Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756258AbaDPS6a (ORCPT ); Wed, 16 Apr 2014 14:58:30 -0400 Received: from shards.monkeyblade.net ([149.20.54.216]:47401 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756084AbaDPS6Z (ORCPT ); Wed, 16 Apr 2014 14:58:25 -0400 Date: Wed, 16 Apr 2014 14:58:22 -0400 (EDT) Message-Id: <20140416.145822.1317931249717152474.davem@davemloft.net> To: aaro.koskinen@iki.fi Cc: mroos@linux.ee, sparclinux@vger.kernel.org, linux-kernel@vger.kernel.org, hughd@google.com Subject: Re: sparc64 WARNING: at mm/mmap.c:2757 exit_mmap+0x13c/0x160() From: David Miller In-Reply-To: <20140414184353.GA5630@drone.musicnaut.iki.fi> References: <20131022174612.GC24448@blackmetal.musicnaut.iki.fi> <20131022.135442.1072093301788210177.davem@davemloft.net> <20140414184353.GA5630@drone.musicnaut.iki.fi> X-Mailer: Mew version 6.5 on Emacs 24.3 / Mule 6.0 (HANACHIRUSATO) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.5.7 (shards.monkeyblade.net [149.20.54.216]); Wed, 16 Apr 2014 11:58:24 -0700 (PDT) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Aaro Koskinen Date: Mon, 14 Apr 2014 21:43:53 +0300 > Just for the archives, I got one of these again with 3.14: Meelis and Aaro, thanks again for all of your reports. After pouring over a lot of the data and auditing some code I'm suspecting it's a problem with transparent huge pages. One thing you two can do to help me further confirm this is to run with THP disabled for a while and see if you still get the log messages. Simply, as root: bash# echo "never" >/sys/kernel/mm/transparent_hugepage/enabled And then do your gcc bootstraps or whatever else seems to usually run when you trigger this problem. Thanks! -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/