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[Daniel <1385482@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Hi There

I have the problem that every time when chromium starts, my running me-
tv session freezes.

STEPS TO REPRODUCE

1. everything closed
2. Start me-tv, wait for playback
3. Start chromium
4. me-tv picture freezes and audio playback stops. dmesg prints "tda9887 8-0043: i2c i/o error: rc == -6 (should be 4)"
5. close me-tv while chromium is still running
6. dmesg prints stack trace (see below)
7. Stop me-tv by pressing Ctrl+Q
8. Start me-tv again
9. me-tv works without problems, chromium is still running

LOG MESSAGES

I wasn't ably to find any helpful log messages but these:

dmesg after starting chromium

    [ 7214.127110] tda9887 8-0043: i2c i/o error: rc == -6 (should be 4)

dmesg after quitting chromium

    [ 7236.212694] ------------[ cut here ]------------
    [ 7236.212705] WARNING: CPU: 5 PID: 7784 at /build/buildd/linux-3.13.0/fs/proc/generic.c:511 remove_proc_entry+0x139/0x1b0()
    [ 7236.212707] name 'fs/nfsfs'
    [ 7236.212709] Modules linked in: dm_crypt snd_hrtimer pci_stub vboxpci(OX) vboxnetadp(OX) vboxnetflt(OX) vboxdrv(OX) cuse veth 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 autofs4 bnep deflate ctr twofish_generic twofish_avx_x86_64 twofish_x86_64_3way twofish_x86_64 twofish_common camellia_generic camellia_aesni_avx_x86_64 camellia_x86_64 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 rfcomm bluetooth binfmt_misc nfsd auth_rpcgss nfs_acl nfs lockd sunrpc fscache cx88_blackbird cx2341x cx22702 cx88_dvb cx88_vp3054_i2c videobuf_dvb wm8775 dvb_core tuner_simple tuner_types tda9887 tda8290 tuner cx8800 cx8802 cx88_alsa cx88xx btcx_risc tveeprom videobuf_dma_sg rc_core v4l2_common videobuf_core videodev snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel intel_rapl snd_hda_codec x86_pkg_temp_thermal intel_powerclamp coretemp snd_hwdep kvm_intel snd_pcm kvm snd_page_alloc snd_seq_midi snd_seq_midi_event crct10dif_pclmul crc32_pclmul ghash_clmulni_intel snd_rawmidi aesni_intel aes_x86_64 lrw snd_seq gf128mul glue_helper ablk_helper snd_seq_device cryptd snd_timer snd serio_raw lpc_ich mei_me soundcore mei mac_hid parport_pc ppdev lp parport btrfs xor raid6_pq libcrc32c hid_generic i915 i2c_algo_bit usbhid drm_kms_helper ahci psmouse usb_storage libahci hid drm atl1c video
    [ 7236.212772] CPU: 5 PID: 7784 Comm: kworker/u16:0 Tainted: G        W  OX 3.13.0-37-generic #64-Ubuntu
    [ 7236.212773] Hardware name: Gigabyte Technology Co., Ltd. To be filled by O.E.M./H77-DS3H, BIOS F5 05/14/2012
    [ 7236.212776] Workqueue: netns cleanup_net
    [ 7236.212777]  0000000000000009 ffff8801fca47c80 ffffffff8171ed09 ffff8801fca47cc8
    [ 7236.212779]  ffff8801fca47cb8 ffffffff8106773d 0000000000000000 0000000000000005
    [ 7236.212780]  ffffffffa067c8a8 ffff880216805b30 0000000000000200 ffff8801fca47d18
    [ 7236.212782] Call Trace:
    [ 7236.212785]  [<ffffffff8171ed09>] dump_stack+0x45/0x56
    [ 7236.212787]  [<ffffffff8106773d>] warn_slowpath_common+0x7d/0xa0
    [ 7236.212789]  [<ffffffff810677ac>] warn_slowpath_fmt+0x4c/0x50
    [ 7236.212792]  [<ffffffff81229839>] remove_proc_entry+0x139/0x1b0
    [ 7236.212800]  [<ffffffffa065c4e2>] nfs_fs_proc_net_exit+0x62/0x70 [nfs]
    [ 7236.212805]  [<ffffffffa06625b2>] nfs_net_exit+0x12/0x20 [nfs]
    [ 7236.212807]  [<ffffffff8161b409>] ops_exit_list.isra.1+0x39/0x60
    [ 7236.212808]  [<ffffffff8161bc90>] cleanup_net+0x110/0x250
    [ 7236.212811]  [<ffffffff810839c2>] process_one_work+0x182/0x450
    [ 7236.212812]  [<ffffffff810847b1>] worker_thread+0x121/0x410
    [ 7236.212814]  [<ffffffff81084690>] ? rescuer_thread+0x430/0x430
    [ 7236.212816]  [<ffffffff8108b492>] kthread+0xd2/0xf0
    [ 7236.212817]  [<ffffffff8108b3c0>] ? kthread_create_on_node+0x1c0/0x1c0
    [ 7236.212819]  [<ffffffff8172f77c>] ret_from_fork+0x7c/0xb0
    [ 7236.212820]  [<ffffffff8108b3c0>] ? kthread_create_on_node+0x1c0/0x1c0
    [ 7236.212821] ---[ end trace 91c959672924c77b ]---

RESEARCH

I tried to find information about fs/nfsfs which looks like a file
system driver, but even google didn't find a result for this. I know nfs
(the network protocol) but it is not in use on my system.

FURTHER INFORMATION

- My video card is a Hauppauge HVR-1300. This device already made problems in the past, but these problems were about startup and initializing.
- The only one connection which I see between these two application are audio and probably direct graphics output. For audio I would expect some helpful log messages, but there is not more information than the kernel stack trace and the i2c message.
- I think there is somthing in the initialization sequence of chromium. First I thought it's the pepper flash plugin but I have the same problem when I remove the plugin.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: chromium-browser 37.0.2062.120-0ubuntu0.14.04.1~pkg1049
ProcVersionSignature: Ubuntu 3.13.0-37.64-generic 3.13.11.7
Uname: Linux 3.13.0-37-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.5
Architecture: amd64
CurrentDesktop: XFCE
Date: Fri Oct 24 22:26:17 2014
SourcePackage: chromium-browser
UpgradeStatus: Upgraded to trusty on 2014-04-18 (189 days ago)
modified.conffile..etc.default.chromium.browser: [deleted]
mtime.conffile..etc.chromium.browser.default: 2014-04-12T16:01:25

** Affects: chromium-browser (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug trusty

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https://bugs.launchpad.net/bugs/1385482

Title:
  Starting chromium freezes Me-TV

Status in “chromium-browser” package in Ubuntu:
  New

Bug description:
  Hi There

  I have the problem that every time when chromium starts, my running
  me-tv session freezes.

  STEPS TO REPRODUCE

  1. everything closed
  2. Start me-tv, wait for playback
  3. Start chromium
  4. me-tv picture freezes and audio playback stops. dmesg prints "tda9887 8-0043: i2c i/o error: rc == -6 (should be 4)"
  5. close me-tv while chromium is still running
  6. dmesg prints stack trace (see below)
  7. Stop me-tv by pressing Ctrl+Q
  8. Start me-tv again
  9. me-tv works without problems, chromium is still running

  LOG MESSAGES

  I wasn't ably to find any helpful log messages but these:

  dmesg after starting chromium

      [ 7214.127110] tda9887 8-0043: i2c i/o error: rc == -6 (should be
  4)

  dmesg after quitting chromium

      [ 7236.212694] ------------[ cut here ]------------
      [ 7236.212705] WARNING: CPU: 5 PID: 7784 at /build/buildd/linux-3.13.0/fs/proc/generic.c:511 remove_proc_entry+0x139/0x1b0()
      [ 7236.212707] name 'fs/nfsfs'
      [ 7236.212709] Modules linked in: dm_crypt snd_hrtimer pci_stub vboxpci(OX) vboxnetadp(OX) vboxnetflt(OX) vboxdrv(OX) cuse veth 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 autofs4 bnep deflate ctr twofish_generic twofish_avx_x86_64 twofish_x86_64_3way twofish_x86_64 twofish_common camellia_generic camellia_aesni_avx_x86_64 camellia_x86_64 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 rfcomm bluetooth binfmt_misc nfsd auth_rpcgss nfs_acl nfs lockd sunrpc fscache cx88_blackbird cx2341x cx22702 cx88_dvb cx88_vp3054_i2c videobuf_dvb wm8775 dvb_core tuner_simple tuner_types tda9887 tda8290 tuner cx8800 cx8802 cx88_alsa cx88xx btcx_risc tveeprom videobuf_dma_sg rc_core v4l2_common videobuf_core videodev snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel intel_rapl snd_hda_codec x86_pkg_temp_thermal intel_powerclamp coretemp snd_hwdep kvm_intel snd_pcm kvm snd_page_alloc snd_seq_midi snd_seq_midi_event crct10dif_pclmul crc32_pclmul ghash_clmulni_intel snd_rawmidi aesni_intel aes_x86_64 lrw snd_seq gf128mul glue_helper ablk_helper snd_seq_device cryptd snd_timer snd serio_raw lpc_ich mei_me soundcore mei mac_hid parport_pc ppdev lp parport btrfs xor raid6_pq libcrc32c hid_generic i915 i2c_algo_bit usbhid drm_kms_helper ahci psmouse usb_storage libahci hid drm atl1c video
      [ 7236.212772] CPU: 5 PID: 7784 Comm: kworker/u16:0 Tainted: G        W  OX 3.13.0-37-generic #64-Ubuntu
      [ 7236.212773] Hardware name: Gigabyte Technology Co., Ltd. To be filled by O.E.M./H77-DS3H, BIOS F5 05/14/2012
      [ 7236.212776] Workqueue: netns cleanup_net
      [ 7236.212777]  0000000000000009 ffff8801fca47c80 ffffffff8171ed09 ffff8801fca47cc8
      [ 7236.212779]  ffff8801fca47cb8 ffffffff8106773d 0000000000000000 0000000000000005
      [ 7236.212780]  ffffffffa067c8a8 ffff880216805b30 0000000000000200 ffff8801fca47d18
      [ 7236.212782] Call Trace:
      [ 7236.212785]  [<ffffffff8171ed09>] dump_stack+0x45/0x56
      [ 7236.212787]  [<ffffffff8106773d>] warn_slowpath_common+0x7d/0xa0
      [ 7236.212789]  [<ffffffff810677ac>] warn_slowpath_fmt+0x4c/0x50
      [ 7236.212792]  [<ffffffff81229839>] remove_proc_entry+0x139/0x1b0
      [ 7236.212800]  [<ffffffffa065c4e2>] nfs_fs_proc_net_exit+0x62/0x70 [nfs]
      [ 7236.212805]  [<ffffffffa06625b2>] nfs_net_exit+0x12/0x20 [nfs]
      [ 7236.212807]  [<ffffffff8161b409>] ops_exit_list.isra.1+0x39/0x60
      [ 7236.212808]  [<ffffffff8161bc90>] cleanup_net+0x110/0x250
      [ 7236.212811]  [<ffffffff810839c2>] process_one_work+0x182/0x450
      [ 7236.212812]  [<ffffffff810847b1>] worker_thread+0x121/0x410
      [ 7236.212814]  [<ffffffff81084690>] ? rescuer_thread+0x430/0x430
      [ 7236.212816]  [<ffffffff8108b492>] kthread+0xd2/0xf0
      [ 7236.212817]  [<ffffffff8108b3c0>] ? kthread_create_on_node+0x1c0/0x1c0
      [ 7236.212819]  [<ffffffff8172f77c>] ret_from_fork+0x7c/0xb0
      [ 7236.212820]  [<ffffffff8108b3c0>] ? kthread_create_on_node+0x1c0/0x1c0
      [ 7236.212821] ---[ end trace 91c959672924c77b ]---

  RESEARCH

  I tried to find information about fs/nfsfs which looks like a file
  system driver, but even google didn't find a result for this. I know
  nfs (the network protocol) but it is not in use on my system.

  FURTHER INFORMATION

  - My video card is a Hauppauge HVR-1300. This device already made problems in the past, but these problems were about startup and initializing.
  - The only one connection which I see between these two application are audio and probably direct graphics output. For audio I would expect some helpful log messages, but there is not more information than the kernel stack trace and the i2c message.
  - I think there is somthing in the initialization sequence of chromium. First I thought it's the pepper flash plugin but I have the same problem when I remove the plugin.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: chromium-browser 37.0.2062.120-0ubuntu0.14.04.1~pkg1049
  ProcVersionSignature: Ubuntu 3.13.0-37.64-generic 3.13.11.7
  Uname: Linux 3.13.0-37-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.5
  Architecture: amd64
  CurrentDesktop: XFCE
  Date: Fri Oct 24 22:26:17 2014
  SourcePackage: chromium-browser
  UpgradeStatus: Upgraded to trusty on 2014-04-18 (189 days ago)
  modified.conffile..etc.default.chromium.browser: [deleted]
  mtime.conffile..etc.chromium.browser.default: 2014-04-12T16:01:25

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