On 11/11/2015 05:30 AM, Mauro Carvalho Chehab wrote:
> Em Mon, 09 Nov 2015 08:55:06 -0700
> Shuah Khan <shuahkh@xxxxxxxxxxxxxxx> escreveu:
>
>> On 11/09/2015 08:51 AM, Shuah Khan wrote:
>>> As I mentioned on the IRC, here is the log for the problems I am seeing.
>>> I have to do eject HVR 950Q TV stick to see the problem.
>>>
>>> mc_next_gen.v8.4 branch with no changes.
>>>
>>> I can test and debug this week.
>>>
>>> thanks,
>>> -- Shuah
>>>
>>
>> Forgot to cc linux-media, just in case others are interested
>> and have ideas on debugging.
>>
>> thanks,
>> -- Shuah
>
>> [ 8.558049] ======================================================
>> [ 8.558056] [ INFO: possible circular locking dependency detected ]
>> [ 8.558063] 4.2.0-rc2+ #21 Not tainted
>> [ 8.558070] -------------------------------------------------------
>> [ 8.558077] systemd-udevd/143 is trying to acquire lock:
>> [ 8.558084] (init_mutex){+.+.+.}, at: [<ffffffffa0001f36>] acpi_video_get_backlight_type+0x17/0x163 [video]
>> [ 8.558104]
>> but task is already holding lock:
>> [ 8.558114] (&(&backlight_notifier)->rwsem){++++..}, at: [<ffffffff8107fc49>] __blocking_notifier_call_chain+0x39/0x70
>> [ 8.558133]
>> which lock already depends on the new lock.
>>
>> [ 8.558147]
>> the existing dependency chain (in reverse order) is:
>> [ 8.558158]
>> -> #1 (&(&backlight_notifier)->rwsem){++++..}:
>> [ 8.558170] [<ffffffff810b0c61>] lock_acquire+0xb1/0x130
>> [ 8.558180] [<ffffffff817fb006>] down_write+0x36/0x70
>> [ 8.558189] [<ffffffff8107fdc1>] blocking_notifier_chain_register+0x21/0xb0
>> [ 8.558202] [<ffffffff81424c98>] backlight_register_notifier+0x18/0x20
>> [ 8.558212] [<ffffffffa0002019>] acpi_video_get_backlight_type+0xfa/0x163 [video]
>> [ 8.558225] [<ffffffffa000167e>] acpi_video_bus_add+0x686/0xdfa [video]
>> [ 8.558237] [<ffffffff814371b0>] acpi_device_probe+0x50/0xf7
>> [ 8.558247] [<ffffffff814db62d>] driver_probe_device+0x14d/0x470
>> [ 8.558257] [<ffffffff814db9e4>] __driver_attach+0x94/0xa0
>> [ 8.558266] [<ffffffff814d9366>] bus_for_each_dev+0x66/0xa0
>> [ 8.558275] [<ffffffff814daece>] driver_attach+0x1e/0x20
>> [ 8.558287] [<ffffffff814daa4e>] bus_add_driver+0x1ee/0x280
>> [ 8.558296] [<ffffffff814dc280>] driver_register+0x60/0xe0
>> [ 8.558304] [<ffffffff81437936>] acpi_bus_register_driver+0x3b/0x43
>> [ 8.558313] [<ffffffffa0000328>] acpi_video_register+0x6e/0x90 [video]
>> [ 8.558322] [<ffffffffa000b087>] hid_generic_exit+0x87/0x1000 [hid_generic]
>> [ 8.558334] [<ffffffff810002eb>] do_one_initcall+0xab/0x1d0
>> [ 8.558344] [<ffffffff817f317e>] do_init_module+0x60/0x1e9
>> [ 8.558353] [<ffffffff810f1900>] load_module+0x2170/0x2780
>> [ 8.558363] [<ffffffff810f212a>] SyS_finit_module+0x9a/0xc0
>> [ 8.558372] [<ffffffff817fd5d7>] entry_SYSCALL_64_fastpath+0x12/0x6f
>> [ 8.558381]
>> -> #0 (init_mutex){+.+.+.}:
>> [ 8.558392] [<ffffffff810aff59>] __lock_acquire+0x1f29/0x1f90
>> [ 8.558401] [<ffffffff810b0c61>] lock_acquire+0xb1/0x130
>> [ 8.558409] [<ffffffff817f9ceb>] mutex_lock_nested+0x4b/0x340
>> [ 8.558417] [<ffffffffa0001f36>] acpi_video_get_backlight_type+0x17/0x163 [video]
>> [ 8.558430] [<ffffffffa00020ba>] acpi_video_backlight_notify+0x19/0x2f [video]
>> [ 8.558442] [<ffffffff8107faad>] notifier_call_chain+0x5d/0x80
>> [ 8.558451] [<ffffffff8107fc61>] __blocking_notifier_call_chain+0x51/0x70
>> [ 8.558462] [<ffffffff8107fc96>] blocking_notifier_call_chain+0x16/0x20
>> [ 8.558474] [<ffffffff81424ff2>] backlight_device_register+0x1a2/0x260
>> [ 8.558483] [<ffffffffa02af70a>] radeon_atom_backlight_init+0xda/0x1d0 [radeon]
>> [ 8.558543] [<ffffffffa0254713>] radeon_link_encoder_connector+0xc3/0x130 [radeon]
>> [ 8.558585] [<ffffffffa0232b06>] radeon_get_atom_connector_info_from_object_table+0x3a6/0x950 [radeon]
>> [ 8.558625] [<ffffffffa0257e4c>] radeon_modeset_init+0x5dc/0xa40 [radeon]
>> [ 8.558667] [<ffffffffa0230b0b>] radeon_driver_load_kms+0x12b/0x220 [radeon]
>> [ 8.558706] [<ffffffffa0033281>] drm_dev_register+0xb1/0x100 [drm]
>> [ 8.558728] [<ffffffffa003605d>] drm_get_pci_dev+0x8d/0x1e0 [drm]
>> [ 8.558747] [<ffffffffa022c404>] radeon_pci_probe+0xa4/0xc0 [radeon]
>> [ 8.558783] [<ffffffff813f3715>] local_pci_probe+0x45/0xa0
>> [ 8.558792] [<ffffffff813f4911>] pci_device_probe+0xd1/0x120
>> [ 8.558800] [<ffffffff814db62d>] driver_probe_device+0x14d/0x470
>> [ 8.558809] [<ffffffff814db9e4>] __driver_attach+0x94/0xa0
>> [ 8.558818] [<ffffffff814d9366>] bus_for_each_dev+0x66/0xa0
>> [ 8.558827] [<ffffffff814daece>] driver_attach+0x1e/0x20
>> [ 8.558835] [<ffffffff814daa4e>] bus_add_driver+0x1ee/0x280
>> [ 8.558844] [<ffffffff814dc280>] driver_register+0x60/0xe0
>> [ 8.558852] [<ffffffff813f2fd4>] __pci_register_driver+0x64/0x70
>> [ 8.558860] [<ffffffffa0036290>] drm_pci_init+0xe0/0x110 [drm]
>> [ 8.558879] [<ffffffffa039d09d>] radeon_init+0x9d/0xb2 [radeon]
>> [ 8.558911] [<ffffffff810002eb>] do_one_initcall+0xab/0x1d0
>> [ 8.558920] [<ffffffff817f317e>] do_init_module+0x60/0x1e9
>> [ 8.558928] [<ffffffff810f1900>] load_module+0x2170/0x2780
>> [ 8.558937] [<ffffffff810f212a>] SyS_finit_module+0x9a/0xc0
