Re: [Playerstage-users] Gazebo segmentation fault in Debian

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Hi,

Thanks for the reply.

> Can you run gazebo through gdb, and post a trace back?

For pioneer2dx.world:
#0  0xffffe410 in __kernel_vsyscall ()
#1  0xa79b39d1 in raise () from /lib/tls/i686/cmov/libc.so.6
#2  0xa79b5209 in abort () from /lib/tls/i686/cmov/libc.so.6
#3  0xa79e981a in __fsetlocking () from /lib/tls/i686/cmov/libc.so.6
#4  0xa79f1c98 in free () from /lib/tls/i686/cmov/libc.so.6
#5  0xa79f34e6 in malloc () from /lib/tls/i686/cmov/libc.so.6
#6  0xa7d9864b in xmlBufferCreateSize () from /usr/lib/libxml2.so.2
#7  0xa7d992df in xmlNodeGetContent () from /usr/lib/libxml2.so.2
#8  0x08061d0a in WorldFileNode::GetNodeValue (this=0x80c9fb0, 
key=0xa7abaff4 "<#022") at WorldFile.cc:403
403             value = xmlNodeGetContent(currNode->xmlNode);
#9  0x08061eba in WorldFileNode::GetDouble (this=0x80c9fb0, key=0x80ad8f3 
"updateRate", def=10, require=0)
     at WorldFile.cc:613
613       char *value = this->GetNodeValue( key );
#10 0x0806eaf1 in ObserverCam::Load (this=0x80c96a0, file=0x80c7750, 
node=0x80c9fb0) at ObserverCam.cc:207
207       this->updatePeriod = 1 / (node->GetDouble("updateRate", 10.0, 0) 
+ 1e-6);
#11 0x08060bdc in World::LoadModel (this=0x80d2a38, node=0x80c9fb0, 
parent=0x0) at World.cc:335
335           if (model->MasterLoad( this->worldFile, node ) != 0)

For road.world:
#0  0xa7a5782a in malloc_usable_size () from /lib/tls/i686/cmov/libc.so.6
#1  0xa7a597f8 in free () from /lib/tls/i686/cmov/libc.so.6
#2  0xa7a5b4e6 in malloc () from /lib/tls/i686/cmov/libc.so.6
#3  0xa7c09ae8 in operator new () from /usr/lib/libstdc++.so.6
#4  0x0806ce9e in LightSource::Load (this=0x80c9610, file=0x80c7750, 
node=0x80c9ff0) at LightSource.cc:150
150       this->lightGeom = new LightGeom(this->body, this->modelSpaceId);
#5  0x08060bdc in World::LoadModel (this=0x80d2920, node=0x80c9ff0, 
parent=0x0) at World.cc:335
335           if (model->MasterLoad( this->worldFile, node ) != 0)
#6  0x08060da7 in World::LoadModel (this=0x80d2920, node=0x80d06d8, 
parent=0x0) at World.cc:386
386         if (this->LoadModel( cnode, model ) != 0)
#7  0x0806115a in World::Load (this=0x80d2920, worldFile=0x80c7750) at 
World.cc:254
254       if (this->LoadModel( this->worldFile->GetRootNode(), NULL ) != 
0)
#8  0x0805f291 in Init () at main.cc:324
324       if (world->Load(worldFile) != 0)

For road.world without light source:
#0  0xa797e82a in malloc_usable_size () from /lib/tls/i686/cmov/libc.so.6
#1  0xa79807f8 in free () from /lib/tls/i686/cmov/libc.so.6
#2  0xa79824e6 in malloc () from /lib/tls/i686/cmov/libc.so.6
#3  0xa7b30ae8 in operator new () from /usr/lib/libstdc++.so.6
#4  0x0806c5c4 in GroundPlane::Load (this=0x80d2ad8, file=0x80c7750, 
node=0x80c9ff0) at GroundPlane.cc:164
164       this->planeGeom = new PlaneGeom( this->body, this->modelSpaceId, 
altitude, normal );
#5  0x08060bdc in World::LoadModel (this=0x80d28a8, node=0x80c9ff0, 
parent=0x0) at World.cc:335
335           if (model->MasterLoad( this->worldFile, node ) != 0)
#6  0x08060da7 in World::LoadModel (this=0x80d28a8, node=0x80d06d8, 
parent=0x0) at World.cc:386
386         if (this->LoadModel( cnode, model ) != 0)
#7  0x0806115a in World::Load (this=0x80d28a8, worldFile=0x80c7750) at 
World.cc:254
254       if (this->LoadModel( this->worldFile->GetRootNode(), NULL ) != 
0)

> Does the seg fault happen with the pioneer2dx.world?

