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IDProjectCategoryView StatusDate SubmittedLast Update
0006027ParaView(No Category)public2007-11-08 15:242009-05-13 13:47
ReporterBerk Geveci 
Assigned ToUtkarsh Ayachit 
PrioritynormalSeverityminorReproducibilityalways
StatusclosedResolutionfixed 
PlatformOSOS Version
Product Version 
Target Version3.6Fixed in Version 
Summary0006027: Possible uninitialized memory access
DescriptionReported by Mattijs Janssens <m.janssens@opencfd.co.uk>

Just something I noticed.

Our reader module (for OpenFOAM) installs a malloc
routine (through __malloc_hook) which initialises
all memory to NaN. It also sets floating point
trapping (FE_DIVBYZERO | FE_INVALID |
FE_OVERFLOW). We use this as a simple way of
catching uninitialised data.

I've noticed that I get a floating point exception
when I do a cell (or point) selection i.e. it
seems to use uninitialised data. If I switch off
the exception handling it works just fine.

I attach a traceback of the error. Lines 0..2 are
from our exception trapping routine. Last
vtk/paraview routine is #3, SetFrustum.

Kind regards,

Mattijs

#0 Foam::error::printStack(Foam::Ostream&)
in "/home/hunt2/mattijs/OpenFOAM/OpenFOAM-1.4.2/lib/linux64GccDPOpt/libOpenFOAM.so"
#1 Foam::sigFpe::sigFpeHandler(int)
in "/home/hunt2/mattijs/OpenFOAM/OpenFOAM-1.4.2/lib/linux64GccDPOpt/libOpenFOAM.so"
#2 Uninterpreted: /lib64/libpthread.so.0
[0x2b7542bc4130] in "/lib64/libpthread.so.0"
#3 vtkSelectionSource::SetFrustum(double*)
in "/home/hunt2/mattijs/OpenFOAM/linuxAMD64/ParaView3.2-mpi/lib/paraview-3.2/libvtkGraphics.so.pv3.2"
#4
vtkSelectionSourceCommand(vtkClientServerInterpreter*,
vtkObjectBase*, char const*,
vtkClientServerStream const&,
vtkClientServerStream&)
#5
vtkClientServerInterpreter::ProcessCommandInvoke(vtkClientServerStream
const&, int)
in "/home/hunt2/mattijs/OpenFOAM/linuxAMD64/ParaView3.2-mpi/lib/paraview-3.2/libvtkClientServer.so"
#6
vtkClientServerInterpreter::ProcessOneMessage(vtkClientServerStream
const&, int)
in "/home/hunt2/mattijs/OpenFOAM/linuxAMD64/ParaView3.2-mpi/lib/paraview-3.2/libvtkClientServer.so"
#7
vtkClientServerInterpreter::ProcessStream(vtkClientServerStream
const&)
in "/home/hunt2/mattijs/OpenFOAM/linuxAMD64/ParaView3.2-mpi/lib/paraview-3.2/libvtkClientServer.so"
#8
vtkSelfConnection::ProcessStreamLocally(vtkClientServerStream&)
0000009
vtkSelfConnection::SendStreamToClient(vtkClientServerStream&)
in "/home/hunt2/mattijs/OpenFOAM/linuxAMD64/ParaView3.2-mpi/lib/paraview-3.2/libvtkPVServerCommon.so"
#10
vtkProcessModuleConnection::SendStream(unsigned
int, vtkClientServerStream&)
in "/home/hunt2/mattijs/OpenFOAM/linuxAMD64/ParaView3.2-mpi/lib/paraview-3.2/libvtkPVServerCommon.so"
0000011
vtkProcessModuleConnectionManager::SendStream(long
long, unsigned int, vtkClientServerStream&, int)
in "/home/hunt2/mattijs/OpenFOAM/linuxAMD64/ParaView3.2-mpi/lib/paraview-3.2/libvtkPVServerCommon.so"
#12 vtkProcessModule::SendStream(long long,
unsigned int, vtkClientServerStream&, int)
#13 vtkSMProxy::UpdateProperty(char const*, int)
#14 vtkSMProxy::UpdateProperty(char const*)
#15 vtkSMProxy::UpdateVTKObjects()
in "/home/hunt2/mattijs/OpenFOAM/linuxAMD64/ParaView3.2-mpi/lib/paraview-3.2/libvtkPVServerManager.so"
#16
vtkSMSelectionHelper::NewSelectionSourceFromSelection(long
long, vtkSelection*)
in "/home/hunt2/mattijs/OpenFOAM/linuxAMD64/ParaView3.2-mpi/lib/paraview-3.2/libvtkPVServerManager.so"
#17
vtkSMSurfaceRepresentationProxy::ConvertSelection(vtkSelection*)
#18
vtkSMPVRepresentationProxy::ConvertSelection(vtkSelection*)
#19
vtkSMRenderViewProxy::SelectOnSurface(unsigned
int, unsigned int, unsigned int, unsigned int,
vtkCollection*, vtkCollection*, vtkCollection*,
bool, bool)
in "/home/hunt2/mattijs/OpenFOAM/linuxAMD64/ParaView3.2-mpi/lib/paraview-3.2/libvtkPVServerManager.so"
#20 pqRenderView::selectOnSurface(int*)
#21 pqRubberBandHelper::processEvents(unsigned
long)
in "/home/hunt2/mattijs/OpenFOAM/linuxAMD64/ParaView3.2-mpi/lib/paraview-3.2/libpqCore.so"
#22
pqRubberBandHelper::vtkPQSelectionObserver::Execute(vtkObject*,
unsigned long, void*)
#23 vtkSubjectHelper::InvokeEvent(unsigned long,
void*, vtkObject*)
in "/home/hunt2/mattijs/OpenFOAM/linuxAMD64/ParaView3.2-mpi/lib/paraview-3.2/libvtkCommon.so.pv3.2"
#24 vtkObject::InvokeEvent(unsigned long, void*)
in "/home/hunt2/mattijs/OpenFOAM/linuxAMD64/ParaView3.2-mpi/lib/paraview-3.2/libvtkCommon.so.pv3.2"
#25 QVTKWidget::mouseReleaseEvent(QMouseEvent*)
#26 QWidget::event(QEvent*)
#27 QVTKWidget::event(QEvent*)
in "/home/hunt2/mattijs/OpenFOAM/linuxAMD64/ParaView3.2-mpi/lib/paraview-3.2/libQVTK.so.pv3.2"
#28 QApplicationPrivate::notify_helper(QObject*,
QEvent*)
#29 QApplication::notify(QObject*, QEvent*)
in "/home/hunt2/mattijs/OpenFOAM/linuxAMD64/ParaView3.2-mpi/lib/paraview-3.2/libQtGui.so.4"
#30
Uninterpreted: /home/hunt2/mattijs/OpenFOAM/linuxAMD64/ParaView3.2-mpi/lib/paraview-3.2/libQtGui.so.4
[0x2b753ffb4406]
#31 QApplication::x11ProcessEvent(_XEvent*)
#32 ??
#33 g_main_context_dispatch
in "/opt/gnome/lib64/libglib-2.0.so.0"
#34 ??
#35 g_main_context_iteration
in "/opt/gnome/lib64/libglib-2.0.so.0"
#36
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
in "/home/hunt2/mattijs/OpenFOAM/linuxAMD64/ParaView3.2-mpi/lib/paraview-3.2/libQtCore.so.4"
#37 ??
in "/home/hunt2/mattijs/OpenFOAM/linuxAMD64/ParaView3.2-mpi/lib/paraview-3.2/libQtGui.so.4"
#38
QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
#39
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
in "/home/hunt2/mattijs/OpenFOAM/linuxAMD64/ParaView3.2-mpi/lib/paraview-3.2/libQtCore.so.4"
#40 QCoreApplication::exec()
in "/home/hunt2/mattijs/OpenFOAM/linuxAMD64/ParaView3.2-mpi/lib/paraview-3.2/libQtCore.so.4"
#41 pqProcessModuleGUIHelper::RunGUIStart(int,
char**, int, int)
#42 vtkProcessModule::StartClient(int, char**)
in "/home/hunt2/mattijs/OpenFOAM/linuxAMD64/ParaView3.2-mpi/lib/paraview-3.2/libvtkPVServerCommon.so"
#43 vtkProcessModule::Start(int, char**)
in "/home/hunt2/mattijs/OpenFOAM/linuxAMD64/ParaView3.2-mpi/lib/paraview-3.2/libvtkPVServerCommon.so"
#44 vtkProcessModuleGUIHelper::Run(vtkPVOptions*)
in "/home/hunt2/mattijs/OpenFOAM/linuxAMD64/ParaView3.2-mpi/lib/paraview-3.2/libvtkPVServerCommon.so"
#45 pqMain::Run(QApplication&,
pqProcessModuleGUIHelper*)
#46 main
in "/home/hunt2/mattijs/OpenFOAM/linuxAMD64/ParaView3.2-mpi/lib/paraview-3.2/paraview-real"
#47 __libc_start_main
#48 vtkObject::RegisterInternal(vtkObjectBase*,
int)
in "/home/hunt2/mattijs/OpenFOAM/linuxAMD64/ParaView3.2-mpi/lib/paraview-3.2/paraview-real"
TagsNo tags attached.
Project
Topic Name
Type
Attached Filesc file icon sigFpe.C [^] (5,516 bytes) 2008-04-08 13:59

