netdev - Re: [PATCH] team: set qdisc_tx_busylock to avoid LOCKDEP splat

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]

Date:	Thu, 04 Oct 2012 15:54:36 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	netdev@...r.kernel.org, jpirko@...hat.com
Subject: Re: [PATCH] team: set qdisc_tx_busylock to avoid LOCKDEP splat

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Thu, 04 Oct 2012 11:18:39 +0200

> From: Eric Dumazet <edumazet@...gle.com>
> 
> If a qdisc is installed on a team device, its possible to get
> a lockdep splat under stress, because nested dev_queue_xmit() can
> lock busylock a second time (on a different device, so its a false
> positive)
> 
> Avoid this problem using a distinct lock_class_key for team
> devices.
> 
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>
> Cc: Jiri Pirko <jpirko@...hat.com>

Applied.
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html