From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752024AbZCNAWm (ORCPT ); Fri, 13 Mar 2009 20:22:42 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752653AbZCNASd (ORCPT ); Fri, 13 Mar 2009 20:18:33 -0400 Received: from kroah.org ([198.145.64.141]:46706 "EHLO coco.kroah.org" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752491AbZCNASc (ORCPT ); Fri, 13 Mar 2009 20:18:32 -0400 X-Mailbox-Line: From gregkh@mini.kroah.org Fri Mar 13 17:07:40 2009 Message-Id: <20090314000740.462842888@mini.kroah.org> User-Agent: quilt/0.48-1 Date: Fri, 13 Mar 2009 17:05:20 -0700 From: Greg KH To: linux-kernel@vger.kernel.org, stable@kernel.org Cc: Justin Forbes , Zwane Mwaikambo , "Theodore Ts'o" , Randy Dunlap , Dave Jones , Chuck Wolber , Chris Wedgwood , Michael Krufky , Chuck Ebbert , Domenico Andreoli , Willy Tarreau , Rodrigo Rubira Branco , Jake Edge , Eugene Teo , torvalds@linux-foundation.org, akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk, Jeff Layton , Steve French Subject: [patch 12/96] [CIFS] Fix oops in cifs_strfromUCS_le mounting to servers which do not specify their OS References: <20090314000508.803142980@mini.kroah.org> Content-Disposition: inline; filename=fix-oops-in-cifs_strfromucs_le-mounting-to-servers-which-do-not-specify-their-os.patch In-Reply-To: <20090314001449.GA4485@kroah.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 2.6.27-stable review patch. If anyone has any objections, please let us know. ------------------ From: Steve French commit 69765529d701c838df19ea1f5ad2f33a528261ae upstream. Fixes kernel bug #10451 http://bugzilla.kernel.org/show_bug.cgi?id=10451 Certain NAS appliances do not set the operating system or network operating system fields in the session setup response on the wire. cifs was oopsing on the unexpected zero length response fields (when trying to null terminate a zero length field). This fixes the oops. Acked-by: Jeff Layton Signed-off-by: Steve French Signed-off-by: Greg Kroah-Hartman --- fs/cifs/CHANGES | 2 ++ fs/cifs/sess.c | 4 ++-- 2 files changed, 4 insertions(+), 2 deletions(-) --- a/fs/cifs/CHANGES +++ b/fs/cifs/CHANGES @@ -1,3 +1,5 @@ +Fix oops in cifs_dfs_ref.c when prefixpath is not reachable when using DFS. + Version 1.54 ------------ Fix premature write failure on congested networks (we would give up --- a/fs/cifs/sess.c +++ b/fs/cifs/sess.c @@ -228,7 +228,7 @@ static int decode_unicode_ssetup(char ** kfree(ses->serverOS); /* UTF-8 string will not grow more than four times as big as UCS-16 */ - ses->serverOS = kzalloc(4 * len, GFP_KERNEL); + ses->serverOS = kzalloc((4 * len) + 2 /* trailing null */, GFP_KERNEL); if (ses->serverOS != NULL) cifs_strfromUCS_le(ses->serverOS, (__le16 *)data, len, nls_cp); data += 2 * (len + 1); @@ -241,7 +241,7 @@ static int decode_unicode_ssetup(char ** return rc; kfree(ses->serverNOS); - ses->serverNOS = kzalloc(4 * len, GFP_KERNEL); /* BB this is wrong length FIXME BB */ + ses->serverNOS = kzalloc((4 * len) + 2 /* trailing null */, GFP_KERNEL); if (ses->serverNOS != NULL) { cifs_strfromUCS_le(ses->serverNOS, (__le16 *)data, len, nls_cp);