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[Joseph Salisbury <joseph.salisbury@xxxxxxxxxxxxx>]

** Changed in: linux (Ubuntu)
       Status: Confirmed => Incomplete

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https://bugs.launchpad.net/bugs/1326300

Title:
  Logitech QuickCam 4000 Pro causes kernel oops when video switched off

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  To reproduce:

  1) Plug in Logitech QuickCam 4000 Pro via USB
  2) Run 'mplayer -tv device=/dev/video1 tv://'
  3) Quit mplayer
  4) Run, 'dmesg|grep -q 'Call Trace:' && echo found bug'
  5) Observe that 'found bug' is displayed.

  [ 9477.565079] usb 2-1: new full-speed USB device number 10 using xhci_hcd
  [ 9477.820828] usb 2-1: New USB device found, idVendor=046d, idProduct=08b2
  [ 9477.820835] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
  [ 9477.821394] usb 2-1: ep 0x82 - rounding interval to 512 microframes, ep desc says 800 microframes
  [ 9477.839316] pwc: Logitech QuickCam 4000 Pro USB webcam detected.
  [ 9478.277667] pwc: Registered as video1.
  [ 9478.277850] input: PWC snapshot button as /devices/pci0000:00/0000:00:14.0/usb2/2-1/input/input17
  [ 9478.278188] usbcore: registered new interface driver Philips webcam
  [ 9478.317402] usbcore: registered new interface driver snd-usb-audio
  [ 9484.954720] usb 2-1: ep 0x82 - rounding interval to 512 microframes, ep desc says 800 microframes
  [ 9665.533822] usb 2-1: USB disconnect, device number 10
  [ 9677.033044] usb 2-3: new full-speed USB device number 11 using xhci_hcd
  [ 9679.218500] usb 2-3: New USB device found, idVendor=046d, idProduct=08b2
  [ 9679.218512] usb 2-3: New USB device strings: Mfr=0, Product=0, SerialNumber=0
  [ 9679.218820] usb 2-3: ep 0x82 - rounding interval to 512 microframes, ep desc says 800 microframes
  [ 9679.220197] pwc: Logitech QuickCam 4000 Pro USB webcam detected.
  [ 9679.674614] pwc: Registered as video2.
  [ 9679.674713] input: PWC snapshot button as /devices/pci0000:00/0000:00:14.0/usb2/2-3/input/input18
  [ 9681.296102] ------------[ cut here ]------------
  [ 9681.296132] WARNING: CPU: 0 PID: 6039 at /build/buildd/linux-3.15.0/drivers/media/v4l2-core/videobuf2-core.c:2011 __vb2_queue_cancel+0x116/0x180 [videobuf2_core]()
  [ 9681.296135] Modules linked in: snd_usb_audio snd_usbmidi_lib pwc v4l2_common veth ccm overlayfs xt_CHECKSUM iptable_mangle ipt_MASQUERADE iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack xt_tcpudp bridge stp llc iptable_filter ip_tables x_tables deflate ctr twofish_generic twofish_avx_x86_64 twofish_x86_64_3way twofish_x86_64 twofish_common camellia_generic camellia_aesni_avx2 camellia_aesni_avx_x86_64 camellia_x86_64 serpent_avx2 serpent_avx_x86_64 serpent_sse2_x86_64 xts serpent_generic blowfish_generic blowfish_x86_64 blowfish_common cast5_avx_x86_64 cast5_generic cast_common des_generic cmac xcbc rmd160 crypto_null af_key xfrm_algo arc4 snd_hda_codec_hdmi snd_hda_codec_realtek intel_rapl snd_hda_codec_generic x86_pkg_temp_thermal intel_powerclamp coretemp thinkpad_acpi kvm_intel nvram snd_hda_intel iwlmvm snd_hda_controller kvm snd_hda_codec uvcvideo mac80211 snd_hwdep videobuf2_vmalloc videobuf2_memops snd_pcm videobuf2_core snd_seq_midi snd_seq_midi_event microcode snd_rawmidi videodev snd_seq snd_seq_device iwlwifi joydev snd_timer serio_raw btusb rtsx_pci_ms bluetooth memstick 6lowpan_iphc cfg80211 snd mei_me mei mac_hid shpchp intel_smartconnect lpc_ich soundcore cuse parport_pc ppdev lp binfmt_misc parport nls_iso8859_1 uas usb_storage hid_generic usbhid hid dm_crypt mmc_block rtsx_pci_sdmmc crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd psmouse i915 ahci e1000e libahci rtsx_pci ptp pps_core wmi i2c_algo_bit drm_kms_helper drm video
  [ 9681.296240] CPU: 0 PID: 6039 Comm: mplayer Not tainted 3.15.0-5-generic #10-Ubuntu
  [ 9681.296243] Hardware name: LENOVO 20AQCTO1WW/20AQCTO1WW, BIOS GJET71WW (2.21 ) 02/10/2014
  [ 9681.296245]  0000000000000009 ffff88028db5fdb0 ffffffff81733bb4 0000000000000000
  [ 9681.296249]  ffff88028db5fde8 ffffffff81066a6d 0000000000000000 ffff8801dc2b0670
  [ 9681.296252]  ffff8803097f7a18 ffff8801dc2b0420 ffff88007a0f9780 ffff88028db5fdf8
  [ 9681.296256] Call Trace:
  [ 9681.296266]  [<ffffffff81733bb4>] dump_stack+0x45/0x56
  [ 9681.296273]  [<ffffffff81066a6d>] warn_slowpath_common+0x7d/0xa0
  [ 9681.296277]  [<ffffffff81066b4a>] warn_slowpath_null+0x1a/0x20
  [ 9681.296285]  [<ffffffffa04d74b6>] __vb2_queue_cancel+0x116/0x180 [videobuf2_core]
  [ 9681.296293]  [<ffffffffa04d9c9a>] vb2_queue_release+0x1a/0x30 [videobuf2_core]
  [ 9681.296301]  [<ffffffffa04d9d11>] _vb2_fop_release+0x61/0xa0 [videobuf2_core]
  [ 9681.296308]  [<ffffffffa04d9d7a>] vb2_fop_release+0x2a/0x50 [videobuf2_core]
  [ 9681.296320]  [<ffffffffa04ab434>] v4l2_release+0x34/0x80 [videodev]
  [ 9681.296326]  [<ffffffff811c4114>] __fput+0xe4/0x220
  [ 9681.296331]  [<ffffffff811c429e>] ____fput+0xe/0x10
  [ 9681.296335]  [<ffffffff81086f37>] task_work_run+0xa7/0xe0
  [ 9681.296342]  [<ffffffff81012db7>] do_notify_resume+0x97/0xb0
  [ 9681.296349]  [<ffffffff81744f6a>] int_signal+0x12/0x17
  [ 9681.296352] ---[ end trace 06de6c117115a86a ]---
  [ 9681.296354] ------------[ cut here ]------------
  [ 9681.296360] WARNING: CPU: 0 PID: 6039 at /build/buildd/linux-3.15.0/drivers/media/v4l2-core/videobuf2-core.c:1095 vb2_buffer_done+0x18d/0x1a0 [videobuf2_core]()
  [ 9681.296362] Modules linked in: snd_usb_audio snd_usbmidi_lib pwc v4l2_common veth ccm overlayfs xt_CHECKSUM iptable_mangle ipt_MASQUERADE iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack xt_tcpudp bridge stp llc iptable_filter ip_tables x_tables deflate ctr twofish_generic twofish_avx_x86_64 twofish_x86_64_3way twofish_x86_64 twofish_common camellia_generic camellia_aesni_avx2 camellia_aesni_avx_x86_64 camellia_x86_64 serpent_avx2 serpent_avx_x86_64 serpent_sse2_x86_64 xts serpent_generic blowfish_generic blowfish_x86_64 blowfish_common cast5_avx_x86_64 cast5_generic cast_common des_generic cmac xcbc rmd160 crypto_null af_key xfrm_algo arc4 snd_hda_codec_hdmi snd_hda_codec_realtek intel_rapl snd_hda_codec_generic x86_pkg_temp_thermal intel_powerclamp coretemp thinkpad_acpi kvm_intel nvram snd_hda_intel iwlmvm snd_hda_controller kvm snd_hda_codec uvcvideo mac80211 snd_hwdep videobuf2_vmalloc videobuf2_memops snd_pcm videobuf2_core snd_seq_midi snd_seq_midi_event microcode snd_rawmidi videodev snd_seq snd_seq_device iwlwifi joydev snd_timer serio_raw btusb rtsx_pci_ms bluetooth memstick 6lowpan_iphc cfg80211 snd mei_me mei mac_hid shpchp intel_smartconnect lpc_ich soundcore cuse parport_pc ppdev lp binfmt_misc parport nls_iso8859_1 uas usb_storage hid_generic usbhid hid dm_crypt mmc_block rtsx_pci_sdmmc crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd psmouse i915 ahci e1000e libahci rtsx_pci ptp pps_core wmi i2c_algo_bit drm_kms_helper drm video

