BVHTree.FromObject crashes with pthread priority assertion when called in quick succession on same object #59869

New Issue

Michel Anders · 2018-12-26T11:57:24+01:00

Michel Anders commented

2018-12-26 11:57:24 +01:00

System Information
Operating system: Ubuntu 18.04 Linux
Graphics card: GTX 1080

Blender Version
Broken: blender-2.80-6d89337257b6-linux-glibc224-x86_64

Short description of error

BVHTree.FromObject crashes with pthread priority assertion when called in quick succession on same object

pthread-bug.py

system-info-pthread-bug.txt

Exact steps for others to reproduce the error

open default blender scene and install/enable add-on
go to Texture Paint workspace and switch to Vertex Paint Mode
from the Paint menu select Bug Test entry
click and drag anywhere in the scene until crash or alternatively,
repeatedly left mouse click anywhere quickly

observed behaviour:

sometimes a simple crash with no additional info
otherwise a assert message:
blender: tpp.c:84: __pthread_tpp_change_priority: Assertion `new_prio == -1 || (new_prio >= fifo_min_prio && new_prio <= fifo_max_prio)' failed.

**System Information** Operating system: Ubuntu 18.04 Linux Graphics card: GTX 1080 **Blender Version** Broken: blender-2.80-6d89337257b6-linux-glibc224-x86_64 **Short description of error** BVHTree.FromObject crashes with pthread priority assertion when called in quick succession on same object [pthread-bug.py](https://archive.blender.org/developer/F6075624/pthread-bug.py) [system-info-pthread-bug.txt](https://archive.blender.org/developer/F6075631/system-info-pthread-bug.txt) **Exact steps for others to reproduce the error** - open default blender scene and install/enable add-on - go to Texture Paint workspace and switch to Vertex Paint Mode - from the Paint menu select Bug Test entry - click and drag anywhere in the scene until crash or alternatively, - repeatedly left mouse click anywhere quickly observed behaviour: - sometimes a simple crash with no additional info - otherwise a assert message: blender: tpp.c:84: __pthread_tpp_change_priority: Assertion `new_prio == -1 || (new_prio >= fifo_min_prio && new_prio <= fifo_max_prio)' failed.

Michel Anders commented

2018-12-26 11:57:24 +01:00

Added subscriber: @MichelAnders

Michel Anders commented

2018-12-26 12:34:31 +01:00

PS> this might be related to https://developer.blender.org/T58734 but note that in that report the call reproducibly crashes on the second call whereas in this report it might take anywhere between 5 and 30 calls (depending on how quickly the calls happen?)

Sebastian Parborg commented

2018-12-27 13:52:04 +01:00

Added subscriber: @ZedDB

Sebastian Parborg commented

2018-12-27 13:52:04 +01:00

I had to call it multiple times to get the crash in some of the duplicates of blender/blender-addons#58734.

So I'll close this as duplicate too. You can always reopen this is this still happens when blender/blender-addons#58734 has been fixed as I suspect the root cause for these problems might be the same.

I had to call it multiple times to get the crash in some of the duplicates of blender/blender-addons#58734. So I'll close this as duplicate too. You can always reopen this is this still happens when blender/blender-addons#58734 has been fixed as I suspect the root cause for these problems might be the same.

Sebastian Parborg commented

2018-12-27 13:52:17 +01:00

Closed as duplicate of blender/blender-addons#58734

Sebastian Parborg closed this issue

2018-12-27 13:52:17 +01:00

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BVHTree.FromObject crashes with pthread priority assertion when called in quick succession on same object #59869