Hello Christian, Do you have some example user-space code somewhere that illustrates calling clone3(). I'm looking at how we might document that system call in the manual page, and some example code to play with would be useful at this point. (I already have a simple working test program, but probably you have something better.) Thanks, Michael -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Linux/UNIX System Programming Training: http://man7.org/training/