From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-2707851-1524408586-2-10276181831472341490 X-Sieve: CMU Sieve 3.0 X-Spam-known-sender: no X-Spam-score: 0.0 X-Spam-hits: BAYES_00 -1.9, HEADER_FROM_DIFFERENT_DOMAINS 0.25, MAILING_LIST_MULTI -1, ME_NOAUTH 0.01, RCVD_IN_DNSWL_HI -5, LANGUAGES enroda, BAYES_USED global, SA_VERSION 3.4.0 X-Spam-source: IP='209.132.180.67', Host='vger.kernel.org', Country='US', FromHeader='org', MailFrom='org' X-Spam-charsets: plain='UTF-8' X-Resolved-to: greg@kroah.com X-Delivered-to: greg@kroah.com X-Mail-from: stable-owner@vger.kernel.org ARC-Seal: i=1; a=rsa-sha256; cv=none; d=messagingengine.com; s=fm2; t= 1524408586; b=qugAclS0u4eZwLToELenoo7G2sQysUovj6zmOqH1rJTj0yu6nF kz5rgl11XRNO2ytfFmR2Ym2134KMVOKXxKjZkP75rroyXYC3XwP6BX6LAab4G8Cr ATrvVXNuZtadyTzRad83p5tv1YAYq9juMGAn9z1F920xgyocLCZGp9LOUjFjv3RI iiSQBSVTiiIcHRn0zUq0Fhj9cSSw82s+WyZrfdfqsRiBCEAdf5grbYBnt+EOC3u3 oFlUg9eSK8ZRrMffHbxEJaMiAkcupqWLSok+gRBdI9vrkkwqZ/zD83Z+jPzRwAAk ciL3Bi9A90K0yMSXQK94HNkocdzjOKM2DBNw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=from:to:cc:subject:date:message-id :in-reply-to:references:mime-version:content-type:sender :list-id; s=fm2; t=1524408586; bh=GLHU7wMnj27i068U9c8uUZsH/5EhJw Ru04vtIqFgrHo=; b=iX2G3doaN+m7NuywryGojkpGvKQUvfrLCejqL4PCJ/2QfA TNFagqnmXAepbSNcSQtIolCrqq303QKvKfiwgLAG28q6rBBaOg5gYJhjahCWQKLp UVYQwOCRamOWN0Wlj3u2KZSolCmm7me6KQ/y5330V6t6j6ltnIbmIJLleglnj85d dx/Y2ZxceOPti8nE/NiqolH0ZmpTKZBGDVfSxxUSQp8IfdjSIWtSk0XuTaGdjKfs 1WSnmVTU5gCpIlQnXdUy+ZLwhIDnOrLq6oZZ7AZYDPBZm3GrPQKVkE+tVT8DX2GS D1H6baktJExrdktf+oKIZavFqSVFBvq9adnkBi0w== ARC-Authentication-Results: i=1; mx5.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=linuxfoundation.org; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-cm=none score=0; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=linuxfoundation.org header.result=pass header_is_org_domain=yes; x-vs=clean score=-100 state=0 Authentication-Results: mx5.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=linuxfoundation.org; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-cm=none score=0; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=linuxfoundation.org header.result=pass header_is_org_domain=yes; x-vs=clean score=-100 state=0 X-ME-VSCategory: clean X-CM-Envelope: MS4wfEtkfy8mLl1d969mQQ/gzOU18Wsckx7NXvgYGP0FBzoCihVe3zkAkidJF1jf2E1KgUB1wcK1P53/+bizgGL0ukKor4IcLKWjULP4fdz2gnypt0otfm27 24Sge7fAVmHXE5wou+ppywk6LDciRZGChC2uxT8oWqpQW5hpjeUOEEd3MObyqCEwTNXvfoU5M4B7PCZ89G4KozFBh6v7JbSMQ4bSp04OYDCOo29/lsYKZ0lz X-CM-Analysis: v=2.3 cv=NPP7BXyg c=1 sm=1 tr=0 a=UK1r566ZdBxH71SXbqIOeA==:117 a=UK1r566ZdBxH71SXbqIOeA==:17 a=IkcTkHD0fZMA:10 a=Kd1tUaAdevIA:10 a=drOt6m5kAAAA:8 a=VwQbUJbxAAAA:8 a=ag1SF4gXAAAA:8 a=2mOOifH8u5EECxIMPxYA:9 a=5bir02ALjLtcsYgS:21 a=0mWPGmnHVDgINNCZ:21 a=QEXdDO2ut3YA:10 a=RMMjzBEyIzXRtoq5n5K6:22 a=AjGcO6oz07-iQ99wixmX:22 a=Yupwre4RP9_Eg_Bd0iYG:22 X-ME-CMScore: 0 X-ME-CMCategory: none Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757015AbeDVOtc (ORCPT ); Sun, 22 Apr 2018 10:49:32 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:56934 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757074AbeDVOPi (ORCPT ); Sun, 22 Apr 2018 10:15:38 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Al Viro Subject: [PATCH 4.4 13/97] getname_kernel() needs to make sure that ->name != ->iname in long case Date: Sun, 22 Apr 2018 15:52:51 +0200 Message-Id: <20180422135305.377409538@linuxfoundation.org> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180422135304.577223025@linuxfoundation.org> References: <20180422135304.577223025@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 4.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Al Viro commit 30ce4d1903e1d8a7ccd110860a5eef3c638ed8be upstream. missed it in "kill struct filename.separate" several years ago. Cc: stable@vger.kernel.org Signed-off-by: Al Viro Signed-off-by: Greg Kroah-Hartman --- fs/namei.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/fs/namei.c +++ b/fs/namei.c @@ -219,9 +219,10 @@ getname_kernel(const char * filename) if (len <= EMBEDDED_NAME_MAX) { result->name = (char *)result->iname; } else if (len <= PATH_MAX) { + const size_t size = offsetof(struct filename, iname[1]); struct filename *tmp; - tmp = kmalloc(sizeof(*tmp), GFP_KERNEL); + tmp = kmalloc(size, GFP_KERNEL); if (unlikely(!tmp)) { __putname(result); return ERR_PTR(-ENOMEM);