From: Pavel Machek <pavel@ucw.cz>
To: Jesse Pollard <jesse@cats-chateau.net>
Cc: Aaron Lehmann <aaronl@vitelus.com>,
Jesper Juhl <juhl-lkml@dif.dk>, Andrew Morton <akpm@osdl.org>,
linux-kernel@vger.kernel.org, Eric Youngdale <eric@andante.org>,
Eric Youngdale <ericy@cais.com>
Subject: Re: [PATCH] stronger ELF sanity checks v2
Date: Fri, 16 Jan 2004 22:36:46 +0100 [thread overview]
Message-ID: <20040116213646.GA250@elf.ucw.cz> (raw)
In-Reply-To: <04011613552300.04912@tabby>
Hi!
> > > On Tue, Jan 13, 2004 at 02:55:07AM +0100, Jesper Juhl wrote:
> > > > Here's the second version of my patch to add better sanity checks for
> > > > binfmt_elf
> > >
> > > I assume this breaks Brian Raiter's tiny ELF executables[1]. Even
> > > though these binaries are evil hacks that don't comply to standards
> > > and serve no serious purpose, I'm not sure what the purpose of the
> > > sanity checks is. Are there any risks associated with running
> > > non-compliant ELF executables? (Now that I mention it, the
> >
> > You get vy ugly behaviour. If you compile executable with huge static
> > data, it will compile okay, link okay, *launch okay* and die on
> > segfault. That's wrong, it should have died on -ENOMEM during exec.
>
> Wouldn't that depend on the overcommit options?
I believe in this case data were so big they did not even fit in
address space...
Pavel
--
When do you have a heart between your knees?
[Johanka's followup: and *two* hearts?]
next prev parent reply other threads:[~2004-01-16 21:37 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-01-13 1:55 [PATCH] stronger ELF sanity checks v2 Jesper Juhl
2004-01-13 3:32 ` Aaron Lehmann
2004-01-13 10:39 ` Eric W. Biederman
2004-01-16 16:08 ` Pavel Machek
2004-01-16 19:55 ` Jesse Pollard
2004-01-16 21:36 ` Pavel Machek [this message]
2004-01-13 17:35 ` Jakub Jelinek
2004-01-13 19:54 ` Jesper Juhl
2004-01-15 7:43 ` Ulrich Drepper
[not found] <1dmam-2Xk-11@gated-at.bofh.it>
[not found] ` <1dAQW-109-3@gated-at.bofh.it>
[not found] ` <1dCSg-5vk-55@gated-at.bofh.it>
[not found] ` <1eaqw-6Dk-29@gated-at.bofh.it>
2004-01-15 13:13 ` Pascal Schmidt
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