What to do if USB stack seems dead

[Maxim V FIlimonov]

Lately, I've been heavily experimenting with different USB devices (for 
instance, USB to TTL one, but that's another story), and at a moment I 
encountered that the system doesn't react on new USB devices connected. The 
connected devices work fine, though. The question is: what can I do in such a 
case if I don't want to reboot my box? 
-- 
wbr, Maxim Filimonov
che at bein.link