r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000040), 0x0, 0x0)
ioctl$TIOCPKT(r0, 0x5420, &(0x7f0000000000)=0x5c3)
ioctl$TIOCPKT(r0, 0x5420, &(0x7f0000000080)=0x1000)