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[Bug 1388239] Re: CPU: 1 PID: 11025 at /build/buildd/linux-3.16.0/drivers/media/v4l2-core/videobuf2-core.c:2120 __vb2_queue_cancel+0x116/0x180 [videobuf2_core]()

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Nothing to do with userspace. v4l-utils -> Invalid

** Changed in: v4l-utils (Ubuntu)
       Status: New => Invalid

** Attachment removed: "CurrentDmesg.txt.txt"
   https://bugs.launchpad.net/ubuntu/+source/v4l-utils/+bug/1388239/+attachment/4250285/+files/CurrentDmesg.txt.txt

** Attachment removed: "Dependencies.txt"
   https://bugs.launchpad.net/ubuntu/+source/v4l-utils/+bug/1388239/+attachment/4250286/+files/Dependencies.txt

** Attachment removed: "ProcEnviron.txt"
   https://bugs.launchpad.net/ubuntu/+source/v4l-utils/+bug/1388239/+attachment/4250287/+files/ProcEnviron.txt

** Attachment removed: "VarLogDistupgradeAptHistorylog.txt"
   https://bugs.launchpad.net/ubuntu/+source/v4l-utils/+bug/1388239/+attachment/4250288/+files/VarLogDistupgradeAptHistorylog.txt

** Attachment removed: "VarLogDistupgradeAptclonesystemstate.tar.gz"
   https://bugs.launchpad.net/ubuntu/+source/v4l-utils/+bug/1388239/+attachment/4250289/+files/VarLogDistupgradeAptclonesystemstate.tar.gz

** Attachment removed: "VarLogDistupgradeAptlog.txt"
   https://bugs.launchpad.net/ubuntu/+source/v4l-utils/+bug/1388239/+attachment/4250290/+files/VarLogDistupgradeAptlog.txt

** Attachment removed: "VarLogDistupgradeApttermlog.txt"
   https://bugs.launchpad.net/ubuntu/+source/v4l-utils/+bug/1388239/+attachment/4250291/+files/VarLogDistupgradeApttermlog.txt

** Attachment removed: "VarLogDistupgradeLspcitxt.txt"
   https://bugs.launchpad.net/ubuntu/+source/v4l-utils/+bug/1388239/+attachment/4250292/+files/VarLogDistupgradeLspcitxt.txt

** Attachment removed: "VarLogDistupgradeMainlog.txt"
   https://bugs.launchpad.net/ubuntu/+source/v4l-utils/+bug/1388239/+attachment/4250293/+files/VarLogDistupgradeMainlog.txt

