Public bug reported: containerd is failing its autopkgtest on all architectures:
https://autopkgtest.ubuntu.com/results/autopkgtest- questing/questing/ppc64el/c/containerd-app/20250720_134304_4ee75@/log.gz This seems to be quite similar to LP: #2105839 and probably has the same root cause, but that is riscv64 only, whereas this failure seems to be afflicting all architectures and the logs are not exact. From what I can tell from the log output, the basic-smoke autopkgtest for containerd-app is failing on all architectures due to a race condition attempting to use the ctr client before the containerd daemon has finished starting. I suspect that depending on the performance of the test architecture, the failure manifests in one of two ways: * On slower architectures (e.g., riscv64), the client times out trying to connect to the daemon socket. This is documented in bug #2105839. * On faster architectures (e.g., ppc64el), the client fails immediately with a "no such file or directory" error because the socket has not yet been created. [Root Cause] The flaw is in the debian/tests/basic-smoke script. It executes the following commands in sequence: ... containerd & ctr images pull docker.io/library/busybox:latest ... Holy race condition batman! So, containerd's started as a background process without any wait logic. ctr executes and may fail because the daemon's socket at /run/containerd/containerd.sock is not yet available. [Suggested Fix] The test script should be modified to poll for the existence of the /run/containerd/containerd.sock file in a loop after starting the containerd & process. The script should only proceed with the ctr commands once the socket is confirmed to be present. ** Affects: containerd-app (Ubuntu) Importance: Undecided Status: New ** Patch added: "Suggested implementation of a wait" https://bugs.launchpad.net/bugs/2118738/+attachment/5892959/+files/0001-basic-smoke-Poll-server-before-trying-to-run-test-cl.patch -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2118738 Title: containerd-app autopkgtest fails on all architectures because it does not wait for the daemon to start To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/containerd-app/+bug/2118738/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
