Seeing this on a Dell Latitude E6530 - kernel lives for just a few seconds before committing hari-kiri trying to initialize the sound chipset.

lspci reports the following audio devices:

00:1b.0 Audio device: Intel Corporation 7 Series/C210 Series Chipset Family High Definition Audio Controller (rev 04) 01:00.1 Audio device: NVIDIA Corporation GF108 High Definition Audio Controller (rev a1)

Is working fine in next-20140618

This ring any bells, before I start doing a git bisect?

[ 2.467707] netconsole: network logging started [ 2.467790] rtc_cmos 00:01: setting system clock to 2014-06-30 15:09:43 UTC (1404140983) [ 2.468008] BUG: unable to handle kernel NULL pointer dereference at (null) [ 2.468077] IP: [<ffffffff8128c97d>] __list_add+0x6e/0x13c [ 2.468122] PGD 0 [ 2.468143] Oops: 0000 [#1] PREEMPT SMP [ 2.468185] Modules linked in: [ 2.468214] CPU: 2 PID: 84 Comm: kworker/2:2 Not tainted 3.16.0-rc3-next-20140630 #244 [ 2.468244] ALSA device list: [ 2.468245] No soundcards found. [ 2.468307] Hardware name: Dell Inc. Latitude E6530/07Y85M, BIOS A14 01/13/2014 [ 2.468311] Workqueue: events azx_probe_work [ 2.468313] task: ffff8802237f12d0 ti: ffff8802237f4000 task.ti: ffff8802237f4000 [ 2.468316] RIP: 0010:[<ffffffff8128c97d>] [<ffffffff8128c97d>] __list_add+0x6e/0x13c [ 2.468318] RSP: 0018:ffff8802237f7b60 EFLAGS: 00010206 [ 2.468319] RAX: ffff880223752dd0 RBX: 0000000000000000 RCX: 0000000000000000 [ 2.468320] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff81d2a3e0 [ 2.468322] RBP: ffff8802237f7b88 R08: ffff880223752d00 R09: 000000000000ffff [ 2.468323] R10: ffff8802237f7ad8 R11: 00000000fffffffe R12: ffffffff81ea4e40 [ 2.468324] R13: ffff880223752d00 R14: 0000000000000000 R15: ffff88003f99fb00 [ 2.468326] FS: 0000000000000000(0000) GS:ffff88022dd00000(0000) knlGS:0000000000000000 [ 2.468327] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.468328] CR2: 0000000000000000 CR3: 0000000001c10000 CR4: 00000000001407e0 [ 2.468329] Stack: [ 2.468332] ffff88003f99f040 ffffffff81ea4e40 0000000000000000 ffffffff81b47254 [ 2.468336] ffff88003f99fb80 ffff8802237f7bb0 ffffffff814670a8 0000000000000000 [ 2.468339] ffff88003f8e9000 ffffffff818ba498 ffff8802237f7bc0 ffffffff8148c830 [ 2.468340] Call Trace: [ 2.468345] [<ffffffff814670a8>] _snd_ctl_add_slave+0xb6/0xbf [ 2.468349] [<ffffffff8148c830>] snd_ctl_add_slave+0xb/0xd [ 2.468352] [<ffffffff8148c71d>] map_slaves+0xb4/0xec [ 2.468354] [<ffffffff8148c825>] ? snd_hda_enum_helper_info+0x4b/0x4b [ 2.468358] [<ffffffff8148d9a0>] __snd_hda_add_vmaster+0x9b/0xfc [ 2.468361] [<ffffffff81499c9e>] snd_hda_gen_build_controls+0xff/0x1ab [ 2.468365] [<ffffffff81491a63>] snd_hda_codec_build_controls+0x38/0x196 [ 2.468368] [<ffffffff81491bed>] snd_hda_build_controls+0x2c/0x87 [ 2.468370] [<ffffffff81496c4e>] azx_mixer_create+0x10/0x12 [ 