From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932868AbdDEJES (ORCPT ); Wed, 5 Apr 2017 05:04:18 -0400 Received: from terminus.zytor.com ([65.50.211.136]:58267 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932792AbdDEJEN (ORCPT ); Wed, 5 Apr 2017 05:04:13 -0400 Date: Wed, 5 Apr 2017 01:58:21 -0700 From: tip-bot for Joerg Roedel Message-ID: Cc: luto@kernel.org, jroedel@suse.de, linux-kernel@vger.kernel.org, brgerst@gmail.com, 0x7f454c46@gmail.com, peterz@infradead.org, bp@alien8.de, bp@suse.de, hpa@zytor.com, dvlasenk@redhat.com, tglx@linutronix.de, dave.hansen@linux.intel.com, jpoimboe@redhat.com, mingo@kernel.org, torvalds@linux-foundation.org Reply-To: jpoimboe@redhat.com, dave.hansen@linux.intel.com, tglx@linutronix.de, torvalds@linux-foundation.org, mingo@kernel.org, bp@suse.de, hpa@zytor.com, dvlasenk@redhat.com, 0x7f454c46@gmail.com, brgerst@gmail.com, linux-kernel@vger.kernel.org, bp@alien8.de, peterz@infradead.org, luto@kernel.org, jroedel@suse.de In-Reply-To: <1491322501-5054-1-git-send-email-joro@8bytes.org> References: <1491322501-5054-1-git-send-email-joro@8bytes.org> To: linux-tip-commits@vger.kernel.org Subject: [tip:x86/urgent] x86/signals: Fix lower/upper bound reporting in compat siginfo Git-Commit-ID: cfac6dfa42bddfa9711b20d486e521d1a41ab09f X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: cfac6dfa42bddfa9711b20d486e521d1a41ab09f Gitweb: http://git.kernel.org/tip/cfac6dfa42bddfa9711b20d486e521d1a41ab09f Author: Joerg Roedel AuthorDate: Tue, 4 Apr 2017 18:15:01 +0200 Committer: Ingo Molnar CommitDate: Wed, 5 Apr 2017 10:16:43 +0200 x86/signals: Fix lower/upper bound reporting in compat siginfo Put the right values from the original siginfo into the userspace compat-siginfo. This fixes the 32-bit MPX "tabletest" testcase on 64-bit kernels. Signed-off-by: Joerg Roedel Acked-by: Dave Hansen Cc: # v4.8+ Cc: Andy Lutomirski Cc: Borislav Petkov Cc: Borislav Petkov Cc: Brian Gerst Cc: Denys Vlasenko Cc: Dmitry Safonov <0x7f454c46@gmail.com> Cc: H. Peter Anvin Cc: Josh Poimboeuf Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Fixes: a4455082dc6f0 ('x86/signals: Add missing signal_compat code for x86 features') Link: http://lkml.kernel.org/r/1491322501-5054-1-git-send-email-joro@8bytes.org Signed-off-by: Ingo Molnar --- arch/x86/kernel/signal_compat.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/x86/kernel/signal_compat.c b/arch/x86/kernel/signal_compat.c index ec1f756..71beb28 100644 --- a/arch/x86/kernel/signal_compat.c +++ b/arch/x86/kernel/signal_compat.c @@ -151,8 +151,8 @@ int __copy_siginfo_to_user32(compat_siginfo_t __user *to, const siginfo_t *from, if (from->si_signo == SIGSEGV) { if (from->si_code == SEGV_BNDERR) { - compat_uptr_t lower = (unsigned long)&to->si_lower; - compat_uptr_t upper = (unsigned long)&to->si_upper; + compat_uptr_t lower = (unsigned long)from->si_lower; + compat_uptr_t upper = (unsigned long)from->si_upper; put_user_ex(lower, &to->si_lower); put_user_ex(upper, &to->si_upper); }