** Description changed:

  Found theses warnings when using the webcam on flash site under firefox.
- 
  
  [418114.773634] ------------[ cut here ]------------
  [418114.773674] WARNING: CPU: 1 PID: 11025 at /build/buildd/linux-3.16.0/drivers/media/v4l2-core/videobuf2-core.c:2120 __vb2_queue_cancel+0x116/0x180 [videobuf2_core]()
  [418114.773677] Modules linked in: btrfs xor raid6_pq ufs qnx4 hfsplus hfs minix ntfs msdos jfs xfs libcrc32c xt_CHECKSUM iptable_mangle ipt_MASQUERADE iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT xt_tcpudp iptable_filter ip_tables x_tables bridge stp llc snd_hrtimer nfsv3 rpcsec_gss_krb5 nfsv4 ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core ib_addr bnep iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi rfcomm bluetooth 6lowpan_iphc nfsd auth_rpcgss binfmt_misc nfs_acl nfs lockd sunrpc fscache dm_crypt ir_lirc_codec lirc_dev ir_rc5_decoder ir_mce_kbd_decoder ir_sharp_decoder ir_jvc_decoder ir_sony_decoder ir_sanyo_decoder ir_rc6_decoder ir_nec_decoder rc_rc6_mce mceusb rc_core pl2303 usbserial snd_hda_codec_realtek uvcvideo videobuf2_vmalloc
  [418114.773763]  videobuf2_memops snd_hda_codec_generic snd_usb_audio videobuf2_core v4l2_common snd_hda_intel videodev snd_hda_controller media joydev snd_usbmidi_lib snd_hda_codec snd_hwdep coretemp snd_pcm kvm_intel snd_seq_midi dm_multipath kvm snd_seq_midi_event scsi_dh snd_rawmidi snd_seq snd_seq_device serio_raw snd_timer cuse snd lpc_ich parport_pc soundcore ppdev mac_hid lp parport i915 hid_generic e1000e ptp video i2c_algo_bit drm_kms_helper usbhid drm firewire_ohci hid pata_acpi firewire_core crc_itu_t pps_core
  [418114.773829] CPU: 1 PID: 11025 Comm: plugin-containe Tainted: G        W     3.16.0-23-lowlatency #31-Ubuntu
  [418114.773833] Hardware name: AOpen i965GMx-IF/i965GMx-IF, BIOS 6.00 PG 10/03/2008
  [418114.773836]  0000000000000009 ffff8800115c7c00 ffffffff8177ec5d 0000000000000000
  [418114.773843]  ffff8800115c7c38 ffffffff8107183d 0000000000000000 0000000000000000
  [418114.773848]  ffff88008b044af0 ffff88008b0448d8 ffff8801215cb180 ffff8800115c7c48
  [418114.773854] Call Trace:
  [418114.773867]  [<ffffffff8177ec5d>] dump_stack+0x4d/0x6f
  [418114.773875]  [<ffffffff8107183d>] warn_slowpath_common+0x7d/0xa0
  [418114.773881]  [<ffffffff8107191a>] warn_slowpath_null+0x1a/0x20
  [418114.773893]  [<ffffffffc0701596>] __vb2_queue_cancel+0x116/0x180 [videobuf2_core]
  [418114.773905]  [<ffffffffc0702cf5>] vb2_internal_streamoff+0x35/0x90 [videobuf2_core]
  [418114.773916]  [<ffffffffc0702db5>] vb2_streamoff+0x65/0x70 [videobuf2_core]
  [418114.773928]  [<ffffffffc075e855>] uvc_queue_enable+0x65/0xa0 [uvcvideo]
  [418114.773939]  [<ffffffffc076360a>] uvc_video_enable+0x4a/0x1b0 [uvcvideo]
  [418114.773958]  [<ffffffffc07601e2>] uvc_v4l2_do_ioctl+0x962/0x14b0 [uvcvideo]
  [418114.773962]  [<ffffffff81192373>] ? copy_page_from_iter_iovec+0x183/0x2d0
  [418114.773976]  [<ffffffffc06e02c6>] video_usercopy+0x366/0x600 [videodev]
  [418114.773979]  [<ffffffff811e4bd9>] ? __sb_start_write+0x49/0xf0
  [418114.773985]  [<ffffffffc075f880>] ? uvc_v4l2_open+0x150/0x150 [uvcvideo]
  [418114.773988]  [<ffffffff811e4b61>] ? __sb_end_write+0x31/0x60
  [418114.773992]  [<ffffffff811eaad3>] ? pipe_write+0x393/0x450
  [418114.773997]  [<ffffffffc075ec3f>] uvc_v4l2_ioctl+0x2f/0x70 [uvcvideo]
  [418114.774004]  [<ffffffffc06da734>] v4l2_ioctl+0x154/0x190 [videodev]
  [418114.774008]  [<ffffffff811f6468>] do_vfs_ioctl+0x2c8/0x4a0
  [418114.774011]  [<ffffffff812007de>] ? __fget+0x6e/0xb0
  [418114.774029]  [<ffffffff811f66c1>] SyS_ioctl+0x81/0xa0
  [418114.774039]  [<ffffffff8178666d>] system_call_fastpath+0x1a/0x1f
  [418114.774084] ---[ end trace 36d13fa659268ece ]---
  
