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https://bugs.launchpad.net/bugs/1808389

Title:
  iwlwifi  Intel 8265 firmware crashing on lenovo x1 Gen 6

Status in Ubuntu:
  Confirmed
Status in linux-firmware package in Ubuntu:
  Fix Committed
Status in The Bionic Beaver:
  Confirmed
Status in linux-firmware source package in Bionic:
  Fix Committed
Status in The Cosmic Cuttlefish:
  Confirmed
Status in linux-firmware source package in Cosmic:
  Fix Released

Bug description:
  SRU Justification:
  ===============
  [Impact]
  repeated crashes of the Intel 8265 wireless card on a Lenovo X1 Gen6.

  [Fix]
  New iwlwifi firmware fix it.

  [Test]
  Bug reporter verified with positive result.

  [Regression Potential]
  Upstream fix, low risk.
  Bug reporter confirms fix.

  
  Original bug report:
  =================

  Seeing repeated crashes of the Intel 8265 wireless card on a Lenovo X1
  Gen6.

  Firmware: 36.7596afd4.0

  Dec 13 11:53:36 james-x1 kernel: [  856.840159] wlp2s0: send auth to 
60:38:e0:70:a2:11 (try 1/3)
  Dec 13 11:53:36 james-x1 kernel: [  856.844875] iwlwifi 0000:02:00.0: 
Microcode SW error detected.  Restarting 0x2000000.
  Dec 13 11:53:36 james-x1 kernel: [  856.845015] iwlwifi 0000:02:00.0: Start 
IWL Error Log Dump:
  Dec 13 11:53:36 james-x1 kernel: [  856.845018] iwlwifi 0000:02:00.0: Status: 
0x00000100, count: 6
  Dec 13 11:53:36 james-x1 kernel: [  856.845021] iwlwifi 0000:02:00.0: Loaded 
firmware version: 36.7596afd4.0
  Dec 13 11:53:36 james-x1 kernel: [  856.845024] iwlwifi 0000:02:00.0: 
0x00001006 | ADVANCED_SYSASSERT
  Dec 13 11:53:36 james-x1 kernel: [  856.845026] iwlwifi 0000:02:00.0: 
0x000002F0 | trm_hw_status0
  Dec 13 11:53:36 james-x1 kernel: [  856.845029] iwlwifi 0000:02:00.0: 
0x00000000 | trm_hw_status1
  Dec 13 11:53:36 james-x1 kernel: [  856.845031] iwlwifi 0000:02:00.0: 
0x000248DC | branchlink2
  Dec 13 11:53:36 james-x1 kernel: [  856.845034] iwlwifi 0000:02:00.0: 
0x0003A7DA | interruptlink1
  Dec 13 11:53:36 james-x1 kernel: [  856.845036] iwlwifi 0000:02:00.0: 
0x00000000 | interruptlink2
  Dec 13 11:53:36 james-x1 kernel: [  856.845039] iwlwifi 0000:02:00.0: 
0xFFFFFEDA | data1
  Dec 13 11:53:36 james-x1 kernel: [  856.845041] iwlwifi 0000:02:00.0: 
0xDEADBEEF | data2
  Dec 13 11:53:36 james-x1 kernel: [  856.845044] iwlwifi 0000:02:00.0: 
0xDEADBEEF | data3
  Dec 13 11:53:36 james-x1 kernel: [  856.845046] iwlwifi 0000:02:00.0: 
0x0007E1DC | beacon time
  Dec 13 11:53:36 james-x1 kernel: [  856.845048] iwlwifi 0000:02:00.0: 
0x003B0850 | tsf low
  Dec 13 11:53:36 james-x1 kernel: [  856.845051] iwlwifi 0000:02:00.0: 
0x00000000 | tsf hi
  Dec 13 11:53:36 james-x1 kernel: [  856.845053] iwlwifi 0000:02:00.0: 
0x00000000 | time gp1
  Dec 13 11:53:36 james-x1 kernel: [  856.845055] iwlwifi 0000:02:00.0: 
0x003B0852 | time gp2
  Dec 13 11:53:36 james-x1 kernel: [  856.845058] iwlwifi 0000:02:00.0: 
0x00000001 | uCode revision type
  Dec 13 11:53:36 james-x1 kernel: [  856.845060] iwlwifi 0000:02:00.0: 
0x00000024 | uCode version major
  Dec 13 11:53:36 james-x1 kernel: [  856.845063] iwlwifi 0000:02:00.0: 
0x7596AFD4 | uCode version minor
  Dec 13 11:53:36 james-x1 kernel: [  856.845065] iwlwifi 0000:02:00.0: 
0x00000230 | hw version
  Dec 13 11:53:36 james-x1 kernel: [  856.845068] iwlwifi 0000:02:00.0: 
0x18489000 | board version
  Dec 13 11:53:36 james-x1 kernel: [  856.845070] iwlwifi 0000:02:00.0: 
0x0501001C | hcmd
  Dec 13 11:53:36 james-x1 kernel: [  856.845072] iwlwifi 0000:02:00.0: 
0x00023008 | isr0
  Dec 13 11:53:36 james-x1 kernel: [  856.845075] iwlwifi 0000:02:00.0: 
0x000D0000 | isr1
  Dec 13 11:53:36 james-x1 kernel: [  856.845077] iwlwifi 0000:02:00.0: 
0x08001802 | isr2
  Dec 13 11:53:36 james-x1 kernel: [  856.845080] iwlwifi 0000:02:00.0: 
0x0041FDC0 | isr3
  Dec 13 11:53:36 james-x1 kernel: [  856.845082] iwlwifi 0000:02:00.0: 
0x00000000 | isr4
  Dec 13 11:53:36 james-x1 kernel: [  856.845084] iwlwifi 0000:02:00.0: 
0x00580118 | last cmd Id
  Dec 13 11:53:36 james-x1 kernel: [  856.845087] iwlwifi 0000:02:00.0: 
0x00000000 | wait_event
  Dec 13 11:53:36 james-x1 kernel: [  856.845089] iwlwifi 0000:02:00.0: 
0x000076DD | l2p_control
  Dec 13 11:53:36 james-x1 kernel: [  856.845091] iwlwifi 0000:02:00.0: 
0x00000020 | l2p_duration
  Dec 13 11:53:36 james-x1 kernel: [  856.845094] iwlwifi 0000:02:00.0: 
0x00000000 | l2p_mhvalid
  Dec 13 11:53:36 james-x1 kernel: [  856.845096] iwlwifi 0000:02:00.0: 
0x000000A0 | l2p_addr_match
  Dec 13 11:53:36 james-x1 kernel: [  856.845099] iwlwifi 0000:02:00.0: 
0x0000000D | lmpm_pmg_sel
  Dec 13 11:53:36 james-x1 kernel: [  856.845101] iwlwifi 0000:02:00.0: 
0x22040707 | timestamp
  Dec 13 11:53:36 james-x1 kernel: [  856.845103] iwlwifi 0000:02:00.0: 
0x00006070 | flow_handler
  Dec 13 11:53:36 james-x1 kernel: [  856.845170] iwlwifi 0000:02:00.0: Start 
IWL Error Log Dump:
  Dec 13 11:53:36 james-x1 kernel: [  856.845173] iwlwifi 0000:02:00.0: Status: 
0x00000100, count: 7
  Dec 13 11:53:36 james-x1 kernel: [  856.845176] iwlwifi 0000:02:00.0: 
0x00000070 | ADVANCED_SYSASSERT
  Dec 13 11:53:36 james-x1 kernel: [  856.845178] iwlwifi 0000:02:00.0: 
0x00000000 | umac branchlink1
  Dec 13 11:53:36 james-x1 kernel: [  856.845181] iwlwifi 0000:02:00.0: 
0xC00868A4 | umac branchlink2
  Dec 13 11:53:36 james-x1 kernel: [  856.845183] iwlwifi 0000:02:00.0: 
0xC0083A94 | umac interruptlink1
  Dec 13 11:53:36 james-x1 kernel: [  856.845186] iwlwifi 0000:02:00.0: 
0xC0083A94 | umac interruptlink2
  Dec 13 11:53:36 james-x1 kernel: [  856.845188] iwlwifi 0000:02:00.0: 
0x00000800 | umac data1
  Dec 13 11:53:36 james-x1 kernel: [  856.845191] iwlwifi 0000:02:00.0: 
0xC0083A94 | umac data2
  Dec 13 11:53:36 james-x1 kernel: [  856.845193] iwlwifi 0000:02:00.0: 
0xDEADBEEF | umac data3
  Dec 13 11:53:36 james-x1 kernel: [  856.845196] iwlwifi 0000:02:00.0: 
0x00000024 | umac major
  Dec 13 11:53:36 james-x1 kernel: [  856.845198] iwlwifi 0000:02:00.0: 
0x7596AFD4 | umac minor
  Dec 13 11:53:36 james-x1 kernel: [  856.845201] iwlwifi 0000:02:00.0: 
0xC088628C | frame pointer
  Dec 13 11:53:36 james-x1 kernel: [  856.845203] iwlwifi 0000:02:00.0: 
0xC088628C | stack pointer
  Dec 13 11:53:36 james-x1 kernel: [  856.845206] iwlwifi 0000:02:00.0: 
0x00580118 | last host cmd
  Dec 13 11:53:36 james-x1 kernel: [  856.845208] iwlwifi 0000:02:00.0: 
0x00000000 | isr status reg
  Dec 13 11:53:36 james-x1 kernel: [  856.845213] ieee80211 phy7: Hardware 
restart was requested
  Dec 13 11:53:37 james-x1 kernel: [  857.582938] iwlwifi 0000:02:00.0: 
Microcode SW error detected.  Restarting 0x2000000.
  Dec 13 11:53:37 james-x1 kernel: [  857.583199] iwlwifi 0000:02:00.0: Start 
IWL Error Log Dump:
  Dec 13 11:53:37 james-x1 kernel: [  857.583204] iwlwifi 0000:02:00.0: Status: 
0x00000110, count: 6
  Dec 13 11:53:37 james-x1 kernel: [  857.583208] iwlwifi 0000:02:00.0: Loaded 
firmware version: 36.7596afd4.0
  Dec 13 11:53:37 james-x1 kernel: [  857.583213] iwlwifi 0000:02:00.0: 
0x00003439 | ADVANCED_SYSASSERT
  Dec 13 11:53:37 james-x1 kernel: [  857.583217] iwlwifi 0000:02:00.0: 
0x00A002F0 | trm_hw_status0
  Dec 13 11:53:37 james-x1 kernel: [  857.583220] iwlwifi 0000:02:00.0: 
0x00000000 | trm_hw_status1
  Dec 13 11:53:37 james-x1 kernel: [  857.583224] iwlwifi 0000:02:00.0: 
0x000248DC | branchlink2
  Dec 13 11:53:37 james-x1 kernel: [  857.583228] iwlwifi 0000:02:00.0: 
0x0003A7DA | interruptlink1
  Dec 13 11:53:37 james-x1 kernel: [  857.583231] iwlwifi 0000:02:00.0: 
0x00000000 | interruptlink2
  Dec 13 11:53:37 james-x1 kernel: [  857.583235] iwlwifi 0000:02:00.0: 
0x00000000 | data1
  Dec 13 11:53:37 james-x1 kernel: [  857.583239] iwlwifi 0000:02:00.0: 
0x00000000 | data2
  Dec 13 11:53:37 james-x1 kernel: [  857.583242] iwlwifi 0000:02:00.0: 
0xDEADBEEF | data3
  Dec 13 11:53:37 james-x1 kernel: [  857.583246] iwlwifi 0000:02:00.0: 
0x003F49CF | beacon time
  Dec 13 11:53:37 james-x1 kernel: [  857.583249] iwlwifi 0000:02:00.0: 
0x0000B62F | tsf low
  Dec 13 11:53:37 james-x1 kernel: [  857.583253] iwlwifi 0000:02:00.0: 
0x00000000 | tsf hi
  Dec 13 11:53:37 james-x1 kernel: [  857.583256] iwlwifi 0000:02:00.0: 
0x00000000 | time gp1
  Dec 13 11:53:37 james-x1 kernel: [  857.583260] iwlwifi 0000:02:00.0: 
0x0000B631 | time gp2
  Dec 13 11:53:37 james-x1 kernel: [  857.583264] iwlwifi 0000:02:00.0: 
0x00000001 | uCode revision type
  Dec 13 11:53:37 james-x1 kernel: [  857.583267] iwlwifi 0000:02:00.0: 
0x00000024 | uCode version major
  Dec 13 11:53:37 james-x1 kernel: [  857.583271] iwlwifi 0000:02:00.0: 
0x7596AFD4 | uCode version minor
  Dec 13 11:53:37 james-x1 kernel: [  857.583275] iwlwifi 0000:02:00.0: 
0x00000230 | hw version
  Dec 13 11:53:37 james-x1 kernel: [  857.583278] iwlwifi 0000:02:00.0: 
0x18489000 | board version
  Dec 13 11:53:37 james-x1 kernel: [  857.583282] iwlwifi 0000:02:00.0: 
0x00270129 | hcmd
  Dec 13 11:53:37 james-x1 kernel: [  857.583285] iwlwifi 0000:02:00.0: 
