From: Ingo Molnar <mingo@elte.hu>
To: Pavel Machek <pavel@ucw.cz>
Cc: Arjan van de Ven <arjan@infradead.org>,
Hugh Dickins <hugh@veritas.com>, Jiri Kosina <jkosina@suse.cz>,
kernel list <linux-kernel@vger.kernel.org>,
Abel Bernabeu <abel.bernabeu@gmail.com>
Subject: Re: brk randomization breaks columns
Date: Tue, 5 Feb 2008 17:06:20 +0100 [thread overview]
Message-ID: <20080205160620.GA28812@elte.hu> (raw)
In-Reply-To: <20080205155959.GC24331@elf.ucw.cz>
* Pavel Machek <pavel@ucw.cz> wrote:
> . Yes, setarch i386 -R /usr/local/bin/uemacs (etc) fixes them, too.
>
> What about this?
>
> Heap randomization breaks /lib/libc.so.5.4.33, make it possible to
> randomize normal stuff but leave the heap alone.
certainly looks fine to me, but please also add a .config to make it
default to 2. The reason is that a good portions of the overflows happen
on the heap and 99.9% of the Linux users do not run 1996-era glibc
anymore.
something like CONFIG_COMPAT_BRK=y, which would cause randomize_va_space
to default to 1, and if a user or distro disables it, it will default to
2.
Ingo
next prev parent reply other threads:[~2008-02-05 16:06 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-04 12:28 brk randomization breaks columns Pavel Machek
2008-02-04 13:01 ` Ingo Molnar
2008-02-04 13:28 ` Pavel Machek
2008-02-04 14:55 ` Jiri Kosina
2008-02-04 20:25 ` Pavel Machek
2008-02-04 14:33 ` Jiri Kosina
2008-02-04 16:12 ` Jiri Kosina
[not found] ` <15577be70802041016m97cddbfk43b9073408bcbce9@mail.gmail.com>
[not found] ` <15577be70802041029o2975ba6do34589bbdc81d1652@mail.gmail.com>
2008-02-04 19:52 ` Fwd: " Pavel Machek
2008-02-04 21:54 ` Abel Bernabeu
2008-02-04 22:48 ` Jiri Kosina
2008-02-04 23:13 ` Abel Bernabeu
2008-02-04 23:39 ` Pavel Machek
2008-02-04 20:31 ` Pavel Machek
2008-02-05 1:57 ` Jiri Kosina
2008-02-05 11:06 ` [regression] " Pavel Machek
2008-02-05 12:50 ` Jiri Kosina
2008-02-05 12:54 ` Ingo Molnar
2008-02-05 13:05 ` Jakub Jelinek
2008-02-05 16:18 ` Pavel Machek
2008-02-05 16:37 ` Ingo Molnar
2008-02-05 16:12 ` Pavel Machek
2008-02-05 13:08 ` Hugh Dickins
2008-02-05 15:00 ` Arjan van de Ven
2008-02-05 15:46 ` Pavel Machek
2008-02-05 15:49 ` Jiri Kosina
2008-02-05 15:55 ` Pavel Machek
2008-02-05 15:49 ` Ingo Molnar
2008-02-05 15:59 ` Pavel Machek
2008-02-05 16:06 ` Ingo Molnar [this message]
2008-02-05 22:03 ` Pavel Machek
2008-02-05 16:58 ` Arjan van de Ven
2008-02-05 17:33 ` Pavel Machek
2008-02-05 22:35 ` Jiri Kosina
2008-02-06 3:24 ` Randy Dunlap
2008-02-05 16:02 ` Pavel Machek
2008-02-05 16:09 ` Ingo Molnar
2008-02-05 22:04 ` Pavel Machek
2008-02-05 18:05 ` Pavel Machek
2008-02-05 20:42 ` Jiri Kosina
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