You may use apport (apport-cli / apport-bug) and upload any data to this launchpad bug. https://help.ubuntu.com/lts/serverguide/reporting-bugs.html.en
Alternatively you can do an (anonymous) ftp upload of very huge files here: archive.admin.canonical.com -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1797367 Title: Ubuntu 18.04.1 - [s390x] Kernel panic while stressing network bonding To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1797367/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs