netdev - Re: [PATCH net-next] bonding: remove locking from bond_set_rx

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:	Mon, 05 Aug 2013 15:45:48 +0200
From:	Nikolay Aleksandrov <nikolay@...hat.com>
To:	Veaceslav Falico <vfalico@...hat.com>
CC:	netdev@...r.kernel.org, Jay Vosburgh <fubar@...ibm.com>,
	Andy Gospodarek <andy@...yhouse.net>
Subject: Re: [PATCH net-next] bonding: remove locking from bond_set_rx_mode()

On 08/05/2013 02:56 PM, Veaceslav Falico wrote:
> We're already protected by RTNL lock, so nothing can happen to bond/its
> slaves, and thus the locking is useless here (both bond->lock and
> bond->curr_active_slave).
> 
> Also, add ASSERT_RTNL() both to bond_set_rx_mode() and bond_hw_addr_swap()
> to catch possible uses of it without RTNL locking.
> 
> This patch also saves us from a lockdep false-positive in
> bond_set_rx_mode() vs bond_hw_addr_swap().
> 
> CC: Jay Vosburgh <fubar@...ibm.com>
> CC: Andy Gospodarek <andy@...yhouse.net>
> CC: Nikolay Aleksandrov <nikolay@...hat.com>
> Signed-off-by: Veaceslav Falico <vfalico@...hat.com>
> ---

Signed-off-by: Nikolay Aleksandrov <nikolay@...hat.com>

--
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