Blender game embedded player crash #46090

New Issue

José Ricarte · 2015-09-12T21:42:34+02:00

José Ricarte commented

2015-09-12 21:42:34 +02:00

System Information
CPU device capabilities: SSE2 SSE3 SSE41 AVX
renderer: 'GeForce GT 630/PCIe/SSE2'
vendor: 'NVIDIA Corporation'
version: '4.5.0 NVIDIA 346.82'

Blender Version
version 2.75 (sub 4), branch b'master', commit date b'2015-09-09' b'15:06', hash b'a2a0e7a', b'Release'
build date: b'2015-09-09', b'16:19:51'
platform: b'Linux:64bit'

Short description of error
Default file, Blender game render engine, star embedded player game engine and blender crash

**System Information** CPU device capabilities: SSE2 SSE3 SSE41 AVX renderer: 'GeForce GT 630/PCIe/SSE2' vendor: 'NVIDIA Corporation' version: '4.5.0 NVIDIA 346.82' **Blender Version** version 2.75 (sub 4), branch b'master', commit date b'2015-09-09' b'15:06', hash b'a2a0e7a', b'Release' build date: b'2015-09-09', b'16:19:51' platform: b'Linux:64bit' **Short description of error** Default file, Blender game render engine, star embedded player game engine and blender crash

José Ricarte commented

2015-09-12 21:42:34 +02:00

Changed status to: 'Open'

José Ricarte commented

2015-09-12 21:42:34 +02:00

Added subscriber: @ciriaco

Campbell Barton commented

2015-09-15 10:31:51 +02:00

Added subscriber: @ideasman42

Campbell Barton commented

2015-09-15 10:31:51 +02:00

This isn't enough to go on, tested the player and it works here.
Could you run the player from a terminal and see if there is any messages printed?

This isn't enough to go on, tested the player and it works here. Could you run the player from a terminal and see if there is any messages printed?

José Ricarte commented

2015-09-15 13:09:00 +02:00

Ok:

Terminal:
ciriaco@fenix-ciriacus:~$ '/home/ciriaco/Escritorio/blender-2.76-testbuild2-linux-glibc211-x86_64/blender'
connect failed: No such file or directory
Read new prefs: /home/ciriaco/.config/blender/2.75/config/userpref.blend
found bundled python: /home/ciriaco/Escritorio/blender-2.76-testbuild2-linux-glibc211-x86_64/2.75/python
Detected GL_ARB_texture_env_combine
Detected GL_ARB_texture_cube_map
Detected GL_ARB_multitexture
Detected GL_ARB_shader_objects
Detected GL_ARB_vertex_shader
Detected GL_ARB_fragment_shader
Detected GL_ARB_vertex_program
Detected GL_ARB_depth_texture
Detected GL_EXT_separate_specular_color
Writing: /tmp/blender.crash.txt
Violación de segmento (`core' generado)

blender.crash.txt :

