Calling LibLoad and LibFree multiple times on a file that plays an Action crashes Blender #44069

New Issue

mobious · 2015-03-20T21:23:11+01:00

mobious commented

2015-03-20 21:23:11 +01:00

System Information
Windows 7 64-bit
Intel HD Graphics 4000

Blender Version
2.72b 9e963ae, 2.73a bbf09d9

Files
loadme.blend - Contains a cube that plays a simple action (no armature)
load.blend - Loads loadme.blend using LibLoad in 'Scene' mode and load_actions=True. Pressing Space reloads the file.

Description
Blender crashes when running a BGE script that repeatedly calls LibFree and LibLoad in 'Scene' mode with load_actions=True on a file that contains an object that plays an action.

Exact steps for others to reproduce the error
Place the attached .blend files in the same folder. Open load.blend and start the game engine. Press space to reload the file. After reloading several times (3 times on my computer), Blender crashes.

Additional Notes
This crash only happens if the loaded object plays an action. i.e. the crash will not occur if you remove the Action Actuator in loadme.blend but keep the action itself.

**System Information** Windows 7 64-bit Intel HD Graphics 4000 **Blender Version** 2.72b 9e963ae, 2.73a bbf09d9 **Files** [loadme.blend](https://archive.blender.org/developer/F153458/loadme.blend) - Contains a cube that plays a simple action (no armature) [load.blend](https://archive.blender.org/developer/F153459/load.blend) - Loads loadme.blend using LibLoad in 'Scene' mode and load_actions=True. Pressing Space reloads the file. **Description** Blender crashes when running a BGE script that repeatedly calls LibFree and LibLoad in 'Scene' mode with load_actions=True on a file that contains an object that plays an action. **Exact steps for others to reproduce the error** Place the attached .blend files in the same folder. Open load.blend and start the game engine. Press space to reload the file. After reloading several times (3 times on my computer), Blender crashes. **Additional Notes** This crash only happens if the loaded object plays an action. i.e. the crash will not occur if you remove the Action Actuator in loadme.blend but keep the action itself.

mobious commented

2015-03-20 21:23:11 +01:00

Changed status to: 'Open'

mobious commented

2015-03-20 21:23:11 +01:00

Added subscriber: @mobious

Pierluigi Grassi commented

2015-04-11 17:20:56 +02:00

Added subscriber: @pgi

Pierluigi Grassi commented

2015-04-11 17:20:56 +02:00

I can confirm this on the latest sources (2.74 release). This is not related to the lib-free/lib-load material caching issue, it's a bug of its own. This is the stack trace of gdb:

Program received signal SIGSEGV, Segmentation fault.
__strcmp_sse2_unaligned () at ../sysdeps/x86_64/multiarch/strcmp-sse2-unaligned.S:30
30	../sysdeps/x86_64/multiarch/strcmp-sse2-unaligned.S: No such file or directory.
(gdb) bt
- 0  __strcmp_sse2_unaligned () at ../sysdeps/x86_64/multiarch/strcmp-sse2-unaligned.S:30
- 1  0x0000000002dea6e7 in BL_InterpolatorList::GetScalarInterpolator (this=0x7bfdcb0, rna_path=0x4a5d338 "location", array_index=0)
    at /home/pgi/blender-git/blender/source/gameengine/Converter/KX_BlenderScalarInterpolator.cpp:77
- 2  0x0000000002efb740 in BL_CreateIPO (action=0x7bef958, gameobj=0x99058d0, converter=0x6e1cad0) at /home/pgi/blender-git/blender/source/gameengine/Ketsji/KX_IpoConvert.cpp:123
- 3  0x0000000002ef9002 in BL_Action::Play (this=0x9977c00, name=0x7bef97a "CubeAction", start=1, end=60, priority=0, blendin=0, play_mode=0, layer_weight=-1, ipo_flags=0, playback_speed=1, blend_mode=0)
    at /home/pgi/blender-git/blender/source/gameengine/Ketsji/BL_Action.cpp:161
#4  0x0000000002edc456 in BL_ActionManager::PlayAction (this=0x9977b90, name=0x7bef97a "CubeAction", start=1, end=60, layer=0, priority=0, blendin=0, play_mode=0, layer_weight=-1, ipo_flags=0, 
    playback_speed=1, blend_mode=0) at /home/pgi/blender-git/blender/source/gameengine/Ketsji/BL_ActionManager.cpp:115
#5  0x0000000002e6dc7f in KX_GameObject::PlayAction (this=0x99058d0, name=0x7bef97a "CubeAction", start=1, end=60, layer=0, priority=0, blendin=0, play_mode=0, layer_weight=0, ipo_flags=0, 
    playback_speed=1, blend_mode=0) at /home/pgi/blender-git/blender/source/gameengine/Ketsji/KX_GameObject.cpp:459
- 6  0x0000000002de3f1d in BL_ActionActuator::Update (this=0x7b24bf0, curtime=72,06815317471542, frame=true) at /home/pgi/blender-git/blender/source/gameengine/Converter/BL_ActionActuator.cpp:282
- 7  0x0000000002f37030 in SCA_LogicManager::UpdateFrame (this=0x6ee2cd0, curtime=72,06815317471542, frame=true) at /home/pgi/blender-git/blender/source/gameengine/GameLogic/SCA_LogicManager.cpp:225
- 8  0x0000000002ebd1c0 in KX_Scene::LogicUpdateFrame (this=0x6ee12c0, curtime=72,06815317471542, frame=true) at /home/pgi/blender-git/blender/source/gameengine/Ketsji/KX_Scene.cpp:1675
- 9  0x0000000002e816e4 in KX_KetsjiEngine::NextFrame (this=0x6ab8ae0) at /home/pgi/blender-git/blender/source/gameengine/Ketsji/KX_KetsjiEngine.cpp:678
#10 0x0000000002d95a2a in BL_KetsjiNextFrame (ketsjiengine=0x6ab8ae0, C=0x65c9da8, win=0x82c4aa8, scene=0x822c558, ar=0x82094b8, keyboarddevice=0x7e31440, mousedevice=0x7e32700, draw_letterbox=0)
    at /home/pgi/blender-git/blender/source/gameengine/BlenderRoutines/BL_KetsjiEmbedStart.cpp:136
#11 0x0000000002d9707b in StartKetsjiShell (C=0x65c9da8, ar=0x82094b8, cam_frame=0x7fffffffda90, always_use_expand_framing=1)
    at /home/pgi/blender-git/blender/source/gameengine/BlenderRoutines/BL_KetsjiEmbedStart.cpp:573
- 12 0x0000000001c518fd in game_engine_exec (C=0x65c9da8, op=0x6ab4da8) at /home/pgi/blender-git/blender/source/blender/editors/space_view3d/view3d_view.c:1665
- 13 0x0000000001b15ac0 in wm_operator_invoke (C=0x65c9da8, ot=0x69094e8, event=0x824e7c8, properties=0x7fe85b8, reports=0x0, poll_only=false)
    at /home/pgi/blender-git/blender/source/blender/windowmanager/intern/wm_event_system.c:1048
#14 0x0000000001b1702f in wm_handler_operator_call (C=0x65c9da8, handlers=0x8209600, handler=0x6ab9b78, event=0x824e7c8, properties=0x7fe85b8)
    at /home/pgi/blender-git/blender/source/blender/windowmanager/intern/wm_event_system.c:1639
- 15 0x0000000001b178c4 in wm_handlers_do_intern (C=0x65c9da8, event=0x824e7c8, handlers=0x8209600) at /home/pgi/blender-git/blender/source/blender/windowmanager/intern/wm_event_system.c:1904
- 16 0x0000000001b17c7c in wm_handlers_do (C=0x65c9da8, event=0x824e7c8, handlers=0x8209600) at /home/pgi/blender-git/blender/source/blender/windowmanager/intern/wm_event_system.c:2013
- 17 0x0000000001b18aff in wm_event_do_handlers (C=0x65c9da8) at /home/pgi/blender-git/blender/source/blender/windowmanager/intern/wm_event_system.c:2352
- 18 0x0000000001b0d4ec in WM_main (C=0x65c9da8) at /home/pgi/blender-git/blender/source/blender/windowmanager/intern/wm.c:487
#19 0x0000000001b0c697 in main (argc=1, argv=0x7fffffffded8) at /home/pgi/blender-git/blender/source/creator/creator.c:1864

The stack trace appears to be consistent on each crash.

