From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760134AbYDAW26 (ORCPT ); Tue, 1 Apr 2008 18:28:58 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1759887AbYDAW2n (ORCPT ); Tue, 1 Apr 2008 18:28:43 -0400 Received: from nf-out-0910.google.com ([64.233.182.185]:64165 "EHLO nf-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756809AbYDAW2k (ORCPT ); Tue, 1 Apr 2008 18:28:40 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=message-id:date:from:to:subject:cc:mime-version:content-type:content-transfer-encoding:content-disposition; b=M67GP10mlg4QV8GAsNKBw8N/kLvVEDVtFaZdsgTgKhmmFjSIEsPGnCgVtzcbOp+YT29MzUSpqdVClRA30WNST3gS0AUxAHOcbMJ0DQYC9yaZmQoj4A86DyZheXcgLkbl/Wid7sWk97iThrjDF/nf47LIWl/3S2sGOqUfDqvJvhY= Message-ID: <5a4c581d0804011528g786550c5sfd6bf90c0c37706@mail.gmail.com> Date: Wed, 2 Apr 2008 00:28:36 +0200 From: "Alessandro Suardi" To: "Linux Kernel" Subject: 2.6.25-rc6-git2: warn_on_slowpath for tcp_simple_retransmit Cc: netdev@vger.kernel.org MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Found this in my FC6-based bittorrent box (K7-800 running a 2.6.25-rc6-git2 kernel) this evening. The kernel was upgraded two weeks ago to fix the bug in which an USB VIA driver hammered the PCI bus causing ATA disk performance to drop, and has been running since then (it still is). So it's actually 2.6.25-rc6-git2 plus patch as in here http://www.gossamer-threads.com/lists/linux/kernel/895506#895506 If there's anything useful I can do, just ask. Thanks ! [1164423.381894] WARNING: at net/ipv4/tcp_output.c:1811 tcp_simple_retransmit+0xde/0x167() [1164423.382797] Modules linked in: iptable_filter ip_tables x_tables ipv6 sd_mod floppy usb_storage scsi_mod parport_pc parport ehci_hcd uhci_hcd [1164423.384115] Pid: 11864, comm: peerguardnf Not tainted 2.6.25-rc6-git2 #2 [1164423.384734] [] warn_on_slowpath+0x41/0x51 [1164423.385262] [] ? __lock_acquire+0xac8/0xb10 [1164423.385803] [] ? __lock_acquire+0xac8/0xb10 [1164423.386235] [] ? __inet_lookup_established+0x171/0x17b [1164423.386837] [] ? tcp_v4_err+0xf4/0x353 [1164423.387338] [] tcp_simple_retransmit+0xde/0x167 [1164423.387883] [] tcp_v4_err+0x1fa/0x353 [1164423.388369] [] ? icmp_unreach+0x1e7/0x280 [1164423.388893] [] icmp_unreach+0x23e/0x280 [1164423.389392] [] icmp_rcv+0x1c9/0x1f1 [1164423.389893] [] ip_local_deliver_finish+0xf6/0x1a1 [1164423.390453] [] nf_reinject+0xc3/0x136 [1164423.390940] [] ipq_rcv_skb+0x359/0x3b5 [1164423.391441] [] netlink_unicast+0x1b8/0x21c [1164423.391968] [] netlink_sendmsg+0x241/0x24e [1164423.392487] [] sock_sendmsg+0xc9/0xe0 [1164423.392981] [] ? autoremove_wake_function+0x0/0x33 [1164423.393560] [] ? copy_from_user+0x3b/0x5e [1164423.394226] [] ? verify_iovec+0x40/0x70 [1164423.394733] [] sys_sendmsg+0x14d/0x1a8 [1164423.395228] [] ? copy_to_user+0x3d/0x49 [1164423.395733] [] ? move_addr_to_user+0x3b/0x52 [1164423.396268] [] ? sys_recvfrom+0xb8/0xc3 [1164423.396774] [] ? __lock_acquire+0xac8/0xb10 [1164423.397305] [] ? do_softirq+0x9a/0xa8 [1164423.397893] [] ? restore_nocheck+0x12/0x15 [1164423.398417] [] ? trace_hardirqs_on+0xe6/0x10d [1164423.398957] [] ? restore_nocheck+0x12/0x15 [1164423.399483] [] sys_socketcall+0x14e/0x166 [1164423.399995] [] ? sysenter_past_esp+0x9a/0xa5 [1164423.400528] [] sysenter_past_esp+0x5f/0xa5 [1164423.401047] [] ? bio_fs_destructor+0x0/0x10 [1164423.401580] ======================= [1164423.401892] ---[ end trace ec1e34ea2cdbd7ae ]--- [1164425.080514] ------------[ cut here ]------------ [1164425.081052] WARNING: at net/ipv4/tcp_input.c:1771 tcp_enter_frto+0x150/0x1ec() [1164425.081910] Modules linked in: iptable_filter ip_tables x_tables ipv6 sd_mod floppy usb_storage scsi_mod parport_pc parport ehci_hcd uhci_hcd [1164425.083225] Pid: 0, comm: swapper Not tainted 2.6.25-rc6-git2 #2 [1164425.083797] [] warn_on_slowpath+0x41/0x51 [1164425.084323] [] ? __lock_acquire+0xac8/0xb10 [1164425.084844] [] ? __lock_acquire+0xac8/0xb10 [1164425.085374] [] ? __lock_acquire+0xac8/0xb10 [1164425.085904] [] ? tcp_write_timer+0x16/0x575 [1164425.086434] [] tcp_enter_frto+0x150/0x1ec [1164425.086943] [] tcp_write_timer+0x375/0x575 [1164425.087458] [] run_timer_softirq+0x112/0x16d [1164425.087985] [] ? tcp_write_timer+0x0/0x575 [1164425.088490] [] ? tcp_write_timer+0x0/0x575 [1164425.089012] [] __do_softirq+0x51/0xa8 [1164425.089505] [] do_softirq+0x58/0xa8 [1164425.089986] [] ? handle_level_irq+0x0/0xbf [1164425.090511] [] irq_exit+0x3b/0x47 [1164425.090975] [] do_IRQ+0x98/0xad [1164425.091428] [] common_interrupt+0x2e/0x34 [1164425.091939] [] ? default_idle+0x45/0x72 [1164425.092490] [] ? default_idle+0x0/0x72 [1164425.092989] [] cpu_idle+0x60/0x88 [1164425.093451] [] rest_init+0x5c/0x5e [1164425.093927] ======================= [1164425.094334] ---[ end trace ec1e34ea2cdbd7ae ]--- --alessandro "Hold back the years, hold back the hours I want to live to see the sun break through these days" (Patrick Wolf, 'This Weather')