Bug#764639: libgl1-nvidia-glx: failst to upgrade or install with KMS (nouveau) active

[Luca Boccassi]

On Sat, 11 Feb 2017 00:06:32 +0100 Andreas Beckmann <anbe at debian.org> wrote:
> Control: tag -1 - moreinfo
>
> On Fri, 10 Oct 2014 09:14:17 +0200 Andreas Beckmann <anbe at debian.org> wrote:
> > The only point I could imagine to "block" is when the script tries to
> > read /proc/driver/nvidia/version - which should only exist if the driver
> > got loaded properly.
>
> Today I ran into this problem, too. :-)
>
> Problem is that the 340xx driver (didn't check 304xx) does not
> unregister the proc entries if it aborts loading (due to nouveau being
> loaded already). The error unwinding is a mess! 375.26 is correct in
> that respect. So the script tries to access stale proc entries resulting in
>   BUG: unable to handle kernel paging request at ...
> I have tested a small patch that adds a call to nv_unregister_proc(),
> which was sufficient to fix my problem. It is probably not correct for
> all unwinding paths ...
>
>
> Andreas

Nice catch! Never came across this issue myself.
Should we try to get this fix in Stretch if no issues are found in sid
for a while?

Kind regards,
Luca Boccassi