o1bigtenor:
...
> I'm told to:
>
> rebuild the kernel with CONFIG_NOUVEAU_DEBUG_PUSH=y
...

That config is used in:
drivers/gpu/drm/nouveau/include/nvif/push.h

its latest commit is d502297008142645edf5c791af424ed321e5da84
from 2021-01-19, so you need kernel v5.11-rc6 or later. So
get a suffiently new kernel and do as they say.

Regards,
/Karl Hammar