Tails Installer should not break emergency shutdown

sajolida reports:

• it seems to happen after using the liveusb-creator
• it happened on both Tails 0.10.1 and Tails experimental
• sometimes it happens while doing:
  • boot Tails experimental on a isohybrid
  • "Clone Tails" onto another stick
  • unplug the running Tails
• sometimes the screen turns black with a cursor on the top-left corner and nothing else
• sometimes the screen stays the same, the system is still somehow responsive but doesn’t shutdown
• once I couldn’t even shutdown with the red button or by doing sudo halt in a terminal once I reached this weird state
• once I checked and udev-watchdog was still running on the right device but the emergency shutdown still didn’t work

intrigeri confirms: On VT1, when unplugging my boot USB stick, I see various lines about sdb3, sdb2 and sdb1 being removed, followed by "Bus error". Nothing more happens, and the udev watchdog process is not there anymore.

research

Feature Branch: bugfix/12354-drop-kexec-memory-wipe

Related issues

• Related to #7194 (closed)

Original created by @tails on 5677 (Redmine)