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Date: Mon, 16 Mar 2015 16:21:01 +0100
From: Alistair Grant <akgrant0710@...il.com>
To: Mathias Nyman <mathias.nyman@...el.com>
Cc: Mathias Nyman <mathias.nyman@...ux.intel.com>,
Lu Baolu <baolu.lu@...ux.intel.com>,
Devin Heitmueller <dheitmueller@...nellabs.com>,
linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/1] usb: xhci: apply XHCI_AVOID_BEI quirk to all Intel
xHCI controllers
On Mon, Mar 16, 2015 at 3:47 PM, Mathias Nyman <mathias.nyman@...el.com> wrote:
> On 16.03.2015 16:31, Alistair Grant wrote:
>> On Mon, Mar 16, 2015 at 1:55 PM, Mathias Nyman
>> <mathias.nyman@...ux.intel.com> wrote:
>>> On 15.03.2015 21:18, Alistair Grant wrote:
>>>> On Sun, Mar 15, 2015 at 3:54 PM, Alistair Grant <akgrant0710@...il.com> wrote:
>>>>> On Thu, Mar 12, 2015 at 8:14 PM, Alistair Grant <akgrant0710@...il.com> wrote:
>>>>>> On Thu, Mar 12, 2015 at 11:15 AM, Lu Baolu <baolu.lu@...ux.intel.com> wrote:
>>>>>>> When a device with an isochronous endpoint is plugged into the Intel
>>>>>>> xHCI host controller, and the driver submits multiple frames per URB,
>>>>>>> the xHCI driver will set the Block Event Interrupt (BEI) flag on all
>>>>>>> but the last TD for the URB. This causes the host controller to place
>>>>>>> an event on the event ring, but not send an interrupt. When the last
>>>>>>> TD for the URB completes, BEI is cleared, and we get an interrupt for
>>>>>>> the whole URB.
>>>>>>>
>>>>>>> However, under Intel xHCI host controllers, if the event ring is full
>>>>>>> of events from transfers with BEI set, an "Event Ring is Full" event
>>>>>>> will be posted to the last entry of the event ring, but no interrupt
>>>>>>> is generated. Host will cease all transfer and command executions and
>>>>>>> wait until software completes handling the pending events in the event
>>>>>>> ring. That means xHC stops, but event of "event ring is full" is not
>>>>>>> notified. As the result, the xHC looks like dead to user.
>>>>>>>
>>>>>>> This patch is to apply XHCI_AVOID_BEI quirk to Intel xHC devices. And
>>>>>>> it should be backported to kernels as old as 3.0, that contains the
>>>>>>> commit 69e848c2090a ("Intel xhci: Support EHCI/xHCI port switching.").
>>>>>>>
>>>>>>> Signed-off-by: Lu Baolu <baolu.lu@...ux.intel.com>
>>>>>>> Cc: stable@...r.kernel.org
>>>>>>> ---
>>>>>>> drivers/usb/host/xhci-pci.c | 2 +-
>>>>>>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>>>>>>
>>>>>>> diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
>>>>>>> index fd53c9e..2af32e2 100644
>>>>>>> --- a/drivers/usb/host/xhci-pci.c
>>>>>>> +++ b/drivers/usb/host/xhci-pci.c
>>>>>>> @@ -115,6 +115,7 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
>>>>>>> if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
>>>>>>> xhci->quirks |= XHCI_LPM_SUPPORT;
>>>>>>> xhci->quirks |= XHCI_INTEL_HOST;
>>>>>>> + xhci->quirks |= XHCI_AVOID_BEI;
>>>>>>> }
>>>>>>> if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
>>>>>>> pdev->device == PCI_DEVICE_ID_INTEL_PANTHERPOINT_XHCI) {
>>>>>>> @@ -130,7 +131,6 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
>>>>>>> * PPT chipsets.
>>>>>>> */
>>>>>>> xhci->quirks |= XHCI_SPURIOUS_REBOOT;
>>>>>>> - xhci->quirks |= XHCI_AVOID_BEI;
>>>>>>> }
>>>>>>> if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
>>>>>>> pdev->device == PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI) {
>>>>>>> --
>>>>>>> 2.1.0
>>>>>>>
>>>>>>> --
>>>>>>
>>>>>> This works for me...
>>>>>>
>>>>>> Computer: Dell XPS13 9333
>>>>>> USB controller: Intel Corporation 8 Series USB xHCI HC (rev 04)
>>>>>> (prog-if 30 [XHCI])
>>>>>> Kernel: 3.19.1
>>>>>> USB Device: Hauppauge USB-Live2
>>>>>>
>>>>>> Please let me know if I can help in any other way.
>>>>>>
>>>>>> Tested-by: Alistair Grant <akgrant0710@...il.com>
>>>>>
>>>>> Just FYI...
>>>>>
>>>>> I was able to test this on a slightly older laptop that had both USB2
>>>>> and USB3 ports and can confirm that it also works there:
>>>>>
>>>>> 00:14.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset
>>>>> Family USB xHCI Host Controller (rev 04)
>>>>
>>>> It looks like I may have signed-off a little too soon. While the patch is
>>>> working correctly if the Hauppauge Live2 is plugged in after the system has
>>>> booted and settled down (my normal use case), it fails if the Live2 is
>>>> plugged in while the system is booted up.
>>>>
>>>> Unplugging the Live2 after recording (which appears to succeed from the
>>>> command line, but had no audio), executing lsusb just hangs.
>>>>
>>>> I've included what I think is the relevant portions of /var/log/syslog
>>>> below. If you'd like the entire log file posted somewhere please let me
>>>> know.
>>>
>>> Hi
>>>
>>> What kernel did you try this patch on?
>>>
>>> The output look a bit like the regression in 4.0-rc3 caused by:
>>> commit 27082e2654dc148078b0abdfc3c8e5ccbde0ebfa
>>> xhci: Clear the host side toggle manually when endpoint is 'soft reset'
>>>
>>> which will be reverted (in 4.0-rc5 I hope).
>>>
>>> If you boot the same base kernel without the patch does it work then?
>>>
>>> -Mathias
>>>
>>
>> Hi Mathias,
>>
>> This is on top of 3.19.1 with only the XHCI_AVOID_BEI quirk patch applied.
>>
>> If you'd like me to try it against 4.0-rc3, 4 or 5, please let me know.
>
> Thanks, no that's not needed.
> But did the patch cause regression on top of 3.19.1?
> I mean, did it make 3.19.1 worse, better or just different for you, while
> booting with the device connected?
Recording doesn't work at all with 3.19.1 without the patch. I've
included an extract from syslog below of attempting to record with a
clean 3.19.1 system (i.e. XHCI_AVOID_BEI quirk patch NOT applied, to
state the obvious).
