I've recently noticed this message in my early dmesg boot: [ 1.594636] v86d[160]: segfault at 7ffd29b9f3e0 ip 00007f66ca1f6e64 sp 00007ffc29bb02f8 error 4 in libc.so.6[7f66ca175000+19f000] I'm honestly not sure when it started happening though. The system doesn't seem to be otherwise affected, AFAICS.