note, as visible in the dmesg log, IO attempts with another unrelated USB device (the USB stick ubuntu had previously booted from) failed, causing IO errors, as the entire USB subsystem was down.
this is also why I had to submit this bug with "ubuntu-bug" prior to actually causing the bug and upload the dmesg.log later, since ubuntu- bug would no longer be able to work after the OOPS happened. like with Ubuntu 18 this bug has the potential to cause data loss, make the system unstable, and a hard reboot is required to recover -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1905994 Title: failure to set dtr/rts on USB VCP causes kernel page fault To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1905994/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