- ProblemType: Bug
- DistroRelease: Ubuntu 14.10
- Package: ubuntu-release-upgrader-core 1:14.10.9
- ProcVersionSignature: Ubuntu 3.16.0-23.31-lowlatency 3.16.4
- Uname: Linux 3.16.0-23-lowlatency x86_64
- ApportVersion: 2.14.7-0ubuntu8
- Architecture: amd64
- CrashDB: ubuntu
- CurrentDesktop: KDE
- Date: Fri Oct 31 20:35:55 2014
- InstallationDate: Installed on 2011-10-23 (1103 days ago)
- InstallationMedia: Kubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
- PackageArchitecture: all
- SourcePackage: ubuntu-release-upgrader
- Symptom: ubuntu-release-upgrader
- UpgradeStatus: Upgraded to utopic on 2014-10-24 (7 days ago)
- --- 
+ ---
  ApportVersion: 2.14.7-0ubuntu8
  Architecture: amd64
  AudioDevicesInUse:
-  USER        PID ACCESS COMMAND
-  /dev/snd/controlC1:  pascal     3770 F.... pulseaudio
-  /dev/snd/pcmC0D0p:   pascal     3770 F...m pulseaudio
-  /dev/snd/controlC0:  pascal     3770 F.... pulseaudio
+  USER        PID ACCESS COMMAND
+  /dev/snd/controlC1:  pascal     3770 F.... pulseaudio
+  /dev/snd/pcmC0D0p:   pascal     3770 F...m pulseaudio
+  /dev/snd/controlC0:  pascal     3770 F.... pulseaudio
  CurrentDesktop: KDE
  DistroRelease: Ubuntu 14.10
  HibernationDevice: RESUME=UUID=6e95fe83-ffc6-4f37-b81c-984d3bf3dc85
  InstallationDate: Installed on 2011-10-23 (1125 days ago)
  InstallationMedia: Kubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
  IwConfig:
-  eth0      no wireless extensions.
-  
-  virbr0    no wireless extensions.
-  
-  lo        no wireless extensions.
+  eth0      no wireless extensions.
+ 
+  virbr0    no wireless extensions.
+ 
+  lo        no wireless extensions.
  MachineType: AOpen i965GMx-IF
  Package: linux (not installed)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-24-lowlatency root=UUID=6326dfb7-36be-4eae-85b8-e49695f3f331 ro security=selinux selinux=1
  ProcVersionSignature: Ubuntu 3.16.0-24.32-lowlatency 3.16.4
  RelatedPackageVersions:
-  linux-restricted-modules-3.16.0-24-lowlatency N/A
-  linux-backports-modules-3.16.0-24-lowlatency  N/A
-  linux-firmware                                1.138
+  linux-restricted-modules-3.16.0-24-lowlatency N/A
+  linux-backports-modules-3.16.0-24-lowlatency  N/A
+  linux-firmware                                1.138
  RfKill:
-  
+ 
  Tags:  utopic
  Uname: Linux 3.16.0-24-lowlatency x86_64
  UpgradeStatus: Upgraded to utopic on 2014-10-24 (28 days ago)
  UserGroups: adm admin cdrom dialout disk fuse kvm libvirtd lpadmin plugdev
  _MarkForUpload: True
  dmi.bios.date: 10/03/2008
  dmi.bios.vendor: Phoenix Technologies, LTD
  dmi.bios.version: 6.00 PG
  dmi.board.name: i965GMx-IF
  dmi.board.vendor: AOpen
  dmi.board.version: 558EX10I690
  dmi.chassis.type: 3
  dmi.chassis.vendor: AOpen
  dmi.chassis.version: i965GMx-IF
  dmi.modalias: dmi:bvnPhoenixTechnologies,LTD:bvr6.00PG:bd10/03/2008:svnAOpen:pni965GMx-IF:pvrAO00001JW:rvnAOpen:rni965GMx-IF:rvr558EX10I690:cvnAOpen:ct3:cvri965GMx-IF:
  dmi.product.name: i965GMx-IF
  dmi.product.version: AO00001JW
  dmi.sys.vendor: AOpen

-- 
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https://bugs.launchpad.net/bugs/1388239

Title:
  CPU: 1 PID: 11025 at
  /build/buildd/linux-3.16.0/drivers/media/v4l2-core/videobuf2-core.c:2120
  __vb2_queue_cancel+0x116/0x180 [videobuf2_core]()

Status in linux package in Ubuntu:
  Incomplete
Status in v4l-utils package in Ubuntu:
  Invalid

Bug description:
  Found theses warnings when using the webcam on flash site under
  firefox.