I did mean to say in my original message that I would still release
this patch even with the current known issue as it still improves the
overall stability of the system.
Thanks again,
Alistair
--
Mar 15 12:06:19 alistair-XPS13 kernel: [ 0.000000] Linux version
3.19.1 (alistair@...stair-XPS13) (gcc version 4.9.1 (Ubuntu
4.9.1-16ubuntu6) ) #5 SMP Sun Mar 15 10:28:35 CET 2015
...
Mar 15 12:07:02 alistair-XPS13 kernel: [ 61.662479] usb 1-2: new
high-speed USB device number 5 using xhci_hcd
Mar 15 12:07:02 alistair-XPS13 kernel: [ 61.792722] usb 1-2: New USB
device found, idVendor=2040, idProduct=c200
Mar 15 12:07:02 alistair-XPS13 kernel: [ 61.792729] usb 1-2: New USB
device strings: Mfr=1, Product=2, SerialNumber=3
Mar 15 12:07:02 alistair-XPS13 kernel: [ 61.792733] usb 1-2:
Product: Hauppauge Device
Mar 15 12:07:02 alistair-XPS13 kernel: [ 61.792736] usb 1-2:
Manufacturer: Hauppauge
Mar 15 12:07:02 alistair-XPS13 kernel: [ 61.792739] usb 1-2:
SerialNumber: 0011446325
Mar 15 12:07:02 alistair-XPS13 mtp-probe: checking bus 1, device 5:
"/sys/devices/pci0000:00/0000:00:14.0/usb1/1-2"
Mar 15 12:07:02 alistair-XPS13 mtp-probe: bus: 1, device: 5 was not an
MTP device
Mar 15 12:07:02 alistair-XPS13 kernel: [ 61.938430] cx231xx 1-2:1.1:
New device Hauppauge Hauppauge Device @ 480 Mbps (2040:c200) with 6
interfaces
Mar 15 12:07:02 alistair-XPS13 kernel: [ 61.938474] cx231xx 1-2:1.1:
can't change interface 3 alt no. to 3: Max. Pkt size = 0
Mar 15 12:07:02 alistair-XPS13 kernel: [ 61.939860] cx231xx 1-2:1.1:
can't change interface 4 alt no. to 1: Max. Pkt size = 0
Mar 15 12:07:02 alistair-XPS13 kernel: [ 61.941018] cx231xx 1-2:1.1:
Identified as Hauppauge USB Live 2 (card=9)
Mar 15 12:07:02 alistair-XPS13 kernel: [ 61.941223] i2c i2c-10:
Added multiplexed i2c bus 12
Mar 15 12:07:02 alistair-XPS13 kernel: [ 61.941268] i2c i2c-10:
Added multiplexed i2c bus 13
Mar 15 12:07:02 alistair-XPS13 kernel: [ 62.051171] cx25840 9-0044:
cx23102 A/V decoder found @ 0x88 (cx231xx #0-0)
Mar 15 12:07:04 alistair-XPS13 kernel: [ 64.035849] cx25840 9-0044:
loaded v4l-cx231xx-avcore-01.fw firmware (16382 bytes)
Mar 15 12:07:04 alistair-XPS13 kernel: [ 64.068048] cx231xx 1-2:1.1:
v4l2 driver version 0.0.3
Mar 15 12:07:04 alistair-XPS13 kernel: [ 64.158972] cx231xx 1-2:1.1:
Registered video device video1 [v4l2]
Mar 15 12:07:04 alistair-XPS13 kernel: [ 64.159120] cx231xx 1-2:1.1:
Registered VBI device vbi0
Mar 15 12:07:04 alistair-XPS13 kernel: [ 64.159126] cx231xx 1-2:1.1:
video EndPoint Addr 0x84, Alternate settings: 5
Mar 15 12:07:04 alistair-XPS13 kernel: [ 64.159131] cx231xx 1-2:1.1:
VBI EndPoint Addr 0x85, Alternate settings: 2
Mar 15 12:07:04 alistair-XPS13 kernel: [ 64.159134] cx231xx 1-2:1.1:
sliced CC EndPoint Addr 0x86, Alternate settings: 2
Mar 15 12:07:04 alistair-XPS13 kernel: [ 64.162650] usbcore:
registered new interface driver cx231xx
Mar 15 12:07:04 alistair-XPS13 kernel: [ 64.207250] cx231xx 1-2:1.1:
audio EndPoint Addr 0x83, Alternate settings: 3
Mar 15 12:07:04 alistair-XPS13 kernel: [ 64.207257] cx231xx 1-2:1.1:
Cx231xx Audio Extension initialized
Mar 15 12:07:04 alistair-XPS13 pulseaudio[3267]: [pulseaudio]
source.c: Default and alternate sample rates are the same.
Mar 15 12:07:04 alistair-XPS13 rtkit-daemon[2122]: Successfully made
thread 3840 of process 3267 (n/a) owned by '1000' RT at priority 5.
Mar 15 12:07:04 alistair-XPS13 rtkit-daemon[2122]: Supervising 5
threads of 1 processes of 1 users.
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.743926] xhci_hcd
0000:00:14.0: xHCI host not responding to stop endpoint command.
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.743935] xhci_hcd
0000:00:14.0: Assuming host is dying, halting host.
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.744038] usb 1-2: Not
enough bandwidth for altsetting 0
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.744045] xhci_hcd
0000:00:14.0: HC died; cleaning up
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.744048] cx231xx 1-2:1.1:
can't change interface 2 alt no. to 0 (err=-19)
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.744051] cx231xx 1-2:1.1:
failed to set alternate setting !
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.744141] cx231xx 1-2:1.1:
cx231xx_send_usb_command: failed with status --19
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.744150] cx231xx 1-2:1.1:
cx231xx_send_usb_command: failed with status --19
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.744181] usb 1-2: USB
disconnect, device number 5
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.744461] cx231xx 1-2:1.1:
device video1 is open! Deregistration and memory deallocation are
deferred on close.
