In case we don't have a device for an active queue, just skip
processing the queue (same we do for inactive queues) and log
a guest bug.
Reported-by: Guenter Roeck <li...@roeck-us.net>
Signed-off-by: Gerd Hoffmann <kra...@redhat.com>
Tested-by: Guenter Roeck <li...@roeck-us.net>
Message-id: 20190821085319.13711-1-kra...@redhat.com
---
hw/usb/hcd-ehci.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/hw/usb/hcd-ehci.c b/hw/usb/hcd-ehci.c
index 9ca7b87a8001..56ab2f457f4c 100644
--- a/hw/usb/hcd-ehci.c
+++ b/hw/usb/hcd-ehci.c
@@ -1838,6 +1838,9 @@ static int ehci_state_fetchqtd(EHCIQueue *q)
ehci_set_state(q->ehci, q->async, EST_EXECUTING);
break;
}
+ } else if (q->dev == NULL) {
+ ehci_trace_guest_bug(q->ehci, "no device attached to queue");
+ ehci_set_state(q->ehci, q->async, EST_HORIZONTALQH);
} else {
p = ehci_alloc_packet(q);
p->qtdaddr = q->qtdaddr;
--
2.18.1
