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[Launchpad Bug Tracker <1551148@xxxxxxxxxxxxxxxxxx>]

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

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

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https://bugs.launchpad.net/bugs/1551148

Title:
  cfg80211 kernel module crashes

Status in linux package in Ubuntu:
  Expired

Bug description:
  I keep seeing these in the syslog:

  Feb 29 10:52:22 hinkocmbp kernel: [1017930.886865] ------------[ cut here ]------------
  Feb 29 10:52:22 hinkocmbp kernel: [1017930.886888] WARNING: CPU: 0 PID: 414 at /build/linux-NgsOGa/linux-4.2.0/net/wireless/sme.c:850 cfg80211_roamed+0x86/0xa0 [cfg80211]()
  Feb 29 10:52:22 hinkocmbp kernel: [1017930.886890] Modules linked in: acpi_ipmi ipmi_devintf ipmi_msghandler btrfs xor raid6_pq ufs qnx4 hfsplus hfs minix ntfs msdos jfs xfs libcrc32c rpcsec_gss_krb5 auth_rpcgss nfsv4 nfs lockd grace arc4 md4 nls_utf8 cifs fscache nvram msr rfcomm pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) bnep btusb btrtl btbcm btintel bluetooth vboxdrv(OE) binfmt_misc uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media snd_usb_audio snd_usbmidi_lib input_leds joydev bcm5974 applesmc input_polldev nls_iso8859_1 snd_hda_codec_hdmi x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd snd_hda_codec_cirrus snd_hda_codec_generic wl(POE) snd_hda_intel snd_hda_codec cfg80211 snd_hda_core snd_seq_midi lpc_ich snd_seq_midi_event snd_hwdep bdc_pci snd_rawmidi snd_pcm snd_seq mei_me snd_seq_device mei snd_timer snd soundcore thunderbolt shpchp sbs acpi_als kfifo_buf sbshc industrialio apple_gmux mac_hid apple_bl parport_pc ppdev sunrpc lp parport autofs4 hid_logitech_hidpp hid_logitech_dj hid_apple hid_generic usbhid hid i915 i2c_algo_bit drm_kms_helper uas ahci drm libahci usb_storage firewire_ohci tg3 firewire_core ptp crc_itu_t pps_core video [last unloaded: ipmi_si]
  Feb 29 10:52:22 hinkocmbp kernel: [1017930.886959] CPU: 0 PID: 414 Comm: wl_event_handle Tainted: P        W  OE   4.2.0-27-generic #32-Ubuntu
  Feb 29 10:52:22 hinkocmbp kernel: [1017930.886960] Hardware name: Apple Inc. MacBookPro11,2/Mac-3CBD00234E554E41, BIOS MBP112.88Z.0138.B16.1509081314 09/08/2015
  Feb 29 10:52:22 hinkocmbp kernel: [1017930.886962]  0000000000000000 00000000586b797e ffff8804686a7da8 ffffffff817eae99
  Feb 29 10:52:22 hinkocmbp kernel: [1017930.886964]  0000000000000000 0000000000000000 ffff8804686a7de8 ffffffff8107b9c6
  Feb 29 10:52:22 hinkocmbp kernel: [1017930.886966]  ffff8804680e4078 ffff88046b8ca000 ffff880206fac9c0 00000000000000a4
  Feb 29 10:52:22 hinkocmbp kernel: [1017930.886968] Call Trace:
  Feb 29 10:52:22 hinkocmbp kernel: [1017930.886973]  [<ffffffff817eae99>] dump_stack+0x45/0x57
  Feb 29 10:52:22 hinkocmbp kernel: [1017930.886977]  [<ffffffff8107b9c6>] warn_slowpath_common+0x86/0xc0
  Feb 29 10:52:22 hinkocmbp kernel: [1017930.886979]  [<ffffffff8107bafa>] warn_slowpath_null+0x1a/0x20
  Feb 29 10:52:22 hinkocmbp kernel: [1017930.886989]  [<ffffffffc047a5d6>] cfg80211_roamed+0x86/0xa0 [cfg80211]
  Feb 29 10:52:22 hinkocmbp kernel: [1017930.887016]  [<ffffffffc0708965>] wl_notify_roaming_status+0xc5/0x140 [wl]
  Feb 29 10:52:22 hinkocmbp kernel: [1017930.887038]  [<ffffffffc0707fa4>] wl_event_handler+0x64/0x1e0 [wl]
  Feb 29 10:52:22 hinkocmbp kernel: [1017930.887059]  [<ffffffffc0707f40>] ? wl_notify_scan_status+0x320/0x320 [wl]
  Feb 29 10:52:22 hinkocmbp kernel: [1017930.887062]  [<ffffffff8109ae38>] kthread+0xd8/0xf0
  Feb 29 10:52:22 hinkocmbp kernel: [1017930.887064]  [<ffffffff8109ad60>] ? kthread_create_on_node+0x1f0/0x1f0
  Feb 29 10:52:22 hinkocmbp kernel: [1017930.887066]  [<ffffffff817f209f>] ret_from_fork+0x3f/0x70
  Feb 29 10:52:22 hinkocmbp kernel: [1017930.887068]  [<ffffffff8109ad60>] ? kthread_create_on_node+0x1f0/0x1f0
  Feb 29 10:52:22 hinkocmbp kernel: [1017930.887069] ---[ end trace 3ae35abf2bc2cf7a ]---
  --- 
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC2:  hinkokocevar   1918 F.... pulseaudio
   /dev/snd/controlC0:  hinkokocevar   1918 F.... pulseaudio
   /dev/snd/controlC1:  hinkokocevar   1918 F.... pulseaudio
  CurrentDesktop: XFCE
  DistroRelease: Ubuntu 15.10
  HibernationDevice: RESUME=UUID=21e13044-6484-46f2-aa2c-256b7f158491
  MachineType: Apple Inc. MacBookPro11,2
  NonfreeKernelModules: wl
  Package: linux (not installed)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-27-generic.efi.signed root=UUID=e9920a54-14db-4634-b582-54432674a4ef ro noprompt persistent libata.force=noncq elevator=noop quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 4.2.0-27.32-generic 4.2.8-ckt1
  RelatedPackageVersions:
   linux-restricted-modules-4.2.0-27-generic N/A
   linux-backports-modules-4.2.0-27-generic  N/A
   linux-firmware                            1.149.3
  RfKill: Can't open RFKILL control device: Permission denied
  Tags:  wily
  UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
  Uname: Linux 4.2.0-27-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo vboxusers
  _MarkForUpload: True
  dmi.bios.date: 09/08/2015
  dmi.bios.vendor: Apple Inc.
  dmi.bios.version: MBP112.88Z.0138.B16.1509081314
  dmi.board.asset.tag: Base Board Asset Tag#
  dmi.board.name: Mac-3CBD00234E554E41
  dmi.board.vendor: Apple Inc.
  dmi.board.version: MacBookPro11,2
  dmi.chassis.type: 10
  dmi.chassis.vendor: Apple Inc.
  dmi.chassis.version: Mac-3CBD00234E554E41
  dmi.modalias: dmi:bvnAppleInc.:bvrMBP112.88Z.0138.B16.1509081314:bd09/08/2015:svnAppleInc.:pnMacBookPro11,2:pvr1.0:rvnAppleInc.:rnMac-3CBD00234E554E41:rvrMacBookPro11,2:cvnAppleInc.:ct10:cvrMac-3CBD00234E554E41:
  dmi.product.name: MacBookPro11,2
  dmi.product.version: 1.0
  dmi.sys.vendor: Apple Inc.

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