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.773315] usb 1-2:1.1:
V4L2 device vbi0 deregistered
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.773851] ------------[
cut here ]------------
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.773863] WARNING: CPU: 3
PID: 3871 at fs/sysfs/group.c:219 sysfs_remove_group+0xa1/0xb0()
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.773866] sysfs group
ffffffff81cc06a0 not found for kobject 'vbi0'
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.773869] Modules linked
in: cx231xx_alsa cx25840 cx231xx videobuf_vmalloc tveeprom cx2341x
rc_core videobuf_core i2c_mux ctr ccm pci_stub vboxpci(OE)
vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) xt_CHECKSUM iptable_mangle
xt_tcpudp bridge stp llc iptable_filter ip_tables x_tables arc4
dm_crypt iwlmvm mac80211 rpcsec_gss_krb5 nfsv4 iwlwifi uvcvideo
intel_rapl iosf_mbi x86_pkg_temp_thermal intel_powerclamp
videobuf2_vmalloc kvm_intel joydev videobuf2_memops videobuf2_core
hid_rmi btusb snd_soc_rt5640 snd_soc_rl6231 snd_hda_codec_realtek
snd_hda_codec_generic hid_multitouch dell_wmi sparse_keymap
v4l2_common snd_hda_codec_hdmi videodev kvm cfg80211 media dell_laptop
snd_soc_core dcdbas snd_hda_intel crct10dif_pclmul snd_hda_controller
crc32_pclmul snd_compress ghash_clmulni_intel aesni_intel aes_x86_64
snd_hda_codec lrw gf128mul glue_helper ablk_helper cryptd
snd_pcm_dmaengine snd_seq_midi snd_hwdep snd_seq_midi_event
snd_rawmidi serio_raw mei_me snd_pcm mei snd_seq shpchp lpc_ich
snd_seq_device snd_timer snd i2c_hid soundcore i2c_designware_platform
dw_dmac snd_soc_sst_acpi i2c_designware_core 8250_dw
spi_pxa2xx_platform dw_dmac_core nfsd intel_rst mac_hid
intel_smartconnect auth_rpcgss rfcomm bnep nfs_acl nfs bluetooth lockd
grace sunrpc parport_pc ppdev coretemp lp parport fscache btrfs xor
raid6_pq i915 i2c_algo_bit drm_kms_helper usbhid ahci drm psmouse
libahci sdhci_acpi hid wmi sdhci video
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.774015] CPU: 3 PID: 3871
Comm: mythffmpeg Tainted: G OE 3.19.1 #5
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.774018] Hardware name:
Dell Inc. XPS13 9333/099TN4, BIOS A06 11/07/2014
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.774021]
ffffffff81ab926e ffff8800bdadbc78 ffffffff817a2883 0000000000000007
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.774027]
ffff8800bdadbcc8 ffff8800bdadbcb8 ffffffff8107324a ffff8800bdadbcd8
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.774031]
0000000000000000 ffffffff81cc06a0 ffff8800babe8898 ffff8800adaa11a0
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.774036] Call Trace:
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.774045]
[<ffffffff817a2883>] dump_stack+0x45/0x57
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.774051]
[<ffffffff8107324a>] warn_slowpath_common+0x8a/0xc0
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.774058]
[<ffffffff810732c6>] warn_slowpath_fmt+0x46/0x50
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.774065]
[<ffffffff8126539c>] ? kernfs_find_and_get_ns+0x4c/0x60
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.774070]
[<ffffffff81268c81>] sysfs_remove_group+0xa1/0xb0
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.774076]
[<ffffffff814f2ce7>] dpm_sysfs_remove+0x57/0x60
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.774083]
[<ffffffff814e6738>] device_del+0x58/0x270
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.774089]
[<ffffffff814e6972>] device_unregister+0x22/0x80
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.774104]
[<ffffffffc0b80848>] video_unregister_device+0x58/0x60 [videodev]
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.774115]
[<ffffffffc0f210c5>] cx231xx_release_analog_resources+0x125/0x170
[cx231xx]
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.774123]
[<ffffffffc0f23686>] cx231xx_release_resources+0x16/0x60 [cx231xx]
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.774131]
[<ffffffffc0f1f747>] cx231xx_v4l2_close+0x1e7/0x2d0 [cx231xx]
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.774142]
[<ffffffffc0b80498>] v4l2_release+0x38/0x80 [videodev]
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.774149]
[<ffffffff811ee267>] __fput+0xe7/0x250
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.774154]
[<ffffffff811ee41e>] ____fput+0xe/0x10
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.774160]
[<ffffffff81090b77>] task_work_run+0xb7/0xf0
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.774168]
[<ffffffff81014197>] do_notify_resume+0x97/0xb0
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.774175]
[<ffffffff817a9e0f>] int_signal+0x12/0x17
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.774179] ---[ end trace
d59337737e676686 ]---
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.774412] usb 1-3: USB
disconnect, device number 2
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.779434] usb 1-2:1.1:
V4L2 device video1 deregistered
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.779443] ------------[
cut here ]------------
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.779451] WARNING: CPU: 2
PID: 3871 at fs/sysfs/group.c:219 sysfs_remove_group+0xa1/0xb0()
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.779454] sysfs group
ffffffff81cc06a0 not found for kobject 'video1'
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.779456] Modules linked
in: cx231xx_alsa cx25840 cx231xx videobuf_vmalloc tveeprom cx2341x
rc_core videobuf_core i2c_mux ctr ccm pci_stub vboxpci(OE)
vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) xt_CHECKSUM iptable_mangle
xt_tcpudp bridge stp llc iptable_filter ip_tables x_tables arc4
dm_crypt iwlmvm mac80211 rpcsec_gss_krb5 nfsv4 iwlwifi uvcvideo
intel_rapl iosf_mbi x86_pkg_temp_thermal intel_powerclamp
videobuf2_vmalloc kvm_intel joydev videobuf2_memops videobuf2_core
hid_rmi btusb snd_soc_rt5640 snd_soc_rl6231 snd_hda_codec_realtek
snd_hda_codec_generic hid_multitouch dell_wmi sparse_keymap
v4l2_common snd_hda_codec_hdmi videodev kvm cfg80211 media dell_laptop
snd_soc_core dcdbas snd_hda_intel crct10dif_pclmul snd_hda_controller
crc32_pclmul snd_compress ghash_clmulni_intel aesni_intel aes_x86_64
snd_hda_codec lrw gf128mul glue_helper ablk_helper cryptd
snd_pcm_dmaengine snd_seq_midi snd_hwdep snd_seq_midi_event
snd_rawmidi serio_raw mei_me snd_pcm mei snd_seq shpchp lpc_ich
snd_seq_device snd_timer snd i2c_hid soundcore i2c_designware_platform
dw_dmac snd_soc_sst_acpi i2c_designware_core 8250_dw
spi_pxa2xx_platform dw_dmac_core nfsd intel_rst mac_hid
intel_smartconnect auth_rpcgss rfcomm bnep nfs_acl nfs bluetooth lockd
grace sunrpc parport_pc ppdev coretemp lp parport fscache btrfs xor
raid6_pq i915 i2c_algo_bit drm_kms_helper usbhid ahci drm psmouse
libahci sdhci_acpi hid wmi sdhci video
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.779583] CPU: 2 PID: 3871
Comm: mythffmpeg Tainted: G W OE 3.19.1 #5
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.779585] Hardware name:
Dell Inc. XPS13 9333/099TN4, BIOS A06 11/07/2014
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.779588]
ffffffff81ab926e ffff8800bdadbc78 ffffffff817a2883 0000000000000007
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.779593]
ffff8800bdadbcc8 ffff8800bdadbcb8 ffffffff8107324a ffff8800b0b69708
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.779597]
0000000000000000 ffffffff81cc06a0 ffff8800babe9098 ffff8800adaa11a0
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.779602] Call Trace:
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.779609]
[<ffffffff817a2883>] dump_stack+0x45/0x57
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.779616]
[<ffffffff8107324a>] warn_slowpath_common+0x8a/0xc0
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.779621]
[<ffffffff810732c6>] warn_slowpath_fmt+0x46/0x50
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.779627]
[<ffffffff8126539c>] ? kernfs_find_and_get_ns+0x4c/0x60
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.779631]
[<ffffffff81268c81>] sysfs_remove_group+0xa1/0xb0
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.779636]
[<ffffffff814f2ce7>] dpm_sysfs_remove+0x57/0x60
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.779641]
[<ffffffff814e6738>] device_del+0x58/0x270
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.779646]
[<ffffffff814e6972>] device_unregister+0x22/0x80
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.779658]
[<ffffffffc0b80848>] video_unregister_device+0x58/0x60 [videodev]
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.779666]
[<ffffffffc0f210b5>] cx231xx_release_analog_resources+0x115/0x170
[cx231xx]
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.779673]
[<ffffffffc0f23686>] cx231xx_release_resources+0x16/0x60 [cx231xx]
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.779679]
[<ffffffffc0f1f747>] cx231xx_v4l2_close+0x1e7/0x2d0 [cx231xx]
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.779689]
[<ffffffffc0b80498>] v4l2_release+0x38/0x80 [videodev]
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.779694]
[<ffffffff811ee267>] __fput+0xe7/0x250
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.779698]
[<ffffffff811ee41e>] ____fput+0xe/0x10
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.779702]
[<ffffffff81090b77>] task_work_run+0xb7/0xf0
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.779709]
[<ffffffff81014197>] do_notify_resume+0x97/0xb0
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.779715]
[<ffffffff817a9e0f>] int_signal+0x12/0x17
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.779718] ---[ end trace
d59337737e676687 ]---
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782196] ------------[
cut here ]------------
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782206] WARNING: CPU: 2
PID: 3871 at fs/sysfs/group.c:219 sysfs_remove_group+0xa1/0xb0()
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782208] sysfs group
ffffffff81cc06a0 not found for kobject 'i2c-13'
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782210] Modules linked
in: cx231xx_alsa cx25840 cx231xx videobuf_vmalloc tveeprom cx2341x
rc_core videobuf_core i2c_mux ctr ccm pci_stub vboxpci(OE)
vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) xt_CHECKSUM iptable_mangle
xt_tcpudp bridge stp llc iptable_filter ip_tables x_tables arc4
dm_crypt iwlmvm mac80211 rpcsec_gss_krb5 nfsv4 iwlwifi uvcvideo
intel_rapl iosf_mbi x86_pkg_temp_thermal intel_powerclamp
videobuf2_vmalloc kvm_intel joydev videobuf2_memops videobuf2_core
hid_rmi btusb snd_soc_rt5640 snd_soc_rl6231 snd_hda_codec_realtek
snd_hda_codec_generic hid_multitouch dell_wmi sparse_keymap
v4l2_common snd_hda_codec_hdmi videodev kvm cfg80211 media dell_laptop
snd_soc_core dcdbas snd_hda_intel crct10dif_pclmul snd_hda_controller
crc32_pclmul snd_compress ghash_clmulni_intel aesni_intel aes_x86_64
snd_hda_codec lrw gf128mul glue_helper ablk_helper cryptd
snd_pcm_dmaengine snd_seq_midi snd_hwdep snd_seq_midi_event
snd_rawmidi serio_raw mei_me snd_pcm mei snd_seq shpchp lpc_ich
snd_seq_device snd_timer snd i2c_hid soundcore i2c_designware_platform
dw_dmac snd_soc_sst_acpi i2c_designware_core 8250_dw
spi_pxa2xx_platform dw_dmac_core nfsd intel_rst mac_hid
intel_smartconnect auth_rpcgss rfcomm bnep nfs_acl nfs bluetooth lockd
grace sunrpc parport_pc ppdev coretemp lp parport fscache btrfs xor
raid6_pq i915 i2c_algo_bit drm_kms_helper usbhid ahci drm psmouse
libahci sdhci_acpi hid wmi sdhci video
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782330] CPU: 2 PID: 3871
Comm: mythffmpeg Tainted: G W OE 3.19.1 #5
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782333] Hardware name:
Dell Inc. XPS13 9333/099TN4, BIOS A06 11/07/2014
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782335]
ffffffff81ab926e ffff8800bdadbbd8 ffffffff817a2883 0000000000000007
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782340]
ffff8800bdadbc28 ffff8800bdadbc18 ffffffff8107324a ffff88021231df78
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782343]
0000000000000000 ffffffff81cc06a0 ffff88020185c458 ffff88020185c448
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782348] Call Trace:
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782354]
[<ffffffff817a2883>] dump_stack+0x45/0x57
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782360]
[<ffffffff8107324a>] warn_slowpath_common+0x8a/0xc0
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782365]
[<ffffffff810732c6>] warn_slowpath_fmt+0x46/0x50
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782371]
[<ffffffff8126539c>] ? kernfs_find_and_get_ns+0x4c/0x60
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782375]
[<ffffffff81264be6>] ? kernfs_put+0x106/0x1e0
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782379]
[<ffffffff81268c81>] sysfs_remove_group+0xa1/0xb0
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782384]
[<ffffffff814f2ce7>] dpm_sysfs_remove+0x57/0x60
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782390]
[<ffffffff814e6738>] device_del+0x58/0x270
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782395]
[<ffffffff81265f73>] ? kernfs_remove_by_name_ns+0x53/0xa0
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782400]
[<ffffffff814e6972>] device_unregister+0x22/0x80
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782405]
[<ffffffff8160d9cf>] i2c_del_adapter+0x28f/0x300
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782410]
[<ffffffff81265f8c>] ? kernfs_remove_by_name_ns+0x6c/0xa0
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782415]
[<ffffffffc0c2a1cb>] i2c_del_mux_adapter+0x6b/0x90 [i2c_mux]
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782423]
[<ffffffffc0f22261>] cx231xx_i2c_mux_unregister+0x21/0x40 [cx231xx]
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782431]
[<ffffffffc0f2420b>] cx231xx_dev_uninit+0x1b/0x50 [cx231xx]
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782438]
[<ffffffffc0f2369e>] cx231xx_release_resources+0x2e/0x60 [cx231xx]
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782444]
[<ffffffffc0f1f747>] cx231xx_v4l2_close+0x1e7/0x2d0 [cx231xx]
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782455]
[<ffffffffc0b80498>] v4l2_release+0x38/0x80 [videodev]
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782460]
[<ffffffff811ee267>] __fput+0xe7/0x250
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782464]
[<ffffffff811ee41e>] ____fput+0xe/0x10
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782468]
[<ffffffff81090b77>] task_work_run+0xb7/0xf0
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782474]
[<ffffffff81014197>] do_notify_resume+0x97/0xb0
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782479]
[<ffffffff817a9e0f>] int_signal+0x12/0x17
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782482] ---[ end trace
d59337737e676688 ]---
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782511] ------------[
cut here ]------------
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782516] WARNING: CPU: 2
PID: 3871 at fs/sysfs/group.c:219 sysfs_remove_group+0xa1/0xb0()
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782518] sysfs group
ffffffff81cc06a0 not found for kobject 'i2c-12'
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782520] Modules linked
in: cx231xx_alsa cx25840 cx231xx videobuf_vmalloc tveeprom cx2341x
rc_core videobuf_core i2c_mux ctr ccm pci_stub vboxpci(OE)
vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) xt_CHECKSUM iptable_mangle
xt_tcpudp bridge stp llc iptable_filter ip_tables x_tables arc4
dm_crypt iwlmvm mac80211 rpcsec_gss_krb5 nfsv4 iwlwifi uvcvideo
intel_rapl iosf_mbi x86_pkg_temp_thermal intel_powerclamp
videobuf2_vmalloc kvm_intel joydev videobuf2_memops videobuf2_core
hid_rmi btusb snd_soc_rt5640 snd_soc_rl6231 snd_hda_codec_realtek
snd_hda_codec_generic hid_multitouch dell_wmi sparse_keymap
v4l2_common snd_hda_codec_hdmi videodev kvm cfg80211 media dell_laptop
snd_soc_core dcdbas snd_hda_intel crct10dif_pclmul snd_hda_controller
crc32_pclmul snd_compress ghash_clmulni_intel aesni_intel aes_x86_64
snd_hda_codec lrw gf128mul glue_helper ablk_helper cryptd
snd_pcm_dmaengine snd_seq_midi snd_hwdep snd_seq_midi_event
snd_rawmidi serio_raw mei_me snd_pcm mei snd_seq shpchp lpc_ich
snd_seq_device snd_timer snd i2c_hid soundcore i2c_designware_platform
dw_dmac snd_soc_sst_acpi i2c_designware_core 8250_dw
spi_pxa2xx_platform dw_dmac_core nfsd intel_rst mac_hid
intel_smartconnect auth_rpcgss rfcomm bnep nfs_acl nfs bluetooth lockd
grace sunrpc parport_pc ppdev coretemp lp parport fscache btrfs xor
raid6_pq i915 i2c_algo_bit drm_kms_helper usbhid ahci drm psmouse
libahci sdhci_acpi hid wmi sdhci video
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782618] CPU: 2 PID: 3871
Comm: mythffmpeg Tainted: G W OE 3.19.1 #5
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782620] Hardware name:
Dell Inc. XPS13 9333/099TN4, BIOS A06 11/07/2014
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782622]
ffffffff81ab926e ffff8800bdadbbd8 ffffffff817a2883 0000000000000007
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782626]
ffff8800bdadbc28 ffff8800bdadbc18 ffffffff8107324a ffff88021231d5a0
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782630]
0000000000000000 ffffffff81cc06a0 ffff88020185c058 ffff88020185c048
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782634] Call Trace:
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782639]
[<ffffffff817a2883>] dump_stack+0x45/0x57
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782644]
[<ffffffff8107324a>] warn_slowpath_common+0x8a/0xc0
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782649]
[<ffffffff810732c6>] warn_slowpath_fmt+0x46/0x50
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782655]
[<ffffffff8126539c>] ? kernfs_find_and_get_ns+0x4c/0x60
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782659]
[<ffffffff81268c81>] sysfs_remove_group+0xa1/0xb0
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782664]
[<ffffffff814f2ce7>] dpm_sysfs_remove+0x57/0x60
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782669]
[<ffffffff814e6738>] device_del+0x58/0x270
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782674]
[<ffffffff81265f73>] ? kernfs_remove_by_name_ns+0x53/0xa0
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782679]
[<ffffffff814e6972>] device_unregister+0x22/0x80
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782683]
[<ffffffff8160d9cf>] i2c_del_adapter+0x28f/0x300
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782687]
[<ffffffff81265f8c>] ? kernfs_remove_by_name_ns+0x6c/0xa0
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782692]
[<ffffffffc0c2a1cb>] i2c_del_mux_adapter+0x6b/0x90 [i2c_mux]
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782699]
[<ffffffffc0f22261>] cx231xx_i2c_mux_unregister+0x21/0x40 [cx231xx]
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782706]
[<ffffffffc0f24215>] cx231xx_dev_uninit+0x25/0x50 [cx231xx]
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782712]
[<ffffffffc0f2369e>] cx231xx_release_resources+0x2e/0x60 [cx231xx]
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782718]
[<ffffffffc0f1f747>] cx231xx_v4l2_close+0x1e7/0x2d0 [cx231xx]
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782728]
[<ffffffffc0b80498>] v4l2_release+0x38/0x80 [videodev]
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782733]
[<ffffffff811ee267>] __fput+0xe7/0x250
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782737]
[<ffffffff811ee41e>] ____fput+0xe/0x10
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782741]
[<ffffffff81090b77>] task_work_run+0xb7/0xf0
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782746]
[<ffffffff81014197>] do_notify_resume+0x97/0xb0
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782751]
[<ffffffff817a9e0f>] int_signal+0x12/0x17
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782754] ---[ end trace
d59337737e676689 ]---
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782778] ------------[
cut here ]------------
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782783] WARNING: CPU: 2
PID: 3871 at fs/sysfs/group.c:219 sysfs_remove_group+0xa1/0xb0()
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782785] sysfs group
ffffffff81cc06a0 not found for kobject 'i2c-11'
