https://bugs.freedesktop.org/show_bug.cgi?id=93460
--- Comment #5 from Christian König deathsimple@vodafone.de --- (In reply to Mike Lothian from comment #4)
When this happens my machine just freezes, the only way to continue is to press and hold the power button but that doesn't cleanly unmount the disks
Yeah, that is clearly a bug when the driver unloads.
Probably rather hard to reproduce, we should add a test case which loads and unloads the driver multiple times while there is load.