Segmentation Fault when rendering with Cycles on 2.92 #87724

New Issue

Francisco Medina · 2021-04-22T20:25:45+02:00

Francisco Medina commented

2021-04-22 20:25:45 +02:00

System Information
Operating system: Linux Mint 20.1 Cinnamon, Linux-5.4.0-72-generic-x86_64-with-debian-bullseye-sid 64 Bits
Graphics card: AMD Radeon RX 570 Series ATI Technologies Inc. 4.5.14735 Core Profile Context 21.10 (Driver: amdgpu 21.10)

Blender Version
Broken: version: 2.92.0, branch: master, commit date: 2021-02-24 16:25, hash: 02948a2cab
Worked: 2.83.13 LTS, 2.83.14-d35974cd870b, (all previous LTS at this date)

Short description of error
Blender crashes with "Segmentation Fault (core dumped)" when rendering using Cycles and GPU Rendering

Exact steps for others to reproduce the error

Open Blender
Go to "Render Properties" and switch the engine to Cycles
Switch the "Device" option to GPU Compute
Make sure your graphics card is selected and enabled on Preferences > System
Switch to Viewport Shading or start a normal rendering of the actual default cube
After a couple minutes while compiling the render kernels, Blender should crash with a Segmentation Fault on console

Below i'll leave the blender.crash.txt generated:
blender.crash.txt

And the console output (with the flags --debug and --debug-cycles):
blenderconsoledump2.92.txt

And my system-info.txt:
system-info.txt

What i have tried

Upgrading and downgrading my GPU Driver
Clearing cycles cache ($HOME/.cache/cycles) before rendering
Switching to Experimental on Cycles options under the Render Properties
Running as root

CPU Rendering with Cycles and EEVEE runs fine without problems, only when using GPU Rendering problems start to appear.
All LTS versions of Blender at this date runs fine without these problems at all.
I don't have a Windows PC with me right now for test, might update in a while when i have access to it.

On Blender 2.93 and 3.0.0 this bug doesn't take effect, but there's a new different bug by doing the same steps on those versions which you can see here

**System Information** Operating system: Linux Mint 20.1 Cinnamon, Linux-5.4.0-72-generic-x86_64-with-debian-bullseye-sid 64 Bits Graphics card: AMD Radeon RX 570 Series ATI Technologies Inc. 4.5.14735 Core Profile Context 21.10 (Driver: amdgpu 21.10) **Blender Version** Broken: version: 2.92.0, branch: master, commit date: 2021-02-24 16:25, hash: `02948a2cab` Worked: 2.83.13 LTS, 2.83.14-d35974cd870b, (all previous LTS at this date) **Short description of error** Blender crashes with "Segmentation Fault (core dumped)" when rendering using Cycles and GPU Rendering **Exact steps for others to reproduce the error** 1) Open Blender 2) Go to "Render Properties" and switch the engine to Cycles 3) Switch the "Device" option to GPU Compute 4) Make sure your graphics card is selected and enabled on Preferences > System 5) Switch to Viewport Shading or start a normal rendering of the actual default cube 6) After a couple minutes while compiling the render kernels, Blender should crash with a Segmentation Fault on console Below i'll leave the blender.crash.txt generated: [blender.crash.txt](https://archive.blender.org/developer/F10032814/blender.crash.txt) And the console output (with the flags --debug and --debug-cycles): [blenderconsoledump2.92.txt](https://archive.blender.org/developer/F10032815/blenderconsoledump2.92.txt) And my system-info.txt: [system-info.txt](https://archive.blender.org/developer/F10032817/system-info.txt) **What i have tried** - Upgrading and downgrading my GPU Driver - Clearing cycles cache ($HOME/.cache/cycles) before rendering - Switching to Experimental on Cycles options under the Render Properties - Running as root CPU Rendering with Cycles and EEVEE runs fine without problems, only when using GPU Rendering problems start to appear. All LTS versions of Blender at this date runs fine without these problems at all. I don't have a Windows PC with me right now for test, might update in a while when i have access to it. On Blender 2.93 and 3.0.0 this bug doesn't take effect, but there's a new different bug by doing the same steps on those versions which you can see [here ](https://developer.blender.org/T87726)

