Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756924AbaDPWtp (ORCPT ); Wed, 16 Apr 2014 18:49:45 -0400 Received: from smtp2.it.da.ut.ee ([193.40.5.67]:54538 "EHLO smtp2.it.da.ut.ee" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754206AbaDPWt0 (ORCPT ); Wed, 16 Apr 2014 18:49:26 -0400 X-Greylist: delayed 1625 seconds by postgrey-1.27 at vger.kernel.org; Wed, 16 Apr 2014 18:49:26 EDT Date: Thu, 17 Apr 2014 01:22:17 +0300 (EEST) From: mroos@linux.ee To: David Miller cc: aaro.koskinen@iki.fi, sparclinux@vger.kernel.org, Linux Kernel list , hughd@google.com Subject: Re: sparc64 WARNING: at mm/mmap.c:2757 exit_mmap+0x13c/0x160() In-Reply-To: <20140416.145822.1317931249717152474.davem@davemloft.net> Message-ID: References: <20131022174612.GC24448@blackmetal.musicnaut.iki.fi> <20131022.135442.1072093301788210177.davem@davemloft.net> <20140414184353.GA5630@drone.musicnaut.iki.fi> <20140416.145822.1317931249717152474.davem@davemloft.net> User-Agent: Alpine 1.00 (SOC 882 2007-12-20) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > > 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. I have snice turned off CONFIG_TRANSPARENT_HUGEPAGE on 3 of 4 servers that had this problem (actually most of my sparc64 machines) and the 4th has CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE=y CONFIG_TRANSPARENT_HUGEPAGE=y # CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS is not set CONFIG_TRANSPARENT_HUGEPAGE_MADVISE=y # CONFIG_HUGETLBFS is not set # CONFIG_HUGETLB_PAGE is not se and also has not had this problem since then. All 4 machines have been running through most -rc's of every kernel. -- Meelis Roos -- 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/