Yes. the trace is provided above.

> If you remove a light source from the world file, does it still crash?

Yes. But in another place.

Thanks again,
--Mazda

> Debian should be a fine choice. Many people also use gentoo and ubuntu.
>
> -nate
>
> On 9/16/06, Mazda Ahmadi <ma...@cs...> wrote:
>>
>> Thanks Roozbeh, that's indeed a bug. However that didn't solve my problem.
>>
>> When I use "wheelchair, terrain, example, etc" worldfiles, the memory
>> corruption happens in file Worldfile, this line:
>>
>> value = xmlNodeGetContent( currNode->xmlNode)
>>
>> and when I use the other worldfiles (carchassies, road) it actually
>> passes that lines and seg faults at LightSource.cc line:
>> this->lightGeom = new LightGeom( ...)
>>
>> Has anyone successfully installed and used gazebo on Debian? If not, what
>> operating systems do you guys use?
>>
>> Thanks!
>> --Mazda
>>
>>
>> R>  Hello,
>>
>> R> In function *LightGeom::PreRender*(RenderOptions
>> R> *opt),  " GLfloat npos[3] " should be "GLfloat
>> R> npos[4]".
>> R> Regards,
>> R> Roozbeh
>>
>>
>>>
>>> Hello,
>>>
>>> I've downloaded the latest version of gazebo and installed it on a freshly
>>> installed Debian (testing).  Running gazebo with worldfiles "carchassis,
>>> road" result in:
>>> ** Gazebo 0.6.1 **
>>> * Part of the Player/Stage Project [http://playerstage.sourceforge.net].
>>> * Copyright 2000-2005 Brian Gerkey, Richard Vaughan, Andrew Howard,
>>> * Nate Koenig and contributors.
>>> * Released under the GNU General Public License.
>>> using display [:0.0]
>>> Segmentation fault
>>>
>>>
>>> Running gazebo with worldfiles "wheelchair, terrain, example, blimp" result
>>> in:
>>> ** Gazebo 0.6.1 **
>>> * Part of the Player/Stage Project [http://playerstage.sourceforge.net].
>>> * Copyright 2000-2005 Brian Gerkey, Richard Vaughan, Andrew Howard,
>>> * Nate Koenig and contributors.
>>> * Released under the GNU General Public License.
>>> using display [:0.0]
>>> *** glibc detected *** malloc(): memory corruption: 0x080c9998 ***
>>> Aborted
>>>
>>> It seems to run fine with an *empty* worldfile (running wxgazebo with empty
>>> worldfile results in a simultion control window popping up and time starting
>>> to increase).
>>>
>>> ./configure on gazebo says (among other things):
>>> checking for GDK_PIXBUF... configure: WARNING: GDK_pixbuf not found; some
>>> functionality will be disabled
>>> Gazebo will build Python bindings
>>> Gazebo will build wxgazebo (GUI)
>>> Gazebo will NOT build the gzbuilder utility:
>>>    could not find gdal_priv.h
>>>
>>>
>>> I couldn't find anything on the mailing list or the web, would really
>>> appreciate any help.
>>>
>>> Thanks!
>>> --Mazda
>>>
>>> PS. I posted this email to the gazebo developers list by mistake. This should
>>> be the right mailing list for it.
>>>
>>
>> -------------------------------------------------------------------------
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>
> -------------------------------------------------------------------------
> Using Tomcat but need to do more? Need to support web services, security?
> Get stuff done quickly with pre-integrated technology to make your job easier
> Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
> http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
> _______________________________________________
> Playerstage-users mailing list
> Pla...@li...
> https://lists.sourceforge.net/lists/listinfo/playerstage-users
>