[  OK  ] Started Getty on tty2.
[  OK  ] Started Getty on tty1.
[  OK  ] Started Serial Getty on ttyS0.
[  OK  ] Started getty on tty2-tty6 if dbus and logind are not available.
[  OK  ] Started OpenBSD Secure Shell server.

Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.0.251' (ECDSA) to the list of known hosts.
2021/10/12 19:31:01 fuzzer started
2021/10/12 19:31:01 connecting to host at 10.128.0.169:41279
2021/10/12 19:31:01 checking machine...
2021/10/12 19:31:01 checking revisions...
2021/10/12 19:31:01 testing simple program...
2021/10/12 19:31:01 BUG: host setup failed: failed to run ["./syz-executor" "setup" "fault" "usb"]: 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: [   73.117653][ T6535] cgroup: Unknown subsys name 'net'