Blender 2.75 (sub 4), Commit date: 2015-09-09 15:06, Hash `a2a0e7a`

bpy.context.scene.render.engine = 'BLENDER_GAME' # Property

backtrace

/home/ciriaco/Escritorio/blender-2.76-testbuild2-linux-glibc211-x86_64/blender(BLI_system_backtrace+0x1d) [0x1a3adbd]
/home/ciriaco/Escritorio/blender-2.76-testbuild2-linux-glibc211-x86_64/blender() [0x1056234]
/home/ciriaco/Escritorio/blender-2.76-testbuild2-linux-glibc211-x86_64/blender() [0x1056411]
/lib/x86_64-linux-gnu/libc.so.6(+0x36d40) [0x7f876c0a6d40]
/home/ciriaco/Escritorio/blender-2.76-testbuild2-linux-glibc211-x86_64/blender(_Z23initGamePythonScriptingP4Main+0x2a) [0x19571ba]
/home/ciriaco/Escritorio/blender-2.76-testbuild2-linux-glibc211-x86_64/blender(_Z15setupGamePythonP15KX_KetsjiEngineP8KX_SceneP4MainP7_objectPS6_S7_iPPc+0xd5) [0x1957485]
/home/ciriaco/Escritorio/blender-2.76-testbuild2-linux-glibc211-x86_64/blender(StartKetsjiShell+0x869) [0x18e3f69]
/home/ciriaco/Escritorio/blender-2.76-testbuild2-linux-glibc211-x86_64/blender() [0x10e4f24]
/home/ciriaco/Escritorio/blender-2.76-testbuild2-linux-glibc211-x86_64/blender() [0x1075f22]
/home/ciriaco/Escritorio/blender-2.76-testbuild2-linux-glibc211-x86_64/blender() [0x107642f]
/home/ciriaco/Escritorio/blender-2.76-testbuild2-linux-glibc211-x86_64/blender() [0x1385186]
/home/ciriaco/Escritorio/blender-2.76-testbuild2-linux-glibc211-x86_64/blender() [0x13972a1]
/home/ciriaco/Escritorio/blender-2.76-testbuild2-linux-glibc211-x86_64/blender() [0x1077796]
/home/ciriaco/Escritorio/blender-2.76-testbuild2-linux-glibc211-x86_64/blender() [0x1077ad6]
/home/ciriaco/Escritorio/blender-2.76-testbuild2-linux-glibc211-x86_64/blender(wm_event_do_handlers+0x1ba) [0x1077dea]
/home/ciriaco/Escritorio/blender-2.76-testbuild2-linux-glibc211-x86_64/blender(WM_main+0x18) [0x105e9c8]
/home/ciriaco/Escritorio/blender-2.76-testbuild2-linux-glibc211-x86_64/blender(main+0x556) [0x1058fb6]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf5) [0x7f876c091ec5]
/home/ciriaco/Escritorio/blender-2.76-testbuild2-linux-glibc211-x86_64/blender() [0xf5ad61]

Ok: Terminal: ciriaco@fenix-ciriacus:~$ '/home/ciriaco/Escritorio/blender-2.76-testbuild2-linux-glibc211-x86_64/blender' connect failed: No such file or directory Read new prefs: /home/ciriaco/.config/blender/2.75/config/userpref.blend found bundled python: /home/ciriaco/Escritorio/blender-2.76-testbuild2-linux-glibc211-x86_64/2.75/python Detected GL_ARB_texture_env_combine Detected GL_ARB_texture_cube_map Detected GL_ARB_multitexture Detected GL_ARB_shader_objects Detected GL_ARB_vertex_shader Detected GL_ARB_fragment_shader Detected GL_ARB_vertex_program Detected GL_ARB_depth_texture Detected GL_EXT_separate_specular_color Writing: /tmp/blender.crash.txt Violación de segmento (`core' generado) blender.crash.txt : # Blender 2.75 (sub 4), Commit date: 2015-09-09 15:06, Hash a2a0e7a bpy.context.scene.render.engine = 'BLENDER_GAME' # Property # backtrace /home/ciriaco/Escritorio/blender-2.76-testbuild2-linux-glibc211-x86_64/blender(BLI_system_backtrace+0x1d) [0x1a3adbd] /home/ciriaco/Escritorio/blender-2.76-testbuild2-linux-glibc211-x86_64/blender() [0x1056234] /home/ciriaco/Escritorio/blender-2.76-testbuild2-linux-glibc211-x86_64/blender() [0x1056411] /lib/x86_64-linux-gnu/libc.so.6(+0x36d40) [0x7f876c0a6d40] /home/ciriaco/Escritorio/blender-2.76-testbuild2-linux-glibc211-x86_64/blender(_Z23initGamePythonScriptingP4Main+0x2a) [0x19571ba] /home/ciriaco/Escritorio/blender-2.76-testbuild2-linux-glibc211-x86_64/blender(_Z15setupGamePythonP15KX_KetsjiEngineP8KX_SceneP4MainP7_objectPS6_S7_iPPc+0xd5) [0x1957485] /home/ciriaco/Escritorio/blender-2.76-testbuild2-linux-glibc211-x86_64/blender(StartKetsjiShell+0x869) [0x18e3f69] /home/ciriaco/Escritorio/blender-2.76-testbuild2-linux-glibc211-x86_64/blender() [0x10e4f24] /home/ciriaco/Escritorio/blender-2.76-testbuild2-linux-glibc211-x86_64/blender() [0x1075f22] /home/ciriaco/Escritorio/blender-2.76-testbuild2-linux-glibc211-x86_64/blender() [0x107642f] /home/ciriaco/Escritorio/blender-2.76-testbuild2-linux-glibc211-x86_64/blender() [0x1385186] /home/ciriaco/Escritorio/blender-2.76-testbuild2-linux-glibc211-x86_64/blender() [0x13972a1] /home/ciriaco/Escritorio/blender-2.76-testbuild2-linux-glibc211-x86_64/blender() [0x1077796] /home/ciriaco/Escritorio/blender-2.76-testbuild2-linux-glibc211-x86_64/blender() [0x1077ad6] /home/ciriaco/Escritorio/blender-2.76-testbuild2-linux-glibc211-x86_64/blender(wm_event_do_handlers+0x1ba) [0x1077dea] /home/ciriaco/Escritorio/blender-2.76-testbuild2-linux-glibc211-x86_64/blender(WM_main+0x18) [0x105e9c8] /home/ciriaco/Escritorio/blender-2.76-testbuild2-linux-glibc211-x86_64/blender(main+0x556) [0x1058fb6] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf5) [0x7f876c091ec5] /home/ciriaco/Escritorio/blender-2.76-testbuild2-linux-glibc211-x86_64/blender() [0xf5ad61]

