[ 1075.686758] BUG: unable to handle kernel NULL pointer dereference at 0000000000000170
[ 1075.686852] IP: [<ffffffffa05409f5>] azx_runtime_resume+0x15/0x120 [snd_hda_intel]
[ 1075.686938] PGD 0 
[ 1075.686965] Oops: 0000 [#1] SMP 
[ 1075.687010] Modules linked in: snd_hda_intel(+) snd_seq_midi snd_seq_midi_event snd_seq snd_rawmidi snd_seq_device rfcomm bnep bluetooth binfmt_misc snd_hda_codec_hdmi coretemp hp_wmi sparse_keymap xt_tcpudp nf_conntrack_ipv4 nf_defrag_ipv4 snd_hda_codec_analog xt_conntrack nf_conntrack iptable_filter ip_tables x_tables arc4 snd_hda_codec snd_hwdep snd_pcm snd_page_alloc microcode uvcvideo videobuf2_vmalloc b43 psmouse videobuf2_memops radeon serio_raw videobuf2_core bcma videodev snd_timer joydev mac80211 ttm lpc_ich drm_kms_helper cfg80211 snd drm i2c_algo_bit soundcore wmi hp_accel lis3lv02d input_polldev video mac_hid hid_generic usbhid hid ahci libahci sky2 ssb [last unloaded: snd_hda_intel]
[ 1075.687871] CPU: 0 PID: 11386 Comm: modprobe Not tainted 3.13.0-15-generic #35-Ubuntu
[ 1075.687940] Hardware name: Hewlett-Packard HP ProBook 4510s/3074, BIOS 68PZI Ver. F.0A 08/03/2009
[ 1075.688022] task: ffff880139b50000 ti: ffff8801380a8000 task.ti: ffff8801380a8000
[ 1075.688086] RIP: 0010:[<ffffffffa05409f5>]  [<ffffffffa05409f5>] azx_runtime_resume+0x15/0x120 [snd_hda_intel]
[ 1075.688191] RSP: 0018:ffff8801380a9a98  EFLAGS: 00010286
[ 1075.688238] RAX: 0000000000000000 RBX: ffff8801396c5098 RCX: 0000000000000022
[ 1075.688302] RDX: 000000010002f50e RSI: 0000000000260024 RDI: ffff8801396c5098
[ 1075.688366] RBP: ffff8801380a9ab8 R08: 0000000000000202 R09: 0000000000000000
[ 1075.688430] R10: 00000000000060af R11: ffffffff8148bc30 R12: ffff8801396c5140
[ 1075.688494] R13: ffffffffa05409e0 R14: ffff88013954a098 R15: 0000000000000004
[ 1075.688558] FS:  00007f7283e60740(0000) GS:ffff88013fc00000(0000) knlGS:00000
[ 1075.688635] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 1075.688684] CR2: 0000000000000170 CR3: 00000001378d4000 CR4: 00000000000007f0
[ 1075.688745] Stack:
[ 1075.688772]  ffff8801396c5098 ffff8801396c5140 ffffffffa05409e0 ffff88013954a
[ 1075.688860]  ffff8801380a9ae8 ffffffff814938b6 ffff880100000001 ffff8801396c5
[ 1075.688946]  ffff8801396c5140 ffff88013954a140 ffff8801380a9b10 ffffffff81493
[ 1075.689030] Call Trace:
[ 1075.689066]  [<ffffffffa05409e0>] ? azx_init_chip.part.31+0x300/0x300 [snd_hd
[ 1075.689141]  [<ffffffff814938b6>] __rpm_callback+0x36/0xc0
[ 1075.689191]  [<ffffffff81493964>] rpm_callback+0x24/0x80
[ 1075.689244]  [<ffffffff8149499e>] rpm_resume+0x4de/0x6d0
[ 1075.689303]  [<ffffffff8119c412>] ? kmem_cache_alloc+0x132/0x140
[ 1075.689367]  [<ffffffff8122d8d9>] ? sysfs_new_dirent+0x59/0x130
[ 1075.689421]  [<ffffffff8122d1c5>] ? sysfs_link_sibling+0xb5/0xe0
[ 1075.689477]  [<ffffffff81494bdf>] __pm_runtime_resume+0x4f/0x80
[ 1075.689534]  [<ffffffff8139bc52>] local_pci_probe+0x32/0xa0
[ 1075.689589]  [<ffffffff8139cf05>] ? pci_match_device+0xc5/0xd0
[ 1075.689647]  [<ffffffff8139d029>] pci_device_probe+0xd9/0x130
[ 1075.689699]  [<ffffffff81488285>] driver_probe_device+0x125/0x3b0
[ 1075.689757]  [<ffffffff814885e3>] __driver_attach+0x93/0xa0
[ 1075.689812]  [<ffffffff81488550>] ? __device_attach+0x40/0x40
[ 1075.689865]  [<ffffffff814861f3>] bus_for_each_dev+0x63/0xa0
[ 1075.689917]  [<ffffffff81487c3e>] driver_attach+0x1e/0x20
[ 1075.689971]  [<ffffffff81487820>] bus_add_driver+0x180/0x250
[ 1075.690036]  [<ffffffffa043e168>] ? ftrace_define_fields_azx_get_position+0xc
[ 1075.690117]  [<ffffffff81488c64>] driver_register+0x64/0xf0
[ 1075.690174]  [<ffffffffa043e168>] ? ftrace_define_fields_azx_get_position+0xc
[ 1075.690629]  [<ffffffff8139b5fc>] __pci_register_driver+0x4c/0x50
[ 1075.690629]  [<ffffffffa043e186>] azx_driver_init+0x1e/0xe98 [snd_hda_intel]
[ 1075.690629]  [<ffffffff8100214a>] do_one_initcall+0xfa/0x1b0
[ 1075.690629]  [<ffffffff81056d23>] ? set_memory_nx+0x43/0x50
[ 1075.690629]  [<ffffffff810deb3d>] load_module+0x12dd/0x1b40
[ 1075.690629]  [<ffffffff810da5c0>] ? store_uevent+0x40/0x40
[ 1075.690629]  [<ffffffff810df516>] SyS_finit_module+0x86/0xb0
[ 1075.690629]  [<ffffffff8171f1ff>] tracesys+0xe1/0xe6
[ 1075.690629] Code: ff ff 4c 8b 80 a8 00 00 00 eb d3 66 66 2e 0f 1f 84 00 00 0000 41 f6 84 24 e5 01 00 00 20 0f 85 bc 00 00 
[ 1075.690629] RIP  [<ffffffffa05409f5>] azx_runtime_resume+0x15/0x120 [snd_hda_
[ 1075.690629]  RSP <ffff8801380a9a98>
[ 1075.690629] CR2: 0000000000000170
[ 1075.738647] ---[ end trace 4a178cf399cf4561 ]---