From: Vasiliy Kulikov <segoon@openwall.com>
To: Ingo Molnar <mingo@elte.hu>, solar@openwall.com
Cc: Andrew Morton <akpm@linux-foundation.org>,
kernel-hardening@lists.openwall.com,
Randy Dunlap <rdunlap@xenotime.net>,
"Eric W. Biederman" <ebiederm@xmission.com>,
"Serge E. Hallyn" <serge.hallyn@canonical.com>,
Daniel Lezcano <daniel.lezcano@free.fr>,
Oleg Nesterov <oleg@redhat.com>, Tejun Heo <tj@kernel.org>,
linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-security-module@vger.kernel.org
Subject: [kernel-hardening] Re: [RFC] ipc: introduce shm_rmid_forced sysctl
Date: Fri, 1 Jul 2011 15:35:33 +0400 [thread overview]
Message-ID: <20110701113533.GA19945@albatros> (raw)
In-Reply-To: <20110701112534.GG20990@elte.hu>
On Fri, Jul 01, 2011 at 13:25 +0200, Ingo Molnar wrote:
> Furthermore, if testing shows that this is not actually breaking
> anything in a serious way we could also in theory simplify the patch
> and just make this the default behavior with no runtime ability to
> switch it off.
I'm afraid it's impossible. From -ow readme:
"Of course, this breaks the way things are defined, so some applications
might stop working. In particular, expect most commercial databases to
break. Apache and PostgreSQL are known to work, though. :-)"
http://www.openwall.com/linux/README.shtml
But as it was written in days of Linux 2.4.x, the situation could have
changed. A desktop system seems to work.
Thanks,
--
Vasiliy Kulikov
http://www.openwall.com - bringing security into open computing environments
WARNING: multiple messages have this Message-ID (diff)
From: Vasiliy Kulikov <segoon@openwall.com>
To: Ingo Molnar <mingo@elte.hu>, solar@openwall.com
Cc: Andrew Morton <akpm@linux-foundation.org>,
kernel-hardening@lists.openwall.com,
Randy Dunlap <rdunlap@xenotime.net>,
"Eric W. Biederman" <ebiederm@xmission.com>,
"Serge E. Hallyn" <serge.hallyn@canonical.com>,
Daniel Lezcano <daniel.lezcano@free.fr>,
Oleg Nesterov <oleg@redhat.com>, Tejun Heo <tj@kernel.org>,
linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-security-module@vger.kernel.org
Subject: Re: [RFC] ipc: introduce shm_rmid_forced sysctl
Date: Fri, 1 Jul 2011 15:35:33 +0400 [thread overview]
Message-ID: <20110701113533.GA19945@albatros> (raw)
In-Reply-To: <20110701112534.GG20990@elte.hu>
On Fri, Jul 01, 2011 at 13:25 +0200, Ingo Molnar wrote:
> Furthermore, if testing shows that this is not actually breaking
> anything in a serious way we could also in theory simplify the patch
> and just make this the default behavior with no runtime ability to
> switch it off.
I'm afraid it's impossible. From -ow readme:
"Of course, this breaks the way things are defined, so some applications
might stop working. In particular, expect most commercial databases to
break. Apache and PostgreSQL are known to work, though. :-)"
http://www.openwall.com/linux/README.shtml
But as it was written in days of Linux 2.4.x, the situation could have
changed. A desktop system seems to work.
Thanks,
--
Vasiliy Kulikov
http://www.openwall.com - bringing security into open computing environments
next prev parent reply other threads:[~2011-07-01 11:35 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-22 15:25 [kernel-hardening] [RFC] ipc: introduce shm_rmid_forced sysctl Vasiliy Kulikov
2011-06-22 15:25 ` Vasiliy Kulikov
2011-06-22 16:03 ` [kernel-hardening] " Randy Dunlap
2011-06-22 16:03 ` Randy Dunlap
2011-06-29 22:14 ` [kernel-hardening] " Andrew Morton
2011-06-29 22:14 ` Andrew Morton
2011-06-30 9:21 ` [kernel-hardening] " Vasiliy Kulikov
2011-06-30 9:21 ` Vasiliy Kulikov
2011-06-30 13:08 ` [kernel-hardening] " Vasiliy Kulikov
2011-06-30 13:08 ` Vasiliy Kulikov
2011-07-01 11:25 ` [kernel-hardening] " Ingo Molnar
2011-07-01 11:25 ` Ingo Molnar
2011-07-01 11:35 ` Vasiliy Kulikov [this message]
2011-07-01 11:35 ` Vasiliy Kulikov
2011-07-01 12:04 ` [kernel-hardening] " Ingo Molnar
2011-07-01 12:04 ` Ingo Molnar
2011-07-01 14:18 ` [kernel-hardening] " Alan Cox
2011-07-01 14:18 ` Alan Cox
2011-07-03 19:38 ` [kernel-hardening] " Ingo Molnar
2011-07-03 19:38 ` Ingo Molnar
2011-07-03 21:25 ` [kernel-hardening] " Alan Cox
2011-07-03 21:25 ` Alan Cox
2011-07-02 16:50 ` [kernel-hardening] " Solar Designer
2011-07-02 16:50 ` Solar Designer
2011-07-02 17:31 ` [kernel-hardening] " Solar Designer
2011-07-02 17:31 ` Solar Designer
2011-07-04 15:08 ` [kernel-hardening] " Oleg Nesterov
2011-07-04 15:08 ` Oleg Nesterov
2011-07-04 15:36 ` [kernel-hardening] " Vasiliy Kulikov
2011-07-04 15:36 ` Vasiliy Kulikov
2011-07-04 15:44 ` [kernel-hardening] " Oleg Nesterov
2011-07-04 15:44 ` Oleg Nesterov
2011-07-04 16:06 ` [kernel-hardening] " Vasiliy Kulikov
2011-07-04 16:06 ` Vasiliy Kulikov
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