From: "Michael S. Tsirkin" <mst@redhat.com>
To: linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
Rusty Russell <rusty@rustcorp.com.au>,
Jason Wang <jasowang@redhat.com>,
David Miller <davem@davemloft.net>
Subject: [PATCH v2 0/2] virtio_net: fix race in RX VQ processing
Date: Tue, 9 Jul 2013 08:12:57 +0300 [thread overview]
Message-ID: <1373346713-442-1-git-send-email-mst@redhat.com> (raw)
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
next reply other threads:[~2013-07-09 5:11 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-09 5:12 Michael S. Tsirkin [this message]
2013-07-09 5:13 ` [PATCH v2 1/2] virtio: support unlocked queue poll Michael S. Tsirkin
2013-07-09 5:13 ` Michael S. Tsirkin
2013-07-09 5:13 ` [PATCH v2 2/2] virtio_net: fix race in RX VQ processing Michael S. Tsirkin
2013-07-09 5:13 ` Michael S. Tsirkin
2013-07-09 9:32 ` [PATCH v2 0/2] " David Miller
2013-07-09 10:21 ` Michael S. Tsirkin
2013-07-09 10:19 ` [PATCH v2 1/2] virtio: support unlocked queue poll Michael S. Tsirkin
2013-07-09 19:46 ` [PATCH v2 0/2] virtio_net: fix race in RX VQ processing David Miller
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