linux-kernel - Re: [PATCH v2] core: workqueue: return on workqueue recursion

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 for Android: free password hash cracker in your pocket

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

Message-ID: <4B75159C.6080100@kernel.org>
Date:	Fri, 12 Feb 2010 17:47:24 +0900
From:	Tejun Heo <tj@...nel.org>
To:	Simon Kagstrom <simon.kagstrom@...insight.net>
CC:	Oleg Nesterov <oleg@...hat.com>, linux-kernel@...r.kernel.org,
	laijs@...fujitsu.com, rusty@...tcorp.com.au,
	akpm@...ux-foundation.org, mingo@...e.hu
Subject: Re: [PATCH v2] core: workqueue: return on workqueue recursion

On 02/04/2010 05:02 PM, Simon Kagstrom wrote:
> When the workqueue is flushed from workqueue context (recursively), the
> system enters a strange state where things at random (dependent on the
> global workqueue) start misbehaving. For example, for us the console and
> logins locks up while the web server continues running.
> 
> The system becomes unstable since the workqueue barrier locks the
> workqueue. This patch instead returns if the workqueue is flushed
> recursively, which keeps the workqueue alive but warns.
> 
> Signed-off-by: Simon Kagstrom <simon.kagstrom@...insight.net>

applied to wq tree.  Will push out when the merge window opens.

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/