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[Bug 1537183] Re: [iwlwifi] Timeout waiting for hardware access (CSR_GP_CNTRL 0xffffffff)

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: Seth Forshee <seth.forshee+lp@xxxxxxxxxxxxx>
Date: Mon, 25 Jan 2016 13:22:38 -0000
Reply-to: Bug 1537183 <1537183@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Thanks Emmanuel. Closing won't fix based on your feedback.

** Changed in: linux (Ubuntu)
       Status: Incomplete => Won't Fix

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https://bugs.launchpad.net/bugs/1537183

Title:
  [iwlwifi] Timeout waiting for hardware access (CSR_GP_CNTRL
  0xffffffff)

Status in linux package in Ubuntu:
  Won't Fix

Bug description:
  Was using wireless on my x220 thinkpad, took it out of the dock and
  wireless stopped working. I couldn't remove and re-insert iwlwifi to
  get this working. I had to do a complete reboot of the system before
  wireless worked again.

  Kernel:
  Linux $machine 4.4.0-0-generic #14-Ubuntu SMP Tue Jan 19 19:12:33 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
  https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/xenial/commit/?h=master-next&id=d2af89e7587c48c04689cad2f1300f01eda02619

  Device:
  03:00.0 Network controller: Intel Corporation Centrino Advanced-N 6205 [Taylor Peak] (rev 34)

  Backtrace:
  [42347.039777] iwlwifi 0000:03:00.0: Error sending REPLY_ADD_STA: time out after 2000ms.
  [42347.039789] iwlwifi 0000:03:00.0: Current CMD queue read_ptr 50 write_ptr 51
  [42347.059246] ------------[ cut here ]------------
  [42347.059267] WARNING: CPU: 1 PID: 29666 at /build/linux-_gjr_9/linux-4.4.0/drivers/net/wireless/iwlwifi/pcie/trans.c:1543 iwl_trans_pcie_grab_nic_access+0xfb/0x110 [iwlwifi]()
  [42347.059270] Timeout waiting for hardware access (CSR_GP_CNTRL 0xffffffff)
  [42347.059272] Modules linked in: nls_utf8 isofs uas usb_storage ctr ccm rfcomm xt_conntrack ipt_REJECT nf_reject_ipv4 ebtable_filter ebtables ip6table_filter ip6_tables overlay xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 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 binfmt_misc bnep intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp joydev serio_raw uvcvideo videobuf2_vmalloc videobuf2_memops snd_hda_codec_hdmi videobuf2_v4l2 arc4 videobuf2_core snd_hda_codec_conexant snd_hda_codec_generic btusb iwldvm btrtl btbcm v4l2_common btintel snd_hda_intel mac80211 videodev bluetooth thinkpad_acpi media input_leds nvram iwlwifi snd_seq_midi snd_seq_midi_event snd_hda_codec snd_rawmidi cfg80211
  [42347.059336]  lpc_ich snd_hda_core snd_hwdep snd_seq snd_pcm shpchp snd_seq_device mei_me mei snd_timer snd soundcore mac_hid kvm_intel kvm irqbypass parport_pc ppdev lp parport autofs4 drbg ansi_cprng algif_skcipher af_alg dm_crypt hid_logitech_hidpp hid_logitech_dj hid_generic usbhid hid crct10dif_pclmul crc32_pclmul i915 aesni_intel aes_x86_64 lrw gf128mul i2c_algo_bit glue_helper ablk_helper drm_kms_helper cryptd syscopyarea sysfillrect sysimgblt fb_sys_fops drm psmouse e1000e ahci sdhci_pci libahci sdhci ptp pps_core wmi fjes video
  [42347.059392] CPU: 1 PID: 29666 Comm: kworker/u16:0 Not tainted 4.4.0-0-generic #14-Ubuntu
  [42347.059395] Hardware name: LENOVO 42872WU/42872WU, BIOS 8DET55WW (1.25 ) 11/01/2011
  [42347.059423] Workqueue: phy0 ieee80211_iface_work [mac80211]
  [42347.059427]  0000000000000000 000000004c1c074d ffff880351173780 ffffffff813d8aa4
  [42347.059432]  ffff8803511737c8 ffff8803511737b8 ffffffff8107dc32 ffff8800356b4000
  [42347.059436]  0000000000000000 ffff8800356b75f8 ffff880351173868 0000000000000000
  [42347.059440] Call Trace:
  [42347.059450]  [<ffffffff813d8aa4>] dump_stack+0x44/0x60
  [42347.059456]  [<ffffffff8107dc32>] warn_slowpath_common+0x82/0xc0
  [42347.059461]  [<ffffffff8107dccc>] warn_slowpath_fmt+0x5c/0x80
  [42347.059469]  [<ffffffffc05ee0ff>] ? iwl_read32+0x1f/0x70 [iwlwifi]
  [42347.059481]  [<ffffffffc05fd3bb>] iwl_trans_pcie_grab_nic_access+0xfb/0x110 [iwlwifi]
  [42347.059489]  [<ffffffffc05ee589>] iwl_write_prph+0x39/0x80 [iwlwifi]
  [42347.059497]  [<ffffffffc05ee5f6>] iwl_force_nmi+0x26/0x60 [iwlwifi]
  [42347.059506]  [<ffffffffc05fa2d8>] iwl_trans_pcie_send_hcmd+0x538/0x5a0 [iwlwifi]
  [42347.059513]  [<ffffffff810c0010>] ? wake_atomic_t_function+0x60/0x60
  [42347.059525]  [<ffffffffc080ae5e>] iwl_dvm_send_cmd+0x5e/0x120 [iwldvm]
  [42347.059535]  [<ffffffffc080edd3>] iwl_send_add_sta+0x113/0x260 [iwldvm]
  [42347.059542]  [<ffffffff810b1229>] ? update_curr+0x119/0x150
  [42347.059551]  [<ffffffffc081134a>] iwl_sta_rx_agg_stop+0xfa/0x150 [iwldvm]
  [42347.059560]  [<ffffffffc0804ec4>] iwlagn_mac_ampdu_action+0x1c4/0x310 [iwldvm]
  [42347.059576]  [<ffffffffc0714742>] drv_ampdu_action+0xf2/0x1b0 [mac80211]
  [42347.059597]  [<ffffffffc0720a9e>] ___ieee80211_stop_rx_ba_session+0xbe/0x1d0 [mac80211]
  [42347.059616]  [<ffffffffc0720bff>] __ieee80211_stop_rx_ba_session+0x4f/0x70 [mac80211]
  [42347.059634]  [<ffffffffc071e876>] ieee80211_sta_tear_down_BA_sessions+0x56/0x70 [mac80211]
  [42347.059651]  [<ffffffffc0715b44>] __sta_info_destroy_part1+0x54/0x400 [mac80211]
  [42347.059668]  [<ffffffffc07187ca>] __sta_info_flush+0x14a/0x1b0 [mac80211]
