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[Bug 934812] Re: WARNING: at /build/buildd/linux-3.0.0/net/sched/sch_generic.c:255 dev_watchdog+0x1e6/0x1f0()

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: Launchpad Bug Tracker <934812@xxxxxxxxxxxxxxxxxx>
Date: Mon, 20 Jan 2014 04:17:21 -0000
Reply-to: Bug 934812 <934812@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
[Expired for linux (Ubuntu) because there has been no activity for 60
days.]

** Changed in: linux (Ubuntu)
       Status: Incomplete => Expired

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Title:
  WARNING: at /build/buildd/linux-3.0.0/net/sched/sch_generic.c:255
  dev_watchdog+0x1e6/0x1f0()

Status in The Linux Kernel:
  Incomplete
Status in “linux” package in Ubuntu:
  Expired

Bug description:
  I have a Toshiba laptop (Satellite A65) with a built-in Ethernet
  adapter, running Ubuntu Oneiric with the stock kernel 3.0.0-16.28.
  After some time in operation, while the system is in use, the network
  connection stops working and I find the following in /var/log/syslog:

  Feb 18 02:20:44 lemon kernel: [12023.008097] ------------[ cut here ]------------
  Feb 18 02:20:44 lemon kernel: [12023.008129] WARNING: at /build/buildd/linux-3.0.0/net/sched/sch_generic.c:255 dev_watchdog+0x1e6/0x1f0()
  Feb 18 02:20:44 lemon kernel: [12023.008138] Hardware name: Satellite A65
  Feb 18 02:20:44 lemon kernel: [12023.008146] NETDEV WATCHDOG: eth0 (8139too): transmit queue 0 timed out
  Feb 18 02:20:44 lemon kernel: [12023.008152] Modules linked in: ppdev pcmcia snd_atiixp_modem snd_atiixp snd_ac97_codec ac97_bus snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device snd psmouse yenta_socket serio_raw pcmcia_rsrc pcmcia_core pcspkr soundcore snd_page_alloc joydev radeon ttm parport_pc drm_kms_helper drm i2c_algo_bit video i2c_piix4 shpchp ati_agp lp parport usbhid hid 8139too 8139cp pata_atiixp
  Feb 18 02:20:44 lemon kernel: [12023.008276] Pid: 0, comm: swapper Not tainted 3.0.0-16-generic #28-Ubuntu
  Feb 18 02:20:44 lemon kernel: [12023.008285] Call Trace:
  Feb 18 02:20:44 lemon kernel: [12023.008306]  [<c1047cd2>] warn_slowpath_common+0x72/0xa0
  Feb 18 02:20:44 lemon kernel: [12023.008319]  [<c14546a6>] ? dev_watchdog+0x1e6/0x1f0
  Feb 18 02:20:44 lemon kernel: [12023.008332]  [<c14546a6>] ? dev_watchdog+0x1e6/0x1f0
  Feb 18 02:20:44 lemon kernel: [12023.008346]  [<c1047da3>] warn_slowpath_fmt+0x33/0x40
  Feb 18 02:20:44 lemon kernel: [12023.008359]  [<c14546a6>] dev_watchdog+0x1e6/0x1f0
  Feb 18 02:20:44 lemon kernel: [12023.008377]  [<c1054c1f>] call_timer_fn+0x2f/0x110
  Feb 18 02:20:44 lemon kernel: [12023.008394]  [<c152e8bd>] ? _raw_spin_lock_irqsave+0x2d/0x40
  Feb 18 02:20:44 lemon kernel: [12023.008410]  [<c10ae98d>] ? force_qs_rnp+0xfd/0x140
  Feb 18 02:20:44 lemon kernel: [12023.008423]  [<c14544c0>] ? qdisc_reset+0x40/0x40
  Feb 18 02:20:44 lemon kernel: [12023.008437]  [<c105631b>] run_timer_softirq+0xeb/0x210
  Feb 18 02:20:44 lemon kernel: [12023.008448]  [<c14544c0>] ? qdisc_reset+0x40/0x40
  Feb 18 02:20:44 lemon kernel: [12023.008464]  [<c104e900>] ? local_bh_enable_ip+0x90/0x90
  Feb 18 02:20:44 lemon kernel: [12023.008476]  [<c104e900>] ? local_bh_enable_ip+0x90/0x90
  Feb 18 02:20:44 lemon kernel: [12023.008487]  [<c104e981>] __do_softirq+0x81/0x1a0
  Feb 18 02:20:44 lemon kernel: [12023.008501]  [<c104e900>] ? local_bh_enable_ip+0x90/0x90
  Feb 18 02:20:44 lemon kernel: [12023.008510]  <IRQ>  [<c104ecc6>] ? irq_exit+0x76/0xa0
  Feb 18 02:20:44 lemon kernel: [12023.008531]  [<c1535ec9>] ? smp_apic_timer_interrupt+0x59/0x88
  Feb 18 02:20:44 lemon kernel: [12023.008545]  [<c1056ef5>] ? get_next_timer_interrupt+0x75/0xf0
  Feb 18 02:20:44 lemon kernel: [12023.008556]  [<c152ef29>] ? apic_timer_interrupt+0x31/0x38
  Feb 18 02:20:44 lemon kernel: [12023.008569]  [<c107007b>] ? sysctl_check_table+0x19b/0x240
  Feb 18 02:20:44 lemon kernel: [12023.008585]  [<c1009aec>] ? mwait_idle+0x7c/0x1d0
  Feb 18 02:20:44 lemon kernel: [12023.008598]  [<c100175a>] ? cpu_idle+0x8a/0xc0
  Feb 18 02:20:44 lemon kernel: [12023.008611]  [<c1501a75>] ? rest_init+0x5d/0x68
  Feb 18 02:20:44 lemon kernel: [12023.008628]  [<c17c1763>] ? start_kernel+0x352/0x358
  Feb 18 02:20:44 lemon kernel: [12023.008642]  [<c17c13a2>] ? pass_bootoption.constprop.2+0xe2/0xe2
  Feb 18 02:20:44 lemon kernel: [12023.008655]  [<c17c10a9>] ? i386_start_kernel+0xa9/0xaf
  Feb 18 02:20:44 lemon kernel: [12023.008663] ---[ end trace e4b87fe15e496637 ]---
  Feb 18 02:20:47 lemon kernel: [12026.016082] 8139too 0000:02:07.0: eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
  Feb 18 02:20:59 lemon kernel: [12038.016067] 8139too 0000:02:07.0: eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
  Feb 18 02:21:11 lemon kernel: [12050.016074] 8139too 0000:02:07.0: eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
  Feb 18 02:21:23 lemon kernel: [12062.016072] 8139too 0000:02:07.0: eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
  Feb 18 02:21:35 lemon kernel: [12074.016070] 8139too 0000:02:07.0: eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
  Feb 18 02:21:47 lemon kernel: [12086.016055] 8139too 0000:02:07.0: eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
  Feb 18 02:21:59 lemon kernel: [12098.016086] 8139too 0000:02:07.0: eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
  Feb 18 02:22:11 lemon kernel: [12110.016069] 8139too 0000:02:07.0: eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
  Feb 18 02:22:23 lemon kernel: [12122.016223] 8139too 0000:02:07.0: eth0: link up, 100Mbps, full-duplex, lpa 0x45E1

  Unloading/reloading the 8139too/8139cp modules doesn't help at that point, only rebooting. Seeing as the logged stack trace goes through some SMP-related functions, I am currently running this system with the "nosmp" kernel parameter and so far that appears to be keeping this bug at bay.
  --- 
  ApportVersion: 1.23-0ubuntu4
  Architecture: i386
  DistroRelease: Ubuntu 11.10
  Package: linux (not installed)
  ProcEnviron:
   PATH=(custom, user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  Tags:  oneiric
  Uname: Linux 3.2.13-030213-generic i686
  UnreportableReason: The running kernel is not an Ubuntu kernel
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm audio cdrom dialout floppy plugdev video

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