Mar  4 08:26:45 localhost kernel: [   22.480746] input: cx88 IR (Hauppauge Nova-S-Plus  as /devices/pci0000:00/0000:00:1e.0/0000:05:00.1/rc/rc0/input13
Mar  4 08:26:45 localhost kernel: [   22.482299] rc0: cx88 IR (Hauppauge Nova-S-Plus  as /devices/pci0000:00/0000:00:1e.0/0000:05:00.1/rc/rc0
Mar  4 08:26:45 localhost kernel: [   22.487409] cx88[0]/1: CX88x/0: ALSA support for cx2388x boards
Mar  4 08:26:45 localhost kernel: [   22.491860] cx88[0]/0: found at 0000:05:00.0, rev: 5, irq: 20, latency: 32, mmio: 0xe8000000
Mar  4 08:26:45 localhost kernel: [   22.493050] 
Mar  4 08:26:45 localhost kernel: [   22.493054] =============================================
Mar  4 08:26:45 localhost kernel: [   22.493055] [ INFO: possible recursive locking detected ]
Mar  4 08:26:45 localhost kernel: [   22.493057] 3.8.1-201.fc18.x86_64.debug #1 Not tainted
Mar  4 08:26:45 localhost kernel: [   22.493059] ---------------------------------------------
Mar  4 08:26:45 localhost kernel: [   22.493060] systemd-udevd/385 is trying to acquire lock:
Mar  4 08:26:45 localhost kernel: [   22.493063]  (hdl->lock){+.+...}, at: [<ffffffffa0433a7e>] find_ref_lock+0x2e/0x60 [videodev]
Mar  4 08:26:45 localhost kernel: [   22.493079] 
Mar  4 08:26:45 localhost kernel: [   22.493079] but task is already holding lock:
Mar  4 08:26:45 localhost kernel: [   22.493081]  (hdl->lock){+.+...}, at: [<ffffffffa0436c88>] v4l2_ctrl_add_handler+0x88/0xf0 [videodev]
Mar  4 08:26:45 localhost kernel: [   22.493088] 
Mar  4 08:26:45 localhost kernel: [   22.493088] other info that might help us debug this:
Mar  4 08:26:45 localhost kernel: [   22.493090]  Possible unsafe locking scenario:
Mar  4 08:26:45 localhost kernel: [   22.493090] 
Mar  4 08:26:45 localhost kernel: [   22.493092]        CPU0
Mar  4 08:26:45 localhost kernel: [   22.493093]        ----
Mar  4 08:26:45 localhost kernel: [   22.493094]   lock(hdl->lock);
Mar  4 08:26:45 localhost kernel: [   22.493097]   lock(hdl->lock);
Mar  4 08:26:45 localhost kernel: [   22.493099] 
Mar  4 08:26:45 localhost kernel: [   22.493099]  *** DEADLOCK ***
Mar  4 08:26:45 localhost kernel: [   22.493099] 
Mar  4 08:26:45 localhost kernel: [   22.493101]  May be due to missing lock nesting notation
Mar  4 08:26:45 localhost kernel: [   22.493101] 
Mar  4 08:26:45 localhost kernel: [   22.493103] 3 locks held by systemd-udevd/385:
Mar  4 08:26:45 localhost kernel: [   22.493105]  #0:  (&__lockdep_no_validate__){......}, at: [<ffffffff8147119b>] __driver_attach+0x5b/0xb0
Mar  4 08:26:45 localhost kernel: [   22.493117]  #1:  (&__lockdep_no_validate__){......}, at: [<ffffffff814711a9>] __driver_attach+0x69/0xb0
Mar  4 08:26:45 localhost kernel: [   22.493123]  #2:  (hdl->lock){+.+...}, at: [<ffffffffa0436c88>] v4l2_ctrl_add_handler+0x88/0xf0 [videodev]
Mar  4 08:26:45 localhost kernel: [   22.493131] 
Mar  4 08:26:45 localhost kernel: [   22.493131] stack backtrace:
