diff options
| author | Fam Zheng <famz@redhat.com> | 2014-08-26 14:30:30 +0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2014-08-26 13:20:44 +0200 |
| commit | c9f6552803d852d593dec9ef5bb39b7a61091963 (patch) | |
| tree | e1de479a85ac16c61799faf35e003308e383bb90 | |
| parent | f93d2c15d603b811c877efbf2a47e418bf975f0c (diff) | |
virtio-scsi: Report error if num_queues is 0 or too large
No cmd vq surprises guest (Linux panics in virtscsi_probe), too many
queues abort qemu (in the following virtio_add_queue).
Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| -rw-r--r-- | hw/scsi/virtio-scsi.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/hw/scsi/virtio-scsi.c b/hw/scsi/virtio-scsi.c index 2dd92552e0..86aba8851d 100644 --- a/hw/scsi/virtio-scsi.c +++ b/hw/scsi/virtio-scsi.c @@ -699,6 +699,12 @@ 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 "), " + "must be a positive integer less than %d.", + s->conf.num_queues, VIRTIO_PCI_QUEUE_MAX); + return; + } s->cmd_vqs = g_malloc0(s->conf.num_queues * sizeof(VirtQueue *)); s->sense_size = VIRTIO_SCSI_SENSE_SIZE; s->cdb_size = VIRTIO_SCSI_CDB_SIZE; |