So in the packaged Shipping build of my game, users have been reporting random GPU crashes. I have collected the nvidia ueaftermath files and been opening them in NVIDIA Nsight Graphics and they all have the same message:
MMU Fault Error during a GPU memory Read at address 0x0000000000000000 in this shader location:
Closest Hit (MaterialCHS) Shader [ray_tracing_01 @ 0x000040d0 ](Shader1)[](Shader1)
A shader instruction caused an MMU fault when accessing memory.
This can be caused by shader bugs and binding setup issues, or possibly by a shader compiler bug or shader microcode corruption.
Access originating from Graphics Processing Cluster failed with the following error:
Failed to translate the virtual address.
A MMU fault in the Graphics Processing Cluster may indicate texture fetch or other shader memory issues.
Not sure how on earth to find the material causing this or begin debugging it. I haven’t written any custom shader code, only UE mats. Also the crash doesn’t happen upon launch or going into a specific area of the map, just randomly over time.
EDIT: My rendering settings are:
Notably I have ray tracing enabled so maybe related to this