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=-8.4 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY, USER_AGENT_SANE_1 autolearn=ham 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 E1D6CC3A59F for ; Mon, 26 Aug 2019 13:20:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B4F9B206E0 for ; Mon, 26 Aug 2019 13:20:33 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="Kb4WesHD" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731886AbfHZNUc (ORCPT ); Mon, 26 Aug 2019 09:20:32 -0400 Received: from userp2120.oracle.com ([156.151.31.85]:50174 "EHLO userp2120.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726953AbfHZNUc (ORCPT ); Mon, 26 Aug 2019 09:20:32 -0400 Received: from pps.filterd (userp2120.oracle.com [127.0.0.1]) by userp2120.oracle.com (8.16.0.27/8.16.0.27) with SMTP id x7QDImEL124490; Mon, 26 Aug 2019 13:20:24 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=date : from : to : cc : subject : message-id : mime-version : content-type; s=corp-2019-08-05; bh=jg8OGb+FrdnhPvXGD0oYUUIjDrZd0OA9UveLV21eQdk=; b=Kb4WesHD3XEj9rSET3ZPcZVa7XfRqOM4ACy0Y3HMavSmOZJK91GpQi5yHGnoroCtdm1C beH2YlBok+TCRBGXIAnroPkgj6Eoc+iUTmyv1ByihC2s3tuHy602d8CXDOfRuSeUsJgo TPGHCt1I93KNKppj7iyXaRsn3RpE+lFNa9xGysAl0hEIp8ulNrA4bl397RGWHGCq8F6n ldxmFpjFBxlgL55+tbltMOnzU8V1GCVb9WyWIsCYyrG54PcRWC6Wrl5qXWZmbAfkWBYk Vcnv05arZfK+luTelPmrwN8n7PoroMsnvxBNYrWnemDKLB8bLDJoGoF1P1Xt0A05r+F8 XA== Received: from aserp3030.oracle.com (aserp3030.oracle.com [141.146.126.71]) by userp2120.oracle.com with ESMTP id 2ujwvq8xje-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 26 Aug 2019 13:20:24 +0000 Received: from pps.filterd (aserp3030.oracle.com [127.0.0.1]) by aserp3030.oracle.com (8.16.0.27/8.16.0.27) with SMTP id x7QDHojf004907; Mon, 26 Aug 2019 13:20:23 GMT Received: from aserv0121.oracle.com (aserv0121.oracle.com [141.146.126.235]) by aserp3030.oracle.com with ESMTP id 2ujw6uuqd5-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 26 Aug 2019 13:20:23 +0000 Received: from abhmp0017.oracle.com (abhmp0017.oracle.com [141.146.116.23]) by aserv0121.oracle.com (8.14.4/8.13.8) with ESMTP id x7QDKMoG024152; Mon, 26 Aug 2019 13:20:22 GMT Received: from mwanda (/41.57.98.10) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Mon, 26 Aug 2019 06:20:21 -0700 Date: Mon, 26 Aug 2019 16:20:12 +0300 From: Dan Carpenter To: Alex Deucher Cc: Christian =?iso-8859-1?Q?K=F6nig?= , "David (ChunMing) Zhou" , David Airlie , Daniel Vetter , Kevin Wang , Huang Rui , Kenneth Feng , Evan Quan , amd-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org Subject: [PATCH] drm/amd/powerplay: Fix an off by one in navi10_get_smu_msg_index() Message-ID: <20190826132012.GB6840@mwanda> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-Mailer: git-send-email haha only kidding User-Agent: Mutt/1.10.1 (2018-07-13) X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9360 signatures=668684 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1906280000 definitions=main-1908260145 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9360 signatures=668684 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=8.0.1-1906280000 definitions=main-1908260145 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The navi10_message_map[] array has SMU_MSG_MAX_COUNT elements so the ">" has to be changed to ">=" to prevent reading one element beyond the end of the array. Signed-off-by: Dan Carpenter --- drivers/gpu/drm/amd/powerplay/navi10_ppt.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/powerplay/navi10_ppt.c b/drivers/gpu/drm/amd/powerplay/navi10_ppt.c index d7e25f5113f1..fbecd25f150f 100644 --- a/drivers/gpu/drm/amd/powerplay/navi10_ppt.c +++ b/drivers/gpu/drm/amd/powerplay/navi10_ppt.c @@ -213,7 +213,7 @@ static int navi10_get_smu_msg_index(struct smu_context *smc, uint32_t index) { struct smu_11_0_cmn2aisc_mapping mapping; - if (index > SMU_MSG_MAX_COUNT) + if (index >= SMU_MSG_MAX_COUNT) return -EINVAL; mapping = navi10_message_map[index]; -- 2.20.1