r0 = syz_open_dev$tty20(0xc, 0x4, 0x1)
r1 = syz_open_dev$tty20(0xc, 0x4, 0x1)
ioctl$TIOCSTI(r1, 0x5412, &(0x7f0000000040)=0x13)
ioctl$TCXONC(r0, 0x540a, 0x0)