0x00022080 | isr0
  Dec 13 11:53:37 james-x1 kernel: [  857.583289] iwlwifi 0000:02:00.0: 
0x00000000 | isr1
  Dec 13 11:53:37 james-x1 kernel: [  857.583292] iwlwifi 0000:02:00.0: 
0x08201802 | isr2
  Dec 13 11:53:37 james-x1 kernel: [  857.583296] iwlwifi 0000:02:00.0: 
0x004000C0 | isr3
  Dec 13 11:53:37 james-x1 kernel: [  857.583299] iwlwifi 0000:02:00.0: 
0x00000000 | isr4
  Dec 13 11:53:37 james-x1 kernel: [  857.583303] iwlwifi 0000:02:00.0: 
0x002601D2 | last cmd Id
  Dec 13 11:53:37 james-x1 kernel: [  857.583307] iwlwifi 0000:02:00.0: 
0x00000000 | wait_event
  Dec 13 11:53:37 james-x1 kernel: [  857.583310] iwlwifi 0000:02:00.0: 
0x000076DD | l2p_control
  Dec 13 11:53:37 james-x1 kernel: [  857.583314] iwlwifi 0000:02:00.0: 
0x00000020 | l2p_duration
  Dec 13 11:53:37 james-x1 kernel: [  857.583318] iwlwifi 0000:02:00.0: 
0x00000000 | l2p_mhvalid
  Dec 13 11:53:37 james-x1 kernel: [  857.583321] iwlwifi 0000:02:00.0: 
0x00000000 | l2p_addr_match
  Dec 13 11:53:37 james-x1 kernel: [  857.583325] iwlwifi 0000:02:00.0: 
0x0000000D | lmpm_pmg_sel
  Dec 13 11:53:37 james-x1 kernel: [  857.583328] iwlwifi 0000:02:00.0: 
0x22040707 | timestamp
  Dec 13 11:53:37 james-x1 kernel: [  857.583332] iwlwifi 0000:02:00.0: 
0x00002030 | flow_handler
  Dec 13 11:53:37 james-x1 kernel: [  857.583538] iwlwifi 0000:02:00.0: Start 
IWL Error Log Dump:
  Dec 13 11:53:37 james-x1 kernel: [  857.583543] iwlwifi 0000:02:00.0: Status: 
0x00000110, count: 7
  Dec 13 11:53:37 james-x1 kernel: [  857.583547] iwlwifi 0000:02:00.0: 
0x00000070 | ADVANCED_SYSASSERT
  Dec 13 11:53:37 james-x1 kernel: [  857.583551] iwlwifi 0000:02:00.0: 
0x00000000 | umac branchlink1
  Dec 13 11:53:37 james-x1 kernel: [  857.583555] iwlwifi 0000:02:00.0: 
0xC00868A4 | umac branchlink2
  Dec 13 11:53:37 james-x1 kernel: [  857.583558] iwlwifi 0000:02:00.0: 
0xC0083A94 | umac interruptlink1
  Dec 13 11:53:37 james-x1 kernel: [  857.583562] iwlwifi 0000:02:00.0: 
0xC0083A94 | umac interruptlink2
  Dec 13 11:53:37 james-x1 kernel: [  857.583566] iwlwifi 0000:02:00.0: 
0x00000800 | umac data1
  Dec 13 11:53:37 james-x1 kernel: [  857.583569] iwlwifi 0000:02:00.0: 
0xC0083A94 | umac data2
  Dec 13 11:53:37 james-x1 kernel: [  857.583573] iwlwifi 0000:02:00.0: 
0xDEADBEEF | umac data3
  Dec 13 11:53:37 james-x1 kernel: [  857.583577] iwlwifi 0000:02:00.0: 
0x00000024 | umac major
  Dec 13 11:53:37 james-x1 kernel: [  857.583580] iwlwifi 0000:02:00.0: 
0x7596AFD4 | umac minor
  Dec 13 11:53:37 james-x1 kernel: [  857.583584] iwlwifi 0000:02:00.0: 
0xC088628C | frame pointer
  Dec 13 11:53:37 james-x1 kernel: [  857.583587] iwlwifi 0000:02:00.0: 
0xC088628C | stack pointer
  Dec 13 11:53:37 james-x1 kernel: [  857.583591] iwlwifi 0000:02:00.0: 
0x00270129 | last host cmd
  Dec 13 11:53:37 james-x1 kernel: [  857.583595] iwlwifi 0000:02:00.0: 
0x00000000 | isr status reg
  Dec 13 11:53:37 james-x1 kernel: [  857.583600] iwlwifi 0000:02:00.0: 
Firmware error during reconfiguration - reprobe!
