linux-kernel - Re: [PATCH v2] cls_cgroup: Fix rcu lockdep warning

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] [day] [month] [year] [list]

Message-Id: <20100903.095539.220051635.davem@davemloft.net>
Date:	Fri, 03 Sep 2010 09:55:39 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	lizf@...fujitsu.com
Cc:	herbert@...dor.hengli.com.au, davej@...hat.com,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	peterz@...radead.org, menage@...gle.com
Subject: Re: [PATCH v2] cls_cgroup: Fix rcu lockdep warning

From: Li Zefan <lizf@...fujitsu.com>
Date: Fri, 03 Sep 2010 09:42:43 +0800

> Dave reported an rcu lockdep warning on 2.6.35.4 kernel
> 
> task->cgroups and task->cgroups->subsys[i] are protected by RCU.
> So we avoid accessing invalid pointers here. This might happen,
> for example, when you are deref-ing those pointers while someone
> move @task from one cgroup to another.
> 
> Reported-by: Dave Jones <davej@...hat.com>
> Signed-off-by: Li Zefan <lizf@...fujitsu.com>

Applied, thanks.
--
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/