[Opensim-users] Server causing viewers to crash

Drover, Matt mattdrover at mun.ca
Fri Mar 21 14:16:04 UTC 2014


So it seems I do have curroption in my partical data. I tried to export
my oar as saw the errors below.

Looking at my db, I see that prims.ParticleSystem has the following
lengths.

0 - these prims work fine
1 - these prims are curropted in my export and crashes my viewer
86 - these prims have actual particle scripts.

I did a test and NULL'd a few of those 1-length prims and it fixed my
issue. Do you see any problems with my NULL'ing all the 1-length prims?

-Matt

Export Error:

Line 9: 2014-03-21 11:12:09,173 WARN  -
OpenSim.Region.Framework.Scenes.UuidGatherer [UUID GATHERER]: Could not
check particle system for part orange01
d855a386-9ed9-4288-a1fb-4f02b2911b55 in object barrel_oranges
0b926d04-df71-4c46-9b9f-a5f11fea0bfd since it is corrupt.  Continuing.
	Line 10: 2014-03-21 11:12:09,175 WARN  -
OpenSim.Region.Framework.Scenes.UuidGatherer [UUID GATHERER]: Could not
check particle system for part orange02
6719bfd3-3b91-464c-9af3-5c6cfcc4ec1e in object barrel_oranges
0b926d04-df71-4c46-9b9f-a5f11fea0bfd since it is corrupt.  Continuing.
	Line 11: 2014-03-21 11:12:09,178 WARN  -
OpenSim.Region.Framework.Scenes.UuidGatherer [UUID GATHERER]: Could not
check particle system for part Primitive
5df5f8ed-de7e-42e8-b8f3-7e97af4e153c in object barrel_oranges
0b926d04-df71-4c46-9b9f-a5f11fea0bfd since it is corrupt.  Continuing.
	Line 12: 2014-03-21 11:12:09,179 WARN  -
OpenSim.Region.Framework.Scenes.UuidGatherer [UUID GATHERER]: Could not
check particle system for part Rug v4
131ce5d2-e5b1-4fd7-971f-a733d6cd3766 in object Rug v4
131ce5d2-e5b1-4fd7-971f-a733d6cd3766 since it is corrupt.  Continuing.
	Line 13: 2014-03-21 11:12:09,183 WARN  -
OpenSim.Region.Framework.Scenes.UuidGatherer [UUID GATHERER]: Could not
check particle system for part Cuboard_small
1cd66f19-9621-4ee2-82c8-9a309ab99009 in object Cuboard_small
1cd66f19-9621-4ee2-82c8-9a309ab99009 since it is corrupt.  Continuing.
	Line 14: 2014-03-21 11:12:09,185 WARN  -
OpenSim.Region.Framework.Scenes.UuidGatherer [UUID GATHERER]: Could not
check particle system for part Cuboard
331c99d3-8563-410b-bebf-4fea6f80b8cf in object Cuboard_small
1cd66f19-9621-4ee2-82c8-9a309ab99009 since it is corrupt.  Continuing.
	Line 15: 2014-03-21 11:12:09,187 WARN  -
OpenSim.Region.Framework.Scenes.UuidGatherer [UUID GATHERER]: Could not
check particle system for part Cuboard
bc3e158e-f9a1-4ae6-914b-dace73c4b4ea in object Cuboard_small
1cd66f19-9621-4ee2-82c8-9a309ab99009 since it is corrupt.  Continuing.
	Line 16: 2014-03-21 11:12:09,189 WARN  -
OpenSim.Region.Framework.Scenes.UuidGatherer [UUID GATHERER]: Could not
check particle system for part Cuboard
cd584f59-2e04-4c62-bb9b-b8850e62fc46 in object Cuboard_small
1cd66f19-9621-4ee2-82c8-9a309ab99009 since it is corrupt.  Continuing.
	Line 17: 2014-03-21 11:12:09,191 WARN  -
OpenSim.Region.Framework.Scenes.UuidGatherer [UUID GATHERER]: Could not
check particle system for part Cuboard
ebc9a798-8b8e-4977-a6c4-30df67ba10de in object Cuboard_small
1cd66f19-9621-4ee2-82c8-9a309ab99009 since it is corrupt.  Continuing.
	Line 18: 2014-03-21 11:12:09,193 WARN  -
OpenSim.Region.Framework.Scenes.UuidGatherer [UUID GATHERER]: Could not
check particle system for part Cuboard
4ef18c97-ed54-42d5-b4cd-cf977add797c in object Cuboard_small
1cd66f19-9621-4ee2-82c8-9a309ab99009 since it is corrupt.  Continuing.
	Line 19: 2014-03-21 11:12:09,195 WARN  -
OpenSim.Region.Framework.Scenes.UuidGatherer [UUID GATHERER]: Could not
check particle system for part Cuboard
ede54df0-9d25-42c5-b33a-f7fe3d8047ce in object Cuboard_small
1cd66f19-9621-4ee2-82c8-9a309ab99009 since it is corrupt.  Continuing.
	Line 20: 2014-03-21 11:12:09,197 WARN  -
OpenSim.Region.Framework.Scenes.UuidGatherer [UUID GATHERER]: Could not
check particle system for part Cuboard
6ad2ce2e-069e-4cac-945e-13b5134219d3 in object Cuboard_small
1cd66f19-9621-4ee2-82c8-9a309ab99009 since it is corrupt.  Continuing.
	Line 21: 2014-03-21 11:12:09,198 WARN  -
OpenSim.Region.Framework.Scenes.UuidGatherer [UUID GATHERER]: Could not
check particle system for part Cuboard
06f25e74-2b93-4ab1-ac14-bfabdebba470 in object Cuboard_small
1cd66f19-9621-4ee2-82c8-9a309ab99009 since it is corrupt.  Continuing.

-----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: Thursday, March 20, 2014 9:12 PM
To: opensim-users at lists.berlios.de
Subject: Re: [Opensim-users] Server causing viewers to crash

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
>      >
>      >
>      >
>      > _______________________________________________
>      > Opensim-users mailing list
>      > Opensim-users at lists.berlios.de
<mailto: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
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--
Justin Clark-Casey (justincc)
OSVW Consulting
http://justincc.org
http://twitter.com/justincc
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