r0 = epoll_create(0x2b)
r1 = epoll_create(0x8001)
epoll_ctl$EPOLL_CTL_ADD(r1, 0x1, r0, &(0x7f0000000000))
r2 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./cgroup.net/cgroup.procs\x00', 0x0, 0x0)
epoll_ctl$EPOLL_CTL_ADD(r1, 0x1, r2, &(0x7f00000000c0))
r3 = openat$vcsu(0xffffffffffffff9c, &(0x7f0000000040), 0x0, 0x0)
epoll_ctl$EPOLL_CTL_ADD(r1, 0x1, r3, &(0x7f0000000080))