From: Cyrill Gorcunov <gorcunov@openvz.org>
To: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: linux-kernel@vger.kernel.org, akpm@linux-foundation.org,
ebiederm@xmission.com, xemul@openvz.org, xemul@parallels.com,
serge.hallyn@canonical.com, keescook@chromium.org,
kamezawa.hiroyu@jp.fujitsu.com, adobriyan@gmail.com,
tj@kernel.org, avagin@openvz.org, segoon@openwall.com
Subject: Re: [RFC c/r 3/4] c/r: procfs: add arg_start/end, env_start/end and exit_code members to /proc/$pid/stat
Date: Sat, 28 Jan 2012 00:10:22 +0400 [thread overview]
Message-ID: <20120127201022.GP11086@moon> (raw)
In-Reply-To: <4F230265.8050506@jp.fujitsu.com>
On Fri, Jan 27, 2012 at 03:00:37PM -0500, KOSAKI Motohiro wrote:
...
>
> > +
> > + seq_printf(m, "%d\n", task->exit_code);
> > +
>
> Bad this part seems to make new side channel. exit_code is one of
> inter process communication messages. IPC messages should NOT be
> observed from completely unrelated proesses.
>
You mean we need "permitted" test here, right?
Cyrill
next prev parent reply other threads:[~2012-01-27 20:10 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-27 17:53 [RFC c/r 0/4] [RFC c/r 0/@total@] A pile in c/r sake Cyrill Gorcunov
2012-01-27 17:53 ` [RFC c/r 1/4] fs, proc: Introduce /proc/<pid>/task/<tid>/children entry v9 Cyrill Gorcunov
2012-01-27 17:53 ` [RFC c/r 2/4] [RFC] syscalls, x86: Add __NR_kcmp syscall v7 Cyrill Gorcunov
2012-01-27 18:05 ` H. Peter Anvin
2012-01-27 18:11 ` Cyrill Gorcunov
2012-01-27 18:15 ` Andi Kleen
2012-01-27 18:24 ` Cyrill Gorcunov
2012-01-27 18:30 ` H. Peter Anvin
2012-01-28 17:19 ` Michael Kerrisk
2012-01-28 17:34 ` Cyrill Gorcunov
2012-01-28 17:36 ` Cyrill Gorcunov
2012-01-27 18:31 ` Andi Kleen
2012-01-27 18:40 ` Cyrill Gorcunov
2012-01-27 19:40 ` Andi Kleen
2012-01-27 20:55 ` Eric W. Biederman
2012-01-27 18:40 ` Eric W. Biederman
2012-01-27 18:45 ` Cyrill Gorcunov
2012-01-27 19:10 ` Cyrill Gorcunov
2012-01-27 19:37 ` Vasiliy Kulikov
2012-01-27 19:59 ` hpanvin@gmail.com
2012-01-27 20:07 ` Cyrill Gorcunov
2012-01-27 20:19 ` KOSAKI Motohiro
2012-01-27 20:33 ` Eric W. Biederman
2012-01-27 20:50 ` Cyrill Gorcunov
2012-01-27 21:19 ` Eric W. Biederman
2012-01-27 20:34 ` Glauber Costa
2012-01-27 20:37 ` H. Peter Anvin
2012-01-27 20:47 ` Cyrill Gorcunov
2012-01-27 17:53 ` [RFC c/r 3/4] c/r: procfs: add arg_start/end, env_start/end and exit_code members to /proc/$pid/stat Cyrill Gorcunov
2012-01-27 18:29 ` Kees Cook
2012-01-27 20:00 ` KOSAKI Motohiro
2012-01-27 20:10 ` Cyrill Gorcunov [this message]
2012-01-27 17:53 ` [RFC c/r 4/4] c/r: prctl: Extend PR_SET_MM to set up more mm_struct entries Cyrill Gorcunov
2012-01-27 18:37 ` Kees Cook
2012-01-27 18:43 ` Cyrill Gorcunov
2012-01-27 20:31 ` KOSAKI Motohiro
2012-01-27 20:28 ` KOSAKI Motohiro
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