On Thu, Sep 11, 2014 at 07:23:45AM -0500, Chuck Ebbert wrote:
> On Wed, 10 Sep 2014 14:29:33 +0100
> Aaron Tomlin wrote:
>
> > On Wed, Sep 10, 2014 at 02:26:54AM -0500, Chuck Ebbert wrote:
> > > And has this been tested on parisc and metag, which use STACK_GROWSUP ?
> > > I can't see how end_of_s
On Wed, 10 Sep 2014 14:29:33 +0100
Aaron Tomlin wrote:
> On Wed, Sep 10, 2014 at 02:26:54AM -0500, Chuck Ebbert wrote:
> > And has this been tested on parisc and metag, which use STACK_GROWSUP ?
> > I can't see how end_of_stack() as it's defined now could work on those
> > archs.
>
> AFAIU, dup
On Wed, Sep 10, 2014 at 02:26:54AM -0500, Chuck Ebbert wrote:
> On Tue, 9 Sep 2014 10:42:27 +0100
> Aaron Tomlin wrote:
>
> > +void task_stack_end_magic(struct task_struct *tsk)
> > +{
> > + unsigned long *stackend;
> > +
> > + stackend = end_of_stack(tsk);
> > + *stackend = STACK_END_MAGI
On Tue, 9 Sep 2014 10:42:27 +0100
Aaron Tomlin wrote:
> +void task_stack_end_magic(struct task_struct *tsk)
> +{
> + unsigned long *stackend;
> +
> + stackend = end_of_stack(tsk);
> + *stackend = STACK_END_MAGIC;/* for overflow detection */
> +}
> +
For clarity this should proba
Tasks get their end of stack set to STACK_END_MAGIC with the
aim to catch stack overruns. Currently this feature does not
apply to init_task. This patch removes this restriction.
Note that a similar patch was posted by Prarit Bhargava [1]
some time ago but was never merged.
[1]: http://marc.info/
