netdev - Re: [PATCH net] bonding: fix two race conditions in bond_store

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Message-Id: <20131114.162944.207243366387985452.davem@davemloft.net>
Date:	Thu, 14 Nov 2013 16:29:44 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	nikolay@...hat.com
Cc:	netdev@...r.kernel.org, fubar@...ibm.com, andy@...yhouse.net,
	vfalico@...hat.com
Subject: Re: [PATCH net] bonding: fix two race conditions in
 bond_store_updelay/downdelay

From: Nikolay Aleksandrov <nikolay@...hat.com>
Date: Wed, 13 Nov 2013 17:07:46 +0100

> This patch fixes two race conditions between bond_store_updelay/downdelay
> and bond_store_miimon which could lead to division by zero as miimon can
> be set to 0 while either updelay/downdelay are being set and thus miss the
> zero check in the beginning, the zero div happens because updelay/downdelay
> are stored as new_value / bond->params.miimon. Use rtnl to synchronize with
> miimon setting.
> 
> CC: Jay Vosburgh <fubar@...ibm.com>
> CC: Andy Gospodarek <andy@...yhouse.net>
> CC: Veaceslav Falico <vfalico@...hat.com>
> Signed-off-by: Nikolay Aleksandrov <nikolay@...hat.com>

Applied and queued up for -stable, thanks.
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