From: Cyrill Gorcunov <gorcunov@gmail.com>
To: Andy Lutomirski <luto@amacapital.net>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Sasha Levin <sasha.levin@oracle.com>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
Dave Jones <davej@redhat.com>,
LKML <linux-kernel@vger.kernel.org>,
Pavel Emelyanov <xemul@parallels.com>
Subject: Re: mm: NULL ptr deref handling mmaping of special mappings
Date: Fri, 16 May 2014 01:57:22 +0400 [thread overview]
Message-ID: <20140515215722.GU28328@moon> (raw)
In-Reply-To: <CALCETrXe80dx+ODPF1o2iUMOEOO_JAdev4f9gOQ4SUj4JQv36Q@mail.gmail.com>
On Thu, May 15, 2014 at 02:42:48PM -0700, Andy Lutomirski wrote:
> >
> > Looking forward the question appear -- will VDSO_PREV_PAGES and rest of variables
> > be kind of immutable constants? If yes, we could calculate where the additional
> > vma lives without requiring any kind of [vdso] mark in proc/pid/maps output.
>
> Please don't!
>
> These might, in principle, even vary between tasks on the same system.
> Certainly the relative positions of the vmas will be different
> between 3.15 and 3.16, since we need almost my entire cleanup series
> to reliably put them into their 3.16 location. And I intend to change
> the number of pages in 3.16 or 3.17.
There are other ways how to find where additional pages are laying but it
would be great if there a straightforward interface for that (ie some mark
in /proc/pid/maps output).
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next prev parent reply other threads:[~2014-05-15 21:57 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-14 15:55 mm: NULL ptr deref handling mmaping of special mappings Sasha Levin
2014-05-14 20:23 ` Andrew Morton
2014-05-14 20:41 ` Sasha Levin
2014-05-14 21:03 ` Andrew Morton
2014-05-14 21:11 ` Sasha Levin
2014-05-14 21:31 ` Andrew Morton
2014-05-14 21:33 ` Andy Lutomirski
2014-05-14 22:11 ` Cyrill Gorcunov
2014-05-14 22:23 ` Andy Lutomirski
2014-05-15 2:36 ` Pavel Emelyanov
2014-05-15 19:42 ` Andy Lutomirski
2014-05-19 8:27 ` Pavel Emelyanov
2014-05-19 8:40 ` Cyrill Gorcunov
2014-05-15 8:45 ` Cyrill Gorcunov
2014-05-15 19:46 ` Andy Lutomirski
2014-05-15 19:53 ` Cyrill Gorcunov
2014-05-15 19:59 ` Andy Lutomirski
2014-05-15 20:19 ` Cyrill Gorcunov
2014-05-15 21:31 ` Cyrill Gorcunov
2014-05-15 21:42 ` Andy Lutomirski
2014-05-15 21:57 ` Cyrill Gorcunov [this message]
2014-05-15 22:15 ` Andy Lutomirski
2014-05-16 22:40 ` Andy Lutomirski
2014-05-16 22:56 ` H. Peter Anvin
2014-05-16 23:10 ` Andy Lutomirski
2014-05-17 6:15 ` Cyrill Gorcunov
2014-05-14 22:51 ` Andy Lutomirski
2014-05-14 21:26 ` Andy Lutomirski
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