>> [ 8.558945] [<ffffffff817fd5d7>] entry_SYSCALL_64_fastpath+0x12/0x6f
>> [ 8.558954]
>> other info that might help us debug this:
>>
>> [ 8.558968] Possible unsafe locking scenario:
>>
>> [ 8.558978] CPU0 CPU1
>> [ 8.558984] ---- ----
>> [ 8.558989] lock(&(&backlight_notifier)->rwsem);
>> [ 8.558997] lock(init_mutex);
>> [ 8.559004] lock(&(&backlight_notifier)->rwsem);
>> [ 8.559015] lock(init_mutex);
>> [ 8.559021]
>> *** DEADLOCK ***
>>
>> [ 8.559035] 4 locks held by systemd-udevd/143:
>> [ 8.559041] #0: (&dev->mutex){......}, at: [<ffffffff814db99b>] __driver_attach+0x4b/0xa0
>> [ 8.559056] #1: (&dev->mutex){......}, at: [<ffffffff814db9a9>] __driver_attach+0x59/0xa0
>> [ 8.559072] #2: (drm_global_mutex){+.+.+.}, at: [<ffffffffa00331f6>] drm_dev_register+0x26/0x100 [drm]
>> [ 8.559097] #3: (&(&backlight_notifier)->rwsem){++++..}, at: [<ffffffff8107fc49>] __blocking_notifier_call_chain+0x39/0x70
>> [ 8.559113]
>> stack backtrace:
>> [ 8.559124] CPU: 2 PID: 143 Comm: systemd-udevd Not tainted 4.2.0-rc2+ #21
>> [ 8.559132] Hardware name: Hewlett-Packard HP ProBook 6475b/180F, BIOS 68TTU Ver. F.04 08/03/2012
>> [ 8.559143] ffffffff8285ace0 ffff88002b09f378 ffffffff817f4254 ffffffff810c155a
>> [ 8.559156] ffffffff8285ace0 ffff88002b09f3c8 ffffffff810ac6a3 0000000000000003
>> [ 8.559169] ffff88002b09f438 ffff88002b09f3c8 ffff88002b06b398 ffff88002b06a600
>> [ 8.559181] Call Trace:
>> [ 8.559190] [<ffffffff817f4254>] dump_stack+0x45/0x57
>> [ 8.559208] [<ffffffff810c155a>] ? console_unlock+0x1da/0x580
>> [ 8.559216] [<ffffffff810ac6a3>] print_circular_bug+0x1e3/0x250
>> [ 8.559225] [<ffffffff810aff59>] __lock_acquire+0x1f29/0x1f90
>> [ 8.559234] [<ffffffff810b0c61>] lock_acquire+0xb1/0x130
>> [ 8.559243] [<ffffffffa0001f36>] ? acpi_video_get_backlight_type+0x17/0x163 [video]
>> [ 8.559255] [<ffffffff817f9ceb>] mutex_lock_nested+0x4b/0x340
>> [ 8.559264] [<ffffffffa0001f36>] ? acpi_video_get_backlight_type+0x17/0x163 [video]
>> [ 8.559277] [<ffffffffa0001f36>] acpi_video_get_backlight_type+0x17/0x163 [video]
>> [ 8.559289] [<ffffffffa00020ba>] acpi_video_backlight_notify+0x19/0x2f [video]
>> [ 8.559301] [<ffffffff8107faad>] notifier_call_chain+0x5d/0x80
>> [ 8.559310] [<ffffffff8107fc61>] __blocking_notifier_call_chain+0x51/0x70
>> [ 8.559319] [<ffffffff8107fc96>] blocking_notifier_call_chain+0x16/0x20
>> [ 8.559327] [<ffffffff81424ff2>] backlight_device_register+0x1a2/0x260
>> [ 8.559374] [<ffffffffa02af70a>] radeon_atom_backlight_init+0xda/0x1d0 [radeon]
>> [ 8.559416] [<ffffffffa0254713>] radeon_link_encoder_connector+0xc3/0x130 [radeon]
>> [ 8.559455] [<ffffffffa0232b06>] radeon_get_atom_connector_info_from_object_table+0x3a6/0x950 [radeon]
>> [ 8.559481] [<ffffffffa0038c1b>] ? drm_mode_crtc_set_gamma_size+0x5b/0x70 [drm]
>> [ 8.559523] [<ffffffffa0257e4c>] radeon_modeset_init+0x5dc/0xa40 [radeon]
>> [ 8.559566] [<ffffffffa03071d8>] ? radeon_ib_ring_tests+0x58/0xc0 [radeon]
>> [ 8.559601] [<ffffffffa0230b0b>] radeon_driver_load_kms+0x12b/0x220 [radeon]
>> [ 8.559620] [<ffffffffa0033281>] drm_dev_register+0xb1/0x100 [drm]
>> [ 8.559639] [<ffffffffa003605d>] drm_get_pci_dev+0x8d/0x1e0 [drm]
>> [ 8.559674] [<ffffffffa022c404>] radeon_pci_probe+0xa4/0xc0 [radeon]
>> [ 8.559683] [<ffffffff813f3715>] local_pci_probe+0x45/0xa0
>> [ 8.559691] [<ffffffff813f47d0>] ? pci_match_device+0xe0/0x110
>> [ 8.559699] [<ffffffff813f4911>] pci_device_probe+0xd1/0x120
>> [ 8.559708] [<ffffffff814db62d>] driver_probe_device+0x14d/0x470
>> [ 8.559717] [<ffffffff814db9e4>] __driver_attach+0x94/0xa0
>> [ 8.559726] [<ffffffff814db950>] ? driver_probe_device+0x470/0x470
>> [ 8.559734] [<ffffffff814d9366>] bus_for_each_dev+0x66/0xa0
>> [ 8.559743] [<ffffffff814daece>] driver_attach+0x1e/0x20
>> [ 8.559752] [<ffffffff814daa4e>] bus_add_driver+0x1ee/0x280
>> [ 8.559760] [<ffffffff814dc280>] driver_register+0x60/0xe0
>> [ 8.559767] [<ffffffff813f2fd4>] __pci_register_driver+0x64/0x70
>> [ 8.559786] [<ffffffffa0036290>] drm_pci_init+0xe0/0x110 [drm]
>> [ 8.559794] [<ffffffffa039d000>] ? 0xffffffffa039d000
>> [ 8.559825] [<ffffffffa039d09d>] radeon_init+0x9d/0xb2 [radeon]
>> [ 8.559834] [<ffffffff810002eb>] do_one_initcall+0xab/0x1d0
>> [ 8.559843] [<ffffffff817f3146>] ? do_init_module+0x28/0x1e9
>> [ 8.559852] [<ffffffff811c5c3b>] ? kmem_cache_alloc_trace+0xbb/0x160
>> [ 8.559862] [<ffffffff817f317e>] do_init_module+0x60/0x1e9
>> [ 8.559870] [<ffffffff810f1900>] load_module+0x2170/0x2780
>> [ 8.559878] [<ffffffff810edd30>] ? __symbol_put+0x40/0x40
>> [ 8.559888] [<ffffffff810f212a>] SyS_finit_module+0x9a/0xc0
>> [ 8.559897] [<ffffffff817fd5d7>] entry_SYSCALL_64_fastpath+0x12/0x6f
>
> Sorry, but I fail to see how this is related to the V4L2 subsystem.
>
> At least on my eyes, it seems that the bug is somewhere at the Radeon
> driver.
>
Mauro,
I think you didn't look down the dmesg far enough. The following is the
problem I am talking about and you will see media_device_unregister()
on the stack. This occurs as soon as the device is removed.
thanks,
-- Shuah
[ 304.245575] NMI watchdog: BUG: soft lockup - CPU#2 stuck for 22s!
