Backport dwarves 1.25

[Dimitri John Ledkov]

[Impact]

To continue having BTF enabled in Linux HWE kernels an update to dwarves is required.

v6.3+ kernels require dwarves v1.25 or better.

This bug report is similar to a previous such backport https://bugs.launchpad.net/ubuntu/+source/dwarves-dfsg/+bug/1912811

Similar to before, to minimise changes, dwarves will be built with vendored and statically linked libbpf on releases that have older libbpf (jammy & kinetic). Lunar & Mantic use shared linked libbpf as the one in the archive is the same version as vendored one.

[Test Case]

* Rebuild given series GA kernel
* On Jammy, rebuild GA, HWE, and Mantic kernels

[Where problems could occur]

Currently in jammy-lunar we ship cherry-pick from development pre-release 1.25 to address new BTF types. The upstream approach since this cherry-pick has changed to a more conservative one. This backport will align Ubuntu BTF with now released versions of BTF.

Currently in lunar we have a BTF bug which leads to generating duplicate BTF information. This backport will address it. See https://bugs.launchpad.net/ubuntu/lunar/+source/dwarves/+bug/2025370

[Steve Langasek (vorlon)]

Hello Dimitri, or anyone else affected,

Accepted dwarves into lunar-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/dwarves/1.25-0ubuntu1~23.04.1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, what testing has been performed on the package and change the tag from verification-needed-lunar to verification-done-lunar. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-lunar. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

[Steve Langasek (vorlon)]

Hello Dimitri, or anyone else affected,

Accepted dwarves into kinetic-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/dwarves/1.25-0ubuntu1~22.10.1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, what testing has been performed on the package and change the tag from verification-needed-kinetic to verification-done-kinetic. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-kinetic. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

[Steve Langasek (vorlon)]

Hello Dimitri, or anyone else affected,

Accepted dwarves into jammy-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/dwarves/1.25-0ubuntu1~22.04.1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, what testing has been performed on the package and change the tag from verification-needed-jammy to verification-done-jammy. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-jammy. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

[Ubuntu SRU Bot (ubuntu-sru-bot)]

All autopkgtests for the newly accepted dwarves (1.25-0ubuntu1~22.10.1) for kinetic have finished running.
The following regressions have been reported in tests triggered by the package:

dwarves/1.25-0ubuntu1~22.10.1 (amd64, arm64, armhf, ppc64el, s390x)

Please visit the excuses page listed below and investigate the failures, proceeding afterwards as per the StableReleaseUpdates policy regarding autopkgtest regressions [1].

https://people.canonical.com/~ubuntu-archive/proposed-migration/kinetic/update_excuses.html#dwarves

[1] https://wiki.ubuntu.com/StableReleaseUpdates#Autopkgtest_Regressions

Thank you!

[Ubuntu SRU Bot (ubuntu-sru-bot)]

All autopkgtests for the newly accepted dwarves (1.25-0ubuntu1~22.04.1) for jammy have finished running.
The following regressions have been reported in tests triggered by the package:

dwarves/1.25-0ubuntu1~22.04.1 (amd64, arm64, armhf, ppc64el, s390x)

Please visit the excuses page listed below and investigate the failures, proceeding afterwards as per the StableReleaseUpdates policy regarding autopkgtest regressions [1].

https://people.canonical.com/~ubuntu-archive/proposed-migration/jammy/update_excuses.html#dwarves

[1] https://wiki.ubuntu.com/StableReleaseUpdates#Autopkgtest_Regressions

Thank you!

[Dimitri John Ledkov (xnox)]

Builds are successful with

https://launchpad.net/~xnox/+archive/ubuntu/dwarves-1.25

lunar
linux 6.2.0-24.24 dwarves 1.25-0ubuntu1~23.04.1 on all arches

kinetic
linux 5.19.0-46.47 dwarves 1.25-0ubuntu1~23.04.1 on all arches

jammy
linux 5.15.0-76.83 dwarves 1.25-0ubuntu1~22.04.1 on all arches
linux-hwe-5.19 5.19.0-46.47~22.04.1 dwarves 1.25-0ubuntu1~22.04.1 on all arches
linux-hwe-6.2 6.2.0-25.25~22.04.3 dwarves 1.25-0ubuntu1~22.04.1 on all arches

Note, as expected config needed tweaks with new dwarves for hwe-6.2 as it already desires to use new features, for the rebuild test, simply disabled them anyway.

https://launchpad.net/~xnox/+archive/ubuntu/dwarves-1.25.-2
jammy
linux - 6.3.0-7.7 dwarves 1.25-0ubuntu1~22.04.1 on all arches => direct rebuild from mantic on all arches, including exercising the new dwarves features for rust.

Confirming that this update resolves the bug in lunar w.r.t. duplicate BTF on arm64:

before
Package: linux-image-unsigned-6.2.0-24-generic-64k
Installed-Size: 20322

after
Package: linux-image-unsigned-6.2.0-24-generic-64k
Installed-Size: 16449

20% reduction, attributed to dwarves change of BTF.

[Dimitri John Ledkov (xnox)]

Uploaded .2 versions of dwarves for jammy & kinetic to address autopkgtest failing to satisfy deps when pahole is using vendored libbtf.

[Steve Langasek (vorlon)]

Hello Dimitri, or anyone else affected,

Accepted dwarves into kinetic-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/dwarves/1.25-0ubuntu1~22.10.2 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, what testing has been performed on the package and change the tag from verification-needed-kinetic to verification-done-kinetic. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-kinetic. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

[Steve Langasek (vorlon)]

Hello Dimitri, or anyone else affected,

Accepted dwarves into jammy-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/dwarves/1.25-0ubuntu1~22.04.2 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, what testing has been performed on the package and change the tag from verification-needed-jammy to verification-done-jammy. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-jammy. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

[Andreas Hasenack (ahasenack)]

Kinetic is EOL

[Andreas Hasenack (ahasenack)]

I was worried that something like https://bugs.launchpad.net/ubuntu/+source/dwarves-dfsg/+bug/1951438 could be reintroduced, but I tried a libvirt build on lunar and it worked just fine. No build-dep even pulled in dwarves, but I installed it from proposed anyway just to be sure. Tests also ran.

[Andreas Hasenack (ahasenack)]

The verification of the Stable Release Update for dwarves has completed successfully and the package is now being released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.

[Launchpad Janitor (janitor)]

This bug was fixed in the package dwarves - 1.25-0ubuntu1~23.04.1

---------------
dwarves (1.25-0ubuntu1~23.04.1) lunar; urgency=medium

  * Backport 1.25 dwarves to stable series (LP: #2025988)

 -- Dimitri John Ledkov <email address hidden> Wed, 05 Jul 2023 09:46:31 +0100

[Dimitri John Ledkov (xnox)]

autopkgtests passed, and the dwarves build otherwise has the same code.

marking 1.25-0ubuntu1~22.04.2 as passed verification testing for jammy, after the update for autopkgtest failure.

[Launchpad Janitor (janitor)]

This bug was fixed in the package dwarves - 1.25-0ubuntu1~22.04.2

---------------
dwarves (1.25-0ubuntu1~22.04.2) jammy; urgency=medium

  * Backport 1.25 dwarves to stable series (LP: #2025988)
    - Use statically linked vendored libbpf
    - Relax autopkgtest libbpf-dev depends

 -- Dimitri John Ledkov <email address hidden> Wed, 05 Jul 2023 09:46:31 +0100