From: Oleg Nesterov <oleg@redhat.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@kernel.org>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 0/2] (Was: perf_event_mmap(vma) && !vma->vm_mm)
Date: Wed, 16 Oct 2013 22:55:31 +0200 [thread overview]
Message-ID: <20131016205531.GA26066@redhat.com> (raw)
In-Reply-To: <20131016205559.GF10651@twins.programming.kicks-ass.net>
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.
next prev parent reply other threads:[~2013-10-16 21:02 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-12 19:22 perf_event_mmap(vma) && !vma->vm_mm Oleg Nesterov
2013-10-14 10:24 ` Peter Zijlstra
2013-10-16 20:09 ` [PATCH 0/2] (Was: perf_event_mmap(vma) && !vma->vm_mm) Oleg Nesterov
2013-10-16 20:09 ` [PATCH 1/2] perf: Kill the dead !vma->vm_mm code in perf_event_mmap_event() Oleg Nesterov
2013-10-29 14:08 ` [tip:perf/core] perf: Kill the dead !vma-> vm_mm " tip-bot for Oleg Nesterov
2013-10-16 20:10 ` [PATCH 2/2] perf: Do not waste PAGE_SIZE bytes for ALIGN(8) " Oleg Nesterov
2013-10-29 14:08 ` [tip:perf/core] " tip-bot for Oleg Nesterov
2013-10-16 20:28 ` [PATCH 0/2] (Was: perf_event_mmap(vma) && !vma->vm_mm) Peter Zijlstra
2013-10-16 20:43 ` Oleg Nesterov
2013-10-16 20:55 ` Peter Zijlstra
2013-10-16 20:55 ` Oleg Nesterov [this message]
2013-10-16 20:58 ` Peter Zijlstra
2013-10-16 20:58 ` Oleg Nesterov
2013-10-16 21:16 ` Peter Zijlstra
2013-10-17 15:20 ` Oleg Nesterov
2013-10-17 15:27 ` Oleg Nesterov
2013-10-17 16:47 ` Peter Zijlstra
2013-10-17 18:24 ` Oleg Nesterov
2013-10-17 21:32 ` Peter Zijlstra
2013-11-06 13:19 ` [tip:perf/core] perf: Factor out strncpy() in perf_event_mmap_event() tip-bot for Oleg Nesterov
2013-10-17 16:38 ` [PATCH 0/2] (Was: perf_event_mmap(vma) && !vma->vm_mm) Peter Zijlstra
2013-10-17 15:22 ` [PATCH 3/2] perf: Optimize the fill/align code in perf_event_mmap_event() Oleg Nesterov
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