[18446744058.496026] BUG: unable to handle kernel NULL pointer dereference at (null)
[18446744058.496036] IP: [<(null)>] (null)
[18446744058.496041] PGD 11f372067 PUD 130dcb067 PMD 0 
[18446744058.496048] Oops: 0010 [#1] SMP 
[18446744058.496052] last sysfs file: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/ACPI0003:00/power_supply/ACAD/online
[18446744058.496057] CPU 0 
[18446744058.496059] Modules linked in: binfmt_misc parport_pc ppdev snd_hda_codec_atihdmi joydev snd_hda_codec_realtek snd_hda_intel snd_hda_codec arc4 snd_hwdep snd_pcm ath9k snd_seq_midi psmouse snd_rawmidi ath9k_common ath9k_hw ath snd_seq_midi_event fglrx(P) snd_seq snd_timer lp mac80211 snd_seq_device cfg80211 uvcvideo videodev serio_raw parport snd intel_agp video v4l1_compat v4l2_compat_ioctl32 output led_class intel_ips soundcore snd_page_alloc ahci libahci atl1c
[18446744058.496109] 
[18446744058.496114] Pid: 751, comm: ips-adjust Tainted: P            2.6.35-22-generic #33-Ubuntu ZR7B/Aspire 5820TG
[18446744058.496118] RIP: 0010:[<0000000000000000>]  [<(null)>] (null)
[18446744058.496125] RSP: 0018:ffff880130f2de78  EFLAGS: 00010202
[18446744058.496126] RAX: 0000000000000286 RBX: ffff8801308fa000 RCX: 0000000000000064
[18446744058.496128] RDX: 000000000000ffff RSI: 0000000000000286 RDI: 0000000000000286
[18446744058.496130] RBP: ffff880130f2dee0 R08: 0000000000000000 R09: 0000000000000000
[18446744058.496131] R10: 00000000ffffffff R11: 0000000000000001 R12: ffff8801308fa040
[18446744058.496133] R13: 0000000000000000 R14: 0000000000002328 R15: 0000000000000000
[18446744058.496135] FS:  0000000000000000(0000) GS:ffff880001e00000(0000) knlGS:0000000000000000
[18446744058.496137] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[18446744058.496138] CR2: 0000000000000000 CR3: 000000012760e000 CR4: 00000000000006f0
[18446744058.496140] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[18446744058.496142] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[18446744058.496144] Process ips-adjust (pid: 751, threadinfo ffff880130f2c000, task ffff880130ea44a0)
[18446744058.496145] Stack:
[18446744058.496146]  ffffffffa003bc03 ffff880130f2dfd8 ffff880130f2deac ffffffff81a32020
[18446744058.496149] <0> ffff88010000089c 0000000000000286 00000001313d3be8 ffff880130f2dee0
[18446744058.496151] <0> ffff8801313d3bc8 ffff880130f2def8 ffffffffa003b8c0 ffff8801308fa000
[18446744058.496155] Call Trace:
[18446744058.496161]  [<ffffffffa003bc03>] ? ips_adjust+0x343/0x490 [intel_ips]
[18446744058.496165]  [<ffffffffa003b8c0>] ? ips_adjust+0x0/0x490 [intel_ips]
[18446744058.496170]  [<ffffffff8107f0b6>] kthread+0x96/0xa0
[18446744058.496174]  [<ffffffff8100aee4>] kernel_thread_helper+0x4/0x10
[18446744058.496176]  [<ffffffff8107f020>] ? kthread+0x0/0xa0
[18446744058.496178]  [<ffffffff8100aee0>] ? kernel_thread_helper+0x0/0x10
[18446744058.496180] Code:  Bad RIP value.
[18446744058.496184] RIP  [<(null)>] (null)
[18446744058.496185]  RSP <ffff880130f2de78>
[18446744058.496186] CR2: 0000000000000000
[18446744058.496189] ---[ end trace 4fe6929c4d0272ec ]---