BUG: scheduling while atomic: swapper/0/0x10010000
Modules linked in: ipt_MASQUERADE xt_state ipt_REJECT xt_tcpudp nf_nat_h323 nf_conntrack_h323 nf_nat_pptp nf_conntrack_pptp nf_conntrack_proto_gre nf_nat_proto_gre nf_nat_tftp nf_conntrack_tftp nf_nat_sip nf_conntrack_sip nf_nat_irc nf_conntrack_irc nf_nat_ftp nf_conntrack_ftp iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 hidp binfmt_misc ppdev bridge stp bnep snd_hda_codec_atihdmi snd_hda_codec_idt arc4 ecb snd_hda_intel snd_pcm_oss snd_mixer_oss snd_hda_codec joydev iwlagn iwlcore snd_hwdep snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi iptable_filter snd_rawmidi snd_seq_midi_event snd_seq snd_timer uvcvideo videodev snd_seq_device ip_tables psmouse v4l1_compat mac80211 snd dell_wmi btusb sdhci_pci sdhci led_class serio_raw ricoh_mmc dell_laptop soundcore snd_page_alloc x_tables cfg80211 lp dcdbas parport usbhid ohci1394 radeon tg3 ttm ieee1394 drm i2c_algo_bit video output intel_agp agpgart

Pid: 0, comm: swapper Not tainted (2.6.31-14-generic #48-Ubuntu) Studio 1555
EIP: 0060:[<c03699d4>] EFLAGS: 00000206 CPU: 1
EIP is at acpi_idle_enter_bm+0x255/0x286
EAX: c080fe04 EBX: 00000ab9 ECX: ffc2f606 EDX: 01fd4000
ESI: 00000000 EDI: f70234c0 EBP: f707df70 ESP: f707df48
 DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
CR0: 8005003b CR2: f8803524 CR3: 36519000 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