[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.10.16' (ECDSA) to the list of known hosts. 2021/10/13 18:56:08 fuzzer started 2021/10/13 18:56:09 dialing manager at 10.128.0.169:43823 2021/10/13 18:56:09 checking machine... 2021/10/13 18:56:09 checking revisions... 2021/10/13 18:56:09 testing simple program... 2021/10/13 18:56:09 Manager.Check call failed: machine check failed: host setup failed: failed to run ["./syz-executor" "setup" "fault" "binfmt_misc" "usb" "802154"]: exit status 67 write(cgroup.subtree_control, +cpu) failed: 2 write(cgroup.subtree_control, +memory) failed: 2 write(cgroup.subtree_control, +io) failed: 2 write(cgroup.subtree_control, +pids) failed: 2 write(cgroup.subtree_control, +rdma) failed: 2 mount(/syzcgroup/net, net) failed: 22 mount(/syzcgroup/net, net_cls) failed: 16 mount(/syzcgroup/net, net_prio) failed: 16 SYZFAIL: mount cgroup failed (/syzcgroup/net, devices,blkio,freezer): 16 (errno 16: Device or resource busy) syzkaller login: [ 72.174751][ T6544] cgroup: Unknown subsys name 'net'