BUG: scheduling while atomic: swapper/0/0x10010000
Modules linked in: ppp_deflate zlib_deflate bsd_comp ppp_async crc_ccitt binfmt_misc ppdev cdc_phonet phonet cdc_acm rndis_wlan rndis_host cdc_ether usbnet mii snd_hda_codec_idt 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 snd_seq_midi_event snd_seq uvcvideo joydev snd_timer snd_seq_device videodev mac80211 v4l1_compat snd soundcore dell_wmi cfg80211 led_class snd_page_alloc dell_laptop dcdbas psmouse serio_raw iptable_filter ip_tables x_tables lp parport usbhid fbcon tileblit font bitblit softcursor sky2 usb_storage i915 drm i2c_algo_bit video output intel_agp agpgart [last unloaded: ssb]

Pid: 0, comm: swapper Not tainted (2.6.31-14-generic #48-Ubuntu) Inspiron 1545                   
EIP: 0060:[<c03699d4>] EFLAGS: 00000286 CPU: 1
EIP is at acpi_idle_enter_bm+0x255/0x286
EAX: c080fe04 EBX: 0000201e ECX: ffc2f606 EDX: 01fcc000
ESI: 00000000 EDI: f6840cc0 EBP: f707df70 ESP: f707df48
 DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
CR0: 8005003b CR2: b6244000 CR3: 361dd000 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