this is easily reproducible and triggers at least a DoS on a freshly installed 17.04 system, from within an unprivileged LXD container. see the transcript for the executed commands, and journal-1 and journal-2 for the first and second kernel traces (caused by the second to last and last "tc" commands executed in the container).
the end result is a complete hang/crash of the system. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1682368 Title: refcount underflow / kernel NULL dereference after attempting to add basic tc filter To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1682368/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