  Problem is repeatable.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: linux-image-generic 3.15.0.5.6
  ProcVersionSignature: Ubuntu 3.15.0-5.10-generic 3.15.0-rc8
  Uname: Linux 3.15.0-5-generic x86_64
  ApportVersion: 2.14.3-0ubuntu1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC2:  james      3036 F.... pulseaudio
   /dev/snd/controlC0:  james      3036 F.... pulseaudio
   /dev/snd/pcmC1D0p:   james      3036 F...m pulseaudio
   /dev/snd/controlC1:  james      3036 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Wed Jun  4 10:03:07 2014
  HibernationDevice: RESUME=UUID=db600bbe-faca-41f4-9338-c3e8e227599a
  InstallationDate: Installed on 2014-04-11 (53 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Daily amd64 (20140409)
  MachineType: LENOVO 20AQCTO1WW
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.15.0-5-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.15.0-5-generic N/A
   linux-backports-modules-3.15.0-5-generic  N/A
   linux-firmware                            1.130
  SourcePackage: linux
  UpgradeStatus: Upgraded to utopic on 2014-05-08 (26 days ago)
  dmi.bios.date: 02/10/2014
  dmi.bios.vendor: LENOVO
  dmi.bios.version: GJET71WW (2.21 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20AQCTO1WW
  dmi.board.vendor: LENOVO
  dmi.board.version: 0B98405 STD
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvrGJET71WW(2.21):bd02/10/2014:svnLENOVO:pn20AQCTO1WW:pvrThinkPadT440s:rvnLENOVO:rn20AQCTO1WW:rvr0B98405STD:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 20AQCTO1WW
  dmi.product.version: ThinkPad T440s
  dmi.sys.vendor: LENOVO

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