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782786] Modules linked
in: cx231xx_alsa cx25840 cx231xx videobuf_vmalloc tveeprom cx2341x
rc_core videobuf_core i2c_mux ctr ccm pci_stub vboxpci(OE)
vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) xt_CHECKSUM iptable_mangle
xt_tcpudp bridge stp llc iptable_filter ip_tables x_tables arc4
dm_crypt iwlmvm mac80211 rpcsec_gss_krb5 nfsv4 iwlwifi uvcvideo
intel_rapl iosf_mbi x86_pkg_temp_thermal intel_powerclamp
videobuf2_vmalloc kvm_intel joydev videobuf2_memops videobuf2_core
hid_rmi btusb snd_soc_rt5640 snd_soc_rl6231 snd_hda_codec_realtek
snd_hda_codec_generic hid_multitouch dell_wmi sparse_keymap
v4l2_common snd_hda_codec_hdmi videodev kvm cfg80211 media dell_laptop
snd_soc_core dcdbas snd_hda_intel crct10dif_pclmul snd_hda_controller
crc32_pclmul snd_compress ghash_clmulni_intel aesni_intel aes_x86_64
snd_hda_codec lrw gf128mul glue_helper ablk_helper cryptd
snd_pcm_dmaengine snd_seq_midi snd_hwdep snd_seq_midi_event
snd_rawmidi serio_raw mei_me snd_pcm mei snd_seq shpchp lpc_ich
snd_seq_device snd_timer snd i2c_hid soundcore i2c_designware_platform
dw_dmac snd_soc_sst_acpi i2c_designware_core 8250_dw
spi_pxa2xx_platform dw_dmac_core nfsd intel_rst mac_hid
intel_smartconnect auth_rpcgss rfcomm bnep nfs_acl nfs bluetooth lockd
grace sunrpc parport_pc ppdev coretemp lp parport fscache btrfs xor
raid6_pq i915 i2c_algo_bit drm_kms_helper usbhid ahci drm psmouse
libahci sdhci_acpi hid wmi sdhci video
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782889] CPU: 2 PID: 3871
Comm: mythffmpeg Tainted: G W OE 3.19.1 #5
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782891] Hardware name:
Dell Inc. XPS13 9333/099TN4, BIOS A06 11/07/2014
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782894]
ffffffff81ab926e ffff8800bdadbc28 ffffffff817a2883 0000000000000007
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782898]
ffff8800bdadbc78 ffff8800bdadbc68 ffffffff8107324a ffff880201097ca8
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782903]
0000000000000000 ffffffff81cc06a0 ffff8800adaa0cc0 ffff8800adaa0cb0
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782907] Call Trace:
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782912]
[<ffffffff817a2883>] dump_stack+0x45/0x57
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782917]
[<ffffffff8107324a>] warn_slowpath_common+0x8a/0xc0
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782922]
[<ffffffff810732c6>] warn_slowpath_fmt+0x46/0x50
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782927]
[<ffffffff8126539c>] ? kernfs_find_and_get_ns+0x4c/0x60
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782931]
[<ffffffff81268c81>] sysfs_remove_group+0xa1/0xb0
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782936]
[<ffffffff814f2ce7>] dpm_sysfs_remove+0x57/0x60
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782941]
[<ffffffff814e6738>] device_del+0x58/0x270
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782946]
[<ffffffff81265f73>] ? kernfs_remove_by_name_ns+0x53/0xa0
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782951]
[<ffffffff814e6972>] device_unregister+0x22/0x80
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782955]
[<ffffffff8160d9cf>] i2c_del_adapter+0x28f/0x300
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782963]
[<ffffffffc0f221b2>] cx231xx_i2c_unregister+0x12/0x20 [cx231xx]
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782970]
[<ffffffffc0f24221>] cx231xx_dev_uninit+0x31/0x50 [cx231xx]
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782977]
[<ffffffffc0f2369e>] cx231xx_release_resources+0x2e/0x60 [cx231xx]
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782983]
[<ffffffffc0f1f747>] cx231xx_v4l2_close+0x1e7/0x2d0 [cx231xx]
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782993]
[<ffffffffc0b80498>] v4l2_release+0x38/0x80 [videodev]
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.782997]
[<ffffffff811ee267>] __fput+0xe7/0x250
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783001]
[<ffffffff811ee41e>] ____fput+0xe/0x10
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783004]
[<ffffffff81090b77>] task_work_run+0xb7/0xf0
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783009]
[<ffffffff81014197>] do_notify_resume+0x97/0xb0
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783014]
[<ffffffff817a9e0f>] int_signal+0x12/0x17
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783017] ---[ end trace
d59337737e67668a ]---
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783040] ------------[
cut here ]------------
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783044] WARNING: CPU: 2
PID: 3871 at fs/sysfs/group.c:219 sysfs_remove_group+0xa1/0xb0()
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783046] sysfs group
ffffffff81cc06a0 not found for kobject 'i2c-10'
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783048] Modules linked
in: cx231xx_alsa cx25840 cx231xx videobuf_vmalloc tveeprom cx2341x
rc_core videobuf_core i2c_mux ctr ccm pci_stub vboxpci(OE)
vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) xt_CHECKSUM iptable_mangle
xt_tcpudp bridge stp llc iptable_filter ip_tables x_tables arc4
dm_crypt iwlmvm mac80211 rpcsec_gss_krb5 nfsv4 iwlwifi uvcvideo
intel_rapl iosf_mbi x86_pkg_temp_thermal intel_powerclamp
videobuf2_vmalloc kvm_intel joydev videobuf2_memops videobuf2_core
hid_rmi btusb snd_soc_rt5640 snd_soc_rl6231 snd_hda_codec_realtek
snd_hda_codec_generic hid_multitouch dell_wmi sparse_keymap
v4l2_common snd_hda_codec_hdmi videodev kvm cfg80211 media dell_laptop
snd_soc_core dcdbas snd_hda_intel crct10dif_pclmul snd_hda_controller
crc32_pclmul snd_compress ghash_clmulni_intel aesni_intel aes_x86_64
snd_hda_codec lrw gf128mul glue_helper ablk_helper cryptd
snd_pcm_dmaengine snd_seq_midi snd_hwdep snd_seq_midi_event
snd_rawmidi serio_raw mei_me snd_pcm mei snd_seq shpchp lpc_ich
snd_seq_device snd_timer snd i2c_hid soundcore i2c_designware_platform
dw_dmac snd_soc_sst_acpi i2c_designware_core 8250_dw
spi_pxa2xx_platform dw_dmac_core nfsd intel_rst mac_hid
intel_smartconnect auth_rpcgss rfcomm bnep nfs_acl nfs bluetooth lockd
grace sunrpc parport_pc ppdev coretemp lp parport fscache btrfs xor
raid6_pq i915 i2c_algo_bit drm_kms_helper usbhid ahci drm psmouse
libahci sdhci_acpi hid wmi sdhci video
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783147] CPU: 2 PID: 3871
Comm: mythffmpeg Tainted: G W OE 3.19.1 #5
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783150] Hardware name:
Dell Inc. XPS13 9333/099TN4, BIOS A06 11/07/2014
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783152]
ffffffff81ab926e ffff8800bdadbc28 ffffffff817a2883 0000000000000007
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783155]