[kworker/2:1:56]
[ 304.245587] Modules linked in: snd_usb_audio snd_usbmidi_lib
snd_seq_midi snd_seq_midi_event snd_seq snd_rawmidi ir_lirc_codec
lirc_dev ir_sony_decoder ir_xmp_decoder ir_sharp_decoder
ir_sanyo_decoder ir_mce_kbd_decoder snd_seq_device ir_jvc_decoder
ir_rc5_decoder ir_rc6_decoder ir_nec_decoder au8522_dig tuner
au8522_decoder au8522_common au0828 tveeprom nf_conntrack_ipv4
nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT nf_reject_ipv4
xt_tcpudp bridge stp llc ebtable_filter ebtables ip6table_filter
ip6_tables iptable_filter ip_tables x_tables binfmt_misc nls_iso8859_1
kvm_amd kvm uvcvideo videobuf2_vmalloc videobuf2_memops
ghash_clmulni_intel videobuf2_core aesni_intel aes_x86_64 ablk_helper
cryptd lrw hp_wmi gf128mul sparse_keymap snd_hda_codec_idt glue_helper
snd_hda_codec_generic snd_hda_codec_hdmi
[ 304.245661] snd_hda_intel microcode snd_hda_codec hp_accel
tpm_infineon snd_hda_core joydev k10temp serio_raw lis3lv02d snd_hwdep
input_polldev snd_pcm tpm_tis snd_timer i2c_piix4 shpchp mac_hid
parport_pc ppdev lp parport autofs4 pl2303 usbserial hid_generic radeon
usbhid psmouse i2c_algo_bit hid firewire_ohci ttm firewire_core
drm_kms_helper sdhci_pci crc_itu_t r8169 sdhci mii drm wmi video
[ 304.245709] irq event stamp: 1850
[ 304.245712] hardirqs last enabled at (1849): [<ffffffff817fce50>]
_raw_spin_unlock_irq+0x30/0x40
[ 304.245722] hardirqs last disabled at (1850): [<ffffffff817fcbe7>]
_raw_spin_lock_irq+0x17/0x50
[ 304.245727] softirqs last enabled at (512): [<ffffffff81799f7d>]
addrconf_verify_rtnl+0x23d/0x500
[ 304.245735] softirqs last disabled at (506): [<ffffffff81799d63>]
addrconf_verify_rtnl+0x23/0x500
[ 304.245744] CPU: 2 PID: 56 Comm: kworker/2:1 Not tainted 4.2.0-rc2+ #21
[ 304.245747] Hardware name: Hewlett-Packard HP ProBook 6475b/180F,
BIOS 68TTU Ver. F.04 08/03/2012
[ 304.245754] Workqueue: usb_hub_wq hub_event
[ 304.245758] task: ffff88021e222600 ti: ffff880218dec000 task.ti:
ffff880218dec000
[ 304.245761] RIP: 0010:[<ffffffff813bf2ea>] [<ffffffff813bf2ea>]
delay_tsc+0x1a/0x50
[ 304.245769] RSP: 0018:ffff880218def938 EFLAGS: 00000206
[ 304.245772] RAX: 000000001d95bc8c RBX: 0000000180100008 RCX:
000000001d95bc8c
[ 304.245775] RDX: 00000000000000ad RSI: 0000000000000002 RDI:
0000000000000001
[ 304.245777] RBP: ffff880218def938 R08: 0000000000000001 R09:
0000000000000000
[ 304.245780] R10: 0000000000000000 R11: 0000000000000000 R12:
ffffffff817fe161
[ 304.245783] R13: ffffffff810d021e R14: ffffffff817fe161 R15:
ffffffff810d021e
[ 304.245786] FS: 00007fde9af5e940(0000) GS:ffff88023ed00000(0000)
knlGS:0000000000000000
[ 304.245789] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 304.245792] CR2: 00007f21c0f55000 CR3: 0000000001e0b000 CR4:
00000000000407e0
[ 304.245794] Stack:
[ 304.245796] ffff880218def948 ffffffff813bf20f ffff880218def978
ffffffff810b428c
[ 304.245802] ffff88008ced0d70 ffff88008ced0d70 ffff880231f1f800
ffff880231f1fd40
[ 304.245807] ffff880218def9a8 ffffffff817fca99 ffffffff8160f70b
ffffffff8160f844
[ 304.245812] Call Trace:
[ 304.245819] [<ffffffff813bf20f>] __delay+0xf/0x20
[ 304.245826] [<ffffffff810b428c>] do_raw_spin_lock+0x8c/0x150
[ 304.245830] [<ffffffff817fca99>] _raw_spin_lock+0x39/0x40
[ 304.245837] [<ffffffff8160f70b>] ?
media_device_unregister_entity+0x3b/0x130
[ 304.245841] [<ffffffff8160f844>] ? media_device_unregister+0x44/0x120
[ 304.245846] [<ffffffff8160f70b>]
media_device_unregister_entity+0x3b/0x130
[ 304.245851] [<ffffffff8160f8ba>] media_device_unregister+0xba/0x120
[ 304.245859] [<ffffffffa05d2072>] au0828_usb_release+0x22/0x50 [au0828]
[ 304.245868] [<ffffffffa05d21fa>] au0828_usb_v4l2_release+0x6a/0x80
[au0828]
[ 304.245874] [<ffffffff816180eb>] v4l2_device_release+0x1b/0x20
[ 304.245878] [<ffffffff816187f5>] v4l2_device_put+0x25/0x30
[ 304.245883] [<ffffffffa05d2164>] au0828_usb_disconnect+0xc4/0xf0
[au0828]
[ 304.245888] [<ffffffff81598bf6>] usb_unbind_interface+0x86/0x270
[ 304.245893] [<ffffffff810add7d>] ? trace_hardirqs_on+0xd/0x10
[ 304.245900] [<ffffffff814db0a1>] __device_release_driver+0xa1/0x150
[ 304.245904] [<ffffffff814db175>] device_release_driver+0x25/0x40
[ 304.245910] [<ffffffff814da7dc>] bus_remove_device+0x11c/0x1a0
[ 304.245914] [<ffffffff814d6df9>] device_del+0x139/0x250
[ 304.245919] [<ffffffff81595de1>] ? remove_intf_ep_devs+0x41/0x60
[ 304.245923] [<ffffffff81596459>] usb_disable_device+0x89/0x270
[ 304.245927] [<ffffffff8158be94>] usb_disconnect+0x94/0x2b0
[ 304.245931] [<ffffffff8158e227>] hub_event+0x767/0x1580
[ 304.245937] [<ffffffff81087762>] ? finish_task_switch+0x52/0x1e0
[ 304.245943] [<ffffffff8107826f>] process_one_work+0x1cf/0x540
[ 304.245947] [<ffffffff81078203>] ? process_one_work+0x163/0x540
[ 304.245952] [<ffffffff81078628>] worker_thread+0x48/0x4a0
[ 304.245957] [<ffffffff810785e0>] ? process_one_work+0x540/0x540
[ 304.245961] [<ffffffff810785e0>] ? process_one_work+0x540/0x540
[ 304.245965] [<ffffffff8107e914>] kthread+0xe4/0x100
[ 304.245971] [<ffffffff8107e830>] ? kthread_create_on_node+0x220/0x220
[ 304.245975] [<ffffffff817fd9cf>] ret_from_fork+0x3f/0x70
[ 304.245980] [<ffffffff8107e830>] ? kthread_create_on_node+0x220/0x220
[ 304.245982] Code: 00 5d c3 0f 1f 40 00 66 2e 0f 1f 84 00 00 00 00 00
0f 1f 44 00 00 55 48 89 e5 65 8b 35 90 ae c4 7e 0f ae f0 0f 31 89 c1 0f
ae f0 <0f> 31 48 c1 e2 20 89 c0 48 09 c2 89 d0 29 ca 39 d7 76 1c f3 90
[ 332.243453] NMI watchdog: BUG: soft lockup - CPU#2 stuck for 22s!
