BUG: scheduling while atomic: swapper/0/0x10010000
Modules linked in: binfmt_misc ppdev snd_hda_codec_idt snd_hda_codec_intelhdmi 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 b43 snd_seq_midi_event joydev uvcvideo snd_seq mac80211 sdhci_pci iptable_filter sdhci snd_timer snd_seq_device dell_wmi ip_tables psmouse videodev v4l1_compat snd serio_raw soundcore v4l2_compat_ioctl32 dell_laptop cfg80211 snd_page_alloc lp x_tables led_class dcdbas parport fbcon tileblit font bitblit softcursor ohci1394 ssb ieee1394 i915 drm i2c_algo_bit video output sky2 intel_agp
CPU 1:
Modules linked in: binfmt_misc ppdev snd_hda_codec_idt snd_hda_codec_intelhdmi 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 b43 snd_seq_midi_event joydev uvcvideo snd_seq mac80211 sdhci_pci iptable_filter sdhci snd_timer snd_seq_device dell_wmi ip_tables psmouse videodev v4l1_compat snd serio_raw soundcore v4l2_compat_ioctl32 dell_laptop cfg80211 snd_page_alloc lp x_tables led_class dcdbas parport fbcon tileblit font bitblit softcursor ohci1394 ssb ieee1394 i915 drm i2c_algo_bit video output sky2 intel_agp
Pid: 0, comm: swapper Not tainted 2.6.31-14-generic #48-Ubuntu Inspiron 1525                   
RIP: 0010:[<ffffffff812d7ed9>]  [<ffffffff812d7ed9>] acpi_idle_enter_bm+0x28b/0x2bf
RSP: 0018:ffff88007d39fe98  EFLAGS: 00000207
RAX: 00000000000103f0 RBX: ffff88007d39fee8 RCX: 0000000000000000
RDX: ffff880001a12000 RSI: 00000011493201a7 RDI: ffff880001a28240
RBP: ffffffff81012a0e R08: ffffffffff3aa7e4 R09: ffff88007d399018
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000002b2a
R13: ffff88007d39fe38 R14: ffffffff81082147 R15: ffff88007d39fe08
FS:  0000000000000000(0000) GS:ffff880001a12000(0000) knlGS:0000000000000000
CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
CR2: 00007fd8d78abf90 CR3: 0000000001001000 CR4: 00000000000006e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 [<ffffffff812d7ed2>] ? acpi_idle_enter_bm+0x284/0x2bf
 [<ffffffff813fe40b>] ? cpuidle_idle_call+0x9b/0xf0
 [<ffffffff81010e12>] ? cpu_idle+0xb2/0x100
 [<ffffffff815239f6>] ? start_secondary+0xa9/0xab