ffff8800bdadbc78 ffff8800bdadbc68 ffffffff8107324a ffff8802010973c0
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783159]
0000000000000000 ffffffff81cc06a0 ffff8800adaa0910 ffff8800adaa0900
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783164] Call Trace:
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783168]
[<ffffffff817a2883>] dump_stack+0x45/0x57
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783173]
[<ffffffff8107324a>] warn_slowpath_common+0x8a/0xc0
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783178]
[<ffffffff810732c6>] warn_slowpath_fmt+0x46/0x50
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783183]
[<ffffffff8126539c>] ? kernfs_find_and_get_ns+0x4c/0x60
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783186]
[<ffffffff81268c81>] sysfs_remove_group+0xa1/0xb0
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783190]
[<ffffffff814f2ce7>] dpm_sysfs_remove+0x57/0x60
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783195]
[<ffffffff814e6738>] device_del+0x58/0x270
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783200]
[<ffffffff81265f73>] ? kernfs_remove_by_name_ns+0x53/0xa0
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783205]
[<ffffffff814e6972>] device_unregister+0x22/0x80
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783208]
[<ffffffff8160d9cf>] i2c_del_adapter+0x28f/0x300
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783215]
[<ffffffffc0f221b2>] cx231xx_i2c_unregister+0x12/0x20 [cx231xx]
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783222]
[<ffffffffc0f2422d>] cx231xx_dev_uninit+0x3d/0x50 [cx231xx]
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783228]
[<ffffffffc0f2369e>] cx231xx_release_resources+0x2e/0x60 [cx231xx]
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783234]
[<ffffffffc0f1f747>] cx231xx_v4l2_close+0x1e7/0x2d0 [cx231xx]
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783244]
[<ffffffffc0b80498>] v4l2_release+0x38/0x80 [videodev]
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783249]
[<ffffffff811ee267>] __fput+0xe7/0x250
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783253]
[<ffffffff811ee41e>] ____fput+0xe/0x10
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783257]
[<ffffffff81090b77>] task_work_run+0xb7/0xf0
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783262]
[<ffffffff81014197>] do_notify_resume+0x97/0xb0
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783268]
[<ffffffff817a9e0f>] int_signal+0x12/0x17
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783271] ---[ end trace
d59337737e67668b ]---
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783293] ------------[
cut here ]------------
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783298] WARNING: CPU: 2
PID: 3871 at fs/sysfs/group.c:219 sysfs_remove_group+0xa1/0xb0()
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783300] sysfs group
ffffffff81cc06a0 not found for kobject '9-0044'
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783302] Modules linked
in: cx231xx_alsa cx25840 cx231xx videobuf_vmalloc tveeprom cx2341x
rc_core videobuf_core i2c_mux ctr ccm pci_stub vboxpci(OE)
vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) xt_CHECKSUM iptable_mangle
xt_tcpudp bridge stp llc iptable_filter ip_tables x_tables arc4
dm_crypt iwlmvm mac80211 rpcsec_gss_krb5 nfsv4 iwlwifi uvcvideo
intel_rapl iosf_mbi x86_pkg_temp_thermal intel_powerclamp
videobuf2_vmalloc kvm_intel joydev videobuf2_memops videobuf2_core
hid_rmi btusb snd_soc_rt5640 snd_soc_rl6231 snd_hda_codec_realtek
snd_hda_codec_generic hid_multitouch dell_wmi sparse_keymap
v4l2_common snd_hda_codec_hdmi videodev kvm cfg80211 media dell_laptop
snd_soc_core dcdbas snd_hda_intel crct10dif_pclmul snd_hda_controller
crc32_pclmul snd_compress ghash_clmulni_intel aesni_intel aes_x86_64
snd_hda_codec lrw gf128mul glue_helper ablk_helper cryptd
snd_pcm_dmaengine snd_seq_midi snd_hwdep snd_seq_midi_event
snd_rawmidi serio_raw mei_me snd_pcm mei snd_seq shpchp lpc_ich
snd_seq_device snd_timer snd i2c_hid soundcore i2c_designware_platform
dw_dmac snd_soc_sst_acpi i2c_designware_core 8250_dw
spi_pxa2xx_platform dw_dmac_core nfsd intel_rst mac_hid
intel_smartconnect auth_rpcgss rfcomm bnep nfs_acl nfs bluetooth lockd
grace sunrpc parport_pc ppdev coretemp lp parport fscache btrfs xor
raid6_pq i915 i2c_algo_bit drm_kms_helper usbhid ahci drm psmouse
libahci sdhci_acpi hid wmi sdhci video
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783408] CPU: 2 PID: 3871
Comm: mythffmpeg Tainted: G W OE 3.19.1 #5
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783410] Hardware name:
Dell Inc. XPS13 9333/099TN4, BIOS A06 11/07/2014
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783412]
ffffffff81ab926e ffff8800bdadbbd8 ffffffff817a2883 0000000000000007
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783417]
ffff8800bdadbc28 ffff8800bdadbc18 ffffffff8107324a ffff8800b0b7fe10
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783421]
0000000000000000 ffffffff81cc06a0 ffff880207467030 ffff8800adaa0550
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783426] Call Trace:
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783430]
[<ffffffff817a2883>] dump_stack+0x45/0x57
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783435]
[<ffffffff8107324a>] warn_slowpath_common+0x8a/0xc0
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783440]
[<ffffffff810732c6>] warn_slowpath_fmt+0x46/0x50
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783445]
[<ffffffff8126539c>] ? kernfs_find_and_get_ns+0x4c/0x60
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783449]
[<ffffffff81268c81>] sysfs_remove_group+0xa1/0xb0
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783453]
[<ffffffff814f2ce7>] dpm_sysfs_remove+0x57/0x60
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783458]
[<ffffffff814e6738>] device_del+0x58/0x270
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783462]
[<ffffffff8160bbf0>] ? __unregister_dummy+0x30/0x30
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783466]
[<ffffffff814e6972>] device_unregister+0x22/0x80
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783470]
[<ffffffff8160bc31>] __unregister_client+0x41/0x50
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783474]
[<ffffffff814e6393>] device_for_each_child+0x43/0x70
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783478]
[<ffffffff8160d96a>] i2c_del_adapter+0x22a/0x300
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783485]
[<ffffffffc0f221b2>] cx231xx_i2c_unregister+0x12/0x20 [cx231xx]
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783491]
[<ffffffffc0f24239>] cx231xx_dev_uninit+0x49/0x50 [cx231xx]
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783498]
[<ffffffffc0f2369e>] cx231xx_release_resources+0x2e/0x60 [cx231xx]
