remote cover enable write trace failed (errno 17) remote cover enable write trace failed (errno 17) remote cover enable write trace failed (errno 17) remote cover enable write trace failed (errno 17) remote cover enable write trace failed (errno 17) SYZFAIL: repeatedly failed to execute the program proc=1 req=1649 state=1 status=1 (errno 9: Bad file descriptor) serialport: VM disconnected.