From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:40558 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751061AbdAWOfv (ORCPT ); Mon, 23 Jan 2017 09:35:51 -0500 Subject: Patch "arm64/ptrace: Avoid uninitialised struct padding in fpr_set()" has been added to the 4.9-stable tree To: Dave.Martin@arm.com, Will.Deacon@arm.com, catalin.marinas@arm.com, gregkh@linuxfoundation.org Cc: , From: Date: Mon, 23 Jan 2017 15:35:31 +0100 Message-ID: <14851821319719@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 arm64/ptrace: Avoid uninitialised struct padding in fpr_set() 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: arm64-ptrace-avoid-uninitialised-struct-padding-in-fpr_set.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 aeb1f39d814b2e21e5e5706a48834bfd553d0059 Mon Sep 17 00:00:00 2001 From: Dave Martin Date: Wed, 18 Jan 2017 16:25:23 +0000 Subject: arm64/ptrace: Avoid uninitialised struct padding in fpr_set() From: Dave Martin commit aeb1f39d814b2e21e5e5706a48834bfd553d0059 upstream. This patch adds an explicit __reserved[] field to user_fpsimd_state to replace what was previously unnamed padding. This ensures that data in this region are propagated across assignment rather than being left possibly uninitialised at the destination. Fixes: 60ffc30d5652 ("arm64: Exception handling") Signed-off-by: Dave Martin Acked-by: Will Deacon Signed-off-by: Catalin Marinas Signed-off-by: Greg Kroah-Hartman --- arch/arm64/include/uapi/asm/ptrace.h | 1 + 1 file changed, 1 insertion(+) --- a/arch/arm64/include/uapi/asm/ptrace.h +++ b/arch/arm64/include/uapi/asm/ptrace.h @@ -77,6 +77,7 @@ struct user_fpsimd_state { __uint128_t vregs[32]; __u32 fpsr; __u32 fpcr; + __u32 __reserved[2]; }; struct user_hwdebug_state { Patches currently in stable-queue which might be from Dave.Martin@arm.com are queue-4.9/arm64-ptrace-preserve-previous-registers-for-short-regset-write-3.patch queue-4.9/arm64-ptrace-reject-attempts-to-set-incomplete-hardware-breakpoint-fields.patch queue-4.9/powerpc-ptrace-preserve-previous-tm-fprs-vsrs-on-short-regset-write.patch queue-4.9/arm64-ptrace-preserve-previous-registers-for-short-regset-write-2.patch queue-4.9/arm64-ptrace-avoid-uninitialised-struct-padding-in-fpr_set.patch queue-4.9/arm64-ptrace-preserve-previous-registers-for-short-regset-write.patch queue-4.9/powerpc-ptrace-preserve-previous-fprs-vsrs-on-short-regset-write.patch