Repeatedly alternating LibLoad and LibFree with delays causes random crashes #35845

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Kevin Ednalino · 2013-06-23T04:50:04+02:00

Kevin Ednalino commented

2013-06-23 04:50:04 +02:00

Category: Python

%%%LibLoad/LibFree appears unstable on Arch Linux 64-bit. Test.blend eventually crashes, randomly. Sometimes with a segfault; sometimes it fails to do a core dump. Various errors include corrupted double-linked list, invalid pointers. Sometimes it simply just hangs and stops responding.

Test contains a Cube named 'existing_cube' and a Camera, all on 'Scene'. Cube2 contains only a single cube named 'test_cube' on 'Scene'. Place both blends in the same directory. Open test.blend. Hit 'P'. It will repeatedly call LibLoad and LibFree alternating with a delay in between. Console prints out indication of each iteration.

Test.blend appears to run on Windows 7 Ultimate 64-bit SP 1 without problems indefinitely on:

CPU: Intel Core i5-3317U CPU @ 1.70 Ghz 1.70 Ghz
RAM: 6 GB
GFX: Intel HD Graphics 4000, NVIDIA GeForce 610M Driver.
OS: Windows 7 Ultimate 64-bit Service Pack 1
Drivers: Intel 4.0.0 - Build 9.18.10.3071, GeForce 310.90 (Bumblebee, Blender uses Intel GPU)
Blender: 2.67b 2.67.0 r57141

It eventually fails on Linux system:

CPU: Intel(R) Xeon(R) CPU E5345 @ 2.33GHz [Dual-CPU| 2 x Quad-core = 8 cores @ 2.33GHz]
RAM: 9.75 GB
GFX: NVIDIA Corporation GT218 [GeForce 210] (rev a2) 1GB 64-bit DDR3 PCI Express 2.0 x16
OS: Linux version 3.9.7-1-ck (squishy@ease) (gcc version 4.8.1 (GCC) ) #1 SMP PREEMPT
Drivers: nouveau-dri 9.1.3-2, xf86-video-nouveau 1.0.8-1
Blender: 2.67b 2.67.1 r57180

Attached files are for Linux system.%%%

**Category**: Python %%%LibLoad/LibFree appears unstable on Arch Linux 64-bit. Test.blend eventually crashes, randomly. Sometimes with a segfault; sometimes it fails to do a core dump. Various errors include corrupted double-linked list, invalid pointers. Sometimes it simply just hangs and stops responding. Test contains a Cube named 'existing_cube' and a Camera, all on 'Scene'. Cube2 contains only a single cube named 'test_cube' on 'Scene'. Place both blends in the same directory. Open test.blend. Hit 'P'. It will repeatedly call LibLoad and LibFree alternating with a delay in between. Console prints out indication of each iteration. Test.blend appears to run on Windows 7 Ultimate 64-bit SP 1 without problems indefinitely on: CPU: Intel Core i5-3317U CPU @ 1.70 Ghz 1.70 Ghz RAM: 6 GB GFX: Intel HD Graphics 4000, NVIDIA GeForce 610M Driver. OS: Windows 7 Ultimate 64-bit Service Pack 1 Drivers: Intel 4.0.0 - Build 9.18.10.3071, GeForce 310.90 (Bumblebee, Blender uses Intel GPU) Blender: 2.67b 2.67.0 r57141 It eventually fails on Linux system: CPU: Intel(R) Xeon(R) CPU E5345 @ 2.33GHz [Dual-CPU| 2 x Quad-core = 8 cores @ 2.33GHz] RAM: 9.75 GB GFX: NVIDIA Corporation GT218 [GeForce 210] (rev a2) 1GB 64-bit DDR3 PCI Express 2.0 x16 OS: Linux version 3.9.7-1-ck (squishy@ease) (gcc version 4.8.1 (GCC) ) #1 SMP PREEMPT Drivers: nouveau-dri 9.1.3-2, xf86-video-nouveau 1.0.8-1 Blender: 2.67b 2.67.1 r57180 Attached files are for Linux system.%%%

Kevin Ednalino commented

2013-06-23 04:50:04 +02:00

Changed status to: 'Open'

blender-admin commented

2013-06-23 04:50:04 +02:00

#40172 was marked as duplicate of this issue

Kevin Ednalino commented

2013-07-25 21:00:12 +02:00

%%%Still unstable on Linux in 2.68. Still stable on Windows 7 Ultimate 64-bit in 2.68.%%%

Mitchell Stokes commented

2014-05-05 08:58:55 +02:00

Added subscriber: @Moguri

Mitchell Stokes commented

2014-05-05 08:58:55 +02:00

Note to self: this crash is caused by KX_BlenderSceneConverter::FreeBlendFile(). When cleaning up m_meshobjects, there seems to still be a pointer hanging around to the RAS_MeshObject. I believe m_materials and m_polymaterials may have similar issues if materials are LibLoaded.

Bastien Montagne commented

2014-05-13 17:01:05 +02:00

Added subscriber: @raco

Bastien Montagne commented

2014-05-13 17:01:05 +02:00

◀ Merged tasks: #40172.

Mitchell Stokes commented

2014-05-14 00:57:41 +02:00

After commit 23b682d594, I only get crashing if the LibLoaded cube does not have a material. I don't have a fix, but a work-around that can be used in the meantime is to make sure all libloaded assets have a material.

After commit 23b682d594, I only get crashing if the LibLoaded cube does not have a material. I don't have a fix, but a work-around that can be used in the meantime is to make sure all libloaded assets have a material.

Kevin Ednalino commented

2014-05-14 01:48:54 +02:00

Ah, awesome! This could probably be marked as resolved. Hmm, is it possible to use a default material if no material exists?

Mitchell Stokes commented

2014-05-15 04:10:53 +02:00

Changed status from 'Open' to: 'Duplicate'

Mitchell Stokes closed this issue

2014-05-15 04:10:53 +02:00

Mitchell Stokes commented

2014-05-15 04:10:54 +02:00

✘ Merged into #40199.

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Repeatedly alternating LibLoad and LibFree with delays causes random crashes #35845