[Opensim-users] Server causing viewers to crash
Justin Clark-Casey
jjustincc at googlemail.com
Thu Mar 20 23:41:48 UTC 2014
0.7.6 was September 2013 so those changes won't be there. It would be very odd that 500 objects are causing the issue,
unless someone has duplicated a lot of stuff.
Matt, have you definitely eliminated some kind of disk corruption? Your problem with mysql timeout during initial load
of some regions made me think that you might have some underlying issue.
Failing that, how do you know these objects have no particle system data? They have none in the database itself?
On 20/03/14 20:18, Dahlia Trimble wrote:
> 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 <mailto: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>
> [mailto: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 <mailto: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
> >
> >
> >
> > _______________________________________________
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> >
>
>
> --
> Justin Clark-Casey (justincc)
> OSVW Consulting
> http://justincc.org
> http://twitter.com/justincc
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--
Justin Clark-Casey (justincc)
OSVW Consulting
http://justincc.org
http://twitter.com/justincc
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