I can confirm this on the latest sources (2.74 release). This is not related to the lib-free/lib-load material caching issue, it's a bug of its own. This is the stack trace of gdb: ``` Program received signal SIGSEGV, Segmentation fault. __strcmp_sse2_unaligned () at ../sysdeps/x86_64/multiarch/strcmp-sse2-unaligned.S:30 30 ../sysdeps/x86_64/multiarch/strcmp-sse2-unaligned.S: No such file or directory. (gdb) bt - 0 __strcmp_sse2_unaligned () at ../sysdeps/x86_64/multiarch/strcmp-sse2-unaligned.S:30 - 1 0x0000000002dea6e7 in BL_InterpolatorList::GetScalarInterpolator (this=0x7bfdcb0, rna_path=0x4a5d338 "location", array_index=0) at /home/pgi/blender-git/blender/source/gameengine/Converter/KX_BlenderScalarInterpolator.cpp:77 - 2 0x0000000002efb740 in BL_CreateIPO (action=0x7bef958, gameobj=0x99058d0, converter=0x6e1cad0) at /home/pgi/blender-git/blender/source/gameengine/Ketsji/KX_IpoConvert.cpp:123 - 3 0x0000000002ef9002 in BL_Action::Play (this=0x9977c00, name=0x7bef97a "CubeAction", start=1, end=60, priority=0, blendin=0, play_mode=0, layer_weight=-1, ipo_flags=0, playback_speed=1, blend_mode=0) at /home/pgi/blender-git/blender/source/gameengine/Ketsji/BL_Action.cpp:161 #4 0x0000000002edc456 in BL_ActionManager::PlayAction (this=0x9977b90, name=0x7bef97a "CubeAction", start=1, end=60, layer=0, priority=0, blendin=0, play_mode=0, layer_weight=-1, ipo_flags=0, playback_speed=1, blend_mode=0) at /home/pgi/blender-git/blender/source/gameengine/Ketsji/BL_ActionManager.cpp:115 #5 0x0000000002e6dc7f in KX_GameObject::PlayAction (this=0x99058d0, name=0x7bef97a "CubeAction", start=1, end=60, layer=0, priority=0, blendin=0, play_mode=0, layer_weight=0, ipo_flags=0, playback_speed=1, blend_mode=0) at /home/pgi/blender-git/blender/source/gameengine/Ketsji/KX_GameObject.cpp:459 - 6 0x0000000002de3f1d in BL_ActionActuator::Update (this=0x7b24bf0, curtime=72,06815317471542, frame=true) at /home/pgi/blender-git/blender/source/gameengine/Converter/BL_ActionActuator.cpp:282 - 7 0x0000000002f37030 in SCA_LogicManager::UpdateFrame (this=0x6ee2cd0, curtime=72,06815317471542, frame=true) at /home/pgi/blender-git/blender/source/gameengine/GameLogic/SCA_LogicManager.cpp:225 - 8 0x0000000002ebd1c0 in KX_Scene::LogicUpdateFrame (this=0x6ee12c0, curtime=72,06815317471542, frame=true) at /home/pgi/blender-git/blender/source/gameengine/Ketsji/KX_Scene.cpp:1675 - 9 0x0000000002e816e4 in KX_KetsjiEngine::NextFrame (this=0x6ab8ae0) at /home/pgi/blender-git/blender/source/gameengine/Ketsji/KX_KetsjiEngine.cpp:678 #10 0x0000000002d95a2a in BL_KetsjiNextFrame (ketsjiengine=0x6ab8ae0, C=0x65c9da8, win=0x82c4aa8, scene=0x822c558, ar=0x82094b8, keyboarddevice=0x7e31440, mousedevice=0x7e32700, draw_letterbox=0) at /home/pgi/blender-git/blender/source/gameengine/BlenderRoutines/BL_KetsjiEmbedStart.cpp:136 #11 0x0000000002d9707b in StartKetsjiShell (C=0x65c9da8, ar=0x82094b8, cam_frame=0x7fffffffda90, always_use_expand_framing=1) at /home/pgi/blender-git/blender/source/gameengine/BlenderRoutines/BL_KetsjiEmbedStart.cpp:573 - 12 0x0000000001c518fd in game_engine_exec (C=0x65c9da8, op=0x6ab4da8) at /home/pgi/blender-git/blender/source/blender/editors/space_view3d/view3d_view.c:1665 - 13 0x0000000001b15ac0 in wm_operator_invoke (C=0x65c9da8, ot=0x69094e8, event=0x824e7c8, properties=0x7fe85b8, reports=0x0, poll_only=false) at /home/pgi/blender-git/blender/source/blender/windowmanager/intern/wm_event_system.c:1048 #14 0x0000000001b1702f in wm_handler_operator_call (C=0x65c9da8, handlers=0x8209600, handler=0x6ab9b78, event=0x824e7c8, properties=0x7fe85b8) at /home/pgi/blender-git/blender/source/blender/windowmanager/intern/wm_event_system.c:1639 - 15 0x0000000001b178c4 in wm_handlers_do_intern (C=0x65c9da8, event=0x824e7c8, handlers=0x8209600) at /home/pgi/blender-git/blender/source/blender/windowmanager/intern/wm_event_system.c:1904 - 16 0x0000000001b17c7c in wm_handlers_do (C=0x65c9da8, event=0x824e7c8, handlers=0x8209600) at /home/pgi/blender-git/blender/source/blender/windowmanager/intern/wm_event_system.c:2013 - 17 0x0000000001b18aff in wm_event_do_handlers (C=0x65c9da8) at /home/pgi/blender-git/blender/source/blender/windowmanager/intern/wm_event_system.c:2352 - 18 0x0000000001b0d4ec in WM_main (C=0x65c9da8) at /home/pgi/blender-git/blender/source/blender/windowmanager/intern/wm.c:487 #19 0x0000000001b0c697 in main (argc=1, argv=0x7fffffffded8) at /home/pgi/blender-git/blender/source/creator/creator.c:1864 ``` The stack trace appears to be consistent on each crash.

Jorge Bernal commented

2015-05-15 15:50:16 +02:00

Added subscriber: @JorgeBernalMartinez