r0 = epoll_create(0x6)
r1 = openat$ttyS3(0xffffffffffffff9c, &(0x7f0000000040), 0x0, 0x0)
epoll_ctl$EPOLL_CTL_ADD(r0, 0x1, r1, &(0x7f0000000080))
ioctl$TIOCSTI(r1, 0x5437, 0x0)