[PATCH] virtio-input: fix memory leak in virtio_input_device_unrealize()

[pannengyuan]

From: PanNengyuan <address@hidden>

vdev->vq[i] is forgot to cleanup in
virtio_input_device_unrealize, the memory leak stack is as bellow:

Direct leak of 3584 byte(s) in 1 object(s) allocated from:
    #0 0x7f84a49f6560 in calloc (/usr/lib64/libasan.so.3+0xc7560)
    #1 0x7f84a3b3e015 in g_malloc0 (/usr/lib64/libglib-2.0.so.0+0x50015)
    #2 0x559c0f0b33e7 in virtio_add_queue 
/mnt/sdb/qemu-4.2.0-rc0/hw/virtio/virtio.c:2327
    #3 0x559c0f205c24 in virtio_input_device_realize 
/mnt/sdb/qemu-4.2.0-rc0/hw/input/virtio-input.c:262
    #4 0x559c0f0b06a7 in virtio_device_realize 
/mnt/sdb/qemu-4.2.0-rc0/hw/virtio/virtio.c:3504
    #5 0x559c0f1ba031 in device_set_realized  
/mnt/sdb/qemu-4.2.0-rc0/hw/core/qdev.c:876
    #6 0x559c0f32cedd in property_set_bool 
/mnt/sdb/qemu-4.2.0-rc0/qom/object.c:2080
    #7 0x559c0f3314ee in object_property_set_qobject 
/mnt/sdb/qemu-4.2.0-rc0/qom/qom-qobject.c:26

Direct leak of 3584 byte(s) in 1 object(s) allocated from:
    #0 0x7f84a49f6560 in calloc (/usr/lib64/libasan.so.3+0xc7560)
    #1 0x7f84a3b3e015 in g_malloc0 (/usr/lib64/libglib-2.0.so.0+0x50015)
    #2 0x559c0f0b33e7 in virtio_add_queue 
/mnt/sdb/qemu-4.2.0-rc0/hw/virtio/virtio.c:2327
    #3 0x559c0f205c3f in virtio_input_device_realize 
/mnt/sdb/qemu-4.2.0-rc0/hw/input/virtio-input.c:263
    #4 0x559c0f0b06a7 in virtio_device_realize 
/mnt/sdb/qemu-4.2.0-rc0/hw/virtio/virtio.c:3504
    #5 0x559c0f1ba031 in device_set_realized 
/mnt/sdb/qemu-4.2.0-rc0/hw/core/qdev.c:876
    #6 0x559c0f32cedd in property_set_bool 
/mnt/sdb/qemu-4.2.0-rc0/qom/object.c:2080
    #7 0x559c0f3314ee in object_property_set_qobject 
/mnt/sdb/qemu-4.2.0-rc0/qom/qom-qobject.c:26

Reported-by: Euler Robot <address@hidden>
Signed-off-by: PanNengyuan <address@hidden>
---
 hw/input/virtio-input.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/hw/input/virtio-input.c b/hw/input/virtio-input.c
index 51617a5..da94da4 100644
--- a/hw/input/virtio-input.c
+++ b/hw/input/virtio-input.c
@@ -288,6 +288,9 @@ static void virtio_input_device_unrealize(DeviceState *dev, 
Error **errp)
             return;
         }
     }
+    
+    virtio_del_queue(vdev, 0);
+    virtio_del_queue(vdev, 1);
     virtio_cleanup(vdev);
 }
 
-- 
2.7.2.windows.1