r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f00000002c0), 0x0, 0x0)
ioctl$TIOCVHANGUP(r0, 0x5437, 0x0)
readv(r0, &(0x7f0000000200)=[{&(0x7f00000000c0)=""/125, 0x7d}], 0x1)