[kworker/2:1:56]
[ 332.243464] Modules linked in: snd_usb_audio snd_usbmidi_lib
snd_seq_midi snd_seq_midi_event snd_seq snd_rawmidi ir_lirc_codec
lirc_dev ir_sony_decoder ir_xmp_decoder ir_sharp_decoder
ir_sanyo_decoder ir_mce_kbd_decoder snd_seq_device ir_jvc_decoder
ir_rc5_decoder ir_rc6_decoder ir_nec_decoder au8522_dig tuner
au8522_decoder au8522_common au0828 tveeprom nf_conntrack_ipv4
nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT nf_reject_ipv4
xt_tcpudp bridge stp llc ebtable_filter ebtables ip6table_filter
ip6_tables iptable_filter ip_tables x_tables binfmt_misc nls_iso8859_1
kvm_amd kvm uvcvideo videobuf2_vmalloc videobuf2_memops
ghash_clmulni_intel videobuf2_core aesni_intel aes_x86_64 ablk_helper
cryptd lrw hp_wmi gf128mul sparse_keymap snd_hda_codec_idt glue_helper
snd_hda_codec_generic snd_hda_codec_hdmi
[ 332.243542] snd_hda_intel microcode snd_hda_codec hp_accel
tpm_infineon snd_hda_core joydev k10temp serio_raw lis3lv02d snd_hwdep
input_polldev snd_pcm tpm_tis snd_timer i2c_piix4 shpchp mac_hid
parport_pc ppdev lp parport autofs4 pl2303 usbserial hid_generic radeon
usbhid psmouse i2c_algo_bit hid firewire_ohci ttm firewire_core
drm_kms_helper sdhci_pci crc_itu_t r8169 sdhci mii drm wmi video
[ 332.243592] irq event stamp: 1850
[ 332.243595] hardirqs last enabled at (1849): [<ffffffff817fce50>]
_raw_spin_unlock_irq+0x30/0x40
[ 332.243605] hardirqs last disabled at (1850): [<ffffffff817fcbe7>]
_raw_spin_lock_irq+0x17/0x50
[ 332.243612] softirqs last enabled at (512): [<ffffffff81799f7d>]
addrconf_verify_rtnl+0x23d/0x500
[ 332.243619] softirqs last disabled at (506): [<ffffffff81799d63>]
addrconf_verify_rtnl+0x23/0x500
[ 332.243628] CPU: 2 PID: 56 Comm: kworker/2:1 Tainted: G L
4.2.0-rc2+ #21
[ 332.243632] Hardware name: Hewlett-Packard HP ProBook 6475b/180F,
BIOS 68TTU Ver. F.04 08/03/2012
[ 332.243638] Workqueue: usb_hub_wq hub_event
[ 332.243642] task: ffff88021e222600 ti: ffff880218dec000 task.ti:
ffff880218dec000
[ 332.243645] RIP: 0010:[<ffffffff813bf2e5>] [<ffffffff813bf2e5>]
delay_tsc+0x15/0x50
[ 332.243653] RSP: 0018:ffff880218def938 EFLAGS: 00000202
[ 332.243656] RAX: 0000000015191edb RBX: 0000000180100008 RCX:
0000000015191d34
[ 332.243659] RDX: 00000000000000bc RSI: 0000000000000002 RDI:
0000000000000001
[ 332.243662] RBP: ffff880218def938 R08: 0000000000000001 R09:
0000000000000000
[ 332.243665] R10: 0000000000000000 R11: 0000000000000000 R12:
ffffffff817fe161
[ 332.243667] R13: ffffffff810d021e R14: ffffffff817fe161 R15:
ffffffff810d021e
[ 332.243671] FS: 00007fde9af5e940(0000) GS:ffff88023ed00000(0000)
knlGS:0000000000000000
[ 332.243674] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 332.243677] CR2: 00007f21c0f55000 CR3: 0000000001e0b000 CR4:
00000000000407e0
[ 332.243679] Stack:
[ 332.243681] ffff880218def948 ffffffff813bf20f ffff880218def978
ffffffff810b428c
[ 332.243687] ffff88008ced0d70 ffff88008ced0d70 ffff880231f1f800
ffff880231f1fd40
[ 332.243692] ffff880218def9a8 ffffffff817fca99 ffffffff8160f70b
ffffffff8160f844
[ 332.243697] Call Trace:
[ 332.243704] [<ffffffff813bf20f>] __delay+0xf/0x20
[ 332.243711] [<ffffffff810b428c>] do_raw_spin_lock+0x8c/0x150
[ 332.243715] [<ffffffff817fca99>] _raw_spin_lock+0x39/0x40
[ 332.243721] [<ffffffff8160f70b>] ?
media_device_unregister_entity+0x3b/0x130
[ 332.243726] [<ffffffff8160f844>] ? media_device_unregister+0x44/0x120
[ 332.243730] [<ffffffff8160f70b>]
media_device_unregister_entity+0x3b/0x130
[ 332.243734] [<ffffffff8160f8ba>] media_device_unregister+0xba/0x120
[ 332.243743] [<ffffffffa05d2072>] au0828_usb_release+0x22/0x50 [au0828]
[ 332.243749] [<ffffffffa05d21fa>] au0828_usb_v4l2_release+0x6a/0x80
[au0828]
[ 332.243754] [<ffffffff816180eb>] v4l2_device_release+0x1b/0x20
[ 332.243758] [<ffffffff816187f5>] v4l2_device_put+0x25/0x30
[ 332.243763] [<ffffffffa05d2164>] au0828_usb_disconnect+0xc4/0xf0
[au0828]
[ 332.243768] [<ffffffff81598bf6>] usb_unbind_interface+0x86/0x270
[ 332.243773] [<ffffffff810add7d>] ? trace_hardirqs_on+0xd/0x10
[ 332.243780] [<ffffffff814db0a1>] __device_release_driver+0xa1/0x150
[ 332.243784] [<ffffffff814db175>] device_release_driver+0x25/0x40
[ 332.243790] [<ffffffff814da7dc>] bus_remove_device+0x11c/0x1a0
[ 332.243794] [<ffffffff814d6df9>] device_del+0x139/0x250
[ 332.243799] [<ffffffff81595de1>] ? remove_intf_ep_devs+0x41/0x60
[ 332.243804] [<ffffffff81596459>] usb_disable_device+0x89/0x270
[ 332.243808] [<ffffffff8158be94>] usb_disconnect+0x94/0x2b0
[ 332.243812] [<ffffffff8158e227>] hub_event+0x767/0x1580
[ 332.243817] [<ffffffff81087762>] ? finish_task_switch+0x52/0x1e0
[ 332.243823] [<ffffffff8107826f>] process_one_work+0x1cf/0x540
