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authorPaolo Bonzini <pbonzini@redhat.com>2012-06-12 18:37:25 +0200
committerPaolo Bonzini <pbonzini@redhat.com>2012-07-02 11:27:00 +0200
commit619d7ae952bb61ec27ec21fe4a383a8d4dd4cd70 (patch)
treeee97bc4c2a8b74b3a451774d41364ffff3dde413
parente8f943c3bcc2a578bfd30b825f2ebaf345c63a09 (diff)
virtio-scsi: do not crash on adding buffers to the event queue
The event queue is not supported yet and the handler does not have to do much anyway when buffers are added. However, the handler is called unconditionally by the virtio layer, and this results in a crash as soon as buffers are added to the event queue because we pass NULL. Reported-by: Bryan Venteicher <bryanv@daemoninthecloset.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
-rw-r--r--hw/virtio-scsi.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/hw/virtio-scsi.c b/hw/virtio-scsi.c
index e1a767ea78..0a5ac40e2f 100644
--- a/hw/virtio-scsi.c
+++ b/hw/virtio-scsi.c
@@ -405,6 +405,10 @@ static void virtio_scsi_handle_ctrl(VirtIODevice *vdev, VirtQueue *vq)
}
}
+static void virtio_scsi_handle_event(VirtIODevice *vdev, VirtQueue *vq)
+{
+}
+
static void virtio_scsi_command_complete(SCSIRequest *r, uint32_t status,
size_t resid)
{
@@ -609,7 +613,7 @@ VirtIODevice *virtio_scsi_init(DeviceState *dev, VirtIOSCSIConf *proxyconf)
s->ctrl_vq = virtio_add_queue(&s->vdev, VIRTIO_SCSI_VQ_SIZE,
virtio_scsi_handle_ctrl);
s->event_vq = virtio_add_queue(&s->vdev, VIRTIO_SCSI_VQ_SIZE,
- NULL);
+ virtio_scsi_handle_event);
for (i = 0; i < s->conf->num_queues; i++) {
s->cmd_vqs[i] = virtio_add_queue(&s->vdev, VIRTIO_SCSI_VQ_SIZE,
virtio_scsi_handle_cmd);