kernel-packages team mailing list archive

["Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>]

PascalC, could you please test the latest upstream kernel available from
the very top line at the top of the page (the release names are
irrelevant for testing, and please do not test the daily folder)
following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow
additional upstream developers to examine the issue.

If the test did not allow you to test to the issue (ex. you couldn't boot into the OS) please make a comment in your report about this, and continue to test the next most recent kernel version until you can test to the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags:
kernel-fixed-upstream
kernel-fixed-upstream-VERSION-NUMBER

where VERSION-NUMBER is the version number of the kernel you tested exactly shown as:
kernel-fixed-upstream-3.19-rc2

This can be done by clicking on the yellow circle with a black pencil
icon next to the word Tags located at the bottom of the bug description.

If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-VERSION-NUMBER

Once testing of the upstream kernel is complete, please mark this bug's
Status as Confirmed. Please let us know your results. Thank you for your
understanding.

** Changed in: linux (Ubuntu)
   Importance: Low => Medium

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

-- 
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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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