From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Denys Fedoryshchenko" <denys@visp.net.lb>
Subject: kernel 2.6.25-rc7 highly unstable on high load
Date: Thu, 27 Mar 2008 08:35:06 +0200
Message-ID: <20080327062502.M51594@visp.net.lb>
Mime-Version: 1.0
Content-Type: text/plain;
	charset=koi8-r
To: netdev@vger.kernel.org
Return-path: <netdev-owner@vger.kernel.org>
Received: from usermail.globalproof.net ([194.146.153.18]:43714 "EHLO
	usermail.globalproof.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
	with ESMTP id S1753519AbYC0GfR (ORCPT
	<rfc822;netdev@vger.kernel.org>); Thu, 27 Mar 2008 02:35:17 -0400
Received: from visp.net.lb (localhost [127.0.0.1])
	by usermail.globalproof.net (Postfix) with ESMTP id 20515BD396
	for <netdev@vger.kernel.org>; Thu, 27 Mar 2008 08:35:06 +0200 (EET)
Sender: netdev-owner@vger.kernel.org
List-ID: <netdev.vger.kernel.org>

Hi again

It seems i am having very bad luck with 2.6.27. As Linus told, it have to be 
released soon, but it is crashing like hell on high network load.

Even i change FIB to HASH, still after 3-4 hours running it stuck. And 
NOTHING helps. Software watchdog (hardware iTCO_wdt probably not working at 
all on ICH9 Intel boards),nmi_watchdog (even panic on oops set, and reboot on 
panic set too), hangcheck-timer, shell script with ping watchdog. Nothing 
helps. So probably people with heavy loaded machines without IPMI and 
management cards will be very "happy".
I have now watchdog just doing malloc/free loop, i will try to modify it, so 
it will send \000 only when ping succeeded.

One crash i had netconsole enabled, next crash it was disabled.

Here is a message i got over syslog on last crash (it was 2.6.25-rc6-git6), 
available also at http://www.nuclearcat.com/files/crash_2.6.25.txt

Mar 26 02:27:14 ROUTER [ 4698.694693] BUG: NMI Watchdog detected LOCKUP
Mar 26 02:27:14 ROUTER on CPU1, ip c02ad109, registers:
Mar 26 02:27:14 ROUTER [ 4698.694693] Process snmpd (pid: 2327, ti=c092e000 
task=f7459080 task.ti=f70b7000)
Mar 26 02:27:14 ROUTER 
Mar 26 02:27:14 ROUTER [ 4698.694693] Stack: 
Mar 26 02:27:14 ROUTER c092eb14 
Mar 26 02:27:14 ROUTER c011991e 
Mar 26 02:27:14 ROUTER f750d600 
Mar 26 02:27:14 ROUTER f750d600 
Mar 26 02:27:14 ROUTER c0378058 
Mar 26 02:27:14 ROUTER 00000001 
Mar 26 02:27:14 ROUTER c092eb34 
Mar 26 02:27:14 ROUTER c0119b3b 
Mar 26 02:27:14 ROUTER 
Mar 26 02:27:14 ROUTER [ 4698.694693]        
Mar 26 02:27:14 ROUTER 00000000 
Mar 26 02:27:14 ROUTER 00000001 
Mar 26 02:27:14 ROUTER 00000082 
Mar 26 02:27:14 ROUTER f708af88 
Mar 26 02:27:14 ROUTER c0378058 
Mar 26 02:27:14 ROUTER 00000001 
Mar 26 02:27:14 ROUTER c092eb3c 
Mar 26 02:27:14 ROUTER c0119bfe 
Mar 26 02:27:14 ROUTER 
Mar 26 02:27:14 ROUTER [ 4698.694693]        
Mar 26 02:27:14 ROUTER c092eb50 
Mar 26 02:27:14 ROUTER c012f19c 
Mar 26 02:27:14 ROUTER 00000000 
Mar 26 02:27:14 ROUTER f708af88 
Mar 26 02:27:14 ROUTER c0378058 
Mar 26 02:27:14 ROUTER c092eb74 
Mar 26 02:27:14 ROUTER c011652a 
Mar 26 02:27:14 ROUTER 00000000 
Mar 26 02:27:14 ROUTER 
Mar 26 02:27:14 ROUTER [ 4698.694693] Call Trace:
Mar 26 02:27:14 ROUTER [ 4698.694693]  [<c011991e>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER task_rq_lock+0x31/0x58
Mar 26 02:27:14 ROUTER [ 4698.694693]  [<c0119b3b>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER try_to_wake_up+0x19/0xd1
Mar 26 02:27:14 ROUTER [ 4698.694693]  [<c0119bfe>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER default_wake_function+0xb/0xd
Mar 26 02:27:14 ROUTER [ 4698.694693]  [<c012f19c>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER autoremove_wake_function+0xf/0x33
Mar 26 02:27:14 ROUTER [ 4698.694693]  [<c011652a>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER __wake_up_common+0x2f/0x5a
Mar 26 02:27:14 ROUTER [ 4698.694693]  [<c01189b8>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER __wake_up+0x28/0x3b
Mar 26 02:27:14 ROUTER [ 4698.694693]  [<c01201a3>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER wake_up_klogd+0x2e/0x31
Mar 26 02:27:14 ROUTER [ 4698.694693]  [<c012033d>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER release_console_sem+0x197/0x19f
Mar 26 02:27:14 ROUTER [ 4698.694693]  [<c0120747>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER vprintk+0x295/0x2e5
Mar 26 02:27:14 ROUTER [ 4698.694693]  [<f899634c>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER death_by_timeout+0x8b/0xa3 [nf_conntrack]
Mar 26 02:27:14 ROUTER [ 4698.694693]  [<f8999d08>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER tcp_packet+0x931/0x9e5 [nf_conntrack]
Mar 26 02:27:14 ROUTER [ 4698.694693]  [<c01207ac>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER printk+0x15/0x17
Mar 26 02:27:14 ROUTER [ 4698.694693]  [<c011fb65>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER warn_on_slowpath+0x2a/0x51
Mar 26 02:27:14 ROUTER [ 4698.694693]  [<c011764a>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER __update_rq_clock+0x1c/0x126
Mar 26 02:27:14 ROUTER [ 4698.694693]  [<c0116ab3>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER update_curr+0x48/0x64
Mar 26 02:27:14 ROUTER [ 4698.694693]  [<f89961ed>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER nf_ct_invert_tuple+0x63/0x6f [nf_conntrack]
Mar 26 02:27:14 ROUTER [ 4698.694693]  [<f8996cca>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER nf_conntrack_tuple_taken+0xf8/0x100 [nf_conntrack]
