linux-kernel - [PATCH v2 0/2] virtio_net: fix race in RX VQ processing

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Message-ID: <1373346713-442-1-git-send-email-mst@redhat.com>
Date:	Tue, 9 Jul 2013 08:12:57 +0300
From:	"Michael S. Tsirkin" <mst@...hat.com>
To:	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	Rusty Russell <rusty@...tcorp.com.au>,
	Jason Wang <jasowang@...hat.com>,
	David Miller <davem@...emloft.net>
Subject: [PATCH v2 0/2] virtio_net: fix race in RX VQ processing

Jason Wang reported a race in RX VQ processing:
virtqueue_enable_cb is called outside napi lock,
violating virtio serialization rules.
The race has been there from day 1, but it got especially nasty in 3.0
when commit a5c262c5fd83ece01bd649fb08416c501d4c59d7
"virtio_ring: support event idx feature"
added more dependency on vq state.

Please review, and consider for 3.11 and stable.

Changes from v1:
	- Added Jason's Tested-by tag
	- minor coding style fix

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