I was able to verify that deleting ftrace/test.d/kprobe/multiple_kprobes.tc allows the remaining ftrace selftests (from the cosmic kernel tree) to pass. That suggests that the "Register/unregister many kprobe events" (multiple_kprobes.tc) test is the test that puts the system into a bad state.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1826385 Title: ftrace in ubuntu_kernel_selftests hang with Cosmic kernel To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/1826385/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs