From: Oleg Nesterov <oleg@redhat.com>
To: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Roland McGrath <roland@redhat.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org, oss-security@lists.openwall.com,
Solar Designer <solar@openwall.com>,
Kees Cook <kees.cook@canonical.com>,
Al Viro <viro@zeniv.linux.org.uk>,
Neil Horman <nhorman@tuxdriver.com>,
linux-fsdevel@vger.kernel.org, pageexec@freemail.hu,
"Brad Spengler <spender@grsecurity.net>,
Eugene Teo" <eugene@redhat.com>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Subject: Re: [PATCH 1/2] oom: don't ignore rss in nascent mm
Date: Fri, 10 Sep 2010 00:05:04 +0200 [thread overview]
Message-ID: <20100909220504.GA6273@redhat.com> (raw)
In-Reply-To: <20100909140219.C942.A69D9226@jp.fujitsu.com>
On 09/09, KOSAKI Motohiro wrote:
>
> --- a/include/linux/sched.h
> +++ b/include/linux/sched.h
> @@ -1226,6 +1226,7 @@ struct task_struct {
> int pdeath_signal; /* The signal sent when the parent dies */
> /* ??? */
> unsigned int personality;
> + struct mm_struct *in_exec_mm;
Oh, yes, this has to be per-thread (unlike ->mm, btw).
I wonder if it makes sense to move ->cred_guard_mutex from task_struct
to signal_struct and thus make multiple-threads-inside-exec impossible.
Only one thread can win anyway.
Oleg.
next prev parent reply other threads:[~2010-09-09 22:05 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-27 22:02 [PATCH] exec argument expansion can inappropriately trigger OOM-killer Kees Cook
2010-08-30 0:19 ` KOSAKI Motohiro
2010-08-30 0:56 ` Roland McGrath
[not found] ` <20100830005648.431B7400D9-nL1rrgvulkc2UH6IwYuUx0EOCMrvLtNR@public.gmane.org>
2010-08-30 3:23 ` Solar Designer
2010-08-30 10:06 ` Roland McGrath
2010-08-30 19:48 ` Solar Designer
2010-08-31 0:40 ` Roland McGrath
2010-09-08 2:34 ` [PATCH 0/3] execve argument-copying fixes Roland McGrath
2010-09-08 2:35 ` [PATCH 1/3] setup_arg_pages: diagnose excessive argument size Roland McGrath
2010-09-08 8:29 ` pageexec
[not found] ` <4C874986.23581.F34F4BD-tVCe0bXVy/VhMnff8nq0I0CAg8bcNmFB@public.gmane.org>
2010-09-10 8:59 ` Roland McGrath
[not found] ` <20100910085915.8CC23405D5-nL1rrgvulkc2UH6IwYuUx0EOCMrvLtNR@public.gmane.org>
2010-09-11 13:30 ` pageexec-Y8qEzhMunLyT9ig0jae3mg
2010-09-14 19:33 ` Roland McGrath
[not found] ` <20100914193331.DB434403E8-nL1rrgvulkc2UH6IwYuUx0EOCMrvLtNR@public.gmane.org>
2010-09-14 22:35 ` pageexec-Y8qEzhMunLyT9ig0jae3mg
2010-09-08 11:57 ` Brad Spengler
2010-09-09 5:31 ` KOSAKI Motohiro
[not found] ` <20100909141534.C948.A69D9226-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2010-09-10 9:25 ` Roland McGrath
2010-09-10 9:43 ` KOSAKI Motohiro
[not found] ` <20100910092541.2864A405D5-nL1rrgvulkc2UH6IwYuUx0EOCMrvLtNR@public.gmane.org>
2010-09-11 13:39 ` pageexec-Y8qEzhMunLyT9ig0jae3mg
[not found] ` <4C8B8692.7649.3E0895B-tVCe0bXVy/VhMnff8nq0I0CAg8bcNmFB@public.gmane.org>
2010-09-14 18:51 ` Roland McGrath
[not found] ` <20100914185135.03DD6403E8-nL1rrgvulkc2UH6IwYuUx0EOCMrvLtNR@public.gmane.org>
2010-09-14 20:28 ` pageexec-Y8qEzhMunLyT9ig0jae3mg
[not found] ` <4C8FDAEF.17347.14CA1791-tVCe0bXVy/VhMnff8nq0I0CAg8bcNmFB@public.gmane.org>
2010-09-14 21:16 ` Roland McGrath
[not found] ` <20100914211644.E0C58403E8-nL1rrgvulkc2UH6IwYuUx0EOCMrvLtNR@public.gmane.org>
2010-09-14 22:27 ` pageexec-Y8qEzhMunLyT9ig0jae3mg
[not found] ` <4C8FF6EE.21454.153770F9-tVCe0bXVy/VhMnff8nq0I0CAg8bcNmFB@public.gmane.org>
2010-09-14 23:04 ` Roland McGrath
[not found] ` <20100914230411.B1F0D403E8-nL1rrgvulkc2UH6IwYuUx0EOCMrvLtNR@public.gmane.org>
2010-09-15 9:27 ` pageexec-Y8qEzhMunLyT9ig0jae3mg
[not found] ` <20100908115728.GB11762-JNS0hek0TMl4qEwOxq4T+Q@public.gmane.org>
2010-09-10 9:18 ` Roland McGrath
2010-09-08 2:36 ` [PATCH 2/3] execve: improve interactivity with large arguments Roland McGrath
2010-09-08 2:37 ` [PATCH 3/3] execve: make responsive to SIGKILL " Roland McGrath
2010-09-08 3:00 ` [PATCH 0/3] execve argument-copying fixes KOSAKI Motohiro
2010-09-09 5:01 ` [PATCH 0/2] execve memory exhaust of " KOSAKI Motohiro
2010-09-09 5:03 ` [PATCH 1/2] oom: don't ignore rss in nascent mm KOSAKI Motohiro
2010-09-09 22:05 ` Oleg Nesterov [this message]
[not found] ` <20100909220504.GA6273-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2010-09-10 9:39 ` Roland McGrath
2010-09-10 9:57 ` [PATCH] move cred_guard_mutex from task_struct to signal_struct KOSAKI Motohiro
2010-09-10 17:24 ` Oleg Nesterov
2010-09-16 5:51 ` KOSAKI Motohiro
2010-09-09 5:04 ` [PATCH 2/2] execve: check the VM has enough memory at first KOSAKI Motohiro
2010-09-10 15:06 ` Linus Torvalds
2010-09-14 1:52 ` KOSAKI Motohiro
2010-09-16 5:51 ` KOSAKI Motohiro
2010-09-16 15:01 ` Linus Torvalds
[not found] ` <20100830032331.GA22773-cxoSlKxDwOJWk0Htik3J/w@public.gmane.org>
2010-08-30 17:49 ` [PATCH] exec argument expansion can inappropriately trigger OOM-killer Solar Designer
[not found] ` <20100830174920.GA25091-cxoSlKxDwOJWk0Htik3J/w@public.gmane.org>
2010-08-30 22:08 ` Brad Spengler
[not found] ` <20100830220847.GA24980-JNS0hek0TMl4qEwOxq4T+Q@public.gmane.org>
2010-08-31 11:53 ` Solar Designer
2010-08-31 11:56 ` [PATCH] exec argument expansion can inappropriately triggerOOM-killer Tetsuo Handa
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