Operating system: Linux, Debian unstable
Graphics card: Radeon HD7950, used by Xorg via the "radeon" driver + GeForce GTX 1060 used for Cuda only
Broken: 2.80, 8a51af7d1c98, branch: blender2.7, 2019-01-31 21:41
Short description of error
Blender crashes with the following error message on some 3D manipulation/rendering
blender: ../src/gallium/drivers/radeonsi/si_descriptors.c:1489: si_desc_reset_buffer_offset: Assertion `old_buf_va <= old_desc_va' failed.
Exact steps for others to reproduce the error
I don't have a 100% reproductible scenario, but the minimal situation which triggers the crash quickly seems to be the following:
- on default scene, enable Render > Screen Space Reflections
- on default cube, enable Material > Settings > Blend mode = "Alpha Blend"
Upon pressing F12 for rendering, the crash may happen.
If not, moving the Image editor window which opened may trigger the crash.
If not, pressing F11 to go back to the 3D editor may crash blender.
If not, selecting an object in the 3D editor may crash blender.
If not, clicking to set focus on a property may crash blender.
At this point, I may have to go back to rendering and so for some iterations to trigger the crash.
So, blender can be crashing between 5 seconds and 5 minutes from starting it.
I know that non 100% reproducible bugs can be annoying. If needed I can try to build a debug build to provide a more complete stack trace.