From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id S1755996AbbFPAUi (ORCPT <rfc822;w@1wt.eu>);
	Mon, 15 Jun 2015 20:20:38 -0400
Received: from e32.co.us.ibm.com ([32.97.110.150]:59461 "EHLO
	e32.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
	with ESMTP id S1751132AbbFPAUf (ORCPT
	<rfc822;linux-kernel@vger.kernel.org>);
	Mon, 15 Jun 2015 20:20:35 -0400
X-Helo: d03dlp01.boulder.ibm.com
X-MailFrom: paulmck@linux.vnet.ibm.com
X-RcptTo: linux-kernel@vger.kernel.org
Date: Mon, 15 Jun 2015 17:20:31 -0700
From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
To: Jim Davis <jim.epost@gmail.com>
Cc: linux-kernel <linux-kernel@vger.kernel.org>, josh@joshtriplett.org
Subject: Re: arch linux with gcc 5.1.0 doesn't like include/linux/rcutiny.h
Message-ID: <20150616002031.GD3913@linux.vnet.ibm.com>
Reply-To: paulmck@linux.vnet.ibm.com
References: <CA+r1ZhgtLueFEJhnsgKdvawMEjT+F5Pv9zujapgPwpQq-gso9w@mail.gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Disposition: inline
Content-Transfer-Encoding: 8bit
In-Reply-To: <CA+r1ZhgtLueFEJhnsgKdvawMEjT+F5Pv9zujapgPwpQq-gso9w@mail.gmail.com>
User-Agent: Mutt/1.5.21 (2010-09-15)
X-TM-AS-MML: disable
X-Content-Scanned: Fidelis XPS MAILER
x-cbid: 15061600-0005-0000-0000-00000FF27B9E
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On Mon, Jun 15, 2015 at 05:11:16PM -0700, Jim Davis wrote:
> Just an FYI, but with next-20150615 (and I think some previous days too IIRC),
> 
> In file included from include/linux/rcupdate.h:429:0,
>                  from include/linux/srcu.h:33,
>                  from include/linux/notifier.h:15,
>                  from include/linux/memory_hotplug.h:6,
>                  from include/linux/mmzone.h:797,
>                  from include/linux/gfp.h:5,
>                  from include/linux/kmod.h:22,
>                  from include/linux/module.h:13,
>                  from kernel/rcu/rcutorture.c:28:
> include/linux/rcutiny.h: In function ‘rcu_barrier_sched’:
> include/linux/rcutiny.h:55:20: internal compiler error: Segmentation fault
>  static inline void rcu_barrier_sched(void)
>                     ^
> 
> That's with a random configuration file setting

I presume that you are reporting it to the gcc guys as well?  If nothing
else, for the obtuseness of the error message?

							Thanx, Paul

> # RCU Subsystem
> CONFIG_TINY_RCU=y
> CONFIG_RCU_EXPERT=y
> CONFIG_SRCU=y
> CONFIG_TASKS_RCU=y
> CONFIG_RCU_STALL_COMMON=y
> # CONFIG_TREE_RCU_TRACE is not set
> CONFIG_RCU_KTHREAD_PRIO=0
> # CONFIG_RCU_EXPEDITE_BOOT is not set
> # RCU Debugging
> CONFIG_PROVE_RCU=y
> CONFIG_PROVE_RCU_REPEATEDLY=y
> CONFIG_SPARSE_RCU_POINTER=y
> CONFIG_RCU_TORTURE_TEST=m
> # CONFIG_RCU_TORTURE_TEST_SLOW_PREINIT is not set
> # CONFIG_RCU_TORTURE_TEST_SLOW_INIT is not set
> # CONFIG_RCU_TORTURE_TEST_SLOW_CLEANUP is not set
> CONFIG_RCU_CPU_STALL_TIMEOUT=21
> CONFIG_RCU_TRACE=y
> # CONFIG_RCU_EQS_DEBUG is not set
> 
> Jim
>