From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6F58DC4332B for ; Mon, 15 Mar 2021 14:11:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3EB3164EEC for ; Mon, 15 Mar 2021 14:11:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235837AbhCOOLV (ORCPT ); Mon, 15 Mar 2021 10:11:21 -0400 Received: from mail.kernel.org ([198.145.29.99]:36788 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232194AbhCON6O (ORCPT ); Mon, 15 Mar 2021 09:58:14 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id E713264EF9; Mon, 15 Mar 2021 13:58:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1615816694; bh=g4FWKpiTGJ5DqyXsHNZ88LoSMSKXTrMgw7oNdrsNPvM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=N9fo1wyc29JGD6+zjXiow73WM7rsPoYCaX690/LcY4JXnYRRFXVuxcD9VyDWP+eBP Jg83pP5JMf43GTGxXErVJRWsBLvrrYw8NEhfUPjWPAT/DapwSkToFhtEWhNyhm+vq0 FM4CV8ekcg+cC5wXtvdXLsYtwfFHRYPDx8EVW9Sk= From: gregkh@linuxfoundation.org To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Eric Farman , Heiko Carstens Subject: [PATCH 5.4 051/168] s390/cio: return -EFAULT if copy_to_user() fails Date: Mon, 15 Mar 2021 14:54:43 +0100 Message-Id: <20210315135552.035113627@linuxfoundation.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210315135550.333963635@linuxfoundation.org> References: <20210315135550.333963635@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Greg Kroah-Hartman From: Eric Farman commit d9c48a948d29bcb22f4fe61a81b718ef6de561a0 upstream. Fixes: 120e214e504f ("vfio: ccw: realize VFIO_DEVICE_G(S)ET_IRQ_INFO ioctls") Signed-off-by: Eric Farman Signed-off-by: Heiko Carstens Signed-off-by: Greg Kroah-Hartman --- drivers/s390/cio/vfio_ccw_ops.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/s390/cio/vfio_ccw_ops.c +++ b/drivers/s390/cio/vfio_ccw_ops.c @@ -545,7 +545,7 @@ static ssize_t vfio_ccw_mdev_ioctl(struc if (info.count == -1) return -EINVAL; - return copy_to_user((void __user *)arg, &info, minsz); + return copy_to_user((void __user *)arg, &info, minsz) ? -EFAULT : 0; } case VFIO_DEVICE_SET_IRQS: {