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segmentation fault on selection of a selected object
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Description

System Information
Linux 3.13.0-36-generic #63-Ubuntu SMP Wed Sep 3 21:30:07 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
VGA compatible controller: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller (rev 06) (prog-if 00 [VGA controller])
Subsystem: ASUSTeK Computer Inc. Device 8534
Flags: bus master, fast devsel, latency 0, IRQ 45
Memory at f0000000 (64-bit, non-prefetchable) [size=4M]
Memory at e0000000 (64-bit, prefetchable) [size=256M]
I/O ports at f000 [size=64]
Expansion ROM at <unassigned> [disabled]
Capabilities: <access denied>
Kernel driver in use: i915

Blender Version
Worked: 2.71
Broken: Blender 2.72 (sub 0)
build date: 2014-09-23
build time: 20:14:19
build commit date: 2014-09-23
build commit time: 18:40
build hash: eb464ee
build platform: Linux:64bit
build type: Release
build c flags: -DWITH_FREESTYLE -pipe -fPIC -funsigned-char -fno-strict-aliasing -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE64_SOURCE -fopenmp -DNDEBUG -O2 -msse -msse2 -DWITH_MOD_FLUID -DWITH_MOD_OCEANSIM -DLITTLE_ENDIAN -DWITH_AUDASPACE -DWITH_AVI -DWITH_OPENNL -DHAVE_STDBOOL_H
build c++ flags: -pipe -fPIC -funsigned-char -fno-strict-aliasing -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE64_SOURCE -fopenmp -fpermissive -DSTDC_CONSTANT_MACROS -DNDEBUG -O2 -msse -msse2 -DWITH_MOD_FLUID -DWITH_MOD_OCEANSIM -DLITTLE_ENDIAN__ -DWITH_AUDASPACE -DWITH_AVI -DWITH_OPENNL -DHAVE_STDBOOL_H
build link flags: -lrt
build system: SCons

Short description of error
blender crashes when user reselects an already selected object.

Exact steps for others to reproduce the error
When blender opens the start-up file, select default selected cube. Blender crashes with a segmentation fault. The same happens when reselecting any other selected object.

Event Timeline

while0pass (while0pass) raised the priority of this task from to 90.
while0pass (while0pass) updated the task description. (Show Details)
while0pass (while0pass) edited a custom field.
Sergey Sharybin (sergey) lowered the priority of this task from 90 to 30.Sep 29 2014, 9:42 AM

This is very likely a video driver bug. Please try:

  • Disabling VBO in user preferences (mesa had a bug for a long time related on using VBO in the selection bufer)
  • Try using latest builds from builder.blender.org
  • Try running blender-softwaregl script from the official archives and see if it makes any difference

Yes, disabling VBO solves the issue.

Sergey Sharybin (sergey) changed the task status from Unknown Status to Unknown Status.Oct 7 2014, 10:54 AM
Sergey Sharybin (sergey) claimed this task.

This is a driver bug, was fixed in latest mesa i think. Nothing we can do from the blender side. Thanks for the report anyway.