netdev - Re: [PATCH] e1000: fix race condition while driver unload/reset using kref count

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Date:	Wed, 02 Mar 2011 17:56:41 -0800
From:	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To:	"prasanna.panchamukhi@...erbed.com" 
	<prasanna.panchamukhi@...erbed.com>
Cc:	"Allan, Bruce W" <bruce.w.allan@...el.com>,
	"Brandeburg, Jesse" <jesse.brandeburg@...el.com>,
	"Pieper, Jeffrey E" <jeffrey.e.pieper@...el.com>,
	"e1000-devel@...ts.sourceforge.net" 
	<e1000-devel@...ts.sourceforge.net>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH] e1000: fix race condition while driver unload/reset
 using kref count

On Wed, 2011-03-02 at 10:46 -0800, prasanna.panchamukhi@...erbed.com
wrote:
> This race conditions occurs with reentrant e1000_down(), which gets
> called by multiple threads while driver unload or reset.
> This patch fixes the race condition when one thread tries to destroy
> the memory allocated for tx buffer_info, while another thread still
> happen to access tx buffer_info.
> This patch fixes the above race condition using kref count.
> 
> Signed-off-by: Prasanna S. Panchamukhi
> <prasanna.panchamukhi@...erbed.com>
> ---
>  drivers/net/e1000/e1000.h      |    2 +
>  drivers/net/e1000/e1000_main.c |   41
> +++++++++++++++++++++++++++++++++++++--
>  2 files changed, 40 insertions(+), 3 deletions(-) 

Thanks Prasanna!  I have added the patch to my e1000 queue of patches.

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