From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265763AbUGTJHJ (ORCPT ); Tue, 20 Jul 2004 05:07:09 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265770AbUGTJHJ (ORCPT ); Tue, 20 Jul 2004 05:07:09 -0400 Received: from hosting-24.75.rev.fr.colt.net ([213.41.75.24]:57773 "EHLO lastinfos.com") by vger.kernel.org with ESMTP id S265763AbUGTJG5 (ORCPT ); Tue, 20 Jul 2004 05:06:57 -0400 Subject: Re: kernel 2.6.7 -> page allocation failure. order:1, mode:0x20 (netfilter?) From: Sebastien ESTIENNE Reply-To: sebest@ovibes.net To: Harald Welte Cc: linux-kernel@vger.kernel.org, netfilter-devel@lists.netfilter.org, netdev@oss.sgi.com In-Reply-To: <20040720024741.GF27487@obroa-skai.de.gnumonks.org> References: <40FB93FE.90308@ovibes.net> <20040720024741.GF27487@obroa-skai.de.gnumonks.org> Content-Type: text/plain; charset=utf-8 Organization: ethium Message-Id: <1090314411.13005.2.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.6 (1.4.6-2) Date: Tue, 20 Jul 2004 11:06:51 +0200 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Le mar 20/07/2004 à 04:47, Harald Welte a écrit : > On Mon, Jul 19, 2004 at 11:27:26AM +0200, Sebastien ESTIENNE wrote: > > Hello, > > i have some "swapper: page allocation failure. order:1, mode:0x20" > > followed by kernel message, > > > > the hardware is a dell poweredge 1750 > > the kernel is a 2.6.7 vanilla > > > > here for a dmesg > > http://213.41.75.25/kernel/dmesg.txt > the chunk below seems like a standard code path for a locally-generated > outgoing packet: > > > [] skb_checksum_help+0x52/0x136 > > [] ip_nat_fn+0x269/0x27a [iptable_nat] > > [] ip_nat_local_fn+0x7b/0xaa [iptable_nat] > > [] tcp_sendmsg+0x509/0x10f7 > > [] tasklet_action+0x65/0xae > > [] apic_timer_interrupt+0x1a/0x20 > > [] dst_output+0x0/0x29 > > [] inet_sendmsg+0x4d/0x59 > > [] dst_output+0x0/0x29 > > [] sock_aio_write+0xbd/0xdd > > [] do_sync_write+0x8b/0xb7 > > [] nf_iterate+0x71/0xa2 > > [] copy_from_user+0x42/0x6e > > [] vfs_write+0xe8/0x119 > > [] sys_write+0x42/0x63 > > [] syscall_call+0x7/0xb > > > what's worrying me is the part above... how would skb_checksum_help > directly end up in copy_from_user()? > > > swapper: page allocation failure. order:1, mode:0x20 > > [] __alloc_pages+0x2da/0x34a > > [] __get_free_pages+0x25/0x3f > > [] kmem_getpages+0x2b/0xdc > > [] kfree_skbmem+0x24/0x2c > > [] cache_grow+0xe5/0x2a4 > > [] cache_grow+0x146/0x2a4 > > [] cache_alloc_refill+0x1cf/0x29f > > [] __kmalloc+0x85/0x8c > > [] tcp_transmit_skb+0x411/0x68a > > [] alloc_skb+0x47/0xe0 > > [] tcp_write_xmit+0x16d/0x2d6 > > [] skb_copy+0x33/0xde > > [] copy_from_user+0x42/0x6e > > Does anybody have a clue what's going on? I was running apache bench v2 on localhost And Shorewall firewall script is installed on it (version 2.0.4) iptables version 2.0.4 hope it can help