netdev - Re: [Xen-devel] [PATCH 1/1] xen/netback: only non-freed SKB is queued into tx

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Date:	Thu, 28 Jun 2012 16:55:50 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	annie.li@...cle.com
Cc:	xen-devel@...ts.xensource.com, netdev@...r.kernel.org,
	Ian.Campbell@...rix.com, konrad.wilk@...cle.com,
	kurt.hackel@...cle.com
Subject: Re: [Xen-devel] [PATCH 1/1] xen/netback: only non-freed SKB is
 queued into tx_queue

From: annie.li@...cle.com
Date: Wed, 27 Jun 2012 18:46:58 +0800

> From: Annie Li <Annie.li@...cle.com>
> 
> After SKB is queued into tx_queue, it will be freed if request_gop is NULL.
> However, no dequeue action is called in this situation, it is likely that
> tx_queue constains freed SKB. This patch should fix this issue, and it is
> based on 3.5.0-rc4+.
> 
> This issue is found through code inspection, no bug is seen with it currently.
> I run netperf test for several hours, and no network regression was found.
> 
> Signed-off-by: Annie Li <annie.li@...cle.com>

I lack the expertiece necessary to properly review this, so I really
need a Xen expert to look this over.
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