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783504]
[<ffffffffc0f1f747>] cx231xx_v4l2_close+0x1e7/0x2d0 [cx231xx]
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783514]
[<ffffffffc0b80498>] v4l2_release+0x38/0x80 [videodev]
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783519]
[<ffffffff811ee267>] __fput+0xe7/0x250
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783523]
[<ffffffff811ee41e>] ____fput+0xe/0x10
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783527]
[<ffffffff81090b77>] task_work_run+0xb7/0xf0
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783531]
[<ffffffff81014197>] do_notify_resume+0x97/0xb0
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783536]
[<ffffffff817a9e0f>] int_signal+0x12/0x17
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783539] ---[ end trace
d59337737e67668c ]---
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783569] ------------[
cut here ]------------
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783573] WARNING: CPU: 2
PID: 3871 at fs/sysfs/group.c:219 sysfs_remove_group+0xa1/0xb0()
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783576] sysfs group
ffffffff81cc06a0 not found for kobject 'i2c-9'
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783578] Modules linked
in: cx231xx_alsa cx25840 cx231xx videobuf_vmalloc tveeprom cx2341x
rc_core videobuf_core i2c_mux ctr ccm pci_stub vboxpci(OE)
vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) xt_CHECKSUM iptable_mangle
xt_tcpudp bridge stp llc iptable_filter ip_tables x_tables arc4
dm_crypt iwlmvm mac80211 rpcsec_gss_krb5 nfsv4 iwlwifi uvcvideo
intel_rapl iosf_mbi x86_pkg_temp_thermal intel_powerclamp
videobuf2_vmalloc kvm_intel joydev videobuf2_memops videobuf2_core
hid_rmi btusb snd_soc_rt5640 snd_soc_rl6231 snd_hda_codec_realtek
snd_hda_codec_generic hid_multitouch dell_wmi sparse_keymap
v4l2_common snd_hda_codec_hdmi videodev kvm cfg80211 media dell_laptop
snd_soc_core dcdbas snd_hda_intel crct10dif_pclmul snd_hda_controller
crc32_pclmul snd_compress ghash_clmulni_intel aesni_intel aes_x86_64
snd_hda_codec lrw gf128mul glue_helper ablk_helper cryptd
snd_pcm_dmaengine snd_seq_midi snd_hwdep snd_seq_midi_event
snd_rawmidi serio_raw mei_me snd_pcm mei snd_seq shpchp lpc_ich
snd_seq_device snd_timer snd i2c_hid soundcore i2c_designware_platform
dw_dmac snd_soc_sst_acpi i2c_designware_core 8250_dw
spi_pxa2xx_platform dw_dmac_core nfsd intel_rst mac_hid
intel_smartconnect auth_rpcgss rfcomm bnep nfs_acl nfs bluetooth lockd
grace sunrpc parport_pc ppdev coretemp lp parport fscache btrfs xor
raid6_pq i915 i2c_algo_bit drm_kms_helper usbhid ahci drm psmouse
libahci sdhci_acpi hid wmi sdhci video
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783681] CPU: 2 PID: 3871
Comm: mythffmpeg Tainted: G W OE 3.19.1 #5
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783683] Hardware name:
Dell Inc. XPS13 9333/099TN4, BIOS A06 11/07/2014
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783685]
ffffffff81ab926e ffff8800bdadbc28 ffffffff817a2883 0000000000000007
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783689]
ffff8800bdadbc78 ffff8800bdadbc68 ffffffff8107324a ffff88020753a258
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783693]
0000000000000000 ffffffff81cc06a0 ffff8800adaa0560 ffff8800adaa0550
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783696] Call Trace:
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783701]
[<ffffffff817a2883>] dump_stack+0x45/0x57
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783706]
[<ffffffff8107324a>] warn_slowpath_common+0x8a/0xc0
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783711]
[<ffffffff810732c6>] warn_slowpath_fmt+0x46/0x50
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783716]
[<ffffffff8126539c>] ? kernfs_find_and_get_ns+0x4c/0x60
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783720]
[<ffffffff81268c81>] sysfs_remove_group+0xa1/0xb0
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783724]
[<ffffffff814f2ce7>] dpm_sysfs_remove+0x57/0x60
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783729]
[<ffffffff814e6738>] device_del+0x58/0x270
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783734]
[<ffffffff81265f73>] ? kernfs_remove_by_name_ns+0x53/0xa0
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783738]
[<ffffffff814e6972>] device_unregister+0x22/0x80
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783742]
[<ffffffff8160d9cf>] i2c_del_adapter+0x28f/0x300
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783750]
[<ffffffffc0f221b2>] cx231xx_i2c_unregister+0x12/0x20 [cx231xx]
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783756]
[<ffffffffc0f24239>] cx231xx_dev_uninit+0x49/0x50 [cx231xx]
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783762]
[<ffffffffc0f2369e>] cx231xx_release_resources+0x2e/0x60 [cx231xx]
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783768]
[<ffffffffc0f1f747>] cx231xx_v4l2_close+0x1e7/0x2d0 [cx231xx]
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783778]
[<ffffffffc0b80498>] v4l2_release+0x38/0x80 [videodev]
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783783]
[<ffffffff811ee267>] __fput+0xe7/0x250
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783787]
[<ffffffff811ee41e>] ____fput+0xe/0x10
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783792]
[<ffffffff81090b77>] task_work_run+0xb7/0xf0
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783796]
[<ffffffff81014197>] do_notify_resume+0x97/0xb0
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783802]
[<ffffffff817a9e0f>] int_signal+0x12/0x17
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.783805] ---[ end trace
d59337737e67668d ]---
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.824718] usb 1-5: USB
disconnect, device number 3
Mar 15 12:07:41 alistair-XPS13 bluetoothd[511]: Unregister path:
/org/bluez/511/hci0
Mar 15 12:07:41 alistair-XPS13 bluetoothd[511]: Endpoint unregistered:
sender=:1.79 path=/MediaEndpoint/A2DPSink
Mar 15 12:07:41 alistair-XPS13 bluetoothd[511]: Endpoint unregistered:
sender=:1.79 path=/MediaEndpoint/A2DPSource
Mar 15 12:07:41 alistair-XPS13 bluetoothd[511]: Endpoint unregistered:
sender=:1.79 path=/MediaEndpoint/HFPAG
Mar 15 12:07:41 alistair-XPS13 bluetoothd[511]: Endpoint unregistered:
sender=:1.79 path=/MediaEndpoint/HFPHS
Mar 15 12:07:41 alistair-XPS13 kernel: [ 100.860389] usb 1-6: USB
disconnect, device number 4
Mar 15 12:08:12 alistair-XPS13 sudo: pam_ecryptfs:
pam_sm_authenticate: /home/alistair is already mounted
Mar 15 12:08:12 alistair-XPS13 rsyslogd: [origin software="rsyslogd"
swVersion="7.4.4" x-pid="478" x-info="http://www.rsyslog.com"] exiting
on signal 15.
--
--
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