Public bug reported: The to-be-introduced 4.13 based kernel fails the kubernetes test suite (https://k8s-gubernator.appspot.com/build/kubernetes-jenkins/logs/ci- kubernetes-e2e-gce-ubuntudev2-k8sbeta-default/15?log#log)
After rough bisecting (using kernels from http://kernel.ubuntu.com /~kernel-ppa/mainline/ ), it seems some kernel change introduced in 4.11 breaks those tests (4.10 is good, 4.11+ are bad. 4.11-rc* are bad). The minimal reproducer (doesn't have to be on a cloud image - my bionic desktop reproduces it just as well): sudo apt install docker.io sudo docker run -d gcr.io/kubernetes-e2e-test-images/hostexec-amd64:1.0 (note down returned hash) sudo docker exec -it (first few chars of returned hash) /bin/sh # (Inside the docker prompt) timeout -t 1 cat On kernels exhibiting the problem, the "timeout/cat" command above will terminate the container. On kernels exhibiting the problem, docker logs exhibits: # sudo docker logs (first few chars of returned hash) /bin/sh: can't open /fifo: Interrupted system call Kernels that do not exhibit the problem will not terminate after the "timeout" command and return to a normal command prompt. ** Affects: linux-gke (Ubuntu) Importance: High Assignee: Joseph Salisbury (jsalisbury) Status: In Progress ** Tags: performing-bisect -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1741887 Title: Kubernetes test suite fails on mainline kernel 4.11+ To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-gke/+bug/1741887/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
