Bug#1009740: nvidia-graphics-drivers-tesla-450: new version of dkms seems to show the package doesn't work on arm64 and ppc64el

[Paul Gevers]

Source: nvidia-graphics-drivers-tesla-450
Version: 450.172.01-2
Severity: serious
X-Debbugs-CC: dkms at packages.debian.org
Tags: sid bookworm
User: debian-ci at lists.debian.org
Usertags: needs-update
Control: affects -1 src:dkms

Dear maintainer(s),

With a recent upload of dkms the autopkgtest of 
nvidia-graphics-drivers-tesla-450 fails in testing when that autopkgtest 
is run with the binary packages of dkms from unstable. It passes when 
run with only packages from testing. In tabular form:

                        pass            fail
dkms                   from testing    3.0.3-1
nvidia-graphics-drivers-tesla-450 from testing    450.172.01-2
all others             from testing    from testing

I copied some of the output at the bottom of this report. Similar to bug 
#976901 this seems to show the package doesn't actually work on arm64 or 
ppc64el, at least not on the ci.d.n infrastructure (running the stable 
kernel).

Currently this regression is blocking the migration of dkms to testing 
[1]. Of course, dkms shouldn't just break your autopkgtest (or even 
worse, your package), but it seems to me that the change in dkms was 
intended and your package needs to update to the new situation.

If this is a real problem in your package (and not only in your 
autopkgtest), the right binary package(s) from dkms should really add a 
versioned Breaks on the unfixed version of (one of your) package(s). 
Note: the Breaks is nice even if the issue is only in the autopkgtest as 
it helps the migration software to figure out the right versions to 
combine in the tests.

More information about this bug and the reason for filing it can be found on
https://wiki.debian.org/ContinuousIntegration/RegressionEmailInformation

Paul

[1] https://qa.debian.org/excuses.php?package=dkms

https://ci.debian.net/data/autopkgtest/testing/arm64/n/nvidia-graphics-drivers-tesla-450/20844150/log.gz

I: Trying to build nvidia-tesla-450/450.172.01 for 5.16.0-6-rt-arm64
Error! The 
/var/lib/dkms/nvidia-tesla-450/450.172.01/5.16.0-6-rt-arm64/aarch64/dkms.conf 
for module nvidia-tesla-450 includes a BUILD_EXCLUSIVE directive which 
does not match this kernel/arch.
This indicates that it should not be built.
I: nvidia-tesla-450/450.172.01 is not supported on 5.16.0-6-rt-arm64 
(BUILD_EXCLUSIVE directive), skipping
./nvidia-tesla-450/450.172.01/build/make.log
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