  Dec 13 11:53:37 james-x1 kernel: [  857.583663] iwlwifi 0000:02:00.0: iwlwifi 
transaction failed, dumping registers
  Dec 13 11:53:37 james-x1 kernel: [  857.583670] iwlwifi 0000:02:00.0: iwlwifi 
device config registers:
  Dec 13 11:53:37 james-x1 kernel: [  857.583868] iwlwifi 0000:02:00.0: 
00000000: 24fd8086 00100406 02800078 00000000 ee200004 00000000 00000000 
00000000
  Dec 13 11:53:37 james-x1 kernel: [  857.583877] iwlwifi 0000:02:00.0: 
00000020: 00000000 00000000 00000000 00108086 00000000 000000c8 00000000 
000001ff
  Dec 13 11:53:37 james-x1 kernel: [  857.583882] iwlwifi 0000:02:00.0: iwlwifi 
device memory mapped registers:
  Dec 13 11:53:37 james-x1 kernel: [  857.584080] iwlwifi 0000:02:00.0: 
00000000: 18489000 0000ff40 00000000 ba00008b 00000000 00000000 00000010 
00000000
  Dec 13 11:53:37 james-x1 kernel: [  857.584089] iwlwifi 0000:02:00.0: 
00000020: 00000000 08040005 00000230 d55555d5 d55555d5 d55555d5 80008040 
041f0042
  Dec 13 11:53:37 james-x1 kernel: [  857.584251] iwlwifi 0000:02:00.0: iwlwifi 
device AER capability structure:
  Dec 13 11:53:37 james-x1 kernel: [  857.584487] iwlwifi 0000:02:00.0: 
00000000: 14010001 00000000 00000000 00462031 00000000 00002000 00000000 
00000000
  Dec 13 11:53:37 james-x1 kernel: [  857.584493] iwlwifi 0000:02:00.0: 
00000020: 00000000 00000000 00000000
  Dec 13 11:53:37 james-x1 kernel: [  857.584500] iwlwifi 0000:02:00.0: iwlwifi 
parent port (0000:00:1c.0) config registers:
  Dec 13 11:53:37 james-x1 kernel: [  857.584532] iwlwifi 0000:00:1c.0: 
00000000: 9d108086 00100407 060400f1 00810000 00000000 00000000 00020200 
200000f0
  Dec 13 11:53:37 james-x1 kernel: [  857.584539] iwlwifi 0000:00:1c.0: 
00000020: ee20ee20 0001fff1 00000000 00000000 00000000 00000040 00000000 
000001ff
  Dec 13 11:53:37 james-x1 kernel: [  857.584546] iwlwifi 0000:02:00.0: iwlwifi 
root port (0000:00:1c.0) AER cap structure:
  Dec 13 11:53:37 james-x1 kernel: [  857.584564] iwlwifi 0000:00:1c.0: 
00000000: 14010001 00000000 00010000 00060011 00000000 00002000 00000000 
00000000
  Dec 13 11:53:37 james-x1 kernel: [  857.584571] iwlwifi 0000:00:1c.0: 
00000020: 00000000 00000000 00000000 00000000 00000000 00000000
  Dec 13 11:53:37 james-x1 kernel: [  857.584579] iwlwifi 0000:02:00.0: FW 
error in SYNC CMD TIME_EVENT_CMD
  Dec 13 11:53:37 james-x1 kernel: [  857.584589] CPU: 6 PID: 1147 Comm: 
