Note: I have the same issue with the 4.9 kernel from stable, which I have just installed, so that initrd.img-4.9.0-8-amd64 is recent (this might matter).
See also bug 917607 (I get the same error), reported against udev. -- Vincent Lefèvre <vinc...@vinc17.net> - Web: <https://www.vinc17.net/> 100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/> Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)