2.468373] [<ffffffff814a2c06>] azx_probe_work+0x3db/0x519 [ 2.468378] [<ffffffff81057523>] process_one_work+0x296/0x4b8 [ 2.468381] [<ffffffff81057f2c>] worker_thread+0x3fc/0x54e [ 2.468384] [<ffffffff81057b30>] ? cancel_delayed_work+0xb7/0xb7 [ 2.468387] [<ffffffff8105dbfc>] kthread+0xd6/0xde [ 2.468390] [<ffffffff8105db26>] ? __kthread_parkme+0x62/0x62 [ 2.468394] [<ffffffff8168bfac>] ret_from_fork+0x7c/0xb0 [ 2.468396] [<ffffffff8105db26>] ? __kthread_parkme+0x62/0x62 [ 2.468443] Code: be 1d 00 00 00 48 c7 c2 f4 51 b0 81 48 c7 c7 41 52 b0 81 31 c0 e8 d3 0d db ff 31 d2 44 89 f6 48 c7 c7 e0 a3 d2 81 e8 62 ca e4 ff <4c> 39 23 48 c7 c7 b8 a3 d2 81 41 0f 95 c7 31 d2 45 0f b6 f7 44 [ 2.468445] RIP [<ffffffff8128c97d>] __list_add+0x6e/0x13c [ 2.468446] RSP <ffff8802237f7b60> [ 2.468447] CR2: 0000000000000000 [ 2.468449] ---[ end trace 2ff29d6bc6a184d4 ]--- [ 2.605416] tsc: Refined TSC clocksource calibration: 2691.263 MHz [ 2.687337] usb 1-1: new high-speed USB device number 2 using ehci-pci [ 2.741253] ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 300) [ 2.742914] ata2.00: ATAPI: MATSHITA DVD+/-RW UJ8C2, 1.02, max UDMA/133 [ 2.744350] ata2.00: configured for UDMA/133 [ 2.745510] scsi 1:0:0:0: CD-ROM MATSHITA DVD+-RW UJ8C2 1.02 PQ: 0 ANSI: 5 [ 2.804514] usb 1-1: New USB device found, idVendor=8087, idProduct=0024 [ 2.804545] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 2.804909] hub 1-1:1.0: USB hub found [ 2.805005] hub 1-1:1.0: 6 ports detected [ 2.908047] usb 2-1: new high-speed USB device number 2 using ehci-pci [ 3.024199] usb 2-1: New USB device found, idVendor=8087, idProduct=0024 [ 3.024253] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 3.024612] hub 2-1:1.0: USB hub found [ 3.024694] hub 2-1:1.0: 8 ports detected [ 3.179680] usb 3-1: new low-speed USB device number 2 using xhci_hcd [ 3.358523] usb 3-1: New USB device found, idVendor=045e, idProduct=0023 [ 3.358578] usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [ 3.358634] usb 3-1: Product: Microsoft Trackball Optical® [ 3.358678] usb 3-1: Manufacturer: Microsoft [ 3.358930] usb 3-1: ep 0x81 - rounding interval to 64 microframes, ep desc says 80 microframes [ 3.365460] input: Microsoft Microsoft Trackball Optical® as /devices/pci0000:00/0000:00:14.0/usb3/3-1/3-1:1.0/0003:045E:0023.0001/input/input9 [ 3.365884] hid-generic 0003:045E:0023.0001: input,hidraw0: USB HID v1.00 Mouse [Microsoft Microsoft Trackball Optical®] on usb-0000:00:14.0-1/input0 [ 3.518233] usb 3-4: new high-speed USB device number 3 using xhci_hcd [ 4.742601] Switched to clocksource tsc [ 4.742844] kworker/2:2 (84) used greatest stack depth: 11888 bytes left [ 4.743118] BUG: unable to handle kernel paging request at ffffffffffffffa8 [ 4.746083] IP: [<ffffffff8105dfd2>] kthread_data+0xc/0x11 [ 4.749966] PGD 1c11067 PUD 1c13067 PMD 0 [ 4.754807] Oops: 0000 [#2] PREEMPT SMP [ 4.759798] Modules linked in: [ 4.764668] CPU: 2 PID: 84 Comm: kworker/2:2 Tainted: G D 3.16.0-rc3-next-20140630 #244 [ 4.769503] Hardware name: Dell Inc. Latitude E6530/07Y85M, BIOS A14 01/13/2014 [ 4.774468] task: ffff8802237f12d0 ti: ffff8802237f4000 task.ti: ffff8802237f4000 [ 4.779351] RIP: 0010:[<ffffffff8105dfd2>] [<ffffffff8105dfd2>] kthread_data+0xc/0x11 [ 4.784250] RSP: 0018:ffff8802237f77a0 EFLAGS: 00010002 [ 4.789373] RAX: 0000000000000000 RBX: ffff88022dd13d00 RCX: 000000000000000f [ 4.794280] RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffff8802237f12d0 [ 4.799157] RBP: ffff8802237f77c8 R08: ffff88022dd13da8 R09: ffffffff81ea3000 [ 4.804085] R10: ffff8802237f7650 R11: ffff8802249ac780 R12: 0000000000000000 [ 4.808950] R13: 0000000000000002 R14: 0000000000000040 R15: ffff8802237f7898 [ 4.813761] FS: 0000000000000000(0000) GS:ffff88022dd00000(0000) knlGS:0000000000000000 [ 4.818642] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 4.823588] CR2: 0000000000000028 CR3: 0000000001c10000 CR4: 00000000001407e0 [ 4.828539] Stack: [ 4.833335] ffffffff81058150 ffff88022dd13d00 0000000000000000 0000000000000002 [ 4.838307] 0000000000000040 ffff8802237f7838 ffffffff8168639f ffff8802237f7fd8 [ 4.843246] ffff8802237f12d0 ffff8802249ac780 0000000000013d00 ffff88022dd13d00 [ 4.848167] Call Trace: [ 4.853149] [<ffffffff81058150>] ? wq_worker_sleeping+0x13/0x105 [ 4.858028] [<ffffffff8168639f>] __schedule+0x2a3/0xa91 [ 4.862946] [<ffffffff81686bf1>] schedule+0x64/0x66 [ 4.867860] [<ffffffff8103f119>] do_exit+0xbbf/0xc0c [ 4.872616] [<ffffffff8107fc72>] ? arch_local_irq_save+0x9/0xc [ 4.877432] [<ffffffff8100577f>] oops_end+0x7c/0x81 [ 4.882219] [<ffffffff8102f336>] no_context+0x25c/0x2b0 [ 4.887043] [<ffffffff8102f3f9>] __bad_area_nosemaphore+0x6f/0x1fe [ 4.892019] [<ffffffff8102f596>] bad_area_nosemaphore+0xe/0x10 [ 4.897024] [<ffffffff8102f955>] __do_page_fault+0x3bd/0x724 [ 4.901834] [<ffffffff81081c77>] ? mark_lock+0x2a/0x203 [ 4.906643] [<ffffffff810829a6>] ? __lock_acquire+0x68c/0xed1 [ 4.911611] [<ffffffff810d89c4>] ? time_hardirqs_off+0x1b/0x2f [ 4.916428] [<ffffffff8107ff5a>] ? trace_hardirqs_off_caller+0x4c/0xb9 [ 4.921245] [<ffffffff81282e0a>] ? trace_hardirqs_off_thunk+0x3a/0x3c [ 4.926095] [<ffffffff8102fcc8>] do_page_fault+0xc/0xe [ 4.930911] [<ffffffff8168dc52>] page_fault+0x22/0x30 [ 4.935712] [<ffffffff8128c97d>] ? __list_add+0x6e/0x13c [ 4.940601] [<ffffffff814670a8>] _snd_ctl_add_slave+0xb6/0xbf [ 4.945404] [<ffffffff8148c830>] snd_ctl_add_slave+0xb/0xd [ 4.950219] [<ffffffff8148c71d>] map_slaves+0xb4/0xec [ 4.954877] [<ffffffff8148c825>] ? snd_hda_enum_helper_info+0x4b/0x4b [ 4.959733] [<ffffffff8148d9a0>] __snd_hda_add_vmaster+0x9b/0xfc [ 4.964346] [<ffffffff81499c9e>] snd_hda_gen_build_controls+0xff/0x1ab [ 