@frayoshi Might be syncthing with the bug too. Report it to your distro bug system is what I'd do and use your previous kernel or a different one. I noticed an update to syncthing recently, don't know if that is relevant to your issue though. Cheers.
Hmm.. not sure @marathon0 .. it was probably just there.. there are many logs about syncthing... Any way, for the moment I have upgraded, last time was like a month ago.. let's see if that happens again :)
At the moment I would not know how to reproduce in order to generate an useful bug report...