Merge tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu into...

virtio: regression fix

A regression was introduced in the last pull request. Fix it up.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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* tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu:
  net/vhost-net: do not assert on null pointer return from tap_get_vhost_net()

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

diff --git a/hw/net/vhost_net.c b/hw/net/vhost_net.c
index 6db23ca323047a09d89493530033f015caf47fcb..6b958d6363e56a0a9474c57919ac914fd2394f51 100644 (file)
--- a/hw/net/vhost_net.c
+++ b/hw/net/vhost_net.c
@@ -507,7 +507,12 @@ VHostNetState *get_vhost_net(NetClientState *nc)
     switch (nc->info->type) {
     case NET_CLIENT_DRIVER_TAP:
         vhost_net = tap_get_vhost_net(nc);
-        assert(vhost_net);
+        /*
+         * tap_get_vhost_net() can return NULL if a tap net-device backend is
+         * created with 'vhost=off' option, 'vhostforce=off' or no vhost or
+         * vhostforce or vhostfd options at all. Please see net_init_tap_one().
+         * Hence, we omit the assertion here.
+         */
         break;
 #ifdef CONFIG_VHOST_NET_USER
     case NET_CLIENT_DRIVER_VHOST_USER: