Bug#900248: nvidia-driver: update to 390.59 breaks direct rendering

[Holger Schröder]

Am 22.06.2018 um 23:29 schrieb Luca Boccassi:
> On Fri, 2018-06-22 at 21:37 +0200, Andreas Beckmann wrote:
>> On 2018-06-22 12:58, Holger Schröder wrote:
>>> The changes in /etc/nvidia/current/nvidia-drm-outputclass.conf
>>> solve the
>>> Problem and works.
>>>
>>> But after Kernelupdate to linux-image-4.16.0-2-amd64 (4.16.16-1)
>>> boot
>>> into a black Screen,  4.16.12-1 workd fine.
>> Unrelated problem, just nasty to have two big ones at the same time.
> It might be possible to patch the module for the usercopy stack issue,
> but it's quite tricky, the folks at gr security seem to be patching the
> driver with the needed change:
>
> https://www.grsecurity.net/~paxguy1/nvidia-drivers-387.12-pax.patch
>
> But given the workaround seems to work fine I wouldn't bother and I'd
> let Nvidia sort it out.
>
> The workaround is to add to the cmdline:
>
> slab_common.usercopy_fallback=y
Thanks, it works