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IDProjectCategoryView StatusDate SubmittedLast Update
0012689ParaView(No Category)public2011-10-31 10:062013-09-03 20:39
Reporterlen0 
Assigned ToAlan Scott 
PrioritynormalSeverityminorReproducibilityhave not tried
StatusclosedResolutionfixed 
PlatformOSOS Version
Product Version3.10.1 
Target VersionFixed in Version 
Summary0012689: Segmentation fault when clipping Polyhedra
DescriptionClipping an unstructured grid containing more than one polyhedron (cell type 42) in Paraview 3.10.1 64-bit and 3.12.0-RC2 64-bit yields a segmentation fault. A minimal example containing two tetrahedra is attached as .vtu file. Plane-clipping the grid with a Z-Normal should reproduce the seg. fault.

The crash could also be reproduced with ParaView git/master as follows:
 * Load file
 * Filters - Clip
   Clip Type: Plane
   Origin: 0.3, 0.5, 0.5
   Normal: 1, 0, 0
   Tick "Inside Out" checkbox
   Apply
(One may need to toggle the checkbox a couple of times and pressing
Apply each time after toggling until the segfault gets triggered.)

=> 0x00007fffdf00166a in vtkDataSetSurfaceFilter::InsertPolygonInHash
(this=0x2a09270, ids=0x2bd7cb0, numPts=0, sourceId=0)
    at /opt/ParaView3.git/VTK/Graphics/vtkDataSetSurfaceFilter.cxx:1797
1797 quad = *end;
(gdb) list 1794
1789 vtkIdType* tab = new vtkIdType[numPts];
1790 for(int i=0; i<numPts; i++)
1791 {
1792 tab[i] = ids[(offset+i)%numPts];
1793 }
1794
1795 // Look for existing hex in the hash;
1796 end = this->QuadHash + tab[0];
1797 quad = *end;
(gdb) print numPts
$1 = 0
(gdb) print tab[0]
$1 = -614752568

The segfault is triggered by the variable 'numPts' being zero which
causes the for-loop in line 1790 being skipped such that the array 'tab'
is not initialized, but still queried at position 0 in line 1796. So,
'end' points to some random location in memory and dereferencing it in
line 1797 causes the segfault.
TagsNo tags attached.
ProjectRelease
Topic Name
Typecrash
Attached Files? file icon polyh_min.vtu [^] (830 bytes) 2011-10-31 10:06

 Relationships
related to 0014188closedDavid Thompson Bug on clipping vtkUnstructuredGrid containing Polyhedrons 

  Notes
(0031486)
David Thompson (developer)
2013-08-19 11:58

 This may be fixed by recent commits. See ParaView bug 14188.
(0031488)
len0 (reporter)
2013-08-20 10:39

 I confirm that clipping polyhedra now works with git-master on all data sets I have tried (including the above). Thanks!
(0031525)
Alan Scott (manager)
2013-09-03 20:39

 Fixed. See bug 14166 for details.

Tested local server, master, Linux.

 Issue History
Date Modified Username Field Change
2011-10-31 10:06 len0 New Issue
2011-10-31 10:06 len0 File Added: polyh_min.vtu
2013-08-19 11:58 David Thompson Note Added: 0031486
2013-08-19 11:58 David Thompson Relationship added related to 0014188
2013-08-20 10:39 len0 Note Added: 0031488
2013-09-03 20:39 Alan Scott Note Added: 0031525
2013-09-03 20:39 Alan Scott Status backlog => closed
2013-09-03 20:39 Alan Scott Assigned To => Alan Scott
2013-09-03 20:39 Alan Scott Resolution open => fixed

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