LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Jiri Kosina <jkosina@suse.cz>
To: Pavel Machek <pavel@ucw.cz>
Cc: kernel list <linux-kernel@vger.kernel.org>,
Ingo Molnar <mingo@elte.hu>,
Abel Bernabeu <abel.bernabeu@gmail.com>,
Hugh Dickins <hugh@veritas.com>,
Arjan van de Ven <arjan@infradead.org>
Subject: Re: brk randomization breaks columns
Date: Tue, 5 Feb 2008 21:42:27 +0100 (CET) [thread overview]
Message-ID: <Pine.LNX.4.64.0802052139460.30955@jikos.suse.cz> (raw)
In-Reply-To: <20080205180519.GA1525@elf.ucw.cz>
On Tue, 5 Feb 2008, Pavel Machek wrote:
> Sorry, I now tested the patch. It looked good to my untrained eyes, but
> upon testing it on columns:
> ...
> personality(PER_LINUX) = 4194304
> geteuid() = 1000
> getuid() = 1000
> getgid() = 1002
> getegid() = 1002
> brk(0x8054098) = 0x922d000
> --- SIGSEGV (Segmentation fault) @ 0 (0) ---
> ...it should have said -EINVAL or something like that.
I don't think so.
brk() should return the value of the current break when passed an
unreasonable argument (as in the case you ilustrated -- it tried to set
the brk lower than start_brk, which doesn't make sense). The only error
values brk() is allowed to return are ENOMEM and EAGAIN, which don't fit
into this situation. This is desgribed both in SUS and linux manpages.
--
Jiri Kosina
SUSE Labs
prev parent reply other threads:[~2008-02-05 20:42 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
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 [this message]
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=Pine.LNX.4.64.0802052139460.30955@jikos.suse.cz \
--to=jkosina@suse.cz \
--cc=abel.bernabeu@gmail.com \
--cc=arjan@infradead.org \
--cc=hugh@veritas.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@elte.hu \
--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).