARNING: LLDataPackerBinaryBuffer::verifyLength:
> > Current pos: 6 Buffer size: 1 Data size: 1
> >
> > 2014-03-10T14:20:23Z WARNING: LLDataPackerBinaryBuffer::verifyLength:
> > Buffer overflow in BinaryBuffer length verify, field name whippang!
> >
> > The last 2 lines repeat about 1000 more times then the viewer crashes.
> >
> > Any ideas?
> >
> > *Matthew Drover
> > *Programmer Consultant
> >
> > Immersive Technology
> > Distance Education, Learning and Teaching Support
> >
> >
> >
> > _______________________________________________
> > Opensim-users mailing list
> > Opensim-users at lists.berlios.de
> > https://lists.berlios.de/mailman/listinfo/opensim-users
> >
>
>
> --
> Justin Clark-Casey (justincc)
> OSVW Consulting
> http://justincc.org
> http://twitter.com/justincc
> _______________________________________________
> Opensim-users mailing list
> Opensim-users at lists.berlios.de
> https://lists.berlios.de/mailman/listinfo/opensim-users
> _______________________________________________
> Opensim-users mailing list
> Opensim-users at lists.berlios.de
> https://lists.berlios.de/mailman/listinfo/opensim-users
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://opensimulator.org/pipermail/opensim-users/attachments/20140320/137f3773/attachment.html>