Sybren A. Stüvel commented

2015-09-17 08:52:19 +02:00

Added subscriber: @dr.sybren

Sybren A. Stüvel commented

2015-09-17 08:52:19 +02:00

I can confirm the crash using testbuild2 on Kubuntu 15.04 64-bit.
The strange thing is that when I build version a2a0e7a locally (CMake/gcc 4.9.2-10ubuntu13) it runs just fine. This makes it hard to debug, as a debug build doesn't crash :(

A second test using blender-2.75-79c668d-linux-glibc211-x86_64.tar.bz2 also crashes.

This is the decompiled assembly at the crash:

        Function: _Z23initGamePythonScriptingP4Main
0x1957dd6  <+0x0016>         lea    0x353b20a(%rip),%edi        # 0x4e92fe6
0x1957ddc  <+0x001c>         xor    %r8d,%r8d
0x1957ddf  <+0x001f>         xor    %ecx,%ecx
0x1957de1  <+0x0021>         xor    %edx,%edx
0x1957de3  <+0x0023>         xor    %esi,%esi
0x1957de5  <+0x0025>         callq  0x364dc00 <PyImport_ImportModuleLevel>
0x1957dea  <+0x002a>  CRASH  subq   $0x1,(%rax)
0x1957dee  <+0x002e>         jne    0x1957dfa <_Z23initGamePythonScriptingP4Main+58>
0x1957df0  <+0x0030>         mov    0x8(%rax),%rdx
0x1957df4  <+0x0034>         mov    %rax,%rdi
0x1957df7  <+0x0037>         callq  *0x30(%rdx)
0x1957dfa  <+0x003a>         callq  0x1957c30 <initBGE>
0x1957dff  <+0x003f>         mov    %rax,%rbx
0x1957e02  <+0x0042>         callq  0x364b8f0 <PyImport_GetModuleDict>
0x1957e07  <+0x0047>         lea    0x353b1dc(%rip),%rsi        # 0x4e92fea
0x1957e0e  <+0x004e>         mov    %rbx,%rdx
0x1957e11  <+0x0051>         mov    %rax,%rdi
0x1957e14  <+0x0054>         callq  0x35bc570 <PyDict_SetItemString>
0x1957e19  <+0x0059>         callq  0x19d40b0 <_ZN12PyObjectPlus22NullDeprecationWarningEv>
0x1957e1e  <+0x005e>         pop    %rbx
0x1957e1f  <+0x005f>         xor    %edi,%edi
0x1957e21  <+0x0061>         jmpq   0x1a1d380 <PyC_DefaultNameSpace>
0x1957e26                    nopw   %cs:0x0(%rax,%rax,1)

The crash happens at 0x1957dea, which is the line after the call to PyImport_ImportModuleLevel.

I'm not a master at assembly, but my bet is that PyImport_ImportModuleLevel returns NULL, which we subsequently try to Py_DECREF(), causing a crash.

