OpenVDB from Houdini crashing blender when motion blur is enabled! #78038

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System Information
Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: GeForce GTX 1070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 442.92

Blender Version
Broken: version: 2.83.0, branch: master, commit date: 2020-06-03 14:38, hash: 211b6c29f7
Worked: (newest version of Blender that worked as expected)

Short description of error
Hello, i made "powder simulation" in Houdini which consists alembic file with particles and openVDB with smoke sim.
When i turn on motion blur, Blender randomly crashing on initializing stage(it dont happen everytime, just something like once in 3 attempts, but this does not allow me to start animation render, becasue I would have to watch it and one frame render quite a long time). The problem lies in vdb because particles themselves never crash. Is there any workaround for it? I tired render particles with motion blur and smoke separatly and composite it later but i think without any smoke depth information its impossible.

Exact steps for others to reproduce the error
Open Blender and just import openVDB from Houdini via new openVDB importer and enable motion blur in render properties or vector pass in view layer properties.
Add camera and now randomly render any 1-60 frames. I think you won't have to wait long for crash.
Here is my openVDB file Barley_Grass_volume.zip

#78038.blend

**System Information** Operating system: Windows-10-10.0.18362-SP0 64 Bits Graphics card: GeForce GTX 1070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 442.92 **Blender Version** Broken: version: 2.83.0, branch: master, commit date: 2020-06-03 14:38, hash: `211b6c29f7` Worked: (newest version of Blender that worked as expected) **Short description of error** Hello, i made "powder simulation" in Houdini which consists alembic file with particles and openVDB with smoke sim. When i turn on motion blur, Blender randomly crashing on initializing stage(it dont happen everytime, just something like once in 3 attempts, but this does not allow me to start animation render, becasue I would have to watch it and one frame render quite a long time). The problem lies in vdb because particles themselves never crash. Is there any workaround for it? I tired render particles with motion blur and smoke separatly and composite it later but i think without any smoke depth information its impossible. **Exact steps for others to reproduce the error** Open Blender and just import openVDB from Houdini via new openVDB importer and enable motion blur in render properties or vector pass in view layer properties. Add camera and now randomly render any 1-60 frames. I think you won't have to wait long for crash. Here is my openVDB file [Barley_Grass_volume.zip](https://archive.blender.org/developer/F8632235/Barley_Grass_volume.zip) [#78038.blend](https://archive.blender.org/developer/F8639037/T78038.blend)

Added subscriber: @dawidwizor

Added subscriber: @David_Hinton

I can confirm that this happens on Windows 10 (1909). I got it to happen on both 2.83 as well as on a recent commit in master (0ded6f5525) using Cycles.
The error was an EXCEPTION_ACCESS_VIOLATION.

Here's my crash report: P1480

I can confirm that this happens on Windows 10 (1909). I got it to happen on both 2.83 as well as on a recent commit in master (0ded6f5525) using Cycles. The error was an EXCEPTION_ACCESS_VIOLATION. Here's my crash report: [P1480](https://archive.blender.org/developer/P1480.txt)

Added subscriber: @lichtwerk

Changed status from 'Needs Triage' to: 'Confirmed'

Also getting a crash here.

This issue was referenced by blender/cycles@4ee3b49646

This issue was referenced by blender/cycles@4ee3b496466740d3fb8076914584e2987a145716

This issue was referenced by 8a129041c5

This issue was referenced by 8a129041c50188f3ca3afe8d185a781f3c041f11

This issue was referenced by 6ac235a6f7

This issue was referenced by 6ac235a6f75b71ec3d37dabc2e86b032e07c868e

Changed status from 'Confirmed' to: 'Resolved'

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OpenVDB from Houdini crashing blender when motion blur is enabled! #78038