net: skip virtio-net config of deleted nic's peers

https://bugzilla.redhat.com/show_bug.cgi?id=1373816 qemu core dump happens during repetitive unpug-plug with multiple queues and Windows RSS-capable guest. If back-end delete requested during virtio-net device initialization, driver still can try configure the device for multiple queues. The virtio-net device is expected to be removed as soon as the initialization is done. Signed-off-by: Yuri Benditovich <[email protected]> Signed-off-by: Jason Wang <[email protected]>
NarutoGit · Nov 15, 2016 · 68b5f31 · 68b5f31
1 parent 682df58
commit 68b5f31
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c
@@ -508,6 +508,10 @@ static void virtio_net_set_queues(VirtIONet *n)
     int i;
     int r;
 
+    if (n->nic->peer_deleted) {
+        return;
+    }
+
     for (i = 0; i < n->max_queues; i++) {
         if (i < n->curr_queues) {
             r = peer_attach(n, i);