r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f00000002c0), 0x0, 0x0)
ioctl$TIOCPKT(r0, 0x5420, &(0x7f0000000040)=0x1f)
readv(r0, &(0x7f00000015c0)=[{&(0x7f0000000180)=""/136, 0x88}], 0x1)
ioctl$TIOCSTI(r0, 0x5412, &(0x7f0000000080))