HcDoneHead not written back; disabled
HC died; cleaning up
Then it's unlikely to be the same bug. This one has been fixed anyway. If you have a particular USB device that disconnects, it's likely to be either a hardware problem (check it on a different OS), or a problem with the USB driver for that device (maybe it's not supported at all). If you think it's a bug, raise a new issue for it and mention the exact device model in the subject.
If you don't see specific messages like:
HcDoneHead not written back; disabled
HC died; cleaning up
Then it's unlikely to be the same bug. This one has been fixed anyway. If you have a particular USB device that disconnects, it's likely to be either a hardware problem (check it on a different OS), or a problem with the USB driver for that device (maybe it's not supported at all). If you think it's a bug, raise a new issue for it and mention the exact device model in the subject.