Bug#901919: nvidia-driver: black screen with the latest Linux kernel

[Raphael Hertzog]

Hi,

On Fri, 22 Jun 2018, Luca Boccassi wrote:
> I am downgrading as I verified there is a working workaround, add the
> following to the kernel cmdline:
> 
> slab_common.usercopy_fallback=y

It's still hitting users hard until they find out this bug report.

> It might be possible to fix, and someone at gr security published a
> patch that among other things changes the module to use the correct API
> (although for an older version):
> https://www.grsecurity.net/~paxguy1/nvidia-drivers-387.12-pax.patch
> 
> but given it's non-trivial and there is a working cmdline workaround,
> I'm not going to try and apply that patch, and Nvidia is looking into
> it.

RedHat published a much less invasive patch that you can use
in the mean time:
https://bugzilla.redhat.com/attachment.cgi?id=1425704
(part of https://bugzilla.redhat.com/show_bug.cgi?id=1570493 )

In https://devtalk.nvidia.com/default/topic/1031067/linux/-linux416-nvidia-390-48-nvidia_stack_cache-rip-0010-usercopy_warn-0x7e-0xa0/post/5268599/#5268599 someone confirmed that the above patch works so it's no longer "untested" contrary to what its author said.

Otherwise, according to various bug reports, it seems to not happen in
version 396.24 although the above patch seems to not have been applied
in this version. Maybe you could update the package to this version at
least in experimental?

Cheers,
-- 
Raphaël Hertzog ◈ Debian Developer

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