Re: Interesting race condition...

[Marc Ballarin <Ballarin.Marc@gmx.de>]

On Wed, 28 Jul 2004 01:05:46 -0700
Paul Jackson <pj@sgi.com> wrote:

> Rob wrote:
> > I just saw a funky thing.  Here's the cut and past from the xterm...
> 
> Can you reproduce this by cat'ing /proc/<pid>/cmdline?  Can you get a
> dump of the proc cmdline file to leak the environment sometimes?
> 
> It is this file that 'ps' is dumping for these options.  Adding the
> 'e' option would also dump the /proc/<pid>/environ file (if readable).
> 
> But you aren't adding 'e', so presumably the environment is "leaking"
> into the the cmdline file.
> 
> I suspect a kernel bug here - the ps code seems rather obvious and
> unimpeachable.
> 

I ran the following loop for a while (> 9 million times) and could not
reproduce the bug, but that might just be coincidence.
Conditions were the same as in my other, succesful test.

while [ 1 ];do
        cat /proc/self/cmdline >> TEST
done

Marc