Re: [PATCH 1/3] kthread: implement probe_kthread_data()

[Tejun Heo]

Hello, Oleg.

On Sat, Mar 30, 2013 at 7:36 AM, Oleg Nesterov <oleg@xxxxxxxxxx> wrote:
> > +void *probe_kthread_data(struct task_struct *task)
> > +{
> > +     struct kthread *kthread = to_kthread(task);
> > +     void *data = NULL;
> > +
> > +     probe_kernel_read(&data, &kthread->data, sizeof(data));
> > +     return data;
> > +}
>
> OK, but we can simply check ->vfork_done != NULL ?

Hmm... what if ->vfork_done is pointing to some weird place?

Thanks.

--
tejun
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