[PATCH net] vhost: Use kzalloc() to allocate vhost_msg_node

[Kevin Easton]

The struct vhost_msg within struct vhost_msg_node is copied to userspace,
so it should be allocated with kzalloc() to ensure all structure padding
is zeroed.

Signed-off-by: Kevin Easton <kevin@xxxxxxxxxxx>
Reported-by: syzbot+87cfa083e727a224754b@xxxxxxxxxxxxxxxxxxxxxxxxx
---
 drivers/vhost/vhost.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index f3bd8e9..1b84dcff 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -2339,7 +2339,7 @@ EXPORT_SYMBOL_GPL(vhost_disable_notify);
 /* Create a new message. */
 struct vhost_msg_node *vhost_new_msg(struct vhost_virtqueue *vq, int type)
 {
-	struct vhost_msg_node *node = kmalloc(sizeof *node, GFP_KERNEL);
+	struct vhost_msg_node *node = kzalloc(sizeof *node, GFP_KERNEL);
 	if (!node)
 		return NULL;
 	node->vq = vq;
-- 
2.8.1