r0 = epoll_create(0x8002)
r1 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
epoll_ctl$EPOLL_CTL_ADD(r0, 0x1, r1, &(0x7f00000000c0))
r2 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./cgroup.net/cgroup.procs\x00', 0x0, 0x0)
dup3(r2, r0, 0x0)