Mar 26 02:27:14 ROUTER [ 4698.694693]  [<f899850c>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER __nf_ct_helper_find+0x2c/0x90 [nf_conntrack]
Mar 26 02:27:14 ROUTER [ 4698.694693]  [<f8996b95>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER nf_conntrack_alter_reply+0x4a/0x87 [nf_conntrack]
Mar 26 02:27:14 ROUTER [ 4698.694693]  [<f8974976>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER nf_nat_setup_info+0x3cc/0x55a [nf_nat]
Mar 26 02:27:14 ROUTER [ 4698.694693]  [<c011701c>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER dequeue_rt_entity+0x88/0x171
Mar 26 02:27:14 ROUTER [ 4698.694693]  [<c0117127>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER dequeue_rt_stack+0x22/0x27
Mar 26 02:27:14 ROUTER [ 4698.694693]  [<c0117425>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER enqueue_task_rt+0x19/0x2c
Mar 26 02:27:14 ROUTER [ 4698.694693]  [<c011617f>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER enqueue_task+0xd/0x18
Mar 26 02:27:14 ROUTER [ 4698.694693]  [<c01161c0>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER activate_task+0x1e/0x2b
Mar 26 02:27:14 ROUTER [ 4698.694693]  [<c0119bb1>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER try_to_wake_up+0x8f/0xd1
Mar 26 02:27:14 ROUTER [ 4698.694693]  [<c0119c1b>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER wake_up_process+0xf/0x11
Mar 26 02:27:14 ROUTER [ 4698.694693]  [<c013dfa1>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER softlockup_tick+0x9d/0x10b
Mar 26 02:27:14 ROUTER [ 4698.694693]  [<c0126f5c>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER run_local_timers+0x17/0x19
Mar 26 02:27:14 ROUTER [ 4698.694693]  [<c01272fa>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER update_process_times+0x24/0x49
Mar 26 02:27:14 ROUTER [ 4698.694693]  [<c0135f4c>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER tick_periodic+0x62/0x6e
Mar 26 02:27:14 ROUTER [ 4698.694693]  [<c0135f71>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER tick_handle_periodic+0x19/0x68
Mar 26 02:27:14 ROUTER [ 4698.694693]  [<c010e87b>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER smp_apic_timer_interrupt+0x6c/0x81
Mar 26 02:27:14 ROUTER [ 4698.694693]  [<c0104344>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER apic_timer_interrupt+0x28/0x30
Mar 26 02:27:14 ROUTER [ 4698.694693]  [<c02ad202>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER _spin_lock_bh+0x20/0x22
Mar 26 02:27:14 ROUTER [ 4698.694693]  [<c02751fa>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER rt_garbage_collect+0x132/0x27a
Mar 26 02:27:14 ROUTER [ 4698.694693]  [<c0262d95>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER dst_alloc+0x19/0x63
Mar 26 02:27:14 ROUTER [ 4698.694693]  [<c0276eb1>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER ip_route_input+0x6b9/0xbd9
Mar 26 02:27:14 ROUTER [ 4698.694693]  [<c0278898>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER ip_rcv_finish+0x2c/0x29a
Mar 26 02:27:14 ROUTER [ 4698.694693]  [<c0278ef8>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER ip_rcv+0x202/0x22c
Mar 26 02:27:14 ROUTER [ 4698.694693]  [<c025ee4e>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER netif_receive_skb+0x33e/0x3a9
Mar 26 02:27:14 ROUTER [ 4698.694693]  [<c02612c2>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER process_backlog+0x62/0xb5
Mar 26 02:27:14 ROUTER [ 4698.694693]  [<c0260d27>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER net_rx_action+0x8f/0x191
Mar 26 02:27:14 ROUTER [ 4698.694694]  [<c01240a7>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER __do_softirq+0x64/0xcd
Mar 26 02:27:14 ROUTER [ 4698.694694]  [<c0105f0a>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER do_softirq+0x55/0x89
