r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
ioctl$TIOCSPTLCK(r0, 0x40045431, &(0x7f0000000000))
ioctl$TIOCPKT(r0, 0x5420, &(0x7f0000000040)=0x4c)
r1 = ioctl$TIOCGPTPEER(r0, 0x5441, 0x0)
ioctl$TCXONC(r1, 0x540b, 0x1)