Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932362AbWCPD64 (ORCPT ); Wed, 15 Mar 2006 22:58:56 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932617AbWCPD64 (ORCPT ); Wed, 15 Mar 2006 22:58:56 -0500 Received: from smtp.osdl.org ([65.172.181.4]:14229 "EHLO smtp.osdl.org") by vger.kernel.org with ESMTP id S932362AbWCPD6z (ORCPT ); Wed, 15 Mar 2006 22:58:55 -0500 Date: Wed, 15 Mar 2006 19:58:49 -0800 (PST) From: Linus Torvalds To: "Bryan O'Sullivan" cc: Roland Dreier , Andrew Morton , Christoph Hellwig , linux-kernel@vger.kernel.org Subject: Re: [PATCH 10 of 20] ipath - support for userspace apps using core driver In-Reply-To: <1142477579.6994.124.camel@localhost.localdomain> Message-ID: References: <71644dd19420ddb07a75.1141922823@localhost.localdomain> <1141948516.10693.55.camel@serpentine.pathscale.com> <1141949262.10693.69.camel@serpentine.pathscale.com> <20060309163740.0b589ea4.akpm@osdl.org> <1142470579.6994.78.camel@localhost.localdomain> <1142475069.6994.114.camel@localhost.localdomain> <1142477579.6994.124.camel@localhost.localdomain> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 730 Lines: 21 On Wed, 15 Mar 2006, Bryan O'Sullivan wrote: > > This is what it looks like when I always call get_page in my nopage > handler (after checking that the pfn is valid and pfn_to_page hasn't > given me junk). > > Bad page state at free_hot_cold_page (in process 'mpi_hello', page ffff810002098af8) > flags:0x0100000000000404 mapping:0000000000000000 mapcount:0 count:0 (Not tainted) > Backtrace: You shouldn't use PG_reserved on regular pages that you do page counting on. Linus - 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/