On my self-build version, I can import the "aud" module (in Blender's Python console):

>>> import aud
>>> aud

<module 'aud' (built-in)>

However, on a buildbot-built version, I cannot:

>>> import aud

Traceback (most recent call last):
  File "<blender_console>", line 1, in <module>
ImportError: No module named 'aud'

I can confirm the crash using testbuild2 on Kubuntu 15.04 64-bit. The strange thing is that when I build version a2a0e7a locally (CMake/gcc 4.9.2-10ubuntu13) it runs just fine. This makes it hard to debug, as a debug build doesn't crash :( A second test using [blender-2.75-79c668d-linux-glibc211-x86_64.tar.bz2](https://builder.blender.org/download/) also crashes. This is the decompiled assembly at the crash: ``` Function: _Z23initGamePythonScriptingP4Main 0x1957dd6 <+0x0016> lea 0x353b20a(%rip),%edi # 0x4e92fe6 0x1957ddc <+0x001c> xor %r8d,%r8d 0x1957ddf <+0x001f> xor %ecx,%ecx 0x1957de1 <+0x0021> xor %edx,%edx 0x1957de3 <+0x0023> xor %esi,%esi 0x1957de5 <+0x0025> callq 0x364dc00 <PyImport_ImportModuleLevel> 0x1957dea <+0x002a> CRASH subq $0x1,(%rax) 0x1957dee <+0x002e> jne 0x1957dfa <_Z23initGamePythonScriptingP4Main+58> 0x1957df0 <+0x0030> mov 0x8(%rax),%rdx 0x1957df4 <+0x0034> mov %rax,%rdi 0x1957df7 <+0x0037> callq *0x30(%rdx) 0x1957dfa <+0x003a> callq 0x1957c30 <initBGE> 0x1957dff <+0x003f> mov %rax,%rbx 0x1957e02 <+0x0042> callq 0x364b8f0 <PyImport_GetModuleDict> 0x1957e07 <+0x0047> lea 0x353b1dc(%rip),%rsi # 0x4e92fea 0x1957e0e <+0x004e> mov %rbx,%rdx 0x1957e11 <+0x0051> mov %rax,%rdi 0x1957e14 <+0x0054> callq 0x35bc570 <PyDict_SetItemString> 0x1957e19 <+0x0059> callq 0x19d40b0 <_ZN12PyObjectPlus22NullDeprecationWarningEv> 0x1957e1e <+0x005e> pop %rbx 0x1957e1f <+0x005f> xor %edi,%edi 0x1957e21 <+0x0061> jmpq 0x1a1d380 <PyC_DefaultNameSpace> 0x1957e26 nopw %cs:0x0(%rax,%rax,1) ``` The crash happens at 0x1957dea, which is the line after the call to `PyImport_ImportModuleLevel`. I'm not a master at assembly, but my bet is that `PyImport_ImportModuleLevel` returns NULL, which we subsequently try to `Py_DECREF()`, causing a crash. On my self-build version, I can import the "aud" module (in Blender's Python console): ``` >>> import aud >>> aud <module 'aud' (built-in)> ``` However, on a buildbot-built version, I cannot: ``` >>> import aud Traceback (most recent call last): File "<blender_console>", line 1, in <module> ImportError: No module named 'aud' ```

blender-admin commented

2015-09-17 10:14:08 +02:00

This issue was referenced by eca704f579

This issue was referenced by eca704f579981b5d96f56999a298c0a74c3ef582

Sybren A. Stüvel commented

2015-09-17 10:14:29 +02:00

Changed status from 'Open' to: 'Resolved'

Sybren A. Stüvel closed this issue

2015-09-17 10:14:29 +02:00

Sybren A. Stüvel commented

2015-09-17 10:15:53 +02:00

Since I don't use SCons myself, but the buildbot does, we have to wait until another run of the buildbot to see if this is really fixed.

@ciriaco can you check with tomorrow's build?

Since I don't use SCons myself, but the buildbot does, we have to wait until another run of the buildbot to see if this is really fixed. @ciriaco can you check with tomorrow's build?

José Ricarte commented

2015-09-17 12:40:04 +02:00

Hi Sybren,

blender-2.75-a712459-linux-glibc211-x86_64 run Ok

Thanks for your work

Hi Sybren, blender-2.75-a712459-linux-glibc211-x86_64 run Ok Thanks for your work

Sybren A. Stüvel commented

2015-09-17 13:38:40 +02:00

Excellent! Thanks for checking.

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Blender game embedded player crash #46090

Blender 2.75 (sub 4), Commit date: 2015-09-09 15:06, Hash a2a0e7a

backtrace

Blender 2.75 (sub 4), Commit date: 2015-09-09 15:06, Hash `a2a0e7a`