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=3 req=5522 state=1 status=1 (errno 9: Bad file descriptor) serialport: VM disconnected.