Mar 26 02:27:14 ROUTER [ 4698.694694]  [<c0123f88>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER local_bh_enable+0x61/0x6d
Mar 26 02:27:14 ROUTER [ 4698.694694]  [<c0257689>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER lock_sock_nested+0x83/0x8b
Mar 26 02:27:14 ROUTER [ 4698.694694]  [<c0292e58>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER udp_destroy_sock+0xd/0x20
Mar 26 02:27:14 ROUTER [ 4698.694694]  [<c0257b9e>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER sk_common_release+0x15/0x60
Mar 26 02:27:14 ROUTER [ 4698.694694]  [<c02924a4>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER udp_lib_close+0x8/0xa
Mar 26 02:27:14 ROUTER [ 4698.694694]  [<c0299006>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER inet_release+0x42/0x48
Mar 26 02:27:14 ROUTER [ 4698.694694]  [<c025625b>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER sock_release+0x14/0x60
Mar 26 02:27:14 ROUTER [ 4698.694694]  [<c02565d9>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER sock_close+0x29/0x30
Mar 26 02:27:14 ROUTER [ 4698.694694]  [<c015a6a2>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER __fput+0x93/0x135
Mar 26 02:27:14 ROUTER [ 4698.694694]  [<c015a8e2>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER fput+0x17/0x19
Mar 26 02:27:14 ROUTER [ 4698.694694]  [<c01583dc>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER filp_close+0x47/0x51
Mar 26 02:27:14 ROUTER [ 4698.694694]  [<c0159414>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER sys_close+0x68/0x9d
Mar 26 02:27:14 ROUTER [ 4698.694694]  [<c0103876>] 
Mar 26 02:27:14 ROUTER ? 
Mar 26 02:27:14 ROUTER sysenter_past_esp+0x5f/0x85
Mar 26 02:27:14 ROUTER [ 4698.694694]  =======================
Mar 26 02:27:14 ROUTER [ 4698.694694] Code: 
Mar 26 02:27:14 ROUTER 94 
Mar 26 02:27:14 ROUTER c0 
Mar 26 02:27:14 ROUTER 84 
Mar 26 02:27:14 ROUTER c0 
Mar 26 02:27:14 ROUTER b9 
Mar 26 02:27:14 ROUTER 01 
Mar 26 02:27:14 ROUTER 00 
Mar 26 02:27:14 ROUTER 00 
Mar 26 02:27:14 ROUTER 00 
Mar 26 02:27:14 ROUTER 75 
Mar 26 02:27:14 ROUTER 09 
Mar 26 02:27:14 ROUTER f0 
Mar 26 02:27:14 ROUTER 81 
Mar 26 02:27:14 ROUTER 02 
Mar 26 02:27:14 ROUTER 00 
Mar 26 02:27:14 ROUTER 00 
Mar 26 02:27:14 ROUTER 00 
Mar 26 02:27:14 ROUTER 01 
Mar 26 02:27:14 ROUTER 30 
Mar 26 02:27:14 ROUTER c9 
Mar 26 02:27:14 ROUTER 5d 
Mar 26 02:27:14 ROUTER 89 
Mar 26 02:27:14 ROUTER c8 
Mar 26 02:27:14 ROUTER c3 
Mar 26 02:27:14 ROUTER 55 
Mar 26 02:27:14 ROUTER ba 
Mar 26 02:27:14 ROUTER 00 
Mar 26 02:27:14 ROUTER 01 
Mar 26 02:27:14 ROUTER 00 
Mar 26 02:27:14 ROUTER 00 
Mar 26 02:27:14 ROUTER 89 
Mar 26 02:27:14 ROUTER e5 
Mar 26 02:27:14 ROUTER f0 
Mar 26 02:27:14 ROUTER 66 
Mar 26 02:27:14 ROUTER 0f 
Mar 26 02:27:14 ROUTER c1 
Mar 26 02:27:14 ROUTER 10 
Mar 26 02:27:14 ROUTER 38 
Mar 26 02:27:14 ROUTER f2 
Mar 26 02:27:14 ROUTER 74 
Mar 26 02:27:14 ROUTER 06 
Mar 26 02:27:14 ROUTER f3 
Mar 26 02:27:14 ROUTER 90 
Mar 26 02:27:14 ROUTER unparseable log message: "<8a> "
Mar 26 02:27:14 ROUTER 10 
Mar 26 02:27:14 ROUTER eb 
Mar 26 02:27:14 ROUTER f6 
Mar 26 02:27:14 ROUTER 5d 
Mar 26 02:27:14 ROUTER c3 
Mar 26 02:27:14 ROUTER 55 
Mar 26 02:27:14 ROUTER 89 
Mar 26 02:27:14 ROUTER e5 
Mar 26 02:27:14 ROUTER f0 
Mar 26 02:27:14 ROUTER 81 
Mar 26 02:27:14 ROUTER 28 
Mar 26 02:27:14 ROUTER 00 
Mar 26 02:27:14 ROUTER 00 
Mar 26 02:27:14 ROUTER 00 
Mar 26 02:27:14 ROUTER 01 
Mar 26 02:27:14 ROUTER 74 
Mar 26 02:27:14 ROUTER 05 
Mar 26 02:27:14 ROUTER e8 
Mar 26 02:27:14 ROUTER 64 
Mar 26 02:27:14 ROUTER fd 
Mar 26 02:27:14 ROUTER 



--
Denys Fedoryshchenko
Technical Manager
Virtual ISP S.A.L.