Same error here, Natty amd64. I can see this error especially when I unplug the network cable.
[ 115.060011] ------------[ cut here ]------------ [ 115.060020] WARNING: at /build/buildd/linux-2.6.38/net/sched/sch_generic.c:256 dev_watchdog+0x2a0/0x2b0() [ 115.060023] Hardware name: System Product Name [ 115.060025] NETDEV WATCHDOG: eth0 (8139too): transmit queue 0 timed out [ 115.060027] Modules linked in: binfmt_misc iptable_filter ip_tables x_tables snd_hda_codec_realtek nvidia(P) snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event ppdev snd_seq parport_pc snd_timer snd_seq_device asus_atk0110 psmouse snd serio_raw soundcore nv_tco i2c_nforce2 snd_page_alloc lp parport uvesafb ahci floppy firewire_ohci 8139too 8139cp libahci firewire_core crc_itu_t sata_nv pata_amd [ 115.060061] Pid: 0, comm: swapper Tainted: P 2.6.38-8-generic #42-Ubuntu [ 115.060064] Call Trace: [ 115.060066] <IRQ> [<ffffffff81065cef>] ? warn_slowpath_common+0x7f/0xc0 [ 115.060074] [<ffffffff81065de6>] ? warn_slowpath_fmt+0x46/0x50 [ 115.060077] [<ffffffff814ef450>] ? dev_watchdog+0x2a0/0x2b0 [ 115.060082] [<ffffffff81080877>] ? __queue_work+0xf7/0x3d0 [ 115.060085] [<ffffffff8108ea88>] ? sched_clock_cpu+0xa8/0x110 [ 115.060088] [<ffffffff81080b50>] ? delayed_work_timer_fn+0x0/0x40 [ 115.060092] [<ffffffff814ef1b0>] ? dev_watchdog+0x0/0x2b0 [ 115.060095] [<ffffffff81074964>] ? call_timer_fn+0x44/0x130 [ 115.060099] [<ffffffff814ef1b0>] ? dev_watchdog+0x0/0x2b0 [ 115.060102] [<ffffffff81075fb4>] ? run_timer_softirq+0x134/0x280 [ 115.060106] [<ffffffff8102c85d>] ? lapic_next_event+0x1d/0x30 [ 115.060109] [<ffffffff8106d538>] ? __do_softirq+0xa8/0x1c0 [ 115.060113] [<ffffffff810983ef>] ? tick_program_event+0x1f/0x30 [ 115.060116] [<ffffffff8100cf1c>] ? call_softirq+0x1c/0x30 [ 115.060119] [<ffffffff8100ea45>] ? do_softirq+0x65/0xa0 [ 115.060122] [<ffffffff8106d755>] ? irq_exit+0x85/0x90 [ 115.060126] [<ffffffff815cafb0>] ? smp_apic_timer_interrupt+0x70/0x9b [ 115.060129] [<ffffffff8100c9d3>] ? apic_timer_interrupt+0x13/0x20 [ 115.060131] <EOI> [<ffffffff81014a4d>] ? mwait_idle+0x8d/0x120 [ 115.060137] [<ffffffff815c6e8a>] ? atomic_notifier_call_chain+0x1a/0x20 [ 115.060141] [<ffffffff8100a266>] ? cpu_idle+0xa6/0xf0 [ 115.060145] [<ffffffff815a9205>] ? rest_init+0x75/0x80 [ 115.060149] [<ffffffff81acac8b>] ? start_kernel+0x3f5/0x400 [ 115.060153] [<ffffffff81aca388>] ? x86_64_start_reservations+0x132/0x136 [ 115.060156] [<ffffffff81aca253>] ? zap_identity_mappings+0x3e/0x41 [ 115.060159] [<ffffffff81aca458>] ? x86_64_start_kernel+0xcc/0xdb [ 115.060162] ---[ end trace 54f641403b3a92e9 ]---
Same error here, Natty amd64.
I can see this error especially when I unplug the network cable.
