netdev - Re: [PATCH net-next] rocker: fix neigh tbl index increment race

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Date:	Mon, 15 Jun 2015 16:04:42 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	sfeldma@...il.com
Cc:	netdev@...r.kernel.org, jiri@...nulli.us,
	simon.horman@...ronome.com, makita.toshiaki@....ntt.co.jp
Subject: Re: [PATCH net-next] rocker: fix neigh tbl index increment race

From: sfeldma@...il.com
Date: Fri, 12 Jun 2015 21:24:40 -0700

> From: Scott Feldman <sfeldma@...il.com>
> 
> rocker->neigh_tbl_next_index is used to generate unique indices for neigh
> entries programmed into the device.  The way new indices were generated was
> racy with the new prepare-commit transaction model.  A simple fix here
> removes the race.  The race was with two processes getting the same index,
> one process using prepare-commit, the other not:
 ...
> Reported-by: Simon Horman <simon.horman@...ronome.com>
> Signed-off-by: Scott Feldman <sfeldma@...il.com>

Applied.
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