From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:35062 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756251AbdAIP36 (ORCPT ); Mon, 9 Jan 2017 10:29:58 -0500 Subject: Patch "x86/prctl/uapi: Remove #ifdef for CHECKPOINT_RESTORE" has been added to the 4.9-stable tree To: dsafonov@virtuozzo.com, bp@alien8.de, brgerst@gmail.com, dvlasenk@redhat.com, gorcunov@openvz.org, gregkh@linuxfoundation.org, hpa@zytor.com, jpoimboe@redhat.com, luto@kernel.org, mingo@kernel.org, pebolle@tiscali.nl, peterz@infradead.org, tglx@linutronix.de, torvalds@linux-foundation.org Cc: , From: Date: Mon, 09 Jan 2017 16:27:59 +0100 Message-ID: <148397567918175@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 x86/prctl/uapi: Remove #ifdef for CHECKPOINT_RESTORE to the 4.9-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: x86-prctl-uapi-remove-ifdef-for-checkpoint_restore.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From a01aa6c9f40fe03c82032e7f8b3bcf1e6c93ac0e Mon Sep 17 00:00:00 2001 From: Dmitry Safonov Date: Thu, 27 Oct 2016 17:15:15 +0300 Subject: x86/prctl/uapi: Remove #ifdef for CHECKPOINT_RESTORE From: Dmitry Safonov commit a01aa6c9f40fe03c82032e7f8b3bcf1e6c93ac0e upstream. As userspace knows nothing about kernel config, thus #ifdefs around ABI prctl constants makes them invisible to userspace. Let it be clean'n'simple: remove #ifdefs. If kernel has CONFIG_CHECKPOINT_RESTORE disabled, sys_prctl() will return -EINVAL for those prctls. Reported-by: Paul Bolle Signed-off-by: Dmitry Safonov Acked-by: Andy Lutomirski Cc: 0x7f454c46@gmail.com Cc: Borislav Petkov Cc: Brian Gerst Cc: Cyrill Gorcunov Cc: Denys Vlasenko Cc: H. Peter Anvin Cc: Josh Poimboeuf Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: linux-mm@kvack.org Cc: oleg@redhat.com Fixes: 2eefd8789698 ("x86/arch_prctl/vdso: Add ARCH_MAP_VDSO_*") Link: http://lkml.kernel.org/r/20161027141516.28447-2-dsafonov@virtuozzo.com Signed-off-by: Ingo Molnar Signed-off-by: Greg Kroah-Hartman --- arch/x86/include/uapi/asm/prctl.h | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) --- a/arch/x86/include/uapi/asm/prctl.h +++ b/arch/x86/include/uapi/asm/prctl.h @@ -6,10 +6,8 @@ #define ARCH_GET_FS 0x1003 #define ARCH_GET_GS 0x1004 -#ifdef CONFIG_CHECKPOINT_RESTORE -# define ARCH_MAP_VDSO_X32 0x2001 -# define ARCH_MAP_VDSO_32 0x2002 -# define ARCH_MAP_VDSO_64 0x2003 -#endif +#define ARCH_MAP_VDSO_X32 0x2001 +#define ARCH_MAP_VDSO_32 0x2002 +#define ARCH_MAP_VDSO_64 0x2003 #endif /* _ASM_X86_PRCTL_H */ Patches currently in stable-queue which might be from dsafonov@virtuozzo.com are queue-4.9/x86-prctl-uapi-remove-ifdef-for-checkpoint_restore.patch