The recent Ubuntu 15.04 kernel update to vmlinuz-3.19.0-37-generic installed this same bug. I had to reboot back to vmlinuz-3.19.0-33-generic to avoid the loop.
The recent Ubuntu 15.04 kernel update to vmlinuz- 3.19.0- 37-generic installed this same bug. 3.19.0- 33-generic to avoid the loop.
I had to reboot back to vmlinuz-