 Relationships

  Notes
(0011157)
Ken Moreland (manager)
2008-04-08 11:58

 Is it possible to get example data and reader? I'm not sure how we can replicate/test/fix this problem without it.
(0011164)
Mattijs (reporter)
2008-04-08 14:04

 I uploaded the piece of code we use in our reader. It is all quite OpenFOAM specific so you'll have to code a bit yourself:

- sigFpe::set is the main routine:
1. sets floating point trapping (sigaction(..))
2. sets a special malloc hook (my_malloc_hook) which initialises the allocated block with NaN.

Btw. does this bug forum email me if there is a change to my bug report?
(0016229)
Utkarsh Ayachit (administrator)
2009-04-28 16:49

 There selection code has changed since 3.2. I tested with valgrind and could not find any uninitialized memory access. marking this resolved unless told otherwise.
(0016234)
Alan Scott (manager)
2009-04-28 20:53

 I agree with Utkarsh.

 Issue History
Date Modified Username Field Change
2007-11-08 15:24 Berk Geveci New Issue
2008-04-08 11:57 Ken Moreland Category 3.4 => 3.6
2008-04-08 11:58 Ken Moreland Note Added: 0011157
2008-04-08 13:59 Mattijs File Added: sigFpe.C
2008-04-08 14:04 Mattijs Note Added: 0011164
2009-02-16 17:27 Ken Moreland Status backlog => tabled
2009-02-16 17:27 Ken Moreland Assigned To => Utkarsh Ayachit
2009-04-28 16:49 Utkarsh Ayachit Note Added: 0016229
2009-04-28 16:49 Utkarsh Ayachit Status tabled => @80@
2009-04-28 16:49 Utkarsh Ayachit Resolution open => fixed
2009-04-28 20:53 Alan Scott Note Added: 0016234
2009-04-28 20:53 Alan Scott Status @80@ => closed
2009-05-13 13:44 Utkarsh Ayachit Target Version => 3.6
2011-06-16 13:10 Zack Galbreath Category => (No Category)

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