<!DOCTYPE html> <html> <head> <title></title> </head> <body><div>On Sun, Jan 10, 2016, at 02:01 AM, Robert O'Callahan wrote:<br></div> <blockquote type="cite"><div dir="ltr"><div><div><blockquote style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204, 204, 204);padding-left:1ex;"><div> </div> </blockquote></div> </div> <div>Thanks. Unfortunately prctl(PR_SET_DUMPABLE, 0) makes it impossible to PTRACE_ATTACH to such a process, which rr needs to run its tests. (rr is a debugger.). It also changes the owner of most files/dirs under /proc/<pid> to root, which breaks various other things rr needs.<br></div> </div> </blockquote><div> </div> <div>I'm not aware of a way to do what you need now, but I think the right fix in the<br></div> <div>kernel would be something like per-cgroup core patterns, combined with<br></div> <div>the unified hierarchy so we can have unprivileged cgroup changes.<br></div> <div> </div> </body> </html>