Re: [PATCH 1/3] ipc: convert ipc_namespace.count from atomic_t to refcount_t

[Manfred Spraul]

On 05/27/2017 09:41 PM, Kees Cook wrote:
> On Mon, Feb 20, 2017 at 3:29 AM, Elena Reshetova
> <elena.reshetova@xxxxxxxxx> wrote:
> > refcount_t type and corresponding API should be
> > used instead of atomic_t when the variable is used as
> > a reference counter. This allows to avoid accidental
> > refcounter overflows that might lead to use-after-free
> > situations.
> >
> > Signed-off-by: Elena Reshetova <elena.reshetova@xxxxxxxxx>
> > Signed-off-by: Hans Liljestrand <ishkamiel@xxxxxxxxx>
> > Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>
> > Signed-off-by: David Windsor <dwindsor@xxxxxxxxx>
> Manfred, is this okay by you? I think this should go via -mm...
The patch is ok, the refcounters are not in the critical path.
I'll try to test the patches and then I would send an 'Acked-by', but 
this will take some days.

--
    Manfred