[ 332.243827] [<ffffffff81078203>] ? process_one_work+0x163/0x540
[ 332.243832] [<ffffffff81078628>] worker_thread+0x48/0x4a0
[ 332.243837] [<ffffffff810785e0>] ? process_one_work+0x540/0x540
[ 332.243841] [<ffffffff810785e0>] ? process_one_work+0x540/0x540
[ 332.243846] [<ffffffff8107e914>] kthread+0xe4/0x100
[ 332.243851] [<ffffffff8107e830>] ? kthread_create_on_node+0x220/0x220
[ 332.243855] [<ffffffff817fd9cf>] ret_from_fork+0x3f/0x70
[ 332.243860] [<ffffffff8107e830>] ? kthread_create_on_node+0x220/0x220
[ 332.243862] Code: ff 15 68 bb ae 00 5d c3 0f 1f 40 00 66 2e 0f 1f 84
00 00 00 00 00 0f 1f 44 00 00 55 48 89 e5 65 8b 35 90 ae c4 7e 0f ae f0
0f 31 <89> c1 0f ae f0 0f 31 48 c1 e2 20 89 c0 48 09 c2 89 d0 29 ca 39
[ 344.082652] INFO: rcu_sched self-detected stall on CPU { 2} (t=16250
jiffies g=16088 c=16087 q=6192)
[ 344.082671] Task dump for CPU 2:
[ 344.082675] kworker/2:1 R running task 0 56 2
0x00000008
[ 344.082686] Workqueue: usb_hub_wq hub_event
[ 344.082689] 0000000000000002 ffff88023ed03d58 ffffffff8108d999
ffffffff8108d8d1
[ 344.082695] 0000000000000000 0000000000000002 ffffffff81e4ffc0
ffff88023ed03d78
[ 344.082701] ffffffff8109089b ffff88023ed16840 0000000000000003
ffff88023ed03da8
[ 344.082706] Call Trace:
[ 344.082709] <IRQ> [<ffffffff8108d999>] sched_show_task+0x129/0x230
[ 344.082721] [<ffffffff8108d8d1>] ? sched_show_task+0x61/0x230
[ 344.082727] [<ffffffff8109089b>] dump_cpu_task+0x3b/0x50
[ 344.082733] [<ffffffff810cd58e>] rcu_dump_cpu_stacks+0x8e/0xe0
[ 344.082738] [<ffffffff810d0906>] rcu_check_callbacks+0x486/0x770
[ 344.082743] [<ffffffff810a9580>] ? cpuacct_account_field+0xd0/0x1a0
[ 344.082747] [<ffffffff810a94b5>] ? cpuacct_account_field+0x5/0x1a0
[ 344.082753] [<ffffffff810e6212>] ? tick_sched_timer+0x22/0x80
[ 344.082758] [<ffffffff810e61f0>] ? tick_sched_do_timer+0x30/0x30
[ 344.082762] [<ffffffff810d5c89>] update_process_times+0x39/0x60
[ 344.082767] [<ffffffff810e5b25>] tick_sched_handle.isra.16+0x25/0x60
[ 344.082772] [<ffffffff810e6234>] tick_sched_timer+0x44/0x80
[ 344.082776] [<ffffffff810d653e>] __hrtimer_run_queues+0xce/0x270
[ 344.082781] [<ffffffff810d6ceb>] hrtimer_interrupt+0xab/0x1b0
[ 344.082787] [<ffffffff8103807c>] local_apic_timer_interrupt+0x3c/0x70
[ 344.082792] [<ffffffff81800031>] smp_apic_timer_interrupt+0x41/0x60
[ 344.082796] [<ffffffff817fe40d>] apic_timer_interrupt+0x6d/0x80
[ 344.082799] <EOI> [<ffffffff813bf2e3>] ? delay_tsc+0x13/0x50
[ 344.082808] [<ffffffff813bf20f>] __delay+0xf/0x20
[ 344.082812] [<ffffffff810b428c>] do_raw_spin_lock+0x8c/0x150
[ 344.082816] [<ffffffff817fca99>] _raw_spin_lock+0x39/0x40
[ 344.082821] [<ffffffff8160f70b>] ?
media_device_unregister_entity+0x3b/0x130
[ 344.082825] [<ffffffff8160f844>] ? media_device_unregister+0x44/0x120
[ 344.082829] [<ffffffff8160f70b>]
media_device_unregister_entity+0x3b/0x130
[ 344.082833] [<ffffffff8160f8ba>] media_device_unregister+0xba/0x120
[ 344.082841] [<ffffffffa05d2072>] au0828_usb_release+0x22/0x50 [au0828]
[ 344.082846] [<ffffffffa05d21fa>] au0828_usb_v4l2_release+0x6a/0x80
[au0828]
[ 344.082851] [<ffffffff816180eb>] v4l2_device_release+0x1b/0x20
[ 344.082854] [<ffffffff816187f5>] v4l2_device_put+0x25/0x30
[ 344.082860] [<ffffffffa05d2164>] au0828_usb_disconnect+0xc4/0xf0
[au0828]
[ 344.082865] [<ffffffff81598bf6>] usb_unbind_interface+0x86/0x270
[ 344.082869] [<ffffffff810add7d>] ? trace_hardirqs_on+0xd/0x10
[ 344.082875] [<ffffffff814db0a1>] __device_release_driver+0xa1/0x150
[ 344.082880] [<ffffffff814db175>] device_release_driver+0x25/0x40
[ 344.082885] [<ffffffff814da7dc>] bus_remove_device+0x11c/0x1a0
[ 344.082889] [<ffffffff814d6df9>] device_del+0x139/0x250
[ 344.082894] [<ffffffff81595de1>] ? remove_intf_ep_devs+0x41/0x60
[ 344.082898] [<ffffffff81596459>] usb_disable_device+0x89/0x270
[ 344.082902] [<ffffffff8158be94>] usb_disconnect+0x94/0x2b0
[ 344.082906] [<ffffffff8158e227>] hub_event+0x767/0x1580
[ 344.082911] [<ffffffff81087762>] ? finish_task_switch+0x52/0x1e0
[ 344.082917] [<ffffffff8107826f>] process_one_work+0x1cf/0x540
[ 344.082921] [<ffffffff81078203>] ? process_one_work+0x163/0x540
[ 344.082926] [<ffffffff81078628>] worker_thread+0x48/0x4a0
[ 344.082931] [<ffffffff810785e0>] ? process_one_work+0x540/0x540
[ 344.082935] [<ffffffff810785e0>] ? process_one_work+0x540/0x540
[ 344.082939] [<ffffffff8107e914>] kthread+0xe4/0x100
[ 344.082944] [<ffffffff8107e830>] ? kthread_create_on_node+0x220/0x220
[ 344.082949] [<ffffffff817fd9cf>] ret_from_fork+0x3f/0x70
[ 344.082953] [<ffffffff8107e830>] ? kthread_create_on_node+0x220/0x220
[ 368.241164] NMI watchdog: BUG: soft lockup - CPU#2 stuck for 22s!
