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=-19.4 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, URIBL_BLOCKED,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 32A69C11F70 for ; Mon, 12 Jul 2021 08:39:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1294960FE7 for ; Mon, 12 Jul 2021 08:39:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1378602AbhGLIlA (ORCPT ); Mon, 12 Jul 2021 04:41:00 -0400 Received: from mail.kernel.org ([198.145.29.99]:36652 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1350600AbhGLHvL (ORCPT ); Mon, 12 Jul 2021 03:51:11 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id DE4DB61C27; Mon, 12 Jul 2021 07:46:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1626075985; bh=WBqR+ffR0R5GHptgZ3/zjCvkFUPazoiR9oqfXZyyTKU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=y/L0pjO5PalWyVNb5XNA1uqHzHOFEgVPY7uu87/eLLyO8pHx9cdKeFHXovmZdc+0P U7KKIzHjQNppXmVw9W0NPit0s4mjaGmaBbrL0DK4hkgcCw/ECgyuTkY+Xgh3D67MkO ecFE41Oh2jgTrTSzMhxtUzEELX+Z4+LzjHy651OQ= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Colin Ian King , Gerd Hoffmann , Sasha Levin Subject: [PATCH 5.13 449/800] drm: qxl: ensure surf.data is ininitialized Date: Mon, 12 Jul 2021 08:07:52 +0200 Message-Id: <20210712061014.876665332@linuxfoundation.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210712060912.995381202@linuxfoundation.org> References: <20210712060912.995381202@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: Colin Ian King [ Upstream commit fbbf23ddb2a1cc0c12c9f78237d1561c24006f50 ] The object surf is not fully initialized and the uninitialized field surf.data is being copied by the call to qxl_bo_create via the call to qxl_gem_object_create. Set surf.data to zero to ensure garbage data from the stack is not being copied. Addresses-Coverity: ("Uninitialized scalar variable") Fixes: f64122c1f6ad ("drm: add new QXL driver. (v1.4)") Signed-off-by: Colin Ian King Link: http://patchwork.freedesktop.org/patch/msgid/20210608161313.161922-1-colin.king@canonical.com Signed-off-by: Gerd Hoffmann Signed-off-by: Sasha Levin --- drivers/gpu/drm/qxl/qxl_dumb.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/qxl/qxl_dumb.c b/drivers/gpu/drm/qxl/qxl_dumb.c index 48a58ba1db96..686485b19d0f 100644 --- a/drivers/gpu/drm/qxl/qxl_dumb.c +++ b/drivers/gpu/drm/qxl/qxl_dumb.c @@ -58,6 +58,8 @@ int qxl_mode_dumb_create(struct drm_file *file_priv, surf.height = args->height; surf.stride = pitch; surf.format = format; + surf.data = 0; + r = qxl_gem_object_create_with_handle(qdev, file_priv, QXL_GEM_DOMAIN_CPU, args->size, &surf, &qobj, -- 2.30.2