lguest: Fix uninitialized members in example launcher

Thanks valgrind!

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

1 files changed, 6 insertions, 3 deletions

diff --git a/Documentation/lguest/lguest.c b/Documentation/lguest/lguest.c
index 42008395534..9b0e322118b 100644
--- a/Documentation/lguest/lguest.c
+++ b/Documentation/lguest/lguest.c
@@ -1040,6 +1040,11 @@ static void add_virtqueue(struct device *dev, unsigned int num_descs,
                 / getpagesize();
         p = get_pages(pages);
 
+        /* Initialize the virtqueue */
+        vq->next = NULL;
+        vq->last_avail_idx = 0;
+        vq->dev = dev;
+
         /* Initialize the configuration. */
         vq->config.num = num_descs;
         vq->config.irq = devices.next_irq++;
@@ -1057,9 +1062,6 @@ static void add_virtqueue(struct device *dev, unsigned int num_descs,
         for (i = &dev->vq; *i; i = &(*i)->next);
         *i = vq;
 
-        /* Link virtqueue back to device. */
-        vq->dev = dev;
-
         /* Set the routine to call when the Guest does something to this
          * virtqueue. */
         vq->handle_output = handle_output;
@@ -1093,6 +1095,7 @@ static struct device *new_device(const char *name, u16 type, int fd,
         dev->desc = new_dev_desc(type);
         dev->handle_input = handle_input;
         dev->name = name;
+        dev->vq = NULL;
         return dev;
 }