> Can we just double-check the refcounting please?
>
> > index 4fefbad..8d2672d 100644
> > --- a/ipc/shm.c
> > +++ b/ipc/shm.c
> > @@ -254,8 +254,10 @@ struct mempolicy *shm_get_policy(struct vm_area_struct *vma, unsigned long addr)
> >
> > if (sfd->vm_ops->get_policy)
> > pol = sfd->vm_ops->get_policy(vma, addr);
>
> afacit this takes a ref on the underlying policy
>
> > - else
> > + else if (vma->vm_policy)
> > pol = vma->vm_policy;
> > + else
> > + pol = current->mempolicy;
>
> but these two do not.
>
> > return pol;
> > }
> > #endif
>
> Is is all correct?
No it looks broken.
-Andi
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