r0 = syz_open_dev$tty20(0xc, 0x4, 0x1)
stat(&(0x7f0000001440)='.\x00', &(0x7f0000001480)={0x0, 0x0, 0x0, 0x0, <r1=>0x0})
setreuid(0xffffffffffffffff, r1)
ioctl$TIOCSTI(r0, 0x5412, 0x0)