[PATCH] virtio-gpu-rutabaga: Add empty interface to fix arm64 crash

[Cong Liu]

Add an empty element to the interfaces array, which is consistent with
the behavior of other devices in qemu and fixes the crash on arm64.

0  0x0000fffff5c18550 in  () at /usr/lib64/libc.so.6
1  0x0000fffff6c9cd6c in g_strdup () at /usr/lib64/libglib-2.0.so.0
2  0x0000aaaaab4945d8 in g_strdup_inline (str=<optimized out>) at 
/usr/include/glib-2.0/glib/gstrfuncs.h:321
3  type_new (info=info@entry=0xaaaaabc1b2c8 <virtio_gpu_rutabaga_pci_info>) at 
../qom/object.c:133
4  0x0000aaaaab494f14 in type_register_internal (info=0xaaaaabc1b2c8 
<virtio_gpu_rutabaga_pci_info>) at ../qom/object.c:143
5  type_register (info=0xaaaaabc1b2c8 <virtio_gpu_rutabaga_pci_info>) at 
../qom/object.c:152
6  type_register_static (info=0xaaaaabc1b2c8 <virtio_gpu_rutabaga_pci_info>) at 
../qom/object.c:157
7  type_register_static_array (infos=<optimized out>, nr_infos=<optimized out>) 
at ../qom/object.c:165
8  0x0000aaaaab6147e8 in module_call_init (type=type@entry=MODULE_INIT_QOM) at 
../util/module.c:109
9  0x0000aaaaab10a0ec in qemu_init_subsystems () at ../system/runstate.c:817
10 0x0000aaaaab10d334 in qemu_init (argc=13, argv=0xfffffffff198) at 
../system/vl.c:2760
11 0x0000aaaaaae4da6c in main (argc=<optimized out>, argv=<optimized out>) at 
../system/main.c:47

Signed-off-by: Cong Liu <liucong2@kylinos.cn>
Reviewed-by: Gurchetan Singh <gurchetansingh@chromium.org>
---
 hw/display/virtio-gpu-pci-rutabaga.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/hw/display/virtio-gpu-pci-rutabaga.c 
b/hw/display/virtio-gpu-pci-rutabaga.c
index c96729e19834..abbb898c65dc 100644
--- a/hw/display/virtio-gpu-pci-rutabaga.c
+++ b/hw/display/virtio-gpu-pci-rutabaga.c
@@ -36,6 +36,7 @@ static const TypeInfo virtio_gpu_rutabaga_pci_info[] = {
         .instance_init = virtio_gpu_rutabaga_initfn,
         .interfaces = (InterfaceInfo[]) {
             { INTERFACE_CONVENTIONAL_PCI_DEVICE },
+            { },
         }
     },
 };
-- 
2.34.1