cryptsetup autopkgtest fails with zstd compressed kernel modules

[Andrea Righi]

[Impact]

cryptsetup is using a custom script to create an initramfs and include kernel modules, however it is encoding *.ko and now that we have zstd compressed modules in the kernel it fails to include the proper modules in the initramfs (since the modules are now called *.ko.zst).

[Test case]

Run cryptsetup autopkgtest.

[Fix]

Workaround this issue by unpacking all modules in a temporary extract directory, so that debian/tests/utils/mkinitramfs can support either compressed and uncompressed modules.

[Regression potential]

This change fixes the autopkgtest test case, it doesn't touch cryptsetup at all, so the only regressions that we can experience are in the autopkgtest.

[Andrea Righi (arighi)]

debdiff in attach allows to support kernels either with zstd compressed kernel modules or uncompressed modules when running the autopkgtest test case.

[Ubuntu Foundations Team Bug Bot (crichton)]

The attachment "cryptsetup-support-zstd-kernel-modules.debdiff" seems to be a debdiff. The ubuntu-sponsors team has been subscribed to the bug report so that they can review and hopefully sponsor the debdiff. If the attachment isn't a patch, please remove the "patch" flag from the attachment, remove the "patch" tag, and if you are member of the ~ubuntu-sponsors, unsubscribe the team.

[This is an automated message performed by a Launchpad user owned by ~brian-murray, for any issue please contact him.]

[Paride Legovini (paride)]

Sponsored by xnox already. Removing ubuntu-sponsors subscription.

[TJ (tj)]

This also affects LTS releases with HWE, and/or locally built kernels. I hit it today building v6.8.0 with CONFIG_MODULES_COMPRESS_XZ