4.968948] [<ffffffff81491a63>] snd_hda_codec_build_controls+0x38/0x196 [ 4.973562] [<ffffffff81491bed>] snd_hda_build_controls+0x2c/0x87 [ 4.978178] [<ffffffff81496c4e>] azx_mixer_create+0x10/0x12 [ 4.982693] [<ffffffff814a2c06>] azx_probe_work+0x3db/0x519 [ 4.987371] [<ffffffff81057523>] process_one_work+0x296/0x4b8 [ 4.991806] [<ffffffff81057f2c>] worker_thread+0x3fc/0x54e [ 4.996432] [<ffffffff81057b30>] ? cancel_delayed_work+0xb7/0xb7 [ 5.000828] [<ffffffff8105dbfc>] kthread+0xd6/0xde [ 5.005151] [<ffffffff8105db26>] ? __kthread_parkme+0x62/0x62 [ 5.009500] [<ffffffff8168bfac>] ret_from_fork+0x7c/0xb0 [ 5.013921] [<ffffffff8105db26>] ? __kthread_parkme+0x62/0x62 [ 5.018307] Code: 48 8b 04 25 80 b9 00 00 48 8b 80 d8 04 00 00 48 89 e5 5d 48 8b 40 98 48 c1 e8 02 83 e0 01 c3 48 8b 87 d8 04 00 00 55 48 89 e5 5d <48> 8b 40 a8 c3 55 ba 08 00 00 00 48 89 e5 50 48 8b b7 d8 04 00 [ 5.023570] RIP [<ffffffff8105dfd2>] kthread_data+0xc/0x11 [ 5.028173] RSP <ffff8802237f77a0> [ 5.032760] CR2: ffffffffffffffa8 [ 5.037505] ---[ end trace 2ff29d6bc6a184d5 ]--- [ 5.211674] Fixing recursive fault but reboot is needed! [ 5.216280] BUG: scheduling while atomic: kworker/2:2/84/0x00000004 [ 5.220852] INFO: lockdep is turned off. [ 5.225435] Modules linked in: [ 5.230060] irq event stamp: 4640 [ 5.234609] hardirqs last enabled at (4639): [<ffffffff8113286a>] __kmalloc+0x94/0x10d [ 5.239246] hardirqs last disabled at (4640): [<ffffffff8168de43>] error_sti+0x5/0x6 [ 5.244073] softirqs last enabled at (4294): [<ffffffff81041faa>] __do_softirq+0x2ab/0x403 [ 5.248509] softirqs last disabled at (4255): [<ffffffff810423a5>] irq_exit+0x4c/0xbb [ 5.253019] CPU: 2 PID: 84 Comm: kworker/2:2 Tainted: G D 3.16.0-rc3-next-20140630 #244 [ 5.257493] Hardware name: Dell Inc. Latitude E6530/07Y85M, BIOS A14 01/13/2014 [ 5.261861] 0000000000000000 ffff8802237f73f0 ffffffff81680ccb ffff8802237f12d0 [ 5.266268] 0000000000000001 ffff8802237f7408 ffffffff8106667f ffff88022dd13d00 [ 5.270961] ffff8802237f7478 ffffffff816861b6 ffff8802237f7fd8 ffff8802237f12d0 [ 5.275445] Call Trace: [ 5.279729] [<ffffffff81680ccb>] dump_stack+0x51/0xaa [ 5.284243] [<ffffffff8106667f>] __schedule_bug+0x5e/0x6d [ 5.288769] [<ffffffff816861b6>] __schedule+0xba/0xa91 [ 5.293159] [<ffffffff81686bf1>] schedule+0x64/0x66 [ 5.297348] [<ffffffff8103e700>] do_exit+0x1a6/0xc0c [ 5.301489] [<ffffffff8107fc72>] ? arch_local_irq_save+0x9/0xc [ 5.305667] [<ffffffff81090e0b>] ? __rcu_read_unlock+0xf2/0xf9 [ 5.309791] [<ffffffff8108ab84>] ? kmsg_dump+0x18b/0x194 [ 5.313868] [<ffffffff8100577f>] oops_end+0x7c/0x81 [ 5.317922] [<ffffffff8102f336>] no_context+0x25c/0x2b0 [ 5.321983] [<ffffffff8102f3f9>] __bad_area_nosemaphore+0x6f/0x1fe [ 5.326018] [<ffffffff8102f596>] bad_area_nosemaphore+0xe/0x10 [ 5.330032] [<ffffffff8102f955>] __do_page_fault+0x3bd/0x724 [ 