Mar  4 08:26:45 localhost kernel: [   22.493133] Pid: 385, comm: systemd-udevd Not tainted 3.8.1-201.fc18.x86_64.debug #1
Mar  4 08:26:45 localhost kernel: [   22.493135] Call Trace:
Mar  4 08:26:45 localhost kernel: [   22.493140]  [<ffffffff810d9de5>] __lock_acquire+0x6f5/0x1ba0
Mar  4 08:26:45 localhost kernel: [   22.493144]  [<ffffffff810ae538>] ? sched_clock_cpu+0xa8/0x120
Mar  4 08:26:45 localhost kernel: [   22.493148]  [<ffffffff81021dd3>] ? native_sched_clock+0x13/0x80
Mar  4 08:26:45 localhost kernel: [   22.493151]  [<ffffffff81021e49>] ? sched_clock+0x9/0x10
Mar  4 08:26:45 localhost kernel: [   22.493154]  [<ffffffff810db961>] lock_acquire+0xa1/0x1f0
Mar  4 08:26:45 localhost kernel: [   22.493160]  [<ffffffffa0433a7e>] ? find_ref_lock+0x2e/0x60 [videodev]
Mar  4 08:26:45 localhost kernel: [   22.493170]  [<ffffffff817170f6>] mutex_lock_nested+0x76/0x390
Mar  4 08:26:45 localhost kernel: [   22.493175]  [<ffffffffa0433a7e>] ? find_ref_lock+0x2e/0x60 [videodev]
Mar  4 08:26:45 localhost kernel: [   22.493180]  [<ffffffffa0436c88>] ? v4l2_ctrl_add_handler+0x88/0xf0 [videodev]
Mar  4 08:26:45 localhost kernel: [   22.493183]  [<ffffffff81717366>] ? mutex_lock_nested+0x2e6/0x390
Mar  4 08:26:45 localhost kernel: [   22.493189]  [<ffffffffa0433a7e>] ? find_ref_lock+0x2e/0x60 [videodev]
Mar  4 08:26:45 localhost kernel: [   22.493192]  [<ffffffff810dc4ed>] ? trace_hardirqs_on_caller+0x10d/0x1a0
Mar  4 08:26:45 localhost kernel: [   22.493197]  [<ffffffffa0433a7e>] find_ref_lock+0x2e/0x60 [videodev]
Mar  4 08:26:45 localhost kernel: [   22.493202]  [<ffffffffa0436141>] handler_new_ref+0x51/0x200 [videodev]
Mar  4 08:26:45 localhost kernel: [   22.493207]  [<ffffffffa0436cc7>] v4l2_ctrl_add_handler+0xc7/0xf0 [videodev]
Mar  4 08:26:45 localhost kernel: [   22.493212]  [<ffffffffa051d619>] cx8800_initdev+0x3d9/0x8c0 [cx8800]
Mar  4 08:26:45 localhost kernel: [   22.493215]  [<ffffffff8171b0ff>] ? _raw_spin_unlock_irqrestore+0x3f/0x80
Mar  4 08:26:45 localhost kernel: [   22.493218]  [<ffffffff810dc4ed>] ? trace_hardirqs_on_caller+0x10d/0x1a0
Mar  4 08:26:45 localhost kernel: [   22.493221]  [<ffffffff810dc58d>] ? trace_hardirqs_on+0xd/0x10
Mar  4 08:26:45 localhost kernel: [   22.493226]  [<ffffffff813907ab>] local_pci_probe+0x4b/0x80
Mar  4 08:26:45 localhost kernel: [   22.493229]  [<ffffffff81390a01>] pci_device_probe+0x111/0x120
Mar  4 08:26:45 localhost kernel: [   22.493232]  [<ffffffff81470e3b>] driver_probe_device+0x8b/0x390
Mar  4 08:26:45 localhost kernel: [   22.493235]  [<ffffffff814711eb>] __driver_attach+0xab/0xb0
Mar  4 08:26:45 localhost kernel: [   22.493238]  [<ffffffff81471140>] ? driver_probe_device+0x390/0x390
Mar  4 08:26:45 localhost kernel: [   22.493240]  [<ffffffff8146edad>] bus_for_each_dev+0x5d/0xa0
Mar  4 08:26:45 localhost kernel: [   22.493243]  [<ffffffff8147078e>] driver_attach+0x1e/0x20
Mar  4 08:26:45 localhost kernel: [   22.493246]  [<ffffffff814703b0>] bus_add_driver+0x1b0/0x2a0
Mar  4 08:26:45 localhost kernel: [   22.493251]  [<ffffffffa0526000>] ? 0xffffffffa0525fff
Mar  4 08:26:45 localhost kernel: [   22.493254]  [<ffffffff814718e7>] driver_register+0x77/0x170
Mar  4 08:26:45 localhost kernel: [   22.493257]  [<ffffffffa0526000>] ? 0xffffffffa0525fff
Mar  4 08:26:45 localhost kernel: [   22.493260]  [<ffffffff8138f7c4>] __pci_register_driver+0x64/0x70
Mar  4 08:26:45 localhost kernel: [   22.493264]  [<ffffffffa0526033>] cx8800_init+0x33/0x1000 [cx8800]
Mar  4 08:26:45 localhost kernel: [   22.493267]  [<ffffffff8100215a>] do_one_initcall+0x12a/0x180
Mar  4 08:26:45 localhost kernel: [   22.493271]  [<ffffffff810eaf29>] load_module+0x1bf9/0x23b0
Mar  4 08:26:45 localhost kernel: [   22.493274]  [<ffffffff8137df90>] ? ddebug_proc_open+0xd0/0xd0
Mar  4 08:26:45 localhost kernel: [   22.493278]  [<ffffffff810eb7b7>] sys_init_module+0xd7/0x120
Mar  4 08:26:45 localhost kernel: [   22.493281]  [<ffffffff81724799>] system_call_fastpath+0x16/0x1b
Mar  4 08:26:45 localhost kernel: [   22.559656] BUG: unable to handle kernel NULL pointer dereference at 00000000000000b8
Mar  4 08:26:45 localhost kernel: [   22.559698] IP: [<ffffffffa0558229>] snd_cx88_volume_put+0x139/0x260 [cx88_alsa]
Mar  4 08:26:45 localhost kernel: [   22.559731] PGD 3fcd33067 PUD 3fce63067 PMD 0 
Mar  4 08:26:45 localhost kernel: [   22.559762] Oops: 0000 [#1] SMP 
Mar  4 08:26:45 localhost kernel: [   22.559781] Modules linked in: rc_hauppauge dvb_usb_dib0700(+) snd_hda_codec_realtek cx8802(+) cx8800(+) cx88_alsa cx88xx dib8000 snd_hda_intel(+) dib7000m snd_hda_codec btcx_risc dib0090 tveeprom videobuf_dma_sg snd_hwdep videobuf_core snd_seq dib0070 dib7000p dib3000mc dibx000_common dvb_usb dvb_core v4l2_common snd_seq_device rc_core videodev snd_pcm coretemp iTCO_wdt snd_page_alloc media iTCO_vendor_support r8169 microcode snd_timer lpc_ich snd serio_raw i2c_i801 mfd_core soundcore mii vhost_net tun macvtap macvlan kvm_intel kvm uinput btrfs zlib_deflate libcrc32c ata_generic pata_acpi firewire_ohci firewire_core crc_itu_t pata_it8213 radeon i2c_algo_bit drm_kms_helper ttm drm i2c_core
Mar  4 08:26:45 localhost kernel: [   22.560007] CPU 3 
Mar  4 08:26:45 localhost kernel: [   22.560007] Pid: 483, comm: alsactl Not tainted 3.8.1-201.fc18.x86_64.debug #1 Gigabyte Technology Co., Ltd. EP45-DS4/EP45-DS4
Mar  4 08:26:45 localhost kernel: [   22.560007] RIP: 0010:[<ffffffffa0558229>]  [<ffffffffa0558229>] snd_cx88_volume_put+0x139/0x260 [cx88_alsa]
Mar  4 08:26:45 localhost kernel: [   22.560007] RSP: 0018:ffff8803fa5e3d68  EFLAGS: 00010246
Mar  4 08:26:45 localhost kernel: [   22.560007] RAX: 0000000000000000 RBX: ffff8803fc028000 RCX: 000000000000003f
Mar  4 08:26:45 localhost kernel: [   22.560007] RDX: 0000000000000000 RSI: 0000000000980905 RDI: ffff8803fa4f5248
