r0 = epoll_create(0x6)
r1 = openat$ttyS3(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
r2 = dup2(r1, r1)
epoll_ctl$EPOLL_CTL_ADD(r0, 0x1, r2, &(0x7f0000000040))
ioctl$TIOCVHANGUP(r1, 0x5425, 0x0)