5.334012] [<ffffffff81083554>] ? lock_acquire+0xc1/0x14e [ 5.337966] [<ffffffff810d89c4>] ? time_hardirqs_off+0x1b/0x2f [ 5.341895] [<ffffffff8168de43>] ? error_sti+0x5/0x6 [ 5.345767] [<ffffffff8107ff2d>] ? trace_hardirqs_off_caller+0x1f/0xb9 [ 5.349649] [<ffffffff81282e0a>] ? trace_hardirqs_off_thunk+0x3a/0x3c [ 5.353528] [<ffffffff8102fcc8>] do_page_fault+0xc/0xe [ 5.357389] [<ffffffff8168dc52>] page_fault+0x22/0x30 [ 5.361234] [<ffffffff8105dfd2>] ? kthread_data+0xc/0x11 [ 5.365089] [<ffffffff81058150>] ? wq_worker_sleeping+0x13/0x105 [ 5.368997] [<ffffffff8168639f>] __schedule+0x2a3/0xa91 [ 5.372809] [<ffffffff81686bf1>] schedule+0x64/0x66 [ 5.376729] [<ffffffff8103f119>] do_exit+0xbbf/0xc0c [ 5.380532] [<ffffffff8107fc72>] ? arch_local_irq_save+0x9/0xc [ 5.384415] [<ffffffff8100577f>] oops_end+0x7c/0x81 [ 5.388189] [<ffffffff8102f336>] no_context+0x25c/0x2b0 [ 5.392030] [<ffffffff8102f3f9>] __bad_area_nosemaphore+0x6f/0x1fe [ 5.396037] [<ffffffff8102f596>] bad_area_nosemaphore+0xe/0x10 [ 5.400019] [<ffffffff8102f955>] __do_page_fault+0x3bd/0x724 [ 5.403823] [<ffffffff81081c77>] ? mark_lock+0x2a/0x203 [ 5.407624] [<ffffffff810829a6>] ? __lock_acquire+0x68c/0xed1 [ 5.411405] [<ffffffff810d89c4>] ? time_hardirqs_off+0x1b/0x2f [ 5.415209] [<ffffffff8107ff5a>] ? trace_hardirqs_off_caller+0x4c/0xb9 [ 5.419107] [<ffffffff81282e0a>] ? trace_hardirqs_off_thunk+0x3a/0x3c [ 5.422894] [<ffffffff8102fcc8>] do_page_fault+0xc/0xe [ 5.426916] [<ffffffff8168dc52>] page_fault+0x22/0x30 [ 5.430708] [<ffffffff8128c97d>] ? __list_add+0x6e/0x13c [ 5.434489] [<ffffffff814670a8>] _snd_ctl_add_slave+0xb6/0xbf [ 5.438290] [<ffffffff8148c830>] snd_ctl_add_slave+0xb/0xd [ 5.442229] [<ffffffff8148c71d>] map_slaves+0xb4/0xec [ 5.446010] [<ffffffff8148c825>] ? snd_hda_enum_helper_info+0x4b/0x4b [ 5.450140] [<ffffffff8148d9a0>] __snd_hda_add_vmaster+0x9b/0xfc [ 5.453932] [<ffffffff81499c9e>] snd_hda_gen_build_controls+0xff/0x1ab [ 5.457821] [<ffffffff81491a63>] snd_hda_codec_build_controls+0x38/0x196 [ 5.461724] [<ffffffff81491bed>] snd_hda_build_controls+0x2c/0x87 [ 5.465524] [<ffffffff81496c4e>] azx_mixer_create+0x10/0x12 [ 5.469319] [<ffffffff814a2c06>] azx_probe_work+0x3db/0x519 [ 5.473161] [<ffffffff81057523>] process_one_work+0x296/0x4b8 [ 5.476952] [<ffffffff81057f2c>] worker_thread+0x3fc/0x54e [ 5.480734] [<ffffffff81057b30>] ? cancel_delayed_work+0xb7/0xb7 [ 5.484603] [<ffffffff8105dbfc>] kthread+0xd6/0xde [ 5.488415] [<ffffffff8105db26>] ? __kthread_parkme+0x62/0x62 [ 5.492334] [<ffffffff8168bfac>] ret_from_fork+0x7c/0xb0 [ 5.496116] [<ffffffff8105db26>] ? __kthread_parkme+0x62/0x62 [ 56.430656] Kernel panic - not syncing: Watchdog detected hard LOCKUP on cpu 2 [ 57.577582] Shutting down cpus with NMI [ 57.580830] Kernel Offset: 0x0 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffff9fffffff)