  [42347.059696]  [<ffffffffc075e1ca>] ieee80211_set_disassoc+0xba/0x3d0 [mac80211]
  [42347.059726]  [<ffffffffc075e518>] ieee80211_sta_connection_lost+0x38/0x70 [mac80211]
  [42347.059766]  [<ffffffffc0761aa8>] ieee80211_sta_work+0x478/0x720 [mac80211]
  [42347.059771]  [<ffffffff810b5785>] ? put_prev_entity+0x35/0x7d0
  [42347.059801]  [<ffffffffc072665e>] ieee80211_iface_work+0x33e/0x3e0 [mac80211]
  [42347.059807]  [<ffffffff8109699a>] process_one_work+0x1aa/0x440
  [42347.059811]  [<ffffffff81096c7b>] worker_thread+0x4b/0x4c0
  [42347.059815]  [<ffffffff81096c30>] ? process_one_work+0x440/0x440
  [42347.059821]  [<ffffffff8109ce38>] kthread+0xd8/0xf0
  [42347.059827]  [<ffffffff8109cd60>] ? kthread_create_on_node+0x1e0/0x1e0
  [42347.059833]  [<ffffffff8180decf>] ret_from_fork+0x3f/0x70
  [42347.059838]  [<ffffffff8109cd60>] ? kthread_create_on_node+0x1e0/0x1e0
  [42347.059841] ---[ end trace e3b87e5656566a95 ]---
  [42347.079363] iwlwifi 0000:03:00.0: Loaded firmware version: 18.168.6.1
  [42347.098546] iwlwifi 0000:03:00.0: Start IWL Error Log Dump:
  [42347.098551] iwlwifi 0000:03:00.0: Status: 0x0000004C, count: -30717
  [42347.098554] iwlwifi 0000:03:00.0: 0x511737E0 | ADVANCED_SYSASSERT          
  [42347.098557] iwlwifi 0000:03:00.0: 0xFFFF8803 | uPc
  [42347.098560] iwlwifi 0000:03:00.0: 0x4C1C074D | branchlink1
  [42347.098562] iwlwifi 0000:03:00.0: 0x00000000 | branchlink2
  [42347.098565] iwlwifi 0000:03:00.0: 0x00000246 | interruptlink1
  [42347.098567] iwlwifi 0000:03:00.0: 0x00000000 | interruptlink2
  [42347.098570] iwlwifi 0000:03:00.0: 0x00000246 | data1
  [42347.098577] iwlwifi 0000:03:00.0: 0x00000000 | data2
  [42347.098599] iwlwifi 0000:03:00.0: 0x51173820 | line
  [42347.098606] iwlwifi 0000:03:00.0: 0xFFFF8803 | beacon time
  [42347.098616] iwlwifi 0000:03:00.0: 0xC0826DCC | tsf low
  [42347.098620] iwlwifi 0000:03:00.0: 0xFFFFFFFF | tsf hi
  [42347.098623] iwlwifi 0000:03:00.0: 0x04C1C014 | time gp1
  [42347.098625] iwlwifi 0000:03:00.0: 0xFFFF8804 | time gp2
  [42347.098627] iwlwifi 0000:03:00.0: 0x0000063F | time gp3
  [42347.098629] iwlwifi 0000:03:00.0: 0x00000000 | uCode version
  [42347.098632] iwlwifi 0000:03:00.0: 0x51173890 | hw version
  [42347.098634] iwlwifi 0000:03:00.0: 0xFFFF8803 | board version
  [42347.098636] iwlwifi 0000:03:00.0: 0xFFFFFFFF | hcmd
  [42347.098639] iwlwifi 0000:03:00.0: 0x51173830 | isr0
  [42347.098641] iwlwifi 0000:03:00.0: 0xFFFF8803 | isr1
  [42347.098643] iwlwifi 0000:03:00.0: 0x00000020 | isr2
  [42347.098645] iwlwifi 0000:03:00.0: 0xFFFF8800 | isr3
  [42347.098647] iwlwifi 0000:03:00.0: 0x511738A0 | isr4
  [42347.098650] iwlwifi 0000:03:00.0: 0xFFFF8803 | isr_pref
  [42347.098652] iwlwifi 0000:03:00.0: 0x51173850 | wait_event
  [42347.098654] iwlwifi 0000:03:00.0: 0xFFFF8803 | l2p_control
  [42347.098656] iwlwifi 0000:03:00.0: 0x4C1C074D | l2p_duration
  [42347.098659] iwlwifi 0000:03:00.0: 0x00000000 | l2p_mhvalid
  [42347.098661] iwlwifi 0000:03:00.0: 0x00000000 | l2p_addr_match
  [42347.098663] iwlwifi 0000:03:00.0: 0x00000000 | lmpm_pmg_sel
  [42347.098665] iwlwifi 0000:03:00.0: 0x51173890 | timestamp
  [42347.098668] iwlwifi 0000:03:00.0: 0xFFFF8803 | flow_handler
  [42347.117921] ------------[ cut here ]------------
  [42347.117935] WARNING: CPU: 1 PID: 29666 at /build/linux-_gjr_9/linux-4.4.0/drivers/net/wireless/iwlwifi/dvm/../iwl-trans.h:1058 iwl_dump_nic_event_log+0x323/0x330 [iwldvm]()
  [42347.117937] Modules linked in: nls_utf8 isofs uas usb_storage ctr ccm rfcomm xt_conntrack ipt_REJECT nf_reject_ipv4 ebtable_filter ebtables ip6table_filter ip6_tables overlay xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 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 binfmt_misc bnep intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp joydev serio_raw uvcvideo videobuf2_vmalloc videobuf2_memops snd_hda_codec_hdmi videobuf2_v4l2 arc4 videobuf2_core snd_hda_codec_conexant snd_hda_codec_generic btusb iwldvm btrtl btbcm v4l2_common btintel snd_hda_intel mac80211 videodev bluetooth thinkpad_acpi media input_leds nvram iwlwifi snd_seq_midi snd_seq_midi_event snd_hda_codec snd_rawmidi cfg80211
  [42347.117998]  lpc_ich snd_hda_core snd_hwdep snd_seq snd_pcm shpchp snd_seq_device mei_me mei snd_timer snd soundcore mac_hid kvm_intel kvm irqbypass parport_pc ppdev lp parport autofs4 drbg ansi_cprng algif_skcipher af_alg dm_crypt hid_logitech_hidpp hid_logitech_dj hid_generic usbhid hid crct10dif_pclmul crc32_pclmul i915 aesni_intel aes_x86_64 lrw gf128mul i2c_algo_bit glue_helper ablk_helper drm_kms_helper cryptd syscopyarea sysfillrect sysimgblt fb_sys_fops drm psmouse e1000e ahci sdhci_pci libahci sdhci ptp pps_core wmi fjes video
  [42347.118042] CPU: 1 PID: 29666 Comm: kworker/u16:0 Tainted: G        W       4.4.0-0-generic #14-Ubuntu
  [42347.118044] Hardware name: LENOVO 42872WU/42872WU, BIOS 8DET55WW (1.25 ) 11/01/2011
  [42347.118059] Workqueue: phy0 ieee80211_iface_work [mac80211]
  [42347.118061]  0000000000000000 000000004c1c074d ffff8803511737e8 ffffffff813d8aa4
  [42347.118067]  0000000000000000 ffff880351173820 ffffffff8107dc32 0000000000803e7c
  [42347.118070]  ffff880407ff14c8 00000000a5a5a5a5 0000000000000001 ffff8800356b4000
