I can also confirm that: slab_common.usercopy_fallback=y works for 4-16-2. I have:
/etc/nvidia/current/nvidia-drm-outputclass.conf with this content: Section "OutputClass" Identifier "nvidia" MatchDriver "nvidia-drm" Driver "nvidia" ModulePath "/usr/lib/xorg/modules/linux" EndSection also set in my system. I have looked at the nVidia bug report & it "seems" that according to one user: It seems to be fixed on 396.24. [ 1.040981] NVRM: loading NVIDIA UNIX x86_64 Kernel Module 396.24 Thu Apr 26 00:10:09 PDT 2018 (using threaded interrupts) [ 1.041976] nvidia-modeset: Loading NVIDIA Kernel Mode Setting Driver for UNIX platforms 396.24 Wed Apr 25 23:54:18 PDT 2018 [ 1.049701] nvidia-uvm: Loaded the UVM driver in 8 mode, major device number 243 [ 1.050203] Linux agpgart interface v0.103 [ 1.058829] [drm] [nvidia-drm] [GPU ID 0x00000100] Loading driver Kernel 4.16.8-1