  [418114.773634] ------------[ cut here ]------------
  [418114.773674] WARNING: CPU: 1 PID: 11025 at /build/buildd/linux-3.16.0/drivers/media/v4l2-core/videobuf2-core.c:2120 __vb2_queue_cancel+0x116/0x180 [videobuf2_core]()
  [418114.773677] Modules linked in: btrfs xor raid6_pq ufs qnx4 hfsplus hfs minix ntfs msdos jfs xfs libcrc32c xt_CHECKSUM iptable_mangle ipt_MASQUERADE iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT xt_tcpudp iptable_filter ip_tables x_tables bridge stp llc snd_hrtimer nfsv3 rpcsec_gss_krb5 nfsv4 ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core ib_addr bnep iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi rfcomm bluetooth 6lowpan_iphc nfsd auth_rpcgss binfmt_misc nfs_acl nfs lockd sunrpc fscache dm_crypt ir_lirc_codec lirc_dev ir_rc5_decoder ir_mce_kbd_decoder ir_sharp_decoder ir_jvc_decoder ir_sony_decoder ir_sanyo_decoder ir_rc6_decoder ir_nec_decoder rc_rc6_mce mceusb rc_core pl2303 usbserial snd_hda_codec_realtek uvcvideo videobuf2_vmalloc
  [418114.773763]  videobuf2_memops snd_hda_codec_generic snd_usb_audio videobuf2_core v4l2_common snd_hda_intel videodev snd_hda_controller media joydev snd_usbmidi_lib snd_hda_codec snd_hwdep coretemp snd_pcm kvm_intel snd_seq_midi dm_multipath kvm snd_seq_midi_event scsi_dh snd_rawmidi snd_seq snd_seq_device serio_raw snd_timer cuse snd lpc_ich parport_pc soundcore ppdev mac_hid lp parport i915 hid_generic e1000e ptp video i2c_algo_bit drm_kms_helper usbhid drm firewire_ohci hid pata_acpi firewire_core crc_itu_t pps_core
  [418114.773829] CPU: 1 PID: 11025 Comm: plugin-containe Tainted: G        W     3.16.0-23-lowlatency #31-Ubuntu
  [418114.773833] Hardware name: AOpen i965GMx-IF/i965GMx-IF, BIOS 6.00 PG 10/03/2008
  [418114.773836]  0000000000000009 ffff8800115c7c00 ffffffff8177ec5d 0000000000000000
  [418114.773843]  ffff8800115c7c38 ffffffff8107183d 0000000000000000 0000000000000000
  [418114.773848]  ffff88008b044af0 ffff88008b0448d8 ffff8801215cb180 ffff8800115c7c48
  [418114.773854] Call Trace:
  [418114.773867]  [<ffffffff8177ec5d>] dump_stack+0x4d/0x6f
  [418114.773875]  [<ffffffff8107183d>] warn_slowpath_common+0x7d/0xa0
  [418114.773881]  [<ffffffff8107191a>] warn_slowpath_null+0x1a/0x20
  [418114.773893]  [<ffffffffc0701596>] __vb2_queue_cancel+0x116/0x180 [videobuf2_core]
  [418114.773905]  [<ffffffffc0702cf5>] vb2_internal_streamoff+0x35/0x90 [videobuf2_core]
  [418114.773916]  [<ffffffffc0702db5>] vb2_streamoff+0x65/0x70 [videobuf2_core]
  [418114.773928]  [<ffffffffc075e855>] uvc_queue_enable+0x65/0xa0 [uvcvideo]
  [418114.773939]  [<ffffffffc076360a>] uvc_video_enable+0x4a/0x1b0 [uvcvideo]
  [418114.773958]  [<ffffffffc07601e2>] uvc_v4l2_do_ioctl+0x962/0x14b0 [uvcvideo]
  [418114.773962]  [<ffffffff81192373>] ? copy_page_from_iter_iovec+0x183/0x2d0
  [418114.773976]  [<ffffffffc06e02c6>] video_usercopy+0x366/0x600 [videodev]
  [418114.773979]  [<ffffffff811e4bd9>] ? __sb_start_write+0x49/0xf0
  [418114.773985]  [<ffffffffc075f880>] ? uvc_v4l2_open+0x150/0x150 [uvcvideo]
  [418114.773988]  [<ffffffff811e4b61>] ? __sb_end_write+0x31/0x60
  [418114.773992]  [<ffffffff811eaad3>] ? pipe_write+0x393/0x450
  [418114.773997]  [<ffffffffc075ec3f>] uvc_v4l2_ioctl+0x2f/0x70 [uvcvideo]
  [418114.774004]  [<ffffffffc06da734>] v4l2_ioctl+0x154/0x190 [videodev]
  [418114.774008]  [<ffffffff811f6468>] do_vfs_ioctl+0x2c8/0x4a0
  [418114.774011]  [<ffffffff812007de>] ? __fget+0x6e/0xb0
  [418114.774029]  [<ffffffff811f66c1>] SyS_ioctl+0x81/0xa0
  [418114.774039]  [<ffffffff8178666d>] system_call_fastpath+0x1a/0x1f
  [418114.774084] ---[ end trace 36d13fa659268ece ]---

