------------[ cut here ]------------
WARNING: at /build/buildd/linux-2.6.31/net/sched/sch_generic.c:246 dev_watchdog+0x1f6/0x210()
Hardware name: HP Compaq 6530b (GB976EA#ABZ)
NETDEV WATCHDOG: usb0 (plusb): transmit queue 0 timed out
Modules linked in: lp snd_hda_codec_analog snd_hda_intel snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi usblp snd_seq_midi_event arc4 snd_seq ecb ppdev hp_accel parport_pc iwlagn dm_crypt snd_timer iwlcore lis3lv02d tpm_infineon snd_seq_device iptable_filter joydev tpm parport input_polldev tpm_bios asix plusb ip_tables snd led_class mac80211 usbnet psmouse x_tables uvcvideo videodev soundcore pl2303 usbserial snd_page_alloc v4l1_compat mii cfg80211 serio_raw squashfs aufs nls_cp437 isofs dm_raid45 xor fbcon tileblit font bitblit softcursor ohci1394 ieee1394 tg3 i915 drm i2c_algo_bit video output intel_agp agpgart
Pid: 0, comm: swapper Not tainted 2.6.31-14-generic #48-Ubuntu
Call Trace:
 [<c014518d>] warn_slowpath_common+0x6d/0xa0
 [<c04b07c6>] ? dev_watchdog+0x1f6/0x210
 [<c04b07c6>] ? dev_watchdog+0x1f6/0x210
 [<c0145206>] warn_slowpath_fmt+0x26/0x30
 [<c04b07c6>] dev_watchdog+0x1f6/0x210
 [<c0157fdb>] ? insert_work+0x5b/0xa0
 [<c0127c38>] ? default_spin_lock_flags+0x8/0x10
 [<c05707da>] ? _spin_lock_irqsave+0x2a/0x40
 [<c0158371>] ? __queue_work+0x31/0x40
 [<c01501b7>] run_timer_softirq+0x117/0x200
 [<c01699f4>] ? tick_handle_oneshot_broadcast+0x124/0x130
 [<c04b05d0>] ? dev_watchdog+0x0/0x210
 [<c014b3b0>] __do_softirq+0x90/0x1a0
 [<c018f8fc>] ? handle_IRQ_event+0x4c/0x140
 [<c01925a4>] ? move_native_irq+0x14/0x50
 [<c014b4fd>] do_softirq+0x3d/0x40
 [<c014b63d>] irq_exit+0x5d/0x70
 [<c0104f10>] do_IRQ+0x50/0xc0
 [<c01039b0>] common_interrupt+0x30/0x40
 [<c0369b02>] ? acpi_idle_enter_simple+0xfd/0x130
 [<c0468406>] cpuidle_idle_call+0x76/0xd0
 [<c010202c>] cpu_idle+0x8c/0xd0
 [<c056c096>] start_secondary+0xc6/0xc8
---[ end trace c8155b6e354ded42 ]---