Emulated qemu builds with Mock fail inside GitHub Action

[junghans]

I have a simple Git hub Action (https://github.com/junghans/libcerf.spec/blob/rawhide/.github/workflows/continuous-integration-workflow.yml)

name: CI
on:
  push:
    branches:
      - rawhide

jobs:
  CI:
    runs-on: ubuntu-latest
    container:
      image: registry.fedoraproject.org/fedora:rawhide
      options: --privileged
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
      - name: Install fedpkg
        run: dnf -y install fedpkg
      - name: Download source
        run: spectool -g libcerf.spec
      - name: Build rpm
        run: fedpkg mockbuild --mock-config /etc/mock/fedora-rawhide-s390x.cfg

but it fails with Error: call to ldconfig failed.?
(see https://github.com/junghans/libcerf.spec/actions/runs/14540748543/job/40798073135)

Any ideas how to fix that?

[junghans]

I played around with this some more in https://github.com/junghans/libcerf.spec/actions/runs/14541482367/job/40800198629, and it fails for all non-native builds.

[junghans]

Reproducer in #1571

[praiskup]

This is weird. I can not reproduce this locally on Fedora (with a rootless rawhide Podman container driving mock). Is this because there's some host kernel (ubuntu?) incompatibility with the qemu-user-static that we have to install into the docker container?

[junghans]

I have no good idea.

[praiskup]

Do you think running Podman would make any difference? https://fedoramagazine.org/github-actions-use-podman-to-run-fedora-linux/