[Qemu-devel] [PATCH-v2 0/3] virtio/vhost: Add checks for uninitialized VQs

[Nicholas A. Bellinger]

From: Nicholas Bellinger <address@hidden>

Hi folks,

This series adds a virtio_queue_valid() for use by virtio-pci code in
order to prevent opreations upon uninitialized VQs, which is currently
expected to occur during seabios setup of virtio-scsi with in-flight
vhost-scsi-pci device code.

On the vhost side, it also adds virtio_queue_valid() sanity checks in
vhost_virtqueue_[start,stop]() and vhost_verify_ring_mappings() in order
to skip the same uninitialized VQs.

Changes from v1:
  - Remove now unnecessary virtio_queue_get_num() calls in virtio-pci.c
  - Add virtio_queue_valid() calls in vhost_virtqueue_[start,stop]()

Please review.

--nab

Michael S. Tsirkin (1):
  virtio: add API to check that ring is setup

Nicholas Bellinger (2):
  virtio-pci: Add virtio_queue_valid checks ahead of
    virtio_queue_get_num
  vhost: Skip uninitialized VQs in vhost_virtqueue_[start,stop]

 hw/vhost.c      |   12 ++++++++++++
 hw/virtio-pci.c |   34 +++++++++++++++-------------------
 hw/virtio.c     |    5 +++++
 hw/virtio.h     |    1 +
 4 files changed, 33 insertions(+), 19 deletions(-)

-- 
1.7.2.5