linux-kernel - Re: [PATCH net-next] hv_netvsc: Fix race condition on Multi-Send Data field

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Message-Id: <20151214.000222.959007472004329129.davem@davemloft.net>
Date:	Mon, 14 Dec 2015 00:02:22 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	haiyangz@...rosoft.com
Cc:	netdev@...r.kernel.org, kys@...rosoft.com, olaf@...fle.de,
	jasowang@...hat.com, linux-kernel@...r.kernel.org,
	driverdev-devel@...uxdriverproject.org
Subject: Re: [PATCH net-next] hv_netvsc: Fix race condition on Multi-Send
 Data field

From: Haiyang Zhang <haiyangz@...rosoft.com>
Date: Thu, 10 Dec 2015 12:19:35 -0800

> In commit 2a04ae8acb14 ("hv_netvsc: remove locking in netvsc_send()"), the
> locking for MSD (Multi-Send Data) field was removed. This could cause a
> race condition between RNDIS control messages and data packets processing,
> because these two types of traffic are not synchronized.
> This patch fixes this issue by sending control messages out directly
> without reading MSD field.
> 
> Signed-off-by: Haiyang Zhang <haiyangz@...rosoft.com>
> Reviewed-by: K. Y. Srinivasan <kys@...rosoft.com>

Applied.
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