title: does prctl(pr_set_dumpable, 1) has visible side effects?
body: <p>I used <code>prctl(pr_set_dumpable, 1)</code> after <code>setuid()</code> call to have the coredumps generation enabled.
  I found that use of <code>prctl(pr_set_dumpable, 1)</code> also changes the owner:group of all the files at <code>/proc/(pid)</code> location, is this a side affect or expected?</p>