From patchwork Tue Feb 5 09:08:19 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dan Carpenter X-Patchwork-Id: 10797125 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id EA2D2922 for ; Tue, 5 Feb 2019 09:09:14 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D75BB291C1 for ; Tue, 5 Feb 2019 09:09:14 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id CB7E52A95F; Tue, 5 Feb 2019 09:09:14 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED,UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id D488A291C1 for ; Tue, 5 Feb 2019 09:09:13 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 8BDCF6E66D; Tue, 5 Feb 2019 09:09:11 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from aserp2130.oracle.com (aserp2130.oracle.com [141.146.126.79]) by gabe.freedesktop.org (Postfix) with ESMTPS id 6CEE26E118; Tue, 5 Feb 2019 09:09:09 +0000 (UTC) Received: from pps.filterd (aserp2130.oracle.com [127.0.0.1]) by aserp2130.oracle.com (8.16.0.27/8.16.0.27) with SMTP id x158x6oG120179; Tue, 5 Feb 2019 09:08:51 GMT Received: from aserv0022.oracle.com (aserv0022.oracle.com [141.146.126.234]) by aserp2130.oracle.com with ESMTP id 2qd97esmnp-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 05 Feb 2019 09:08:51 +0000 Received: from aserv0122.oracle.com (aserv0122.oracle.com [141.146.126.236]) by aserv0022.oracle.com (8.14.4/8.14.4) with ESMTP id x1598jUp024138 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 5 Feb 2019 09:08:45 GMT Received: from abhmp0010.oracle.com (abhmp0010.oracle.com [141.146.116.16]) by aserv0122.oracle.com (8.14.4/8.14.4) with ESMTP id x1598gqv008534; Tue, 5 Feb 2019 09:08:42 GMT Received: from kadam (/197.157.0.31) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Tue, 05 Feb 2019 09:08:41 +0000 Date: Tue, 5 Feb 2019 12:08:19 +0300 From: Dan Carpenter To: Lucas Stach Subject: [PATCH] drm/etnaviv: potential NULL dereference Message-ID: <20190205090816.GA20168@kadam> MIME-Version: 1.0 Content-Disposition: inline X-Mailer: git-send-email haha only kidding User-Agent: Mutt/1.9.4 (2018-02-28) X-Proofpoint-Virus-Version: vendor=nai engine=5900 definitions=9157 signatures=668682 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1011 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1902050072 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: David Airlie , kernel-janitors@vger.kernel.org, etnaviv@lists.freedesktop.org, dri-devel@lists.freedesktop.org, Russell King Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP The etnaviv_gem_prime_get_sg_table() is supposed to return error pointers. Otherwise it can lead to a NULL dereference when it's called from drm_gem_map_dma_buf(). Fixes: 5f4a4a73f437 ("drm/etnaviv: fix gem_prime_get_sg_table to return new SG table") Signed-off-by: Dan Carpenter Reviewed-by: Christian Gmeiner --- drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c b/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c index 0566171f8df2..f21529e635e3 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c @@ -15,7 +15,7 @@ struct sg_table *etnaviv_gem_prime_get_sg_table(struct drm_gem_object *obj) int npages = obj->size >> PAGE_SHIFT; if (WARN_ON(!etnaviv_obj->pages)) /* should have already pinned! */ - return NULL; + return ERR_PTR(-EINVAL); return drm_prime_pages_to_sg(etnaviv_obj->pages, npages); }