r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
ioctl$TIOCSPTLCK(r0, 0x5420, &(0x7f0000000040)=0x1)
ioctl$TCSETSF(r0, 0x5404, &(0x7f0000000140)={0x0, 0x0, 0x0, 0x10001, 0x0, "361068eb0000001e0800"})