From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:51262 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751451AbeDYKiC (ORCPT ); Wed, 25 Apr 2018 06:38:02 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Gerd Hoffmann , Alex Williamson , Zhenyu Wang Subject: [PATCH 4.14 007/183] drm/i915/gvt: throw error on unhandled vfio ioctls Date: Wed, 25 Apr 2018 12:33:47 +0200 Message-Id: <20180425103242.903050776@linuxfoundation.org> In-Reply-To: <20180425103242.532713678@linuxfoundation.org> References: <20180425103242.532713678@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: stable-owner@vger.kernel.org List-ID: 4.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: Gerd Hoffmann commit 9f591ae60e1be026901398ef99eede91237aa3a1 upstream. On unknown/unhandled ioctls the driver should return an error, so userspace knows it tried to use something unsupported. Cc: stable@vger.kernel.org Signed-off-by: Gerd Hoffmann Reviewed-by: Alex Williamson Signed-off-by: Zhenyu Wang Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/i915/gvt/kvmgt.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/gpu/drm/i915/gvt/kvmgt.c +++ b/drivers/gpu/drm/i915/gvt/kvmgt.c @@ -1153,7 +1153,7 @@ static long intel_vgpu_ioctl(struct mdev return 0; } - return 0; + return -ENOTTY; } static ssize_t