diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
index 6949b704166d..38d9c184082d 100644
--- a/drivers/vhost/net.c
+++ b/drivers/vhost/net.c
@@ -1777,7 +1777,8 @@ static long vhost_net_ioctl(struct file *f, unsigned int ioctl,
 			return -EFAULT;
 
 		/* Zero the trailing space provided by user-space, if any */
-		if (clear_user(argp, size_mul(count - copied, sizeof(u64))))
+		if (clear_user(argp + size_mul(copied, sizeof(u64)),
+			       size_mul(count - copied, sizeof(u64))))
 			return -EFAULT;
 		return 0;
 	case VHOST_SET_FEATURES_ARRAY: