From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:40401 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752643AbbLLUk7 (ORCPT ); Sat, 12 Dec 2015 15:40:59 -0500 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Arnd Bergmann , "Yan, Zheng" Subject: [PATCH 4.3 68/71] ceph: fix message length computation Date: Sat, 12 Dec 2015 12:06:32 -0800 Message-Id: <20151212200540.081712737@linuxfoundation.org> In-Reply-To: <20151212200536.761001328@linuxfoundation.org> References: <20151212200536.761001328@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Sender: stable-owner@vger.kernel.org List-ID: 4.3-stable review patch. If anyone has any objections, please let me know. ------------------ From: Arnd Bergmann commit 777d738a5e58ba3b6f3932ab1543ce93703f4873 upstream. create_request_message() computes the maximum length of a message, but uses the wrong type for the time stamp: sizeof(struct timespec) may be 8 or 16 depending on the architecture, while sizeof(struct ceph_timespec) is always 8, and that is what gets put into the message. Found while auditing the uses of timespec for y2038 problems. Fixes: b8e69066d8af ("ceph: include time stamp in every MDS request") Signed-off-by: Arnd Bergmann Signed-off-by: Yan, Zheng Signed-off-by: Greg Kroah-Hartman --- fs/ceph/mds_client.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/fs/ceph/mds_client.c +++ b/fs/ceph/mds_client.c @@ -1935,7 +1935,7 @@ static struct ceph_msg *create_request_m len = sizeof(*head) + pathlen1 + pathlen2 + 2*(1 + sizeof(u32) + sizeof(u64)) + - sizeof(struct timespec); + sizeof(struct ceph_timespec); /* calculate (max) length for cap releases */ len += sizeof(struct ceph_mds_request_release) *