Am 17.08.2016 um 15:58 schrieb Stefan Hajnoczi:
On Mon, Aug 15, 2016 at 01:54:14PM +0100, Stefan Hajnoczi wrote:
The VirtQueue->inuse field is not always updated correctly. These patches fix
it.
Originally this series was called "virtio-balloon: fix stats vq migration" but
Ladi Prosek posted a nicer fix called "balloon: Fix failure of updating guest
memory status". I dropped the virtio-balloon patches.
Changes from previous series:
* Missing comma in error formatting [Fam]
* virtio_descard() -> virtio_discard() [Michael]
* Multi-line comment style [Cornelia]
Stefan Hajnoczi (2):
virtio: recalculate vq->inuse after migration
virtio: decrement vq->inuse in virtqueue_discard()
hw/virtio/virtio.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
I should mention this is for QEMU 2.7. These fixes are needed if the
CVE-2016-5403 patch has been applied.
Without these patches any device that holds VirtQueueElements across
live migration will terminate with a "Virtqueue size exceeded" error
message. virtio-balloon and virtio-scsi are affected. virtio-blk
probably too but I haven't tested it.
Stefan
I noticed that these patches are not in master yet and therefore
not included in the 2.7.0-rc4 tagges yesterday. Is there any issue with them?
Peter