  [42347.118072] Call Trace:
  [42347.118078]  [<ffffffff813d8aa4>] dump_stack+0x44/0x60
  [42347.118081]  [<ffffffff8107dc32>] warn_slowpath_common+0x82/0xc0
  [42347.118083]  [<ffffffff8107dd7a>] warn_slowpath_null+0x1a/0x20
  [42347.118096]  [<ffffffffc08020c3>] iwl_dump_nic_event_log+0x323/0x330 [iwldvm]
  [42347.118102]  [<ffffffffc080210e>] iwl_nic_error+0x3e/0x50 [iwldvm]
  [42347.118112]  [<ffffffffc05fa2f8>] iwl_trans_pcie_send_hcmd+0x558/0x5a0 [iwlwifi]
  [42347.118117]  [<ffffffff810c0010>] ? wake_atomic_t_function+0x60/0x60
  [42347.118125]  [<ffffffffc080ae5e>] iwl_dvm_send_cmd+0x5e/0x120 [iwldvm]
  [42347.118132]  [<ffffffffc080edd3>] iwl_send_add_sta+0x113/0x260 [iwldvm]
  [42347.118137]  [<ffffffff810b1229>] ? update_curr+0x119/0x150
  [42347.118144]  [<ffffffffc081134a>] iwl_sta_rx_agg_stop+0xfa/0x150 [iwldvm]
  [42347.118150]  [<ffffffffc0804ec4>] iwlagn_mac_ampdu_action+0x1c4/0x310 [iwldvm]
  [42347.118162]  [<ffffffffc0714742>] drv_ampdu_action+0xf2/0x1b0 [mac80211]
  [42347.118177]  [<ffffffffc0720a9e>] ___ieee80211_stop_rx_ba_session+0xbe/0x1d0 [mac80211]
  [42347.118191]  [<ffffffffc0720bff>] __ieee80211_stop_rx_ba_session+0x4f/0x70 [mac80211]
  [42347.118205]  [<ffffffffc071e876>] ieee80211_sta_tear_down_BA_sessions+0x56/0x70 [mac80211]
  [42347.118218]  [<ffffffffc0715b44>] __sta_info_destroy_part1+0x54/0x400 [mac80211]
  [42347.118231]  [<ffffffffc07187ca>] __sta_info_flush+0x14a/0x1b0 [mac80211]
  [42347.118252]  [<ffffffffc075e1ca>] ieee80211_set_disassoc+0xba/0x3d0 [mac80211]
  [42347.118269]  [<ffffffffc075e518>] ieee80211_sta_connection_lost+0x38/0x70 [mac80211]
  [42347.118286]  [<ffffffffc0761aa8>] ieee80211_sta_work+0x478/0x720 [mac80211]
  [42347.118291]  [<ffffffff810b5785>] ? put_prev_entity+0x35/0x7d0
  [42347.118305]  [<ffffffffc072665e>] ieee80211_iface_work+0x33e/0x3e0 [mac80211]
  [42347.118310]  [<ffffffff8109699a>] process_one_work+0x1aa/0x440
  [42347.118316]  [<ffffffff81096c7b>] worker_thread+0x4b/0x4c0
  [42347.118319]  [<ffffffff81096c30>] ? process_one_work+0x440/0x440
  [42347.118323]  [<ffffffff8109ce38>] kthread+0xd8/0xf0
  [42347.118328]  [<ffffffff8109cd60>] ? kthread_create_on_node+0x1e0/0x1e0
  [42347.118332]  [<ffffffff8180decf>] ret_from_fork+0x3f/0x70
  [42347.118335]  [<ffffffff8109cd60>] ? kthread_create_on_node+0x1e0/0x1e0
  [42347.118338] ---[ end trace e3b87e5656566a96 ]---
  [42347.137597] ------------[ cut here ]------------
  [42347.137605] WARNING: CPU: 1 PID: 29666 at /build/linux-_gjr_9/linux-4.4.0/drivers/net/wireless/iwlwifi/dvm/../iwl-trans.h:1058 iwl_dump_nic_event_log+0x2e3/0x330 [iwldvm]()
  [42347.137607] Modules linked in: nls_utf8 isofs uas usb_storage ctr ccm rfcomm xt_conntrack ipt_REJECT nf_reject_ipv4 ebtable_filter ebtables ip6table_filter ip6_tables overlay xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 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 binfmt_misc bnep intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp joydev serio_raw uvcvideo videobuf2_vmalloc videobuf2_memops snd_hda_codec_hdmi videobuf2_v4l2 arc4 videobuf2_core snd_hda_codec_conexant snd_hda_codec_generic btusb iwldvm btrtl btbcm v4l2_common btintel snd_hda_intel mac80211 videodev bluetooth thinkpad_acpi media input_leds nvram iwlwifi snd_seq_midi snd_seq_midi_event snd_hda_codec snd_rawmidi cfg80211
  [42347.137724]  lpc_ich snd_hda_core snd_hwdep snd_seq snd_pcm shpchp snd_seq_device mei_me mei snd_timer snd soundcore mac_hid kvm_intel kvm irqbypass parport_pc ppdev lp parport autofs4 drbg ansi_cprng algif_skcipher af_alg dm_crypt hid_logitech_hidpp hid_logitech_dj hid_generic usbhid hid crct10dif_pclmul crc32_pclmul i915 aesni_intel aes_x86_64 lrw gf128mul i2c_algo_bit glue_helper ablk_helper drm_kms_helper cryptd syscopyarea sysfillrect sysimgblt fb_sys_fops drm psmouse e1000e ahci sdhci_pci libahci sdhci ptp pps_core wmi fjes video
  [42347.137756] CPU: 1 PID: 29666 Comm: kworker/u16:0 Tainted: G        W       4.4.0-0-generic #14-Ubuntu
  [42347.137757] Hardware name: LENOVO 42872WU/42872WU, BIOS 8DET55WW (1.25 ) 11/01/2011
  [42347.137770] Workqueue: phy0 ieee80211_iface_work [mac80211]
  [42347.137772]  0000000000000000 000000004c1c074d ffff8803511737e8 ffffffff813d8aa4
  [42347.137774]  0000000000000000 ffff880351173820 ffffffff8107dc32 0000000000803e7c
  [42347.137777]  ffff880407ff14c8 00000000a5a5a5a5 0000000000000001 ffff8800356b4000
  [42347.137779] Call Trace:
  [42347.137783]  [<ffffffff813d8aa4>] dump_stack+0x44/0x60
  [42347.137786]  [<ffffffff8107dc32>] warn_slowpath_common+0x82/0xc0
  [42347.137788]  [<ffffffff8107dd7a>] warn_slowpath_null+0x1a/0x20
  [42347.137793]  [<ffffffffc0802083>] iwl_dump_nic_event_log+0x2e3/0x330 [iwldvm]
  [42347.137798]  [<ffffffffc080210e>] iwl_nic_error+0x3e/0x50 [iwldvm]
  [42347.137813]  [<ffffffffc05fa2f8>] iwl_trans_pcie_send_hcmd+0x558/0x5a0 [iwlwifi]
  [42347.137820]  [<ffffffff810c0010>] ? wake_atomic_t_function+0x60/0x60
  [42347.137832]  [<ffffffffc080ae5e>] iwl_dvm_send_cmd+0x5e/0x120 [iwldvm]
  [42347.137841]  [<ffffffffc080edd3>] iwl_send_add_sta+0x113/0x260 [iwldvm]
  [42347.137849]  [<ffffffff810b1229>] ? update_curr+0x119/0x150
  [42347.137856]  [<ffffffffc081134a>] iwl_sta_rx_agg_stop+0xfa/0x150 [iwldvm]
