BUG: Unable to handle kernel NULL pointer dereference at 0000000000000008
IP: [<ffffffff8103ed46>] delayed_work_timer_fn+0x16/0x30
PGD 20e73a067 PUD 20e512067 PMD 0
Oops: 0000 [#1] SMP
CPU 1
Modules linked in: loop snd_hda_codec_hdmi snd_hda_codec_idt arc4 snd_hda_intel snd_hda_codec uvcvideo snd_pcm usb_storage ath9k ath9k_common snd_page_alloc videobuf2_vmalloc video2buf_memops snd_seq videobuf2_core snd_seq_device videodev ath9k_hw snd_timer hp_wmi psmouse ath mac80211snd k10temp cfg80211 r8169 mii soundcore hp_accel lis3lv02d input_polldev wmi video

Pid: 0, comm: swapper/1 Not tainted 3.4.0 #1 Hewlett-Packard Pavilion dv7 Notebook PC/1443
RIP: 0010:[<ffffffff8103ed46>]  [<ffffffff8103ed46>] delayed_work_timer_fn+0x16/0x30
RSP: 0018:ffff88021fc83e88  EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8802164b5fd8 RCX: 0000000000000000
RDX: ffff880213e78478 RSI: 0000000000000500 RDI: ffff880213e78478
RBP: ffff88021fc83ea0 R08: dead000000200200 R09: 0000000000000004
R10: 0000000000000000 R11: 0000000000000020 R12: ffff8802164b5fd8
R13: ffffffff8103ed30 R14: 0000000000000100 R15: ffff8802164ac000
FS:  00007fb16ff1f980(0000) GS:ffff88021fc80000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 0000000000000008 CR3: 0000000214dbf000 CR4: 00000000000007e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process swapper/1 (pid: 0, threadinfo ffff8802164ad420, task ffff88021fc83ea0)
Stack:
 ffffffff810342c6 ffff8802164ad020 ffff8802164ad420 ffff88021fc83ea0
 ffff88021fc83ea0 ffffffff8105cbf5 0000000000000041 ffffffff8156c088
 ffff8802164b5fd8 0000000000000100 0000000000000001 0000000000000001
Call Trace:
 <IRQ>
 [<ffffffff810342c6>] ? run_timer_softirq+0x106/0x220
 [<ffffffff8105cbf5>] ? tick_handle_oneshot_broadcast+0xb5/0xe0
 [<ffffffff8102f19d>] ? __do_softirq+0x8d/0x110
 [<ffffffff81069559>] ? handle_irq_event_percpu+0x79/0x140
 [<ffffffff813dfa4c>] ? call_softirq+0x1c/0x26
 [<ffffffff81003a8d>] ? do_softirq+0x4d/0x80
 [<ffffffff8102f495>] ? irq_exit+0xa5/0xb0
 [<ffffffff8100372b>] ? do_IRQ+0x5b/0xd0
 [<ffffffff813de1e7>] ? common_interrupt+0x67/0x67
 <EOI>
 [<ffffffff81009e60>] ? default_idle+0x20/0x40
 [<ffffffff81009ff8>] ? amd_e400_idle+0xa8/0xf0
 [<ffffffff8100a7a6>] ? cpu_idle+0xb6/0xd0
Code: 8b 7c 24 50 48 83 c4 58 c3 66 66 66 2e 0f 1f 84 00 00 00 00 00 48 8b 0f 31 c0 48 89 fa 48 89 ce 40 80 e6 00 83 e1 04 48 0f 45 c6 <48> 8b 70 08 65 8b 3c 25 60 cc 00 00 e9 b9 fc ff ff 66 0f 1f 84
RIP  [<ffffffff8103ed46>] delayed_work_timer_fn+0x16/0x30
 RSP <ffff88021fc83e88>
CR2: 0000000000000008
Kernel panic - not syncing: Fatal exception in interrupt
panic occurred, switching back to text console