BUG: scheduling while atomic: swapper/0/0x10010000
Modules linked in: michael_mic arc4 ecb binfmt_misc ppdev snd_hda_codec_idt snd_hda_codec_intelhdmi joydev snd_hda_intel snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss lib80211_crypt_tkip snd_pcm uvcvideo snd_seq_dummy snd_seq_oss wl(P) sdhci_pci sdhci videodev snd_seq_midi snd_rawmidi lib80211 v4l1_compat snd_seq_midi_event snd_seq led_class snd_timer snd_seq_device snd psmouse dell_wmi dell_laptop lp serio_raw dcdbas soundcore iptable_filter ip_tables snd_page_alloc x_tables parport dm_raid45 xor fbcon tileblit font bitblit softcursor usbhid ohci1394 sky2 ieee1394 i915 drm i2c_algo_bit intel_agp agpgart video output

Pid: 0, comm: swapper Tainted: P           (2.6.31-14-generic #48-Ubuntu) Inspiron 1525                   
EIP: 0060:[<c03699d4>] EFLAGS: 00000202 CPU: 1
EIP is at acpi_idle_enter_bm+0x255/0x286
EAX: c080fe04 EBX: 00003137 ECX: ffc2f606 EDX: 0203a000
ESI: 00000000 EDI: f68414c0 EBP: f707df70 ESP: f707df48
 DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
CR0: 8005003b CR2: 0a26246c CR3: 0081a000 CR4: 000406d0
DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
DR6: ffff0ff0 DR7: 00000400
Call Trace:
 [<c0468406>] cpuidle_idle_call+0x76/0xd0
 [<c010202c>] cpu_idle+0x8c/0xd0
 [<c056c096>] start_secondary+0xc6/0xc8