From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:36970 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932942AbcDLVAE (ORCPT ); Tue, 12 Apr 2016 17:00:04 -0400 Subject: Patch "parisc: Avoid function pointers for kernel exception routines" has been added to the 3.14-stable tree To: deller@gmx.de, gregkh@linuxfoundation.org Cc: , From: Date: Tue, 12 Apr 2016 14:00:02 -0700 Message-ID: <1460494802219179@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled parisc: Avoid function pointers for kernel exception routines to the 3.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: parisc-avoid-function-pointers-for-kernel-exception-routines.patch and it can be found in the queue-3.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From e3893027a300927049efc1572f852201eb785142 Mon Sep 17 00:00:00 2001 From: Helge Deller Date: Fri, 8 Apr 2016 18:11:33 +0200 Subject: parisc: Avoid function pointers for kernel exception routines From: Helge Deller commit e3893027a300927049efc1572f852201eb785142 upstream. We want to avoid the kernel module loader to create function pointers for the kernel fixup routines of get_user() and put_user(). Changing the external reference from function type to int type fixes this. This unbreaks exception handling for get_user() and put_user() when called from a kernel module. Signed-off-by: Helge Deller Signed-off-by: Greg Kroah-Hartman --- arch/parisc/kernel/parisc_ksyms.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) --- a/arch/parisc/kernel/parisc_ksyms.c +++ b/arch/parisc/kernel/parisc_ksyms.c @@ -47,11 +47,11 @@ EXPORT_SYMBOL(__cmpxchg_u64); EXPORT_SYMBOL(lclear_user); EXPORT_SYMBOL(lstrnlen_user); -/* Global fixups */ -extern void fixup_get_user_skip_1(void); -extern void fixup_get_user_skip_2(void); -extern void fixup_put_user_skip_1(void); -extern void fixup_put_user_skip_2(void); +/* Global fixups - defined as int to avoid creation of function pointers */ +extern int fixup_get_user_skip_1; +extern int fixup_get_user_skip_2; +extern int fixup_put_user_skip_1; +extern int fixup_put_user_skip_2; EXPORT_SYMBOL(fixup_get_user_skip_1); EXPORT_SYMBOL(fixup_get_user_skip_2); EXPORT_SYMBOL(fixup_put_user_skip_1); Patches currently in stable-queue which might be from deller@gmx.de are queue-3.14/parisc-fix-kernel-crash-with-reversed-copy_from_user.patch queue-3.14/parisc-avoid-function-pointers-for-kernel-exception-routines.patch