LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
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

  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 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

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20080205160620.GA28812@elte.hu \
    --to=mingo@elte.hu \
    --cc=abel.bernabeu@gmail.com \
    --cc=arjan@infradead.org \
    --cc=hugh@veritas.com \
    --cc=jkosina@suse.cz \
    --cc=linux-kernel@vger.kernel.org \
    --cc=pavel@ucw.cz \
    --subject='Re: brk randomization breaks columns' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).