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 1D36CC4332E for ; Mon, 15 Mar 2021 14:14:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EEFDC64EEB for ; Mon, 15 Mar 2021 14:14:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231397AbhCOOOT (ORCPT ); Mon, 15 Mar 2021 10:14:19 -0400 Received: from mail.kernel.org ([198.145.29.99]:37820 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232603AbhCON7F (ORCPT ); Mon, 15 Mar 2021 09:59:05 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id D70A364DAD; Mon, 15 Mar 2021 13:58:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1615816736; bh=hD1F8VjWGCUZ++i9TL2oRH1ZOXXmngzERZal1ulIcoU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=H29GaNgsWm0cS8qWnmyJyY3m3BGTmSD3lLRqYQ5szwYg7P+7lMDCWTAuGtOPF8b0H B3myglPQe3IjIsUQnJHIIv+9EzNhymupsNPc924ADJC4FVsp6OO/Ze+NwceT6uw4sR R2/gQMnD6gLWrbbLJNWC1Cz8OftxYWcQpgxxxFIs= From: gregkh@linuxfoundation.org To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Eric Farman , Heiko Carstens Subject: [PATCH 4.19 036/120] s390/cio: return -EFAULT if copy_to_user() fails Date: Mon, 15 Mar 2021 14:56:27 +0100 Message-Id: <20210315135721.177953936@linuxfoundation.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210315135720.002213995@linuxfoundation.org> References: <20210315135720.002213995@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 @@ -383,7 +383,7 @@ 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: {