linux-kernel - Re: [RFC][PATCH 1/4] New css->refcnt implementation.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <6599ad830812100100i54132600he52504b4785542ec@mail.gmail.com>
Date:	Wed, 10 Dec 2008 01:00:42 -0800
From:	Paul Menage <menage@...gle.com>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Cc:	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"nishimura@....nes.nec.co.jp" <nishimura@....nes.nec.co.jp>,
	"balbir@...ux.vnet.ibm.com" <balbir@...ux.vnet.ibm.com>,
	"lizf@...fujitsu.com" <lizf@...fujitsu.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [RFC][PATCH 1/4] New css->refcnt implementation.

On Fri, Dec 5, 2008 at 3:24 AM, KAMEZAWA Hiroyuki
<kamezawa.hiroyu@...fujitsu.com> wrote:
>> The basic rule is that you're only supposed to increment the css
>> refcount if you have:
>>
>> - a reference to a task in the cgroup (that is pinned via task_lock()
>> so it can't be moved away)
>> or
>> - an existing reference to the css
>>
> My problem is that we can do css_get() after pre_destroy() and
> css's refcnt goes down to 0.

But where are you getting the reference from in order to do css_get()?
Which call in mem cgroup are you concerned about?

Paul
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/