[kworker/2:1:56]
[ 368.241173] Modules linked in: snd_usb_audio snd_usbmidi_lib
snd_seq_midi snd_seq_midi_event snd_seq snd_rawmidi ir_lirc_codec
lirc_dev ir_sony_decoder ir_xmp_decoder ir_sharp_decoder
ir_sanyo_decoder ir_mce_kbd_decoder snd_seq_device ir_jvc_decoder
ir_rc5_decoder ir_rc6_decoder ir_nec_decoder au8522_dig tuner
au8522_decoder au8522_common au0828 tveeprom nf_conntrack_ipv4
nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT nf_reject_ipv4
xt_tcpudp bridge stp llc ebtable_filter ebtables ip6table_filter
ip6_tables iptable_filter ip_tables x_tables binfmt_misc nls_iso8859_1
kvm_amd kvm uvcvideo videobuf2_vmalloc videobuf2_memops
ghash_clmulni_intel videobuf2_core aesni_intel aes_x86_64 ablk_helper
cryptd lrw hp_wmi gf128mul sparse_keymap snd_hda_codec_idt glue_helper
snd_hda_codec_generic snd_hda_codec_hdmi
[ 368.241251] snd_hda_intel microcode snd_hda_codec hp_accel
tpm_infineon snd_hda_core joydev k10temp serio_raw lis3lv02d snd_hwdep
input_polldev snd_pcm tpm_tis snd_timer i2c_piix4 shpchp mac_hid
parport_pc ppdev lp parport autofs4 pl2303 usbserial hid_generic radeon
usbhid psmouse i2c_algo_bit hid firewire_ohci ttm firewire_core
drm_kms_helper sdhci_pci crc_itu_t r8169 sdhci mii drm wmi video
[ 368.241300] irq event stamp: 1850
[ 368.241303] hardirqs last enabled at (1849): [<ffffffff817fce50>]
_raw_spin_unlock_irq+0x30/0x40
[ 368.241313] hardirqs last disabled at (1850): [<ffffffff817fcbe7>]
_raw_spin_lock_irq+0x17/0x50
[ 368.241318] softirqs last enabled at (512): [<ffffffff81799f7d>]
addrconf_verify_rtnl+0x23d/0x500
[ 368.241326] softirqs last disabled at (506): [<ffffffff81799d63>]
addrconf_verify_rtnl+0x23/0x500
[ 368.241335] CPU: 2 PID: 56 Comm: kworker/2:1 Tainted: G L
4.2.0-rc2+ #21
[ 368.241339] Hardware name: Hewlett-Packard HP ProBook 6475b/180F,
BIOS 68TTU Ver. F.04 08/03/2012
[ 368.241345] Workqueue: usb_hub_wq hub_event
[ 368.241349] task: ffff88021e222600 ti: ffff880218dec000 task.ti:
ffff880218dec000
[ 368.241352] RIP: 0010:[<ffffffff813bf2ea>] [<ffffffff813bf2ea>]
delay_tsc+0x1a/0x50
[ 368.241359] RSP: 0018:ffff880218def938 EFLAGS: 00000206
[ 368.241363] RAX: 000000005363a164 RBX: 0000000180100008 RCX:
000000005363a164
[ 368.241365] RDX: 00000000000000cf RSI: 0000000000000002 RDI:
0000000000000001
[ 368.241368] RBP: ffff880218def938 R08: 0000000000000001 R09:
0000000000000000
[ 368.241370] R10: 0000000000000000 R11: 0000000000000000 R12:
ffffffff817fe161
[ 368.241373] R13: ffffffff810d021e R14: ffff880218def8c8 R15:
0140000000000000
[ 368.241377] FS: 00007fde9af5e940(0000) GS:ffff88023ed00000(0000)
knlGS:0000000000000000
[ 368.241379] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 368.241382] CR2: 00007f21c0f55000 CR3: 0000000001e0b000 CR4:
00000000000407e0
[ 368.241384] Stack:
[ 368.241387] ffff880218def948 ffffffff813bf20f ffff880218def978
ffffffff810b428c
[ 368.241392] ffff88008ced0d70 ffff88008ced0d70 ffff880231f1f800
ffff880231f1fd40
[ 368.241398] ffff880218def9a8 ffffffff817fca99 ffffffff8160f70b
ffffffff8160f844
[ 368.241403] Call Trace:
[ 368.241410] [<ffffffff813bf20f>] __delay+0xf/0x20
[ 368.241416] [<ffffffff810b428c>] do_raw_spin_lock+0x8c/0x150
[ 368.241421] [<ffffffff817fca99>] _raw_spin_lock+0x39/0x40
[ 368.241427] [<ffffffff8160f70b>] ?
media_device_unregister_entity+0x3b/0x130
[ 368.241431] [<ffffffff8160f844>] ? media_device_unregister+0x44/0x120
[ 368.241436] [<ffffffff8160f70b>]
media_device_unregister_entity+0x3b/0x130
[ 368.241440] [<ffffffff8160f8ba>] media_device_unregister+0xba/0x120
[ 368.241449] [<ffffffffa05d2072>] au0828_usb_release+0x22/0x50 [au0828]
[ 368.241454] [<ffffffffa05d21fa>] au0828_usb_v4l2_release+0x6a/0x80
[au0828]
[ 368.241460] [<ffffffff816180eb>] v4l2_device_release+0x1b/0x20
[ 368.241464] [<ffffffff816187f5>] v4l2_device_put+0x25/0x30
[ 368.241469] [<ffffffffa05d2164>] au0828_usb_disconnect+0xc4/0xf0
[au0828]
[ 368.241474] [<ffffffff81598bf6>] usb_unbind_interface+0x86/0x270
[ 368.241479] [<ffffffff810add7d>] ? trace_hardirqs_on+0xd/0x10
[ 368.241486] [<ffffffff814db0a1>] __device_release_driver+0xa1/0x150
[ 368.241491] [<ffffffff814db175>] device_release_driver+0x25/0x40
[ 368.241496] [<ffffffff814da7dc>] bus_remove_device+0x11c/0x1a0
[ 368.241501] [<ffffffff814d6df9>] device_del+0x139/0x250
[ 368.241505] [<ffffffff81595de1>] ? remove_intf_ep_devs+0x41/0x60
[ 368.241510] [<ffffffff81596459>] usb_disable_device+0x89/0x270
[ 368.241514] [<ffffffff8158be94>] usb_disconnect+0x94/0x2b0
[ 368.241518] [<ffffffff8158e227>] hub_event+0x767/0x1580
[ 368.241523] [<ffffffff81087762>] ? finish_task_switch+0x52/0x1e0
[ 368.241529] [<ffffffff8107826f>] process_one_work+0x1cf/0x540
[ 368.241534] [<ffffffff81078203>] ? process_one_work+0x163/0x540
[ 368.241539] [<ffffffff81078628>] worker_thread+0x48/0x4a0
[ 368.241544] [<ffffffff810785e0>] ? process_one_work+0x540/0x540
[ 368.241548] [<ffffffff810785e0>] ? process_one_work+0x540/0x540
[ 368.241552] [<ffffffff8107e914>] kthread+0xe4/0x100
[ 368.241558] [<ffffffff8107e830>] ? kthread_create_on_node+0x220/0x220
[ 368.241562] [<ffffffff817fd9cf>] ret_from_fork+0x3f/0x70
[ 368.241567] [<ffffffff8107e830>] ? kthread_create_on_node+0x220/0x220
[ 368.241569] Code: 00 5d c3 0f 1f 40 00 66 2e 0f 1f 84 00 00 00 00 00
0f 1f 44 00 00 55 48 89 e5 65 8b 35 90 ae c4 7e 0f ae f0 0f 31 89 c1 0f
ae f0 <0f> 31 48 c1 e2 20 89 c0 48 09 c2 89 d0 29 ca 39 d7 76 1c f3 90
[ 396.239591] NMI watchdog: BUG: soft lockup - CPU#2 stuck for 23s!