Mar  4 08:26:45 localhost kernel: [   22.560007] RBP: ffff8803fa5e3da8 R08: 0000000000000000 R09: 0000000000000001
Mar  4 08:26:45 localhost kernel: [   22.560007] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8803fc012e68
Mar  4 08:26:45 localhost kernel: [   22.560007] R13: ffff8803fc017400 R14: 0000000000008000 R15: 000000000000fc00
Mar  4 08:26:45 localhost kernel: [   22.560007] FS:  00007f5999d09740(0000) GS:ffff88041f400000(0000) knlGS:0000000000000000
Mar  4 08:26:45 localhost kernel: [   22.560007] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Mar  4 08:26:45 localhost kernel: [   22.560007] CR2: 00000000000000b8 CR3: 00000003fd76b000 CR4: 00000000000007e0
Mar  4 08:26:45 localhost kernel: [   22.560007] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Mar  4 08:26:45 localhost kernel: [   22.560007] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Mar  4 08:26:45 localhost kernel: [   22.560007] Process alsactl (pid: 483, threadinfo ffff8803fa5e2000, task ffff8803fa5bc940)
Mar  4 08:26:45 localhost kernel: [   22.560007] Stack:
Mar  4 08:26:45 localhost kernel: [   22.560007]  ffff8803fa5e3da8 ffffffffa0367e55 ffff8803fa5e3da8 ffff8803fc012e68
Mar  4 08:26:45 localhost kernel: [   22.560007]  ffff8803fc016f60 ffff8803fa58db60 ffff8803fc0170f8 ffff8803fc0172f0
Mar  4 08:26:45 localhost kernel: [   22.560007]  ffff8803fa5e3de8 ffffffffa036930d ffff8803fa5e3de8 ffff8803fc012e68
Mar  4 08:26:45 localhost kernel: [   22.560007] Call Trace:
Mar  4 08:26:45 localhost kernel: [   22.560007]  [<ffffffffa0367e55>] ? snd_ctl_find_id+0xc5/0xf0 [snd]
Mar  4 08:26:45 localhost kernel: [   22.560007]  [<ffffffffa036930d>] snd_ctl_elem_write+0x10d/0x150 [snd]
Mar  4 08:26:45 localhost kernel: [   22.560007]  [<ffffffffa036a7b0>] snd_ctl_ioctl+0x250/0x850 [snd]
Mar  4 08:26:45 localhost kernel: [   22.560007]  [<ffffffff811ee619>] do_vfs_ioctl+0x99/0x5a0
Mar  4 08:26:45 localhost kernel: [   22.560007]  [<ffffffff812f6867>] ? file_has_perm+0x97/0xb0
Mar  4 08:26:45 localhost kernel: [   22.560007]  [<ffffffff811eebb1>] sys_ioctl+0x91/0xb0
Mar  4 08:26:45 localhost kernel: [   22.560007]  [<ffffffff813696be>] ? trace_hardirqs_on_thunk+0x3a/0x3f
Mar  4 08:26:45 localhost kernel: [   22.560007]  [<ffffffff81724799>] system_call_fastpath+0x16/0x1b
Mar  4 08:26:45 localhost kernel: [   22.560007] Code: 24 50 39 ce 0f 8c f0 00 00 00 41 89 f7 41 be 00 80 00 00 41 c1 e7 0a 85 f6 0f 85 13 01 00 00 48 8b 83 08 0f 00 00 be 05 09 98 00 <48> 8b b8 b8 00 00 00 e8 7b b8 ed ff 48 85 c0 74 48 44 8b 93 c4 
Mar  4 08:26:45 localhost kernel: [   22.560007] RIP  [<ffffffffa0558229>] snd_cx88_volume_put+0x139/0x260 [cx88_alsa]
Mar  4 08:26:45 localhost kernel: [   22.560007]  RSP <ffff8803fa5e3d68>
Mar  4 08:26:45 localhost kernel: [   22.560007] CR2: 00000000000000b8
Mar  4 08:26:45 localhost kernel: [   22.570467] ---[ end trace a5dbb61ff3566117 ]---