From patchwork Thu Aug 22 09:36:53 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gerd Hoffmann X-Patchwork-Id: 11108963 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id DFFCB1399 for ; Thu, 22 Aug 2019 09:37:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C0FA623400 for ; Thu, 22 Aug 2019 09:37:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730896AbfHVJg5 (ORCPT ); Thu, 22 Aug 2019 05:36:57 -0400 Received: from mx1.redhat.com ([209.132.183.28]:55174 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726738AbfHVJg5 (ORCPT ); Thu, 22 Aug 2019 05:36:57 -0400 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 7069F10C6967; Thu, 22 Aug 2019 09:36:57 +0000 (UTC) Received: from sirius.home.kraxel.org (ovpn-116-60.ams2.redhat.com [10.36.116.60]) by smtp.corp.redhat.com (Postfix) with ESMTP id 0329060126; Thu, 22 Aug 2019 09:36:55 +0000 (UTC) Received: by sirius.home.kraxel.org (Postfix, from userid 1000) id 524599AF5; Thu, 22 Aug 2019 11:36:54 +0200 (CEST) From: Gerd Hoffmann To: dri-devel@lists.freedesktop.org Cc: laurent.pinchart@ideasonboard.com, daniel@ffwll.ch, Gerd Hoffmann , Sumit Semwal , linux-media@vger.kernel.org (open list:DMA BUFFER SHARING FRAMEWORK), linaro-mm-sig@lists.linaro.org (moderated list:DMA BUFFER SHARING FRAMEWORK), linux-kernel@vger.kernel.org (open list) Subject: [PATCH 2/3] udmabuf: check that __pad is zero Date: Thu, 22 Aug 2019 11:36:53 +0200 Message-Id: <20190822093654.23752-3-kraxel@redhat.com> In-Reply-To: <20190822093654.23752-1-kraxel@redhat.com> References: <20190822093654.23752-1-kraxel@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.6.2 (mx1.redhat.com [10.5.110.65]); Thu, 22 Aug 2019 09:36:57 +0000 (UTC) Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Reported-by: Yann Droneaud Signed-off-by: Gerd Hoffmann --- drivers/dma-buf/udmabuf.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/dma-buf/udmabuf.c b/drivers/dma-buf/udmabuf.c index 9635897458a0..6c3ec8fcef01 100644 --- a/drivers/dma-buf/udmabuf.c +++ b/drivers/dma-buf/udmabuf.c @@ -137,6 +137,8 @@ static long udmabuf_create(const struct udmabuf_create_list *head, pglimit = (size_limit_mb * 1024 * 1024) >> PAGE_SHIFT; for (i = 0; i < head->count; i++) { + if (list[i].__pad) + goto err; if (!IS_ALIGNED(list[i].offset, PAGE_SIZE)) goto err; if (!IS_ALIGNED(list[i].size, PAGE_SIZE))