r0 = syz_open_dev$tty20(0xc, 0x4, 0x0)
readv(r0, &(0x7f0000000200)=[{&(0x7f0000000180)=""/85, 0x55}], 0x1)
ioctl$TIOCSETD(r0, 0x5423, &(0x7f0000000000))