From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1764324AbZAUL26 (ORCPT ); Wed, 21 Jan 2009 06:28:58 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756024AbZAUL2t (ORCPT ); Wed, 21 Jan 2009 06:28:49 -0500 Received: from mx3.mail.elte.hu ([157.181.1.138]:48289 "EHLO mx3.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756703AbZAUL2s (ORCPT ); Wed, 21 Jan 2009 06:28:48 -0500 Date: Wed, 21 Jan 2009 12:28:35 +0100 From: Ingo Molnar To: Nick Piggin Cc: venkatesh.pallipadi@intel.com, Suresh Siddha , Linux Kernel Mailing List Subject: Re: x86 warnings in arch/x86/mm/pageattr.c:560 Message-ID: <20090121112835.GF23469@elte.hu> References: <20090120091837.GC19505@wotan.suse.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20090120091837.GC19505@wotan.suse.de> User-Agent: Mutt/1.5.18 (2008-05-17) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.5 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.3 -1.5 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Nick Piggin wrote: > Hi, > > I've been getting this warning intermittently since the merge window > opened. Considering that track_pfn_vma_new is called before the ptes > are set up in remap_pfn_range (and remap_pfn_range contains a warning > if the ptes *are* nonzero), I don't know how this is supposed to work? > > Anyway, I can of course test patches. > > ------------[ cut here ]------------ > WARNING: at arch/x86/mm/pageattr.c:560 __change_page_attr_set_clr+0x9ef/0xa00() > Hardware name: empty > CPA: called for zero pte. vaddr = ffff8800cff4e000 cpa->vaddr = ffff8800cff4e000 Ok, i have just queued up a fix that could address this - could you please try latest tip/master: http://people.redhat.com/mingo/tip.git/README does it still produce that warning? Ingo