  [42347.137861]  [<ffffffffc0804ec4>] iwlagn_mac_ampdu_action+0x1c4/0x310 [iwldvm]
  [42347.137871]  [<ffffffffc0714742>] drv_ampdu_action+0xf2/0x1b0 [mac80211]
  [42347.137883]  [<ffffffffc0720a9e>] ___ieee80211_stop_rx_ba_session+0xbe/0x1d0 [mac80211]
  [42347.137899]  [<ffffffffc0720bff>] __ieee80211_stop_rx_ba_session+0x4f/0x70 [mac80211]
  [42347.137913]  [<ffffffffc071e876>] ieee80211_sta_tear_down_BA_sessions+0x56/0x70 [mac80211]
  [42347.137923]  [<ffffffffc0715b44>] __sta_info_destroy_part1+0x54/0x400 [mac80211]
  [42347.137934]  [<ffffffffc07187ca>] __sta_info_flush+0x14a/0x1b0 [mac80211]
  [42347.137950]  [<ffffffffc075e1ca>] ieee80211_set_disassoc+0xba/0x3d0 [mac80211]
  [42347.137964]  [<ffffffffc075e518>] ieee80211_sta_connection_lost+0x38/0x70 [mac80211]
  [42347.137979]  [<ffffffffc0761aa8>] ieee80211_sta_work+0x478/0x720 [mac80211]
  [42347.137986]  [<ffffffff810b5785>] ? put_prev_entity+0x35/0x7d0
  [42347.137998]  [<ffffffffc072665e>] ieee80211_iface_work+0x33e/0x3e0 [mac80211]
  [42347.138001]  [<ffffffff8109699a>] process_one_work+0x1aa/0x440
  [42347.138004]  [<ffffffff81096c7b>] worker_thread+0x4b/0x4c0
  [42347.138006]  [<ffffffff81096c30>] ? process_one_work+0x440/0x440
  [42347.138009]  [<ffffffff8109ce38>] kthread+0xd8/0xf0
  [42347.138013]  [<ffffffff8109cd60>] ? kthread_create_on_node+0x1e0/0x1e0
  [42347.138015]  [<ffffffff8180decf>] ret_from_fork+0x3f/0x70
  [42347.138019]  [<ffffffff8109cd60>] ? kthread_create_on_node+0x1e0/0x1e0
  [42347.138020] ---[ end trace e3b87e5656566a97 ]---
  [42347.157450] ------------[ cut here ]------------
  [42347.157457] WARNING: CPU: 1 PID: 29666 at /build/linux-_gjr_9/linux-4.4.0/drivers/net/wireless/iwlwifi/dvm/../iwl-trans.h:1058 iwl_dump_nic_event_log+0x300/0x330 [iwldvm]()
  [42347.157459] Modules linked in: nls_utf8 isofs uas usb_storage ctr ccm rfcomm xt_conntrack ipt_REJECT nf_reject_ipv4 ebtable_filter ebtables ip6table_filter ip6_tables overlay xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 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 binfmt_misc bnep intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp joydev serio_raw uvcvideo videobuf2_vmalloc videobuf2_memops snd_hda_codec_hdmi videobuf2_v4l2 arc4 videobuf2_core snd_hda_codec_conexant snd_hda_codec_generic btusb iwldvm btrtl btbcm v4l2_common btintel snd_hda_intel mac80211 videodev bluetooth thinkpad_acpi media input_leds nvram iwlwifi snd_seq_midi snd_seq_midi_event snd_hda_codec snd_rawmidi cfg80211
  [42347.157535]  lpc_ich snd_hda_core snd_hwdep snd_seq snd_pcm shpchp snd_seq_device mei_me mei snd_timer snd soundcore mac_hid kvm_intel kvm irqbypass parport_pc ppdev lp parport autofs4 drbg ansi_cprng algif_skcipher af_alg dm_crypt hid_logitech_hidpp hid_logitech_dj hid_generic usbhid hid crct10dif_pclmul crc32_pclmul i915 aesni_intel aes_x86_64 lrw gf128mul i2c_algo_bit glue_helper ablk_helper drm_kms_helper cryptd syscopyarea sysfillrect sysimgblt fb_sys_fops drm psmouse e1000e ahci sdhci_pci libahci sdhci ptp pps_core wmi fjes video
  [42347.157565] CPU: 1 PID: 29666 Comm: kworker/u16:0 Tainted: G        W       4.4.0-0-generic #14-Ubuntu
  [42347.157566] Hardware name: LENOVO 42872WU/42872WU, BIOS 8DET55WW (1.25 ) 11/01/2011
  [42347.157584] Workqueue: phy0 ieee80211_iface_work [mac80211]
  [42347.157592]  0000000000000000 000000004c1c074d ffff8803511737e8 ffffffff813d8aa4
  [42347.157595]  0000000000000000 ffff880351173820 ffffffff8107dc32 0000000000803e7c
  [42347.157597]  ffff880407ff14c8 00000000a5a5a5a5 0000000000000001 ffff8800356b4000
  [42347.157607] Call Trace:
  [42347.157611]  [<ffffffff813d8aa4>] dump_stack+0x44/0x60
  [42347.157614]  [<ffffffff8107dc32>] warn_slowpath_common+0x82/0xc0
  [42347.157621]  [<ffffffff8107dd7a>] warn_slowpath_null+0x1a/0x20
  [42347.157625]  [<ffffffffc08020a0>] iwl_dump_nic_event_log+0x300/0x330 [iwldvm]
  [42347.157633]  [<ffffffffc080210e>] iwl_nic_error+0x3e/0x50 [iwldvm]
  [42347.157642]  [<ffffffffc05fa2f8>] iwl_trans_pcie_send_hcmd+0x558/0x5a0 [iwlwifi]
  [42347.157645]  [<ffffffff810c0010>] ? wake_atomic_t_function+0x60/0x60
  [42347.157651]  [<ffffffffc080ae5e>] iwl_dvm_send_cmd+0x5e/0x120 [iwldvm]
  [42347.157657]  [<ffffffffc080edd3>] iwl_send_add_sta+0x113/0x260 [iwldvm]
  [42347.157660]  [<ffffffff810b1229>] ? update_curr+0x119/0x150
  [42347.157666]  [<ffffffffc081134a>] iwl_sta_rx_agg_stop+0xfa/0x150 [iwldvm]
  [42347.157671]  [<ffffffffc0804ec4>] iwlagn_mac_ampdu_action+0x1c4/0x310 [iwldvm]
  [42347.157681]  [<ffffffffc0714742>] drv_ampdu_action+0xf2/0x1b0 [mac80211]
  [42347.157693]  [<ffffffffc0720a9e>] ___ieee80211_stop_rx_ba_session+0xbe/0x1d0 [mac80211]
  [42347.157704]  [<ffffffffc0720bff>] __ieee80211_stop_rx_ba_session+0x4f/0x70 [mac80211]
  [42347.157715]  [<ffffffffc071e876>] ieee80211_sta_tear_down_BA_sessions+0x56/0x70 [mac80211]
  [42347.157725]  [<ffffffffc0715b44>] __sta_info_destroy_part1+0x54/0x400 [mac80211]
  [42347.157735]  [<ffffffffc07187ca>] __sta_info_flush+0x14a/0x1b0 [mac80211]
  [42347.157752]  [<ffffffffc075e1ca>] ieee80211_set_disassoc+0xba/0x3d0 [mac80211]
  [42347.157766]  [<ffffffffc075e518>] ieee80211_sta_connection_lost+0x38/0x70 [mac80211]
  [42347.157780]  [<ffffffffc0761aa8>] ieee80211_sta_work+0x478/0x720 [mac80211]
  [42347.157783]  [<ffffffff810b5785>] ? put_prev_entity+0x35/0x7d0
  [42347.157795]  [<ffffffffc072665e>] ieee80211_iface_work+0x33e/0x3e0 [mac80211]
  [42347.157798]  [<ffffffff8109699a>] process_one_work+0x1aa/0x440
  [42347.157801]  [<ffffffff81096c7b>] worker_thread+0x4b/0x4c0
  [42347.157804]  [<ffffffff81096c30>] ? process_one_work+0x440/0x440
  [42347.157807]  [<ffffffff8109ce38>] kthread+0xd8/0xf0
  [42347.157810]  [<ffffffff8109cd60>] ? kthread_create_on_node+0x1e0/0x1e0
  [42347.157813]  [<ffffffff8180decf>] ret_from_fork+0x3f/0x70
  [42347.157816]  [<ffffffff8109cd60>] ? kthread_create_on_node+0x1e0/0x1e0
  [42347.157818] ---[ end trace e3b87e5656566a98 ]---
  [42347.177252] ------------[ cut here ]------------
  [42347.177260] WARNING: CPU: 1 PID: 29666 at /build/linux-_gjr_9/linux-4.4.0/drivers/net/wireless/iwlwifi/dvm/../iwl-trans.h:1058 iwl_dump_nic_event_log+0x2cd/0x330 [iwldvm]()
  [42347.177262] Modules linked in: nls_utf8 isofs uas usb_storage ctr ccm rfcomm xt_conntrack ipt_REJECT nf_reject_ipv4 ebtable_filter ebtables ip6table_filter ip6_tables overlay xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 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 binfmt_misc bnep intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp joydev serio_raw uvcvideo videobuf2_vmalloc videobuf2_memops snd_hda_codec_hdmi videobuf2_v4l2 arc4 videobuf2_core snd_hda_codec_conexant snd_hda_codec_generic btusb iwldvm btrtl btbcm v4l2_common btintel snd_hda_intel mac80211 videodev bluetooth thinkpad_acpi media input_leds nvram iwlwifi snd_seq_midi snd_seq_midi_event snd_hda_codec snd_rawmidi cfg80211
  [42347.177350]  lpc_ich snd_hda_core snd_hwdep snd_seq snd_pcm shpchp snd_seq_device mei_me mei snd_timer snd soundcore mac_hid kvm_intel kvm irqbypass parport_pc ppdev lp parport autofs4 drbg ansi_cprng algif_skcipher af_alg dm_crypt hid_logitech_hidpp hid_logitech_dj hid_generic usbhid hid crct10dif_pclmul crc32_pclmul i915 aesni_intel aes_x86_64 lrw gf128mul i2c_algo_bit glue_helper ablk_helper drm_kms_helper cryptd syscopyarea sysfillrect sysimgblt fb_sys_fops drm psmouse e1000e ahci sdhci_pci libahci sdhci ptp pps_core wmi fjes video
  [42347.177382] CPU: 1 PID: 29666 Comm: kworker/u16:0 Tainted: G        W       4.4.0-0-generic #14-Ubuntu
  [42347.177383] Hardware name: LENOVO 42872WU/42872WU, BIOS 8DET55WW (1.25 ) 11/01/2011
  [42347.177397] Workqueue: phy0 ieee80211_iface_work [mac80211]
  [42347.177407]  0000000000000000 000000004c1c074d ffff8803511737e8 ffffffff813d8aa4
  [42347.177410]  0000000000000000 ffff880351173820 ffffffff8107dc32 00000000a5a5a5a5
  [42347.177413]  ffff880407ff14c8 00000000a5a5a5a5 0000000000000001 ffff8800356b4000
  [42347.177415] Call Trace:
  [42347.177419]  [<ffffffff813d8aa4>] dump_stack+0x44/0x60
  [42347.177427]  [<ffffffff8107dc32>] warn_slowpath_common+0x82/0xc0
  [42347.177433]  [<ffffffff8107dd7a>] warn_slowpath_null+0x1a/0x20
  [42347.177439]  [<ffffffffc080206d>] iwl_dump_nic_event_log+0x2cd/0x330 [iwldvm]
  [42347.177444]  [<ffffffffc080210e>] iwl_nic_error+0x3e/0x50 [iwldvm]
  [42347.177451]  [<ffffffffc05fa2f8>] iwl_trans_pcie_send_hcmd+0x558/0x5a0 [iwlwifi]
  [42347.177458]  [<ffffffff810c0010>] ? wake_atomic_t_function+0x60/0x60
  [42347.177466]  [<ffffffffc080ae5e>] iwl_dvm_send_cmd+0x5e/0x120 [iwldvm]
  [42347.177472]  [<ffffffffc080edd3>] iwl_send_add_sta+0x113/0x260 [iwldvm]
  [42347.177478]  [<ffffffff810b1229>] ? update_curr+0x119/0x150
  [42347.177485]  [<ffffffffc081134a>] iwl_sta_rx_agg_stop+0xfa/0x150 [iwldvm]
  [42347.177492]  [<ffffffffc0804ec4>] iwlagn_mac_ampdu_action+0x1c4/0x310 [iwldvm]
  [42347.177502]  [<ffffffffc0714742>] drv_ampdu_action+0xf2/0x1b0 [mac80211]
  [42347.177514]  [<ffffffffc0720a9e>] ___ieee80211_stop_rx_ba_session+0xbe/0x1d0 [mac80211]
  [42347.177525]  [<ffffffffc0720bff>] __ieee80211_stop_rx_ba_session+0x4f/0x70 [mac80211]
  [42347.177537]  [<ffffffffc071e876>] ieee80211_sta_tear_down_BA_sessions+0x56/0x70 [mac80211]
  [42347.177546]  [<ffffffffc0715b44>] __sta_info_destroy_part1+0x54/0x400 [mac80211]
  [42347.177557]  [<ffffffffc07187ca>] __sta_info_flush+0x14a/0x1b0 [mac80211]
  [42347.177574]  [<ffffffffc075e1ca>] ieee80211_set_disassoc+0xba/0x3d0 [mac80211]
  [42347.177588]  [<ffffffffc075e518>] ieee80211_sta_connection_lost+0x38/0x70 [mac80211]
  [42347.177603]  [<ffffffffc0761aa8>] ieee80211_sta_work+0x478/0x720 [mac80211]
  [42347.177606]  [<ffffffff810b5785>] ? put_prev_entity+0x35/0x7d0
  [42347.177618]  [<ffffffffc072665e>] ieee80211_iface_work+0x33e/0x3e0 [mac80211]
  [42347.177622]  [<ffffffff8109699a>] process_one_work+0x1aa/0x440
  [42347.177627]  [<ffffffff81096c7b>] worker_thread+0x4b/0x4c0
  [42347.177630]  [<ffffffff81096c30>] ? process_one_work+0x440/0x440
  [42347.177633]  [<ffffffff8109ce38>] kthread+0xd8/0xf0
  [42347.177637]  [<ffffffff8109cd60>] ? kthread_create_on_node+0x1e0/0x1e0
  [42347.177640]  [<ffffffff8180decf>] ret_from_fork+0x3f/0x70
  [42347.177643]  [<ffffffff8109cd60>] ? kthread_create_on_node+0x1e0/0x1e0
  [42347.177645] ---[ end trace e3b87e5656566a99 ]---
  [42347.177650] iwlwifi 0000:03:00.0: Log capacity -1515870811 is bogus, limit to 1 entries
  [42347.177653] iwlwifi 0000:03:00.0: Log write index -1515870811 is bogus, limit to 1
  [42347.177655] iwlwifi 0000:03:00.0: Start IWL Event Log Dump: display last 1 entries
  [42347.197016] wlp3s0: HW problem - can not stop rx aggregation for e8:94:f6:de:c2:c4 tid 0
  [42348.174889] ata2: hard resetting link
  [42348.539689] ata2: SATA link down (SStatus 0 SControl 300)
  [42348.539697] ata2: limiting SATA link speed to 1.5 Gbps
  [42349.191408] ieee80211 phy0: Hardware restart was requested
  [42349.191491] iwlwifi 0000:03:00.0: iwl_trans_wait_tx_queue_empty bad state = 0
  [42349.192186] iwlwifi 0000:03:00.0: L1 Disabled - LTR Disabled
  [42349.249950] iwlwifi 0000:03:00.0: L1 Disabled - LTR Disabled
  [42349.326832] iwlwifi 0000:03:00.0: Radio type=0x1-0x2-0x0
  [42353.535646] ata2: hard resetting link
  [42353.859627] ata2: SATA link down (SStatus 0 SControl 310)
  [42353.859641] ata2.00: disabled
  [42353.863614] sr 1:0:0:0: rejecting I/O to offline device
  [42353.863633] sr 1:0:0:0: killing request
  [42353.863689] sr 1:0:0:0: rejecting I/O to offline device
  [42353.867609] ata2: EH complete
  [42353.867663] ata2.00: detaching (SCSI 1:0:0:0)
  [42353.867667] ACPI: \_SB_.GDCK: undocking
  [42353.867981] ACPI: \_SB_.PCI0.SAT1.PRT1: docking
  [42353.868085] ACPI: \_SB_.PCI0.SAT1.PRT1: Unable to dock!
  [42355.055594] iwlwifi 0000:03:00.0: Failed to load firmware chunk!
  [42355.055607] iwlwifi 0000:03:00.0: Could not load the [0] uCode section
  [42357.054214] iwlwifi 0000:03:00.0: Failed to run INIT ucode: -110
  [42357.054225] iwlwifi 0000:03:00.0: Unable to initialize device.
  [42357.054228] ------------[ cut here ]------------
  [42357.054245] WARNING: CPU: 1 PID: 30225 at /build/linux-_gjr_9/linux-4.4.0/net/mac80211/util.c:1818 ieee80211_reconfig+0x1e0/0xd90 [mac80211]()
  [42357.054247] Hardware became unavailable during restart.
  [42357.054248] Modules linked in: nls_utf8 isofs uas usb_storage ctr ccm rfcomm xt_conntrack ipt_REJECT nf_reject_ipv4 ebtable_filter ebtables ip6table_filter ip6_tables overlay xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 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 binfmt_misc bnep intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp joydev serio_raw uvcvideo videobuf2_vmalloc videobuf2_memops snd_hda_codec_hdmi videobuf2_v4l2 arc4 videobuf2_core snd_hda_codec_conexant snd_hda_codec_generic btusb iwldvm btrtl btbcm v4l2_common btintel snd_hda_intel mac80211 videodev bluetooth thinkpad_acpi media input_leds nvram iwlwifi snd_seq_midi snd_seq_midi_event snd_hda_codec snd_rawmidi cfg80211
  [42357.054282]  lpc_ich snd_hda_core snd_hwdep snd_seq snd_pcm shpchp snd_seq_device mei_me mei snd_timer snd soundcore mac_hid kvm_intel kvm irqbypass parport_pc ppdev lp parport autofs4 drbg ansi_cprng algif_skcipher af_alg dm_crypt hid_logitech_hidpp hid_logitech_dj hid_generic usbhid hid crct10dif_pclmul crc32_pclmul i915 aesni_intel aes_x86_64 lrw gf128mul i2c_algo_bit glue_helper ablk_helper drm_kms_helper cryptd syscopyarea sysfillrect sysimgblt fb_sys_fops drm psmouse e1000e ahci sdhci_pci libahci sdhci ptp pps_core wmi fjes video
  [42357.054311] CPU: 1 PID: 30225 Comm: kworker/1:2 Tainted: G        W       4.4.0-0-generic #14-Ubuntu
  [42357.054313] Hardware name: LENOVO 42872WU/42872WU, BIOS 8DET55WW (1.25 ) 11/01/2011
  [42357.054320] Workqueue: events_freezable ieee80211_restart_work [mac80211]
  [42357.054322]  0000000000000000 00000000e126a5f3 ffff880307acfcf8 ffffffff813d8aa4
  [42357.054325]  ffff880307acfd40 ffff880307acfd30 ffffffff8107dc32 ffff880407ff0700
  [42357.054327]  00000000ffffff92 ffff880407ff0700 0000000000000040 ffff880407ff1380
  [42357.054329] Call Trace:
  [42357.054342]  [<ffffffff813d8aa4>] dump_stack+0x44/0x60
  [42357.054346]  [<ffffffff8107dc32>] warn_slowpath_common+0x82/0xc0
  [42357.054348]  [<ffffffff8107dccc>] warn_slowpath_fmt+0x5c/0x80
  [42357.054357]  [<ffffffffc071367a>] ? drv_start+0x6a/0xe0 [mac80211]
  [42357.054368]  [<ffffffffc0743450>] ieee80211_reconfig+0x1e0/0xd90 [mac80211]
  [42357.054371]  [<ffffffff8180b9f2>] ? mutex_lock+0x12/0x30
  [42357.054378]  [<ffffffffc07101cb>] ieee80211_restart_work+0x6b/0xa0 [mac80211]
  [42357.054381]  [<ffffffff8109699a>] process_one_work+0x1aa/0x440
  [42357.054383]  [<ffffffff81096c7b>] worker_thread+0x4b/0x4c0
  [42357.054385]  [<ffffffff81096c30>] ? process_one_work+0x440/0x440
  [42357.054387]  [<ffffffff81096c30>] ? process_one_work+0x440/0x440
  [42357.054390]  [<ffffffff8109ce38>] kthread+0xd8/0xf0
  [42357.054394]  [<ffffffff8109cd60>] ? kthread_create_on_node+0x1e0/0x1e0
  [42357.054396]  [<ffffffff8180decf>] ret_from_fork+0x3f/0x70
  [42357.054399]  [<ffffffff8109cd60>] ? kthread_create_on_node+0x1e0/0x1e0
  [42357.054401] ---[ end trace e3b87e5656566a9a ]---
  [42357.054454] ------------[ cut here ]------------
  [42357.054465] WARNING: CPU: 1 PID: 30225 at /build/linux-_gjr_9/linux-4.4.0/net/mac80211/driver-ops.h:12 drv_remove_interface+0xd9/0xe0 [mac80211]()
  [42357.054467] wlp3s0:  Failed check-sdata-in-driver check, flags: 0x4
  [42357.054468] Modules linked in: nls_utf8 isofs uas usb_storage ctr ccm rfcomm xt_conntrack ipt_REJECT nf_reject_ipv4 ebtable_filter ebtables ip6table_filter ip6_tables overlay xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 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 binfmt_misc bnep intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp joydev serio_raw uvcvideo videobuf2_vmalloc videobuf2_memops snd_hda_codec_hdmi videobuf2_v4l2 arc4 videobuf2_core snd_hda_codec_conexant snd_hda_codec_generic btusb iwldvm btrtl btbcm v4l2_common btintel snd_hda_intel mac80211 videodev bluetooth thinkpad_acpi media input_leds nvram iwlwifi snd_seq_midi snd_seq_midi_event snd_hda_codec snd_rawmidi cfg80211
  [42357.054498]  lpc_ich snd_hda_core snd_hwdep snd_seq snd_pcm shpchp snd_seq_device mei_me mei snd_timer snd soundcore mac_hid kvm_intel kvm irqbypass parport_pc ppdev lp parport autofs4 drbg ansi_cprng algif_skcipher af_alg dm_crypt hid_logitech_hidpp hid_logitech_dj hid_generic usbhid hid crct10dif_pclmul crc32_pclmul i915 aesni_intel aes_x86_64 lrw gf128mul i2c_algo_bit glue_helper ablk_helper drm_kms_helper cryptd syscopyarea sysfillrect sysimgblt fb_sys_fops drm psmouse e1000e ahci sdhci_pci libahci sdhci ptp pps_core wmi fjes video
  [42357.054524] CPU: 1 PID: 30225 Comm: kworker/1:2 Tainted: G        W       4.4.0-0-generic #14-Ubuntu
  [42357.054526] Hardware name: LENOVO 42872WU/42872WU, BIOS 8DET55WW (1.25 ) 11/01/2011
  [42357.054534] Workqueue: events_freezable ieee80211_restart_work [mac80211]
  [42357.054536]  0000000000000000 00000000e126a5f3 ffff880307acfb40 ffffffff813d8aa4
  [42357.054538]  ffff880307acfb88 ffff880307acfb78 ffffffff8107dc32 ffff880407308840
  [42357.054541]  ffff880407ff0700 ffff880407308840 ffff880407ff0e90 ffff880407ff0e90
  [42357.054543] Call Trace:
  [42357.054547]  [<ffffffff813d8aa4>] dump_stack+0x44/0x60
  [42357.054550]  [<ffffffff8107dc32>] warn_slowpath_common+0x82/0xc0
  [42357.054552]  [<ffffffff8107dccc>] warn_slowpath_fmt+0x5c/0x80
  [42357.054556]  [<ffffffff816eef89>] ? skb_dequeue+0x59/0x70
  [42357.054566]  [<ffffffffc0713aa9>] drv_remove_interface+0xd9/0xe0 [mac80211]
  [42357.054577]  [<ffffffffc072713a>] ieee80211_do_stop+0x4ba/0x7f0 [mac80211]
  [42357.054579]  [<ffffffff8180d65e>] ? _raw_spin_unlock_bh+0x1e/0x20
  [42357.054583]  [<ffffffff8172b88a>] ? dev_deactivate_many+0x20a/0x240
  [42357.054593]  [<ffffffffc072748a>] ieee80211_stop+0x1a/0x20 [mac80211]
  [42357.054596]  [<ffffffff816fe949>] __dev_close_many+0x99/0x100
  [42357.054598]  [<ffffffff816fea41>] dev_close_many+0x91/0x140
  [42357.054601]  [<ffffffff81700d0a>] dev_close.part.77+0x4a/0x70
  [42357.054603]  [<ffffffff81700d4a>] dev_close+0x1a/0x20
  [42357.054615]  [<ffffffffc05029f1>] cfg80211_shutdown_all_interfaces+0x41/0xa0 [cfg80211]
  [42357.054628]  [<ffffffffc0740cb8>] ieee80211_handle_reconfig_failure+0x98/0xb0 [mac80211]
  [42357.054640]  [<ffffffffc0743458>] ieee80211_reconfig+0x1e8/0xd90 [mac80211]
  [42357.054643]  [<ffffffff8180b9f2>] ? mutex_lock+0x12/0x30
  [42357.054651]  [<ffffffffc07101cb>] ieee80211_restart_work+0x6b/0xa0 [mac80211]
  [42357.054654]  [<ffffffff8109699a>] process_one_work+0x1aa/0x440
  [42357.054657]  [<ffffffff81096c7b>] worker_thread+0x4b/0x4c0
  [42357.054659]  [<ffffffff81096c30>] ? process_one_work+0x440/0x440
  [42357.054661]  [<ffffffff81096c30>] ? process_one_work+0x440/0x440
  [42357.054664]  [<ffffffff8109ce38>] kthread+0xd8/0xf0
  [42357.054668]  [<ffffffff8109cd60>] ? kthread_create_on_node+0x1e0/0x1e0
  [42357.054670]  [<ffffffff8180decf>] ret_from_fork+0x3f/0x70
  [42357.054673]  [<ffffffff8109cd60>] ? kthread_create_on_node+0x1e0/0x1e0
  [42357.054675] ---[ end trace e3b87e5656566a9b ]---
  [42357.054679] ------------[ cut here ]------------
  [42357.054688] WARNING: CPU: 1 PID: 30225 at /build/linux-_gjr_9/linux-4.4.0/net/mac80211/driver-ops.c:39 drv_stop+0xc3/0xd0 [mac80211]()
  [42357.054689] Modules linked in: nls_utf8 isofs uas usb_storage ctr ccm rfcomm xt_conntrack ipt_REJECT nf_reject_ipv4 ebtable_filter ebtables ip6table_filter ip6_tables overlay xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 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 binfmt_misc bnep intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp joydev serio_raw uvcvideo videobuf2_vmalloc videobuf2_memops snd_hda_codec_hdmi videobuf2_v4l2 arc4 videobuf2_core snd_hda_codec_conexant snd_hda_codec_generic btusb iwldvm btrtl btbcm v4l2_common btintel snd_hda_intel mac80211 videodev bluetooth thinkpad_acpi media input_leds nvram iwlwifi snd_seq_midi snd_seq_midi_event snd_hda_codec snd_rawmidi cfg80211
  [42357.054718]  lpc_ich snd_hda_core snd_hwdep snd_seq snd_pcm shpchp snd_seq_device mei_me mei snd_timer snd soundcore mac_hid kvm_intel kvm irqbypass parport_pc ppdev lp parport autofs4 drbg ansi_cprng algif_skcipher af_alg dm_crypt hid_logitech_hidpp hid_logitech_dj hid_generic usbhid hid crct10dif_pclmul crc32_pclmul i915 aesni_intel aes_x86_64 lrw gf128mul i2c_algo_bit glue_helper ablk_helper drm_kms_helper cryptd syscopyarea sysfillrect sysimgblt fb_sys_fops drm psmouse e1000e ahci sdhci_pci libahci sdhci ptp pps_core wmi fjes video
  [42357.054742] CPU: 1 PID: 30225 Comm: kworker/1:2 Tainted: G        W       4.4.0-0-generic #14-Ubuntu
  [42357.054744] Hardware name: LENOVO 42872WU/42872WU, BIOS 8DET55WW (1.25 ) 11/01/2011
  [42357.054752] Workqueue: events_freezable ieee80211_restart_work [mac80211]
  [42357.054753]  0000000000000000 00000000e126a5f3 ffff880307acfb88 ffffffff813d8aa4
  [42357.054755]  0000000000000000 ffff880307acfbc0 ffffffff8107dc32 ffff880407ff0700
  [42357.054757]  ffff880407ff0700 0000000000000000 ffff880407ff0e90 ffff880407ff0e90
  [42357.054759] Call Trace:
  [42357.054762]  [<ffffffff813d8aa4>] dump_stack+0x44/0x60
  [42357.054764]  [<ffffffff8107dc32>] warn_slowpath_common+0x82/0xc0
  [42357.054766]  [<ffffffff8107dd7a>] warn_slowpath_null+0x1a/0x20
  [42357.054773]  [<ffffffffc07137b3>] drv_stop+0xc3/0xd0 [mac80211]
  [42357.054782]  [<ffffffffc0743263>] ieee80211_stop_device+0x43/0x50 [mac80211]
  [42357.054792]  [<ffffffffc0727124>] ieee80211_do_stop+0x4a4/0x7f0 [mac80211]
  [42357.054794]  [<ffffffff8180d65e>] ? _raw_spin_unlock_bh+0x1e/0x20
  [42357.054796]  [<ffffffff8172b88a>] ? dev_deactivate_many+0x20a/0x240
  [42357.054805]  [<ffffffffc072748a>] ieee80211_stop+0x1a/0x20 [mac80211]
  [42357.054807]  [<ffffffff816fe949>] __dev_close_many+0x99/0x100
  [42357.054809]  [<ffffffff816fea41>] dev_close_many+0x91/0x140
  [42357.054811]  [<ffffffff81700d0a>] dev_close.part.77+0x4a/0x70
  [42357.054814]  [<ffffffff81700d4a>] dev_close+0x1a/0x20
  [42357.054822]  [<ffffffffc05029f1>] cfg80211_shutdown_all_interfaces+0x41/0xa0 [cfg80211]
  [42357.054833]  [<ffffffffc0740cb8>] ieee80211_handle_reconfig_failure+0x98/0xb0 [mac80211]
  [42357.054843]  [<ffffffffc0743458>] ieee80211_reconfig+0x1e8/0xd90 [mac80211]
  [42357.054846]  [<ffffffff8180b9f2>] ? mutex_lock+0x12/0x30
  [42357.054854]  [<ffffffffc07101cb>] ieee80211_restart_work+0x6b/0xa0 [mac80211]
  [42357.054856]  [<ffffffff8109699a>] process_one_work+0x1aa/0x440
  [42357.054859]  [<ffffffff81096c7b>] worker_thread+0x4b/0x4c0
  [42357.054861]  [<ffffffff81096c30>] ? process_one_work+0x440/0x440
  [42357.054863]  [<ffffffff81096c30>] ? process_one_work+0x440/0x440
  [42357.054866]  [<ffffffff8109ce38>] kthread+0xd8/0xf0
  [42357.054869]  [<ffffffff8109cd60>] ? kthread_create_on_node+0x1e0/0x1e0
  [42357.054871]  [<ffffffff8180decf>] ret_from_fork+0x3f/0x70
  [42357.054874]  [<ffffffff8109cd60>] ? kthread_create_on_node+0x1e0/0x1e0
  [42357.054876] ---[ end trace e3b87e5656566a9c ]---
  [42357.062642] cfg80211: World regulatory domain updated:
  [42357.062645] cfg80211:  DFS Master region: unset
  [42357.062646] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
  [42357.062649] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
  [42357.062651] cfg80211:   (2457000 KHz - 2482000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
  [42357.062653] cfg80211:   (2474000 KHz - 2494000 KHz @ 20000 KHz), (N/A, 2000 mBm), (N/A)
  [42357.062655] cfg80211:   (5170000 KHz - 5250000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (N/A)
  [42357.062657] cfg80211:   (5250000 KHz - 5330000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (0 s)
  [42357.062659] cfg80211:   (5490000 KHz - 5730000 KHz @ 160000 KHz), (N/A, 2000 mBm), (0 s)
  [42357.062661] cfg80211:   (5735000 KHz - 5835000 KHz @ 80000 KHz), (N/A, 2000 mBm), (N/A)
  [42357.062663] cfg80211:   (57240000 KHz - 63720000 KHz @ 2160000 KHz), (N/A, 0 mBm), (N/A)
  [42519.242531] iwlwifi 0000:03:00.0: L1 Disabled - LTR Disabled
  [42519.300663] iwlwifi 0000:03:00.0: L1 Disabled - LTR Disabled
  [42519.378044] iwlwifi 0000:03:00.0: Radio type=0x1-0x2-0x0
  [42525.103526] iwlwifi 0000:03:00.0: Failed to load firmware chunk!
  [42525.103539] iwlwifi 0000:03:00.0: Could not load the [0] uCode section
  [42527.100566] iwlwifi 0000:03:00.0: Failed to run INIT ucode: -110
  [42527.100988] iwlwifi 0000:03:00.0: Unable to initialize device.
  [42527.101179] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready
  [42527.158576] iwlwifi 0000:03:00.0: L1 Disabled - LTR Disabled
  [42527.216703] iwlwifi 0000:03:00.0: L1 Disabled - LTR Disabled
  [42527.293686] iwlwifi 0000:03:00.0: Radio type=0x1-0x2-0x0
  [42533.023364] iwlwifi 0000:03:00.0: Failed to load firmware chunk!
  [42533.023378] iwlwifi 0000:03:00.0: Could not load the [0] uCode section
  [42535.022254] iwlwifi 0000:03:00.0: Failed to run INIT ucode: -110
  [42535.022268] iwlwifi 0000:03:00.0: Unable to initialize device.
  [42535.031011] iwlwifi 0000:03:00.0: L1 Disabled - LTR Disabled
  [42535.088693] iwlwifi 0000:03:00.0: L1 Disabled - LTR Disabled
  [42535.165494] iwlwifi 0000:03:00.0: Radio type=0x1-0x2-0x0
  [42540.891225] iwlwifi 0000:03:00.0: Failed to load firmware chunk!
  [42540.891239] iwlwifi 0000:03:00.0: Could not load the [0] uCode section
  [42542.889176] iwlwifi 0000:03:00.0: Failed to run INIT ucode: -110
  [42542.889191] iwlwifi 0000:03:00.0: Unable to initialize device.
  [42542.889357] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready
  [42565.831341] iwlwifi 0000:03:00.0: L1 Disabled - LTR Disabled
  [42565.890405] iwlwifi 0000:03:00.0: L1 Disabled - LTR Disabled
  [42565.968087] iwlwifi 0000:03:00.0: Radio type=0x1-0x2-0x0

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References

[Bug 1537183] [NEW] [iwlwifi] Timeout waiting for hardware access (CSR_GP_CNTRL 0xffffffff)
From: Chris J Arges, 2016-01-22