Re: [PATCH 0/2] (Was: perf_event_mmap(vma) && !vma->vm_mm)

[Oleg Nesterov]

On 10/16, Peter Zijlstra wrote:
>
> On Wed, Oct 16, 2013 at 10:43:48PM +0200, Oleg Nesterov wrote:
> > Yes, we can copy the garbage to the userspace. So what? This should not
> > matter at all. Exactly because userspace should never used the data after
> > the end of string, no?
>
> Security people tell me to _never_ leak anything. I'm not near creative
> enough to exploit such a thing; but I am amazed at the techniques I do
> read about at times. So its really a better safe than sorry thing.

OK.

Still we can cleanup/simplify this. see the next email...

Oleg.

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