r0 = creat(&(0x7f0000000080)='./cgroup/cgroup.procs\x00', 0x0)
r1 = epoll_create1(0x0)
epoll_ctl$EPOLL_CTL_ADD(r1, 0x1, r0, &(0x7f00000000c0))
r2 = openat$tun(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
epoll_ctl$EPOLL_CTL_ADD(r1, 0x1, r2, &(0x7f0000000080))
r3 = epoll_create(0x20001)
epoll_ctl$EPOLL_CTL_ADD(r3, 0x1, r1, &(0x7f0000000200))