r0 = syz_open_dev$tty20(0xc, 0x4, 0x0) ioctl$TIOCSTI(r0, 0x5412, &(0x7f0000000000)=0x13) ppoll(&(0x7f00000000c0)=[{r0}], 0x1, &(0x7f0000000140)={0x0, 0x989680}, 0x0, 0x0)