Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753676AbdLSTow (ORCPT ); Tue, 19 Dec 2017 14:44:52 -0500 Received: from mga01.intel.com ([192.55.52.88]:17651 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753189AbdLSTgw (ORCPT ); Tue, 19 Dec 2017 14:36:52 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.45,428,1508828400"; d="scan'208";a="4018590" From: Dongwon Kim To: linux-kernel@vger.kernel.org Cc: dri-devel@lists.freedesktop.org, xen-devel@lists.xenproject.org, mateuszx.potrola@intel.com, dongwon.kim@intel.com Subject: [RFC PATCH 33/60] hyper_dmabuf: error checking on the result of dma_buf_map_attachment Date: Tue, 19 Dec 2017 11:29:49 -0800 Message-Id: <1513711816-2618-33-git-send-email-dongwon.kim@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1513711816-2618-1-git-send-email-dongwon.kim@intel.com> References: <1513711816-2618-1-git-send-email-dongwon.kim@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 878 Lines: 28 From: Mateusz Polrola Added error checking on the result of function call, dma_buf_map_attachment Signed-off-by: Dongwon Kim --- drivers/xen/hyper_dmabuf/hyper_dmabuf_ioctl.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/xen/hyper_dmabuf/hyper_dmabuf_ioctl.c b/drivers/xen/hyper_dmabuf/hyper_dmabuf_ioctl.c index c0048d9..476c0d7 100644 --- a/drivers/xen/hyper_dmabuf/hyper_dmabuf_ioctl.c +++ b/drivers/xen/hyper_dmabuf/hyper_dmabuf_ioctl.c @@ -149,6 +149,11 @@ static int hyper_dmabuf_export_remote(struct file *filp, void *data) sgt = dma_buf_map_attachment(attachment, DMA_BIDIRECTIONAL); + if (IS_ERR(sgt)) { + dev_err(hyper_dmabuf_private.device, "Cannot map attachment\n"); + return PTR_ERR(sgt); + } + sgt_info = kcalloc(1, sizeof(*sgt_info), GFP_KERNEL); if(!sgt_info) { -- 2.7.4