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[James Hamilton <ubuntu@xxxxxxxxxxxxxxx>]

Public bug reported:

This problem started one minute after the leap second was inserted.  A
reboot cleared the issue.  I thought this issue had been fixed a while
back.

uname -a: Linux myth1204 3.2.0-26-generic #40-Ubuntu SMP Wed May 23
20:30:51 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

kern.log
=======
Jun 30 17:59:59 myth1204 kernel: [139461.320299] Clock: inserting leap second 23:59:60 UTC
Jun 30 18:01:01 myth1204 kernel: [139523.736001] BUG: soft lockup - CPU#0 stuck for 28s! [ksoftirqd/0:3]
Jun 30 18:01:01 myth1204 kernel: [139523.736001] Modules linked in: udf crc_itu_t cx18_alsa mxl5005s s5h1409 tuner_simple tuner_types cs5345 tda9887 tda8290 tuner snd_hda_codec_via snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event cx18 dvb_core snd_seq cx2341x videobuf_vmalloc videobuf_core tveeprom v4l2_common videodev psmouse i915 drm_kms_helper drm snd_timer i2c_algo_bit v4l2_compat_ioctl32 mac_hid asus_atk0110 snd_seq_device video snd soundcore snd_page_alloc lp serio_raw parport e1000e
Jun 30 18:01:01 myth1204 kernel: [139523.736001] Pid: 3, comm: ksoftirqd/0 Not tainted 3.2.0-26-generic #41-Ubuntu
Jun 30 18:01:01 myth1204 kernel: [139523.736001] Call Trace:
Jun 30 18:01:01 myth1204 kernel: [139523.736001]  [<ffffffff810d7e78>] watchdog_timer_fn+0x178/0x180
Jun 30 18:01:01 myth1204 kernel: [139523.736001]  [<ffffffff8108ed18>] __run_hrtimer+0x78/0x1f0
Jun 30 18:01:01 myth1204 kernel: [139523.736001]  [<ffffffff810d7d00>] ? __touch_watchdog+0x30/0x30
Jun 30 18:01:01 myth1204 kernel: [139523.736001]  [<ffffffff8101a779>] ? read_tsc+0x9/0x20
Jun 30 18:01:01 myth1204 kernel: [139523.736001]  [<ffffffff8108f5a3>] hrtimer_interrupt+0xe3/0x200
Jun 30 18:01:01 myth1204 kernel: [139523.736001]  [<ffffffff8108f6eb>] __hrtimer_peek_ahead_timers.part.26+0x2b/0x30
Jun 30 18:01:01 myth1204 kernel: [139523.736001]  [<ffffffff8108f735>] hrtimer_peek_ahead_timers+0x45/0x50
Jun 30 18:01:01 myth1204 kernel: [139523.736001]  [<ffffffff8108f74e>] run_hrtimer_softirq+0xe/0x10
Jun 30 18:01:01 myth1204 kernel: [139523.736001]  [<ffffffff8106ea58>] __do_softirq+0xa8/0x210
Jun 30 18:01:01 myth1204 kernel: [139523.736001]  [<ffffffff8106ec7a>] run_ksoftirqd+0xba/0x170
Jun 30 18:01:01 myth1204 kernel: [139523.736001]  [<ffffffff8106ebc0>] ? __do_softirq+0x210/0x210
Jun 30 18:01:01 myth1204 kernel: [139523.736001]  [<ffffffff8108a59c>] kthread+0x8c/0xa0
Jun 30 18:01:01 myth1204 kernel: [139523.736001]  [<ffffffff81664134>] kernel_thread_helper+0x4/0x10
Jun 30 18:01:01 myth1204 kernel: [139523.736001]  [<ffffffff8108a510>] ? flush_kthread_worker+0xa0/0xa0
Jun 30 18:01:01 myth1204 kernel: [139523.736001]  [<ffffffff81664130>] ? gs_change+0x13/0x13
========

** Affects: mythbuntu
     Importance: Undecided
         Status: New

-- 
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https://bugs.launchpad.net/bugs/1019828

