Public bug reported: pmtu.sh is a network selftest that was introduced on 4.17. It is currently failing on 4.18. After revert of ccd740cbc6 "vti6: Add pmtu handling to vti6_xmit.", it passes.
The fail is in the nature of holding netdevices refcounts, so some network operations start hanging, including the loading and removal of network modules. [ 159.936543] unregister_netdevice: waiting for veth_b to become free. Usage count = 1 ** Affects: linux (Ubuntu) Importance: Medium Assignee: Thadeu Lima de Souza Cascardo (cascardo) Status: Triaged ** Affects: linux (Ubuntu Cosmic) Importance: Medium Assignee: Thadeu Lima de Souza Cascardo (cascardo) Status: Triaged ** Also affects: linux (Ubuntu Cosmic) Importance: Undecided Status: New ** Changed in: linux (Ubuntu Cosmic) Assignee: (unassigned) => Thadeu Lima de Souza Cascardo (cascardo) ** Changed in: linux (Ubuntu Cosmic) Importance: Undecided => Medium ** Changed in: linux (Ubuntu Cosmic) Status: New => Triaged -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1789436 Title: pmtu.sh fails on 4.18 kernel To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1789436/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs