linux-kernel - Re: blkcg: circular dependency between blkcg_pol_mutex and s

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]

Date:	Sun, 4 May 2014 15:26:30 -0400
From:	Tejun Heo <tj@...nel.org>
To:	Sasha Levin <sasha.levin@...cle.com>
Cc:	axboe@...nel.dk, Li Zefan <lizefan@...wei.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Dave Jones <davej@...hat.com>, cgroups@...r.kernel.org
Subject: Re: blkcg: circular dependency between blkcg_pol_mutex and s_active

Hello,

On Fri, May 02, 2014 at 11:56:59AM -0400, Sasha Levin wrote:
> While fuzzing with trinity inside a KVM tools guest running the latest -next
> kernel I've stumbled on the following:

This is a highly unlikely deadlock which got introduced by recent
changes in cgroup core.  I'm working to further simplify locking in
cgroup core.  Will prep a quick fix for this issue soon.

Thanks.

-- 
tejun
--
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/