[kworker/2:1:56]
[ 396.239601] Modules linked in: snd_usb_audio snd_usbmidi_lib
snd_seq_midi snd_seq_midi_event snd_seq snd_rawmidi ir_lirc_codec
lirc_dev ir_sony_decoder ir_xmp_decoder ir_sharp_decoder
ir_sanyo_decoder ir_mce_kbd_decoder snd_seq_device ir_jvc_decoder
ir_rc5_decoder ir_rc6_decoder ir_nec_decoder au8522_dig tuner
au8522_decoder au8522_common au0828 tveeprom nf_conntrack_ipv4
nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT nf_reject_ipv4
xt_tcpudp bridge stp llc ebtable_filter ebtables ip6table_filter
ip6_tables iptable_filter ip_tables x_tables binfmt_misc nls_iso8859_1
kvm_amd kvm uvcvideo videobuf2_vmalloc videobuf2_memops
ghash_clmulni_intel videobuf2_core aesni_intel aes_x86_64 ablk_helper
cryptd lrw hp_wmi gf128mul sparse_keymap snd_hda_codec_idt glue_helper
snd_hda_codec_generic snd_hda_codec_hdmi
[ 396.239676] snd_hda_intel microcode snd_hda_codec hp_accel
tpm_infineon snd_hda_core joydev k10temp serio_raw lis3lv02d snd_hwdep
input_polldev snd_pcm tpm_tis snd_timer i2c_piix4 shpchp mac_hid
parport_pc ppdev lp parport autofs4 pl2303 usbserial hid_generic radeon
usbhid psmouse i2c_algo_bit hid firewire_ohci ttm firewire_core
drm_kms_helper sdhci_pci crc_itu_t r8169 sdhci mii drm wmi video
[ 396.239724] irq event stamp: 1850
[ 396.239727] hardirqs last enabled at (1849): [<ffffffff817fce50>]
_raw_spin_unlock_irq+0x30/0x40
[ 396.239736] hardirqs last disabled at (1850): [<ffffffff817fcbe7>]
_raw_spin_lock_irq+0x17/0x50
[ 396.239742] softirqs last enabled at (512): [<ffffffff81799f7d>]
addrconf_verify_rtnl+0x23d/0x500
[ 396.239749] softirqs last disabled at (506): [<ffffffff81799d63>]
addrconf_verify_rtnl+0x23/0x500
[ 396.239758] CPU: 2 PID: 56 Comm: kworker/2:1 Tainted: G L
4.2.0-rc2+ #21
[ 396.239761] Hardware name: Hewlett-Packard HP ProBook 6475b/180F,
BIOS 68TTU Ver. F.04 08/03/2012
[ 396.239768] Workqueue: usb_hub_wq hub_event
[ 396.239772] task: ffff88021e222600 ti: ffff880218dec000 task.ti:
ffff880218dec000
[ 396.239775] RIP: 0010:[<ffffffff813bf2e5>] [<ffffffff813bf2e5>]
delay_tsc+0x15/0x50
[ 396.239782] RSP: 0018:ffff880218def938 EFLAGS: 00000206
[ 396.239785] RAX: 000000004afa4fa4 RBX: 0000000180100008 RCX:
000000004afa42a6
[ 396.239788] RDX: 00000000000000de RSI: 0000000000000002 RDI:
0000000000000001
[ 396.239791] RBP: ffff880218def938 R08: 0000000000000001 R09:
0000000000000000
[ 396.239793] R10: 0000000000000000 R11: 0000000000000000 R12:
ffffffff817fe161
[ 396.239796] R13: ffffffff810d021e R14: ffffffff817fe161 R15:
ffffffff810d021e
[ 396.239799] FS: 00007fde9af5e940(0000) GS:ffff88023ed00000(0000)
knlGS:0000000000000000
[ 396.239802] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 396.239805] CR2: 00007f21c0f55000 CR3: 0000000001e0b000 CR4:
00000000000407e0
[ 396.239807] Stack:
[ 396.239809] ffff880218def948 ffffffff813bf20f ffff880218def978
ffffffff810b428c
[ 396.239815] ffff88008ced0d70 ffff88008ced0d70 ffff880231f1f800
ffff880231f1fd40
[ 396.239820] ffff880218def9a8 ffffffff817fca99 ffffffff8160f70b
ffffffff8160f844
[ 396.239825] Call Trace:
[ 396.239833] [<ffffffff813bf20f>] __delay+0xf/0x20
[ 396.239839] [<ffffffff810b428c>] do_raw_spin_lock+0x8c/0x150
[ 396.239844] [<ffffffff817fca99>] _raw_spin_lock+0x39/0x40
[ 396.239850] [<ffffffff8160f70b>] ?
media_device_unregister_entity+0x3b/0x130
[ 396.239855] [<ffffffff8160f844>] ? media_device_unregister+0x44/0x120
[ 396.239859] [<ffffffff8160f70b>]
media_device_unregister_entity+0x3b/0x130
[ 396.239864] [<ffffffff8160f8ba>] media_device_unregister+0xba/0x120
[ 396.239872] [<ffffffffa05d2072>] au0828_usb_release+0x22/0x50 [au0828]
[ 396.239878] [<ffffffffa05d21fa>] au0828_usb_v4l2_release+0x6a/0x80
[au0828]
[ 396.239883] [<ffffffff816180eb>] v4l2_device_release+0x1b/0x20
[ 396.239887] [<ffffffff816187f5>] v4l2_device_put+0x25/0x30
[ 396.239892] [<ffffffffa05d2164>] au0828_usb_disconnect+0xc4/0xf0
[au0828]
[ 396.239898] [<ffffffff81598bf6>] usb_unbind_interface+0x86/0x270
[ 396.239902] [<ffffffff810add7d>] ? trace_hardirqs_on+0xd/0x10
[ 396.239909] [<ffffffff814db0a1>] __device_release_driver+0xa1/0x150
[ 396.239914] [<ffffffff814db175>] device_release_driver+0x25/0x40
[ 396.239919] [<ffffffff814da7dc>] bus_remove_device+0x11c/0x1a0
[ 396.239924] [<ffffffff814d6df9>] device_del+0x139/0x250
[ 396.239929] [<ffffffff81595de1>] ? remove_intf_ep_devs+0x41/0x60
[ 396.239933] [<ffffffff81596459>] usb_disable_device+0x89/0x270
[ 396.239937] [<ffffffff8158be94>] usb_disconnect+0x94/0x2b0
[ 396.239941] [<ffffffff8158e227>] hub_event+0x767/0x1580
[ 396.239946] [<ffffffff81087762>] ? finish_task_switch+0x52/0x1e0
[ 396.239953] [<ffffffff8107826f>] process_one_work+0x1cf/0x540
[ 396.239957] [<ffffffff81078203>] ? process_one_work+0x163/0x540
[ 396.239962] [<ffffffff81078628>] worker_thread+0x48/0x4a0
[ 396.239967] [<ffffffff810785e0>] ? process_one_work+0x540/0x540
[ 396.239971] [<ffffffff810785e0>] ? process_one_work+0x540/0x540
[ 396.239976] [<ffffffff8107e914>] kthread+0xe4/0x100
[ 396.239981] [<ffffffff8107e830>] ? kthread_create_on_node+0x220/0x220
[ 396.239986] [<ffffffff817fd9cf>] ret_from_fork+0x3f/0x70
[ 396.239990] [<ffffffff8107e830>] ? kthread_create_on_node+0x220/0x220
[ 396.239992] Code: ff 15 68 bb ae 00 5d c3 0f 1f 40 00 66 2e 0f 1f 84
00 00 00 00 00 0f 1f 44 00 00 55 48 89 e5 65 8b 35 90 ae c4 7e 0f ae f0
0f 31 <89> c1 0f ae f0 0f 31 48 c1 e2 20 89 c0 48 09 c2 89 d0 29 ca 39
[ 424.238131] NMI watchdog: BUG: soft lockup - CPU#2 stuck for 23s!