Francisco Medina commented

2021-04-22 20:25:45 +02:00

Added subscriber: @PANCHO7532

Francisco Medina changed title from ~~Segmentation Fault when rendering with Cycles on 2.92+~~ to Segmentation Fault when rendering with Cycles on 2.92

2021-04-22 20:50:05 +02:00

zak morgan commented

2021-04-30 23:21:43 +02:00

Added subscriber: @zipy124

zak morgan commented

2021-04-30 23:21:43 +02:00

I am also getting a segmentation fault when using cycles, however under CPU rendering not GPU. Running fedora 33 (kernel 5.11.13-200.fc33.x86_64) on an Intel® Core™ i5-8350U CPU under wayland.blender.crash.txt

I am also getting a segmentation fault when using cycles, however under CPU rendering not GPU. Running fedora 33 (kernel 5.11.13-200.fc33.x86_64) on an Intel® Core™ i5-8350U CPU under wayland.[blender.crash.txt](https://archive.blender.org/developer/F10047730/blender.crash.txt)

Krystian Zajdel commented

2021-05-04 20:22:21 +02:00

Added subscriber: @enenra

Krystian Zajdel commented

2021-05-04 20:22:21 +02:00

System Information
Operating system: Linux-5.12.1-custom-x86_64-AMD_Ryzen_5_5600X_6-Core_Processor-with-slackware-14.2 64 Bits
Graphics card: AMD Radeon (TM) RX 480 Graphics (POLARIS10, DRM 3.40.0, 5.12.1-custom, LLVM 11.1.0) AMD 4.6 (Core Profile) Mesa 21.0.3

Blender Version
Broken: version: 2.92.0, branch: master, commit date: 2021-02-24 16:25, hash: 02948a2cab
Worked: (newest version of Blender that worked as expected)

Short description of error
I have the same issue.

./blender --debug-gpu
Read prefs: /home/sanjuro/.config/blender/2.92/config/userpref.blend
Cycles: compiling OpenCL program background...
Cycles: compiling OpenCL program background...
Writing: /tmp/blender.crash.txt
Segmentation fault

**System Information** Operating system: Linux-5.12.1-custom-x86_64-AMD_Ryzen_5_5600X_6-Core_Processor-with-slackware-14.2 64 Bits Graphics card: AMD Radeon (TM) RX 480 Graphics (POLARIS10, DRM 3.40.0, 5.12.1-custom, LLVM 11.1.0) AMD 4.6 (Core Profile) Mesa 21.0.3 **Blender Version** Broken: version: 2.92.0, branch: master, commit date: 2021-02-24 16:25, hash: `02948a2cab` Worked: (newest version of Blender that worked as expected) **Short description of error** I have the same issue. ``` ./blender --debug-gpu Read prefs: /home/sanjuro/.config/blender/2.92/config/userpref.blend Cycles: compiling OpenCL program background... Cycles: compiling OpenCL program background... Writing: /tmp/blender.crash.txt Segmentation fault ```

David commented

2021-05-09 16:01:52 +02:00

Added subscriber: @clusterlight

rohan stevenson commented

2021-06-08 16:05:52 +02:00

Added subscriber: @rohan.stevenson

rohan stevenson commented

2021-06-08 16:05:52 +02:00

I am also getting the same fault rendering in command line mode rendering both cycles and eevee. (Cycles Scene 1, Eevee scene 2). I can render about 10 frames before blender crashes with this fault. The renders themselves - ie the rendered frames before the crash - are all fine.

I should add that the cycles render is using Optix GPU and CPU.

