Re: [PATCH 2/3] posix_timer: fix error path in timer_create

From: Thomas Gleixner
Date: Thu May 20 2010 - 16:50:50 EST

On Thu, 20 May 2010, Andrew Morton wrote:

> On Mon, 17 May 2010 21:18:07 +0400
> Andrey Vagin <avagin@xxxxxxxxxx> wrote:
> > move CLOCK_DISPATCH(which_clock, timer_create, (new_timer)) after all
> > posible EFAULT erros.
> >
> > *_timer_create may allocate/get resources.
> > (for example posix_cpu_timer_create does get_task_struct)
> >
> You've added a Cc:stable@xxxxxxxxxx to the mail headers, but there is
> no "Cc: <stable@xxxxxxxxxx>" in the changelog. Please, if you think a
> patch should go into -stable then add the tag to the changelog also -
> this is more reliable and explicit than spraying things at a mailing
> list.
> You cc'ed stable@xxxxxxxxxx on all three patches but IMO only [2/3]
> (this patch) is needed in -stable.
> And afaict, the bug which this patch fixes will allow a suitably-nasty
> unprivileged application to leak an unbounded number of task-structs,
> which is a box-killing local DoS. So yes, -stable wants this.

I'm adding it to 2/3 only. Have that lot queued up already.



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