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[Launchpad Bug Tracker <1402409@xxxxxxxxxxxxxxxxxx>]

[Expired for bcmwl (Ubuntu) because there has been no activity for 60
days.]

** Changed in: bcmwl (Ubuntu)
       Status: Incomplete => Expired

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https://bugs.launchpad.net/bugs/1402409

Title:
  14e4:43a0 [MacBookAir6,2] wireless unable to connect after tainted
  kworker

Status in bcmwl package in Ubuntu:
  Expired

Bug description:
  At some point sooner or later in any session the wireless is no longer able to connect to the network.
  I've included at the end the output of dmesg.
  I'm not sure if this is a bug in the kernel or in a module.

  This is my card:
  03:00.0 Network controller: Broadcom Corporation BCM4360 802.11ac Wireless Network Adapter (rev 03)

  Features of this bug:
    - reloading the wl and cfg80211 modules does not fix the problem.
    - when this happens I can not use my USB netgear WG111v2 (which works before it happens).
    - other machines on the same network stay connected no problem, including a different machine with a broadcom chip (BCM5906M Fast Ethernet PCI Express (rev 02)).

  I'm sorry that I can't give more information...
    please let me know if I can.

  
  [ 5091.442404] ERROR @wl_inform_single_bss : cfg80211_inform_bss_frame error
  [ 5091.449431] cfg80211: Calling CRDA to update world regulatory domain
  [ 5091.471386] cfg80211: World regulatory domain updated:
  [ 5091.471390] cfg80211:  DFS Master region: unset
  [ 5091.471392] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
  [ 5091.471395] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)
  [ 5091.471397] cfg80211:   (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)
  [ 5091.471399] cfg80211:   (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm), (N/A)
  [ 5091.471400] cfg80211:   (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)
  [ 5091.471402] cfg80211:   (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)
  [ 5091.534260] ------------[ cut here ]------------
  [ 5091.534296] WARNING: CPU: 3 PID: 8088 at /build/buildd/linux-3.16.0/net/wireless/sme.c:655 __cfg80211_connect_result+0x3f1/0x470 [cfg80211]()
  [ 5091.534299] Modules linked in: btusb rfcomm bnep bluetooth 6lowpan_iphc snd_hda_codec_cirrus snd_hda_codec_generic snd_hda_codec_hdmi binfmt_misc nls_iso8859_1 wl(POE) applesmc input_polldev intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel bcm5974 kvm joydev crct10dif_pclmul snd_hda_intel snd_hda_controller crc32_pclmul ghash_clmulni_intel snd_hda_codec snd_hwdep snd_seq_midi snd_pcm snd_seq_midi_event snd_rawmidi nls_utf8 hfsplus aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd cfg80211 lpc_ich snd_seq snd_seq_device i915 snd_timer snd drm_kms_helper mei_me mei drm shpchp i2c_algo_bit soundcore sbs sbshc spi_pxa2xx_platform apple_bl mac_hid parport_pc ppdev mba6x_bl(OE) video lp parport hid_generic hid_apple usbhid hid uas ahci usb_storage libahci
  [ 5091.534362] CPU: 3 PID: 8088 Comm: kworker/u16:0 Tainted: P           OE 3.16.0-28-generic #37-Ubuntu
  [ 5091.534365] Hardware name: Apple Inc. MacBookAir6,2/Mac-7DF21CB3ED6977E5, BIOS MBA61.88Z.0099.B04.1309271229 09/27/2013
  [ 5091.534375] Workqueue: cfg80211 cfg80211_event_work [cfg80211]
  [ 5091.534378]  0000000000000009 ffff88021fde3c90 ffffffff82781e6a 0000000000000000
  [ 5091.534382]  ffff88021fde3cc8 ffffffff8206fedd ffff880262a13400 0000000000000000
  [ 5091.534386]  0000000000000000 ffff8800867ec000 ffff88023075f618 ffff88021fde3cd8
  [ 5091.534391] Call Trace:
  [ 5091.534399]  [<ffffffff82781e6a>] dump_stack+0x45/0x56
  [ 5091.534405]  [<ffffffff8206fedd>] warn_slowpath_common+0x7d/0xa0
  [ 5091.534410]  [<ffffffff8206ffba>] warn_slowpath_null+0x1a/0x20
  [ 5091.534425]  [<ffffffffc0572681>] __cfg80211_connect_result+0x3f1/0x470 [cfg80211]
  [ 5091.534430]  [<ffffffff8201c929>] ? sched_clock+0x9/0x10
  [ 5091.534443]  [<ffffffffc054f023>] cfg80211_process_wdev_events+0x153/0x1e0 [cfg80211]
  [ 5091.534455]  [<ffffffffc054f0e8>] cfg80211_process_rdev_events+0x38/0x70 [cfg80211]
  [ 5091.534465]  [<ffffffffc054a01e>] cfg80211_event_work+0x1e/0x30 [cfg80211]
  [ 5091.534470]  [<ffffffff8208da32>] process_one_work+0x182/0x4e0
  [ 5091.534474]  [<ffffffff8208ddfb>] worker_thread+0x6b/0x6a0
  [ 5091.534478]  [<ffffffff8208dd90>] ? process_one_work+0x4e0/0x4e0
  [ 5091.534482]  [<ffffffff82094c6b>] kthread+0xdb/0x100
  [ 5091.534487]  [<ffffffff82094b90>] ? kthread_create_on_node+0x1c0/0x1c0
  [ 5091.534500]  [<ffffffff82789dfc>] ret_from_fork+0x7c/0xb0
  [ 5091.534503]  [<ffffffff82094b90>] ? kthread_create_on_node+0x1c0/0x1c0
  [ 5091.534504] ---[ end trace de6b04f32a5c6efc ]---
  [ 5096.267790] ERROR @wl_inform_single_bss : cfg80211_inform_bss_frame error

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: linux-generic 3.16.0.28.29
  ProcVersionSignature: Ubuntu 3.16.0-28.37-generic 3.16.7-ckt1
  Uname: Linux 3.16.0-28-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.14.7-0ubuntu8
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  kms        1915 F.... pulseaudio
   /dev/snd/controlC0:  kms        1915 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Sun Dec 14 14:08:08 2014
  HibernationDevice: RESUME=UUID=9e7b2d0e-6a44-4ad7-9725-f9a3f5f39c33
  InstallationDate: Installed on 2013-10-25 (414 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64+mac (20131016.1)
  MachineType: Apple Inc. MacBookAir6,2
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-28-generic root=UUID=079cbe6b-6488-4e57-85d3-c3e3e2fcbe40 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.16.0-28-generic N/A
   linux-backports-modules-3.16.0-28-generic  N/A
   linux-firmware                             1.138
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 09/27/2013
  dmi.bios.vendor: Apple Inc.
  dmi.bios.version: MBA61.88Z.0099.B04.1309271229
  dmi.board.asset.tag: Base Board Asset Tag#
  dmi.board.name: Mac-7DF21CB3ED6977E5
  dmi.board.vendor: Apple Inc.
  dmi.board.version: MacBookAir6,2
  dmi.chassis.type: 10
  dmi.chassis.vendor: Apple Inc.
  dmi.chassis.version: Mac-7DF21CB3ED6977E5
  dmi.modalias: dmi:bvnAppleInc.:bvrMBA61.88Z.0099.B04.1309271229:bd09/27/2013:svnAppleInc.:pnMacBookAir6,2:pvr1.0:rvnAppleInc.:rnMac-7DF21CB3ED6977E5:rvrMacBookAir6,2:cvnAppleInc.:ct10:cvrMac-7DF21CB3ED6977E5:
  dmi.product.name: MacBookAir6,2
  dmi.product.version: 1.0
  dmi.sys.vendor: Apple Inc.

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