I have also been having problems with blender not rendering in UI mode and more recently not rendering at all - hanging on updating objects flags. I do not know if the are related: https://developer.blender.org/T88435

I have not tried the recent file (segmentation fault and core dump) on a different machine as yet. The machine I am running:

Ryzen 3950X, 64 Gb, NVIDIA RTX 3070, Linux Ubuntu (latest).
Blender 2.93

Crash text: 25 Minisub Chases Nautilus.crash.txt.zip

I am also getting the same fault rendering in command line mode rendering both cycles and eevee. (Cycles Scene 1, Eevee scene 2). I can render about 10 frames before blender crashes with this fault. The renders themselves - ie the rendered frames before the crash - are all fine. I should add that the cycles render is using Optix GPU and CPU. I have also been having problems with blender not rendering in UI mode and more recently not rendering at all - hanging on updating objects flags. I do not know if the are related: https://developer.blender.org/T88435 I have not tried the recent file (segmentation fault and core dump) on a different machine as yet. The machine I am running: Ryzen 3950X, 64 Gb, NVIDIA RTX 3070, Linux Ubuntu (latest). Blender 2.93 Crash text: [25 Minisub Chases Nautilus.crash.txt.zip](https://archive.blender.org/developer/F10162594/25_Minisub_Chases_Nautilus.crash.txt.zip)

rohan stevenson commented

2021-06-12 11:31:21 +02:00

I have more information on this problem.

I am not getting any segmentation faults on the machines running windows. This appears to be a problem with linux. I have updated the driver (clean install) to the latest 465 NVIDIA driver and the problem has improved but not gone away altogether. The machines running Windows are approximately half as powerful as my main machine in the post above. The 2 machines I tried were i7 8-core 128 Gb RAM RTX 2060, and a Ryzen 8-core 32 Gb, RTX 2070 Super.

I have more information on this problem. I am not getting any segmentation faults on the machines running windows. This appears to be a problem with linux. I have updated the driver (clean install) to the latest 465 NVIDIA driver and the problem has improved but not gone away altogether. The machines running Windows are approximately half as powerful as my main machine in the post above. The 2 machines I tried were i7 8-core 128 Gb RAM RTX 2060, and a Ryzen 8-core 32 Gb, RTX 2070 Super.

rohan stevenson commented

2021-06-16 23:51:49 +02:00

Hello, is there any update on this problem?

I am unable to render more than a few frames on linux using a 3950X Ryzen 16-core 64 Gb RAM and an RTX 3070, where as my old Windows machine i7 8-core with RTX 2060 is able render without crashing. I note that this bug is set to "needs triage" - do we have a time frame or any further information that might help us work around this until this is fixed?

I am going to have to re-install windows on the main machine....shame.

Hello, is there any update on this problem? I am unable to render more than a few frames on linux using a 3950X Ryzen 16-core 64 Gb RAM and an RTX 3070, where as my old Windows machine i7 8-core with RTX 2060 is able render without crashing. I note that this bug is set to "needs triage" - do we have a time frame or any further information that might help us work around this until this is fixed? I am going to have to re-install windows on the main machine....shame.

Omar Emara commented

2022-02-24 11:24:48 +01:00

Added subscriber: @OmarEmaraDev

Omar Emara commented

2022-02-24 11:24:48 +01:00

Changed status from 'Needs Triage' to: 'Needs User Info'

Omar Emara commented

2022-02-24 11:24:48 +01:00

The crash happens in the OpenCL driver, which is most likely fixed in 91c44fe885. Can you update your drivers and try 2.93?

The crash happens in the OpenCL driver, which is most likely fixed in 91c44fe885. Can you update your drivers and try 2.93?

Brecht Van Lommel commented

2022-02-24 12:02:37 +01:00

Added subscriber: @brecht

Brecht Van Lommel commented

2022-02-24 12:02:37 +01:00

Changed status from 'Needs User Info' to: 'Archived'

Brecht Van Lommel closed this issue

2022-02-24 12:02:37 +01:00

Brecht Van Lommel commented

2022-02-24 12:02:37 +01:00

The original report states that 2.93 works, but has a different problem reported elsewhere.

As we are no longer fixing bugs in 2.92, there is no point keeping this bug report open for that purpose.

There were potentially different bugs reported in the comments, those should be handled as their own bug report.

The original report states that 2.93 works, but has a different problem reported elsewhere. As we are no longer fixing bugs in 2.92, there is no point keeping this bug report open for that purpose. There were potentially different bugs reported in the comments, those should be handled as their own bug report.

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Segmentation Fault when rendering with Cycles on 2.92 #87724