r0 = syz_open_dev$tty20(0xc, 0x4, 0x1)
stat(&(0x7f0000001cc0)='.\x00', &(0x7f0000001c00)={0x0, 0x0, 0x0, 0x0, <r1=>0x0})
setuid(r1)
ioctl$TIOCSLCKTRMIOS(r0, 0x4b4b, 0xfffffffffffffffc)