Title:
   BUG: soft lockup - CPU#0 stuck for 28s! [ksoftirqd/0:3]

Status in Mythbuntu, Ubuntu derivative focused upon MythTV:
  New

Bug description:
  This problem started one minute after the leap second was inserted.  A
  reboot cleared the issue.  I thought this issue had been fixed a while
  back.

  uname -a: Linux myth1204 3.2.0-26-generic #40-Ubuntu SMP Wed May 23
  20:30:51 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

  kern.log
  =======
  Jun 30 17:59:59 myth1204 kernel: [139461.320299] Clock: inserting leap second 23:59:60 UTC
  Jun 30 18:01:01 myth1204 kernel: [139523.736001] BUG: soft lockup - CPU#0 stuck for 28s! [ksoftirqd/0:3]
  Jun 30 18:01:01 myth1204 kernel: [139523.736001] Modules linked in: udf crc_itu_t cx18_alsa mxl5005s s5h1409 tuner_simple tuner_types cs5345 tda9887 tda8290 tuner snd_hda_codec_via snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event cx18 dvb_core snd_seq cx2341x videobuf_vmalloc videobuf_core tveeprom v4l2_common videodev psmouse i915 drm_kms_helper drm snd_timer i2c_algo_bit v4l2_compat_ioctl32 mac_hid asus_atk0110 snd_seq_device video snd soundcore snd_page_alloc lp serio_raw parport e1000e
  Jun 30 18:01:01 myth1204 kernel: [139523.736001] Pid: 3, comm: ksoftirqd/0 Not tainted 3.2.0-26-generic #41-Ubuntu
  Jun 30 18:01:01 myth1204 kernel: [139523.736001] Call Trace:
  Jun 30 18:01:01 myth1204 kernel: [139523.736001]  [<ffffffff810d7e78>] watchdog_timer_fn+0x178/0x180
  Jun 30 18:01:01 myth1204 kernel: [139523.736001]  [<ffffffff8108ed18>] __run_hrtimer+0x78/0x1f0
  Jun 30 18:01:01 myth1204 kernel: [139523.736001]  [<ffffffff810d7d00>] ? __touch_watchdog+0x30/0x30
  Jun 30 18:01:01 myth1204 kernel: [139523.736001]  [<ffffffff8101a779>] ? read_tsc+0x9/0x20
  Jun 30 18:01:01 myth1204 kernel: [139523.736001]  [<ffffffff8108f5a3>] hrtimer_interrupt+0xe3/0x200
  Jun 30 18:01:01 myth1204 kernel: [139523.736001]  [<ffffffff8108f6eb>] __hrtimer_peek_ahead_timers.part.26+0x2b/0x30
  Jun 30 18:01:01 myth1204 kernel: [139523.736001]  [<ffffffff8108f735>] hrtimer_peek_ahead_timers+0x45/0x50
  Jun 30 18:01:01 myth1204 kernel: [139523.736001]  [<ffffffff8108f74e>] run_hrtimer_softirq+0xe/0x10
  Jun 30 18:01:01 myth1204 kernel: [139523.736001]  [<ffffffff8106ea58>] __do_softirq+0xa8/0x210
  Jun 30 18:01:01 myth1204 kernel: [139523.736001]  [<ffffffff8106ec7a>] run_ksoftirqd+0xba/0x170
  Jun 30 18:01:01 myth1204 kernel: [139523.736001]  [<ffffffff8106ebc0>] ? __do_softirq+0x210/0x210
  Jun 30 18:01:01 myth1204 kernel: [139523.736001]  [<ffffffff8108a59c>] kthread+0x8c/0xa0
  Jun 30 18:01:01 myth1204 kernel: [139523.736001]  [<ffffffff81664134>] kernel_thread_helper+0x4/0x10
  Jun 30 18:01:01 myth1204 kernel: [139523.736001]  [<ffffffff8108a510>] ? flush_kthread_worker+0xa0/0xa0
  Jun 30 18:01:01 myth1204 kernel: [139523.736001]  [<ffffffff81664130>] ? gs_change+0x13/0x13
  ========

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