Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934800AbdCJJX6 (ORCPT ); Fri, 10 Mar 2017 04:23:58 -0500 Received: from mail.linuxfoundation.org ([140.211.169.12]:38052 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934108AbdCJJXy (ORCPT ); Fri, 10 Mar 2017 04:23:54 -0500 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Bjorn Andersson Subject: [PATCH 4.9 119/153] remoteproc: qcom: mdt_loader: Dont overwrite firmware object Date: Fri, 10 Mar 2017 10:09:12 +0100 Message-Id: <20170310083954.146659219@linuxfoundation.org> X-Mailer: git-send-email 2.12.0 In-Reply-To: <20170310083947.108106897@linuxfoundation.org> References: <20170310083947.108106897@linuxfoundation.org> User-Agent: quilt/0.65 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1574 Lines: 51 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Bjorn Andersson commit 3e8b571a9a0881ba3381ca0915995696da145ab8 upstream. The "fw" firmware object is passed from the remoteproc core and should not be overwritten, as that results in leaked buffers and a double free of the the last firmware object. Fixes: 051fb70fd4ea ("remoteproc: qcom: Driver for the self-authenticating Hexagon v5") Signed-off-by: Bjorn Andersson Signed-off-by: Greg Kroah-Hartman --- drivers/remoteproc/qcom_mdt_loader.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) --- a/drivers/remoteproc/qcom_mdt_loader.c +++ b/drivers/remoteproc/qcom_mdt_loader.c @@ -115,6 +115,7 @@ int qcom_mdt_load(struct rproc *rproc, const struct elf32_phdr *phdrs; const struct elf32_phdr *phdr; const struct elf32_hdr *ehdr; + const struct firmware *seg_fw; size_t fw_name_len; char *fw_name; void *ptr; @@ -153,16 +154,16 @@ int qcom_mdt_load(struct rproc *rproc, if (phdr->p_filesz) { sprintf(fw_name + fw_name_len - 3, "b%02d", i); - ret = request_firmware(&fw, fw_name, &rproc->dev); + ret = request_firmware(&seg_fw, fw_name, &rproc->dev); if (ret) { dev_err(&rproc->dev, "failed to load %s\n", fw_name); break; } - memcpy(ptr, fw->data, fw->size); + memcpy(ptr, seg_fw->data, seg_fw->size); - release_firmware(fw); + release_firmware(seg_fw); } if (phdr->p_memsz > phdr->p_filesz)