  ---
  ApportVersion: 2.14.7-0ubuntu8
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  pascal     3770 F.... pulseaudio
   /dev/snd/pcmC0D0p:   pascal     3770 F...m pulseaudio
   /dev/snd/controlC0:  pascal     3770 F.... pulseaudio
  CurrentDesktop: KDE
  DistroRelease: Ubuntu 14.10
  HibernationDevice: RESUME=UUID=6e95fe83-ffc6-4f37-b81c-984d3bf3dc85
  InstallationDate: Installed on 2011-10-23 (1125 days ago)
  InstallationMedia: Kubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
  IwConfig:
   eth0      no wireless extensions.

   virbr0    no wireless extensions.

   lo        no wireless extensions.
  MachineType: AOpen i965GMx-IF
  Package: linux (not installed)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-24-lowlatency root=UUID=6326dfb7-36be-4eae-85b8-e49695f3f331 ro security=selinux selinux=1
  ProcVersionSignature: Ubuntu 3.16.0-24.32-lowlatency 3.16.4
  RelatedPackageVersions:
   linux-restricted-modules-3.16.0-24-lowlatency N/A
   linux-backports-modules-3.16.0-24-lowlatency  N/A
   linux-firmware                                1.138
  RfKill:

  Tags:  utopic
  Uname: Linux 3.16.0-24-lowlatency x86_64
  UpgradeStatus: Upgraded to utopic on 2014-10-24 (28 days ago)
  UserGroups: adm admin cdrom dialout disk fuse kvm libvirtd lpadmin plugdev
  _MarkForUpload: True
  dmi.bios.date: 10/03/2008
  dmi.bios.vendor: Phoenix Technologies, LTD
  dmi.bios.version: 6.00 PG
  dmi.board.name: i965GMx-IF
  dmi.board.vendor: AOpen
  dmi.board.version: 558EX10I690
  dmi.chassis.type: 3
  dmi.chassis.vendor: AOpen
  dmi.chassis.version: i965GMx-IF
  dmi.modalias: dmi:bvnPhoenixTechnologies,LTD:bvr6.00PG:bd10/03/2008:svnAOpen:pni965GMx-IF:pvrAO00001JW:rvnAOpen:rni965GMx-IF:rvr558EX10I690:cvnAOpen:ct3:cvri965GMx-IF:
  dmi.product.name: i965GMx-IF
  dmi.product.version: AO00001JW
  dmi.sys.vendor: AOpen

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