[ 115.060011] ------------[ cut here ]------------ buildd/ linux-2. 6.38/net/ sched/sch_ generic. c:256 dev_watchdog+ 0x2a0/0x2b0( ) codec_realtek nvidia(P) snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event ppdev snd_seq parport_pc snd_timer snd_seq_device asus_atk0110 psmouse snd serio_raw soundcore nv_tco i2c_nforce2 snd_page_alloc lp parport uvesafb ahci floppy firewire_ohci 8139too 8139cp libahci firewire_core crc_itu_t sata_nv pata_amd cef>] ? warn_slowpath_ common+ 0x7f/0xc0 de6>] ? warn_slowpath_ fmt+0x46/ 0x50 450>] ? dev_watchdog+ 0x2a0/0x2b0 877>] ? __queue_ work+0xf7/ 0x3d0 a88>] ? sched_clock_ cpu+0xa8/ 0x110 b50>] ? delayed_ work_timer_ fn+0x0/ 0x40 1b0>] ? dev_watchdog+ 0x0/0x2b0 964>] ? call_timer_ fn+0x44/ 0x130 1b0>] ? dev_watchdog+ 0x0/0x2b0 fb4>] ? run_timer_ softirq+ 0x134/0x280 85d>] ? lapic_next_ event+0x1d/ 0x30 538>] ? __do_softirq+ 0xa8/0x1c0 3ef>] ? tick_program_ event+0x1f/ 0x30 f1c>] ? call_softirq+ 0x1c/0x30 a45>] ? do_softirq+ 0x65/0xa0 755>] ? irq_exit+0x85/0x90 fb0>] ? smp_apic_ timer_interrupt +0x70/0x9b 9d3>] ? apic_timer_ interrupt+ 0x13/0x20 a4d>] ? mwait_idle+ 0x8d/0x120 e8a>] ? atomic_ notifier_ call_chain+ 0x1a/0x20 266>] ? cpu_idle+0xa6/0xf0 205>] ? rest_init+0x75/0x80 c8b>] ? start_kernel+ 0x3f5/0x400 388>] ? x86_64_ start_reservati ons+0x132/ 0x136 253>] ? zap_identity_ mappings+ 0x3e/0x41 458>] ? x86_64_ start_kernel+ 0xcc/0xdb
[ 115.060020] WARNING: at /build/
[ 115.060023] Hardware name: System Product Name
[ 115.060025] NETDEV WATCHDOG: eth0 (8139too): transmit queue 0 timed out
[ 115.060027] Modules linked in: binfmt_misc iptable_filter ip_tables x_tables snd_hda_
[ 115.060061] Pid: 0, comm: swapper Tainted: P 2.6.38-8-generic #42-Ubuntu
[ 115.060064] Call Trace:
[ 115.060066] <IRQ> [<ffffffff81065
[ 115.060074] [<ffffffff81065
[ 115.060077] [<ffffffff814ef
[ 115.060082] [<ffffffff81080
[ 115.060085] [<ffffffff8108e
[ 115.060088] [<ffffffff81080
[ 115.060092] [<ffffffff814ef
[ 115.060095] [<ffffffff81074
[ 115.060099] [<ffffffff814ef
[ 115.060102] [<ffffffff81075
[ 115.060106] [<ffffffff8102c
[ 115.060109] [<ffffffff8106d
[ 115.060113] [<ffffffff81098
[ 115.060116] [<ffffffff8100c
[ 115.060119] [<ffffffff8100e
[ 115.060122] [<ffffffff8106d
[ 115.060126] [<ffffffff815ca
[ 115.060129] [<ffffffff8100c
[ 115.060131] <EOI> [<ffffffff81014
[ 115.060137] [<ffffffff815c6
[ 115.060141] [<ffffffff8100a
[ 115.060145] [<ffffffff815a9
[ 115.060149] [<ffffffff81aca
[ 115.060153] [<ffffffff81aca
[ 115.060156] [<ffffffff81aca
[ 115.060159] [<ffffffff81aca
[ 115.060162] ---[ end trace 54f641403b3a92e9 ]---