Bug#847652: nvidia-kernel-dkms fails to compile for rt-kernel 4.8.0-1-rt

[Luca Boccassi]

On Sat, 2016-12-10 at 11:31 +0100, Klaumi Klingsporn wrote:
> Package: nvidia-kernel-dkms
> Version: 375.20-4
> Severity: important
> 
> Dear Maintainer,
> 
> trying to install the new version of nvidia-kernel-dkms today fails while compiling the module
> for linux-image-4.8.0-1-rt-amd64, even a manual call of dkms fails.
> 
> dkms -k 4.8.0-1-rt-amd64 -m nvidia-current -v 375.20 build
> gives me:
> 
> "Error! Bad return status for module build on kernel: 4.8.0-1-rt-amd64 (x86_64)
> Consult /var/lib/dkms/nvidia-current/375.20/build/make.log for more information."
> 
> /var/lib/dkms/nvidia-current/375.20/build/make.log:
> 
> "...
> FATAL: modpost: GPL-incompatible module nvidia-drm.ko uses GPL-only symbol 'rt_mutex_destroy'
> /usr/src/linux-headers-4.8.0-1-common-rt/scripts/Makefile.modpost:91: die Regel für Ziel „__modpost“ scheiterte
> make[3]: *** [__modpost] Fehler 1
> ..."
> 
> Any idea how to fix this?
> 
> Klaumi

Hi,

Didn't even know Nvidia driver supported running on the RT kernel.

Is this a regression, or is it the first time you are trying this?

Kind regards,
Luca Boccassi
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