2015-09-05 20:47 GMT+02:00 erik quanstrom <quans...@quanstro.net>: > > May be my problem is that p is global in my case? > > global variables are in the bss, and thus shared. p will have > the same value in each thread, but *p should point into the > stack, and thus the same virtual address will be mapped to > different physical pages of memory. > > however, if *p is assigned to a non-zero value before the process > is created, the new page allocated for the new process' stack will > have a copy of the old value, and thus not be 0. > > - erik > > That's exactly what happened. I misread privalloc(2), and assumed that privalloc()ed addresses were somehow reset on rfork. This is probably something to explicitly state the man page.
Thanks you all! Giacomo