[kworker/2:1:56]
[ 424.238143] Modules linked in: snd_usb_audio snd_usbmidi_lib
snd_seq_midi snd_seq_midi_event snd_seq snd_rawmidi ir_lirc_codec
lirc_dev ir_sony_decoder ir_xmp_decoder ir_sharp_decoder
ir_sanyo_decoder ir_mce_kbd_decoder snd_seq_device ir_jvc_decoder
ir_rc5_decoder ir_rc6_decoder ir_nec_decoder au8522_dig tuner
au8522_decoder au8522_common au0828 tveeprom nf_conntrack_ipv4
nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT nf_reject_ipv4
xt_tcpudp bridge stp llc ebtable_filter ebtables ip6table_filter
ip6_tables iptable_filter ip_tables x_tables binfmt_misc nls_iso8859_1
kvm_amd kvm uvcvideo videobuf2_vmalloc videobuf2_memops
ghash_clmulni_intel videobuf2_core aesni_intel aes_x86_64 ablk_helper
cryptd lrw hp_wmi gf128mul sparse_keymap snd_hda_codec_idt glue_helper
snd_hda_codec_generic snd_hda_codec_hdmi
[ 424.238218] snd_hda_intel microcode snd_hda_codec hp_accel
tpm_infineon snd_hda_core joydev k10temp serio_raw lis3lv02d snd_hwdep
input_polldev snd_pcm tpm_tis snd_timer i2c_piix4 shpchp mac_hid
parport_pc ppdev lp parport autofs4 pl2303 usbserial hid_generic radeon
usbhid psmouse i2c_algo_bit hid firewire_ohci ttm firewire_core
drm_kms_helper sdhci_pci crc_itu_t r8169 sdhci mii drm wmi video
[ 424.238267] irq event stamp: 1850
[ 424.238270] hardirqs last enabled at (1849): [<ffffffff817fce50>]
_raw_spin_unlock_irq+0x30/0x40
[ 424.238280] hardirqs last disabled at (1850): [<ffffffff817fcbe7>]
_raw_spin_lock_irq+0x17/0x50
[ 424.238286] softirqs last enabled at (512): [<ffffffff81799f7d>]
addrconf_verify_rtnl+0x23d/0x500
[ 424.238293] softirqs last disabled at (506): [<ffffffff81799d63>]
addrconf_verify_rtnl+0x23/0x500
[ 424.238302] CPU: 2 PID: 56 Comm: kworker/2:1 Tainted: G L
4.2.0-rc2+ #21
[ 424.238306] Hardware name: Hewlett-Packard HP ProBook 6475b/180F,
BIOS 68TTU Ver. F.04 08/03/2012
[ 424.238312] Workqueue: usb_hub_wq hub_event
[ 424.238316] task: ffff88021e222600 ti: ffff880218dec000 task.ti:
ffff880218dec000
[ 424.238319] RIP: 0010:[<ffffffff813bf2ec>] [<ffffffff813bf2ec>]
delay_tsc+0x1c/0x50
[ 424.238327] RSP: 0018:ffff880218def938 EFLAGS: 00000202
[ 424.238330] RAX: 000000004294e518 RBX: 0000000180100008 RCX:
000000004294d8ed
[ 424.238333] RDX: 00000000000000ed RSI: 0000000000000002 RDI:
0000000000000001
[ 424.238335] RBP: ffff880218def938 R08: 0000000000000001 R09:
0000000000000000
[ 424.238338] R10: 0000000000000000 R11: 0000000000000000 R12:
ffffffff817fe161
[ 424.238340] R13: ffffffff810d021e R14: ffffffff817fe161 R15:
ffffffff810d021e
[ 424.238344] FS: 00007fde9af5e940(0000) GS:ffff88023ed00000(0000)
knlGS:0000000000000000
[ 424.238347] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 424.238350] CR2: 00007f21c0f55000 CR3: 0000000001e0b000 CR4:
00000000000407e0
[ 424.238352] Stack:
[ 424.238354] ffff880218def948 ffffffff813bf20f ffff880218def978
ffffffff810b428c
[ 424.238360] ffff88008ced0d70 ffff88008ced0d70 ffff880231f1f800
ffff880231f1fd40
[ 424.238365] ffff880218def9a8 ffffffff817fca99 ffffffff8160f70b
ffffffff8160f844
[ 424.238370] Call Trace:
[ 424.238377] [<ffffffff813bf20f>] __delay+0xf/0x20
[ 424.238384] [<ffffffff810b428c>] do_raw_spin_lock+0x8c/0x150
[ 424.238388] [<ffffffff817fca99>] _raw_spin_lock+0x39/0x40
[ 424.238394] [<ffffffff8160f70b>] ?
media_device_unregister_entity+0x3b/0x130
[ 424.238399] [<ffffffff8160f844>] ? media_device_unregister+0x44/0x120
[ 424.238403] [<ffffffff8160f70b>]
media_device_unregister_entity+0x3b/0x130
[ 424.238407] [<ffffffff8160f8ba>] media_device_unregister+0xba/0x120
[ 424.238416] [<ffffffffa05d2072>] au0828_usb_release+0x22/0x50 [au0828]
[ 424.238421] [<ffffffffa05d21fa>] au0828_usb_v4l2_release+0x6a/0x80
[au0828]
[ 424.238427] [<ffffffff816180eb>] v4l2_device_release+0x1b/0x20
[ 424.238431] [<ffffffff816187f5>] v4l2_device_put+0x25/0x30
[ 424.238436] [<ffffffffa05d2164>] au0828_usb_disconnect+0xc4/0xf0
[au0828]
[ 424.238441] [<ffffffff81598bf6>] usb_unbind_interface+0x86/0x270
[ 424.238446] [<ffffffff810add7d>] ? trace_hardirqs_on+0xd/0x10
[ 424.238453] [<ffffffff814db0a1>] __device_release_driver+0xa1/0x150
[ 424.238457] [<ffffffff814db175>] device_release_driver+0x25/0x40
[ 424.238463] [<ffffffff814da7dc>] bus_remove_device+0x11c/0x1a0
[ 424.238467] [<ffffffff814d6df9>] device_del+0x139/0x250
[ 424.238472] [<ffffffff81595de1>] ? remove_intf_ep_devs+0x41/0x60
[ 424.238476] [<ffffffff81596459>] usb_disable_device+0x89/0x270
[ 424.238480] [<ffffffff8158be94>] usb_disconnect+0x94/0x2b0
[ 424.238484] [<ffffffff8158e227>] hub_event+0x767/0x1580
[ 424.238490] [<ffffffff81087762>] ? finish_task_switch+0x52/0x1e0
[ 424.238496] [<ffffffff8107826f>] process_one_work+0x1cf/0x540
[ 424.238500] [<ffffffff81078203>] ? process_one_work+0x163/0x540
[ 424.238505] [<ffffffff81078628>] worker_thread+0x48/0x4a0
[ 424.238510] [<ffffffff810785e0>] ? process_one_work+0x540/0x540
[ 424.238514] [<ffffffff810785e0>] ? process_one_work+0x540/0x540
[ 424.238518] [<ffffffff8107e914>] kthread+0xe4/0x100
[ 424.238524] [<ffffffff8107e830>] ? kthread_create_on_node+0x220/0x220
[ 424.238528] [<ffffffff817fd9cf>] ret_from_fork+0x3f/0x70
[ 424.238533] [<ffffffff8107e830>] ? kthread_create_on_node+0x220/0x220
[ 424.238535] Code: c3 0f 1f 40 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f
44 00 00 55 48 89 e5 65 8b 35 90 ae c4 7e 0f ae f0 0f 31 89 c1 0f ae f0
0f 31 <48> c1 e2 20 89 c0 48 09 c2 89 d0 29 ca 39 d7 76 1c f3 90 65 8b
--
Shuah Khan
Sr. Linux Kernel Developer
Open Source Innovation Group
Samsung Research America (Silicon Valley)
shuahkh@xxxxxxxxxxxxxxx | (970) 217-8978
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