This ioctl function is supposed to return a negative error code or zero on success. copy_to_user() returns zero or the number of bytes remaining to be copied. Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> diff --git a/drivers/vfio/vfio.c b/drivers/vfio/vfio.c index 457acf3..1aa373f 100644 --- a/drivers/vfio/vfio.c +++ b/drivers/vfio/vfio.c @@ -1159,6 +1159,8 @@ static long vfio_group_fops_unl_ioctl(struct file *filep, status.flags |= VFIO_GROUP_FLAGS_CONTAINER_SET; ret = copy_to_user((void __user *)arg, &status, minsz); + if (ret) + ret = -EFAULT; break; } -- To unsubscribe from this list: send the line "unsubscribe kernel-janitors" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
