linux-kernel - Re: [PATCH net] virtio-net: fix refill races during restore

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Message-Id: <20140102.192354.1248162707820922093.davem@davemloft.net>
Date:	Thu, 02 Jan 2014 19:23:54 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	jasowang@...hat.com
Cc:	rusty@...tcorp.com.au, mst@...hat.com,
	virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, amit.shah@...hat.com,
	eric.dumazet@...il.com
Subject: Re: [PATCH net] virtio-net: fix refill races during restore

From: Jason Wang <jasowang@...hat.com>
Date: Mon, 30 Dec 2013 11:34:40 +0800

> During restoring, try_fill_recv() was called with neither napi lock nor napi
> disabled. This can lead two try_fill_recv() was called in the same time. Fix
> this by refilling before trying to enable napi.
> 
> Fixes 0741bcb5584f9e2390ae6261573c4de8314999f2
> (virtio: net: Add freeze, restore handlers to support S4).
> 
> Cc: Amit Shah <amit.shah@...hat.com>
> Cc: Rusty Russell <rusty@...tcorp.com.au>
> Cc: Michael S. Tsirkin <mst@...hat.com>
> Cc: Eric Dumazet <eric.dumazet@...il.com>
> Signed-off-by: Jason Wang <jasowang@...hat.com>

Applied and queued up for -stable, thanks.
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