I was able to reproduce the situation and did a kernel bisection to confirm, and it reveals that you were right :
$ git bisect log ... # first fixed commit: [d6379b5ba0f381ea8ec2403b9985100a946a5866] [kernel] dont collect some tracing instance files I test the above commit on Cosmic and sosreport no longer hangs at the kernel plugin when rasdaemon is installed. I'll push a the fix during the week-end or next week. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1775195 Title: [sync][sru]sosreport v3.6 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/sosreport/+bug/1775195/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs