diff options
| author | Fam Zheng <famz@redhat.com> | 2014-10-31 11:04:31 +0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2014-10-31 11:29:02 +0100 |
| commit | 0ba1f53191221b541b938df86a39eeccfb87f996 (patch) | |
| tree | e930a80d0cbbf94d2d40eb8e20488b855607d1cc | |
| parent | fb7b5c0df6e3c501973ce4d57eb2b1d4344a519d (diff) | |
virtio-scsi: Fix num_queue input validation
We need to count the ctrlq and eventq, and also cleanup before
returning. Besides, the format string should be unsigned.
The number could never be less than zero.
Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| -rw-r--r-- | hw/scsi/virtio-scsi.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/hw/scsi/virtio-scsi.c b/hw/scsi/virtio-scsi.c index 235c2053da..fdcacfd79a 100644 --- a/hw/scsi/virtio-scsi.c +++ b/hw/scsi/virtio-scsi.c @@ -804,10 +804,11 @@ void virtio_scsi_common_realize(DeviceState *dev, Error **errp, virtio_init(vdev, "virtio-scsi", VIRTIO_ID_SCSI, sizeof(VirtIOSCSIConfig)); - if (s->conf.num_queues <= 0 || s->conf.num_queues > VIRTIO_PCI_QUEUE_MAX) { - error_setg(errp, "Invalid number of queues (= %" PRId32 "), " + if (s->conf.num_queues == 0 || + s->conf.num_queues > VIRTIO_PCI_QUEUE_MAX - 2) { + error_setg(errp, "Invalid number of queues (= %" PRIu32 "), " "must be a positive integer less than %d.", - s->conf.num_queues, VIRTIO_PCI_QUEUE_MAX); + s->conf.num_queues, VIRTIO_PCI_QUEUE_MAX - 2); virtio_cleanup(vdev); return; } |