r0 = openat$ttyS3(0xffffffffffffff9c, 0x0, 0x0, 0x0)
ioctl$TIOCVHANGUP(r0, 0x5437, 0x0)
openat$ttyS3(0xffffffffffffff9c, &(0x7f0000001980), 0x4802, 0x0)