From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752557AbcEMLxR (ORCPT ); Fri, 13 May 2016 07:53:17 -0400 Received: from terminus.zytor.com ([198.137.202.10]:41602 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751481AbcEMLxP (ORCPT ); Fri, 13 May 2016 07:53:15 -0400 Date: Fri, 13 May 2016 04:51:38 -0700 From: tip-bot for Mateusz Guzik Message-ID: Cc: hpa@zytor.com, tglx@linutronix.de, linux-kernel@vger.kernel.org, alexander.shishkin@linux.intel.com, mguzik@redhat.com, bp@alien8.de, vincent.weaver@maine.edu, mingo@kernel.org, peterz@infradead.org, acme@redhat.com, torvalds@linux-foundation.org, luto@amacapital.net, dvlasenk@redhat.com, luto@kernel.org, jolsa@redhat.com, brgerst@gmail.com, eranian@google.com Reply-To: luto@amacapital.net, torvalds@linux-foundation.org, acme@redhat.com, peterz@infradead.org, eranian@google.com, brgerst@gmail.com, jolsa@redhat.com, luto@kernel.org, dvlasenk@redhat.com, tglx@linutronix.de, hpa@zytor.com, mingo@kernel.org, vincent.weaver@maine.edu, bp@alien8.de, mguzik@redhat.com, alexander.shishkin@linux.intel.com, linux-kernel@vger.kernel.org In-Reply-To: <1462913803-29634-1-git-send-email-mguzik@redhat.com> References: <1462913803-29634-1-git-send-email-mguzik@redhat.com> To: linux-tip-commits@vger.kernel.org Subject: [tip:x86/asm] x86/arch_prctl/64: Restore accidentally removed put_cpu() in ARCH_SET_GS Git-Commit-ID: 4afd0565552c87f23834db9121dd9cf6955d0b43 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: 4afd0565552c87f23834db9121dd9cf6955d0b43 Gitweb: http://git.kernel.org/tip/4afd0565552c87f23834db9121dd9cf6955d0b43 Author: Mateusz Guzik AuthorDate: Tue, 10 May 2016 22:56:43 +0200 Committer: Ingo Molnar CommitDate: Fri, 13 May 2016 13:50:15 +0200 x86/arch_prctl/64: Restore accidentally removed put_cpu() in ARCH_SET_GS This fixes an oversight in: 731e33e39a5b95 ("Remove FSBASE/GSBASE < 4G optimization") Signed-off-by: Mateusz Guzik Cc: Alexander Shishkin Cc: Andy Lutomirski Cc: Andy Lutomirski Cc: Arnaldo Carvalho de Melo Cc: Borislav Petkov Cc: Brian Gerst Cc: Denys Vlasenko Cc: H. Peter Anvin Cc: Jiri Olsa Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Thomas Gleixner Cc: Vince Weaver Link: http://lkml.kernel.org/r/1462913803-29634-1-git-send-email-mguzik@redhat.com Signed-off-by: Ingo Molnar --- arch/x86/kernel/process_64.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c index 4285f6a..6b16c36 100644 --- a/arch/x86/kernel/process_64.c +++ b/arch/x86/kernel/process_64.c @@ -541,6 +541,7 @@ long do_arch_prctl(struct task_struct *task, int code, unsigned long addr) load_gs_index(0); ret = wrmsrl_safe(MSR_KERNEL_GS_BASE, addr); } + put_cpu(); break; case ARCH_SET_FS: /* Not strictly needed for fs, but do it for symmetry