Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932545AbVISTJA (ORCPT ); Mon, 19 Sep 2005 15:09:00 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932552AbVISTJA (ORCPT ); Mon, 19 Sep 2005 15:09:00 -0400 Received: from omx3-ext.sgi.com ([192.48.171.20]:13244 "EHLO omx3.sgi.com") by vger.kernel.org with ESMTP id S932545AbVISTI7 (ORCPT ); Mon, 19 Sep 2005 15:08:59 -0400 Date: Mon, 19 Sep 2005 12:08:48 -0700 (PDT) From: Christoph Lameter To: Petr Vandrovec cc: Andrew Morton , linux-kernel@vger.kernel.org, alokk@calsoftinc.com Subject: Re: 2.6.14-rc1-git-now still dying in mm/slab - this time line 1849 In-Reply-To: <432F09DA.7050408@vc.cvut.cz> Message-ID: References: <4329A6A3.7080506@vc.cvut.cz> <20050916023005.4146e499.akpm@osdl.org> <432AA00D.4030706@vc.cvut.cz> <20050916230809.789d6b0b.akpm@osdl.org> <432EE103.5020105@vc.cvut.cz> <20050919112912.18daf2eb.akpm@osdl.org> <432F09DA.7050408@vc.cvut.cz> 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: 897 Lines: 19 On Mon, 19 Sep 2005, Petr Vandrovec wrote: > I've thought that this is problem, but as far as I can tell while this is > problem it does not happen here. Just free_block() finds that pointer it > got from caller belongs to the slab that belongs to the CPU#1/node#1 > while caller obtained lock on CPU#0/node#0 structures. Which suggests > that drain_array_locked() was issued with node #0 while array_cache->entry > it got contains blocks which belong to node #1. Which I cannot explain. That can happen if node 0 runs out of memory and the page_allocator falls back to take memory from node 1 for node 0 requests. Maybe we have a problem here. - 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/