On Wed, 16 Apr 2008, Robin Holt wrote:

> On Wed, Apr 16, 2008 at 11:35:38AM -0700, Christoph Lameter wrote:
> > On Wed, 16 Apr 2008, Robin Holt wrote:
> > 
> > > I don't think this lock mechanism is completely working.  I have
> > > gotten a few failures trying to dereference 0x100100 which appears to
> > > be LIST_POISON1.
> > 
> > How does xpmem unregistering of notifiers work?
> 
> For the tests I have been running, we are waiting for the release
> callout as part of exit.

Some more details on the failure may be useful. AFAICT list_del[_rcu] is 
the culprit here and that is only used on release or unregister.



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