r0 = epoll_create1(0x0)
r1 = epoll_create(0x6)
epoll_ctl$EPOLL_CTL_ADD(r0, 0x1, r1, &(0x7f0000000080))
epoll_ctl$EPOLL_CTL_ADD(r1, 0x1, r0, &(0x7f0000000200))