Hello,

On 6/26/23 14:30, Michael S. Tsirkin wrote:
From: Ani Sinha <anisi...@redhat.com>

An assertion was missing for tap vhost backends that enforces a non-null
reference from get_vhost_net(). Both vhost-net-user and vhost-net-vdpa
enforces this. Enforce the same for tap. Unit tests pass with this change.

Signed-off-by: Ani Sinha <anisi...@redhat.com>
Message-Id: <20230619041501.111655-1-anisi...@redhat.com>
Reviewed-by: Michael S. Tsirkin <m...@redhat.com>
Signed-off-by: Michael S. Tsirkin <m...@redhat.com>
Reviewed-by: Laurent Vivier <lviv...@redhat.com>
---
  hw/net/vhost_net.c | 1 +
  1 file changed, 1 insertion(+)

diff --git a/hw/net/vhost_net.c b/hw/net/vhost_net.c
index c4eecc6f36..6db23ca323 100644
--- a/hw/net/vhost_net.c
+++ b/hw/net/vhost_net.c
@@ -507,6 +507,7 @@ 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);
          break;
  #ifdef CONFIG_VHOST_NET_USER
      case NET_CLIENT_DRIVER_VHOST_USER:

A system of mine without vhost_net (old host kernel) is reaching this assert
and works perfectly fine without. Should it be considered as a regression ?

Thanks,

C.


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