multip register_uprobe

[Jim Keniston]

On Fri, 2007-07-06 at 09:37 -0700, Jim Keniston wrote:
> On Fri, 2007-07-06 at 18:05 +0530, Srikar Dronamraju wrote:
> > Hi Wenji,
> > 
> > 
> > >   I am creating some test scripts based on sarikar's framework.
> > >  
> > >   There is one problem about register multiple times.
> > >       .................
> > >        probes->vaddr = vaddr;
> > >        probes->pid = pid;
> > >        probes->handler = handler;
> > >        for (i=0; i < 3; i++) {
> > >             ret = register_uprobe(probes);
> > >             if (ret!=0)  //of course, the first time should succeed and 
> > > will failed in second time, ret = -16
> > >               {
> > > I tried several possibilities:
...
> 
> > >                 * return 0; //RESULT: same as above
> The above approach should work, assuming your cleanup function
> unregisters the probe.
> 
> You have found a bug.  Thanks!  I will post a fix shortly.
> 

Attached are a patch with the fix and a module (wenji3x.c) that
demonstrates the bug (or fix).  This patch applies atop the May 26 (GMT)
uprobes patch set.

Thanks again.
Jim
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