kworker/u16:6 Tainted: G        W  OE     4.19.9-041909-generic #201812130432
  Dec 13 11:53:37 james-x1 kernel: [  857.584591] Hardware name: LENOVO 
20KHCTO1WW/20KHCTO1WW, BIOS N23ET59W (1.34 ) 11/08/2018
  Dec 13 11:53:37 james-x1 kernel: [  857.584651] Workqueue: phy7 
ieee80211_iface_work [mac80211]
  Dec 13 11:53:37 james-x1 kernel: [  857.584655] Call Trace:
  Dec 13 11:53:37 james-x1 kernel: [  857.584668]  dump_stack+0x63/0x8a
  Dec 13 11:53:37 james-x1 kernel: [  857.584700]  
iwl_pcie_send_hcmd_sync+0x4a2/0x4c0 [iwlwifi]
  Dec 13 11:53:37 james-x1 kernel: [  857.584709]  ? wait_woken+0x80/0x80
  Dec 13 11:53:37 james-x1 kernel: [  857.584728]  
iwl_trans_pcie_send_hcmd+0x33/0xd0 [iwlwifi]
  Dec 13 11:53:37 james-x1 kernel: [  857.584747]  iwl_trans_send_cmd+0x65/0xd0 
[iwlwifi]
  Dec 13 11:53:37 james-x1 kernel: [  857.584753]  ? __switch_to_asm+0x34/0x70
  Dec 13 11:53:37 james-x1 kernel: [  857.584775]  iwl_mvm_send_cmd+0x32/0x90 
[iwlmvm]
  Dec 13 11:53:37 james-x1 kernel: [  857.584793]  
iwl_mvm_send_cmd_pdu+0x51/0x70 [iwlmvm]
  Dec 13 11:53:37 james-x1 kernel: [  857.584811]  
iwl_mvm_time_event_send_add+0xf1/0x1e0 [iwlmvm]
  Dec 13 11:53:37 james-x1 kernel: [  857.584836]  ? iwl_mvm_te_notif+0xc0/0xc0 
[iwlmvm]
  Dec 13 11:53:37 james-x1 kernel: [  857.584855]  
iwl_mvm_protect_session+0x24e/0x2b0 [iwlmvm]
  Dec 13 11:53:37 james-x1 kernel: [  857.584863]  ? _cond_resched+0x19/0x30
  Dec 13 11:53:37 james-x1 kernel: [  857.584879]  
iwl_mvm_mac_mgd_prepare_tx+0x63/0x90 [iwlmvm]
  Dec 13 11:53:37 james-x1 kernel: [  857.584895]  ? 
iwl_mvm_mac_mgd_prepare_tx+0x63/0x90 [iwlmvm]
  Dec 13 11:53:37 james-x1 kernel: [  857.584946]  ieee80211_auth+0xab/0x300 
[mac80211]
  Dec 13 11:53:37 james-x1 kernel: [  857.584990]  
ieee80211_sta_work+0x4aa/0x770 [mac80211]
  Dec 13 11:53:37 james-x1 kernel: [  857.584996]  ? __switch_to_asm+0x34/0x70
  Dec 13 11:53:37 james-x1 kernel: [  857.584999]  ? __switch_to_asm+0x40/0x70
  Dec 13 11:53:37 james-x1 kernel: [  857.585003]  ? __switch_to_asm+0x34/0x70
  Dec 13 11:53:37 james-x1 kernel: [  857.585048]  
ieee80211_iface_work+0x308/0x340 [mac80211]
  Dec 13 11:53:37 james-x1 kernel: [  857.585054]  process_one_work+0x20f/0x410
  Dec 13 11:53:37 james-x1 kernel: [  857.585059]  worker_thread+0x34/0x400
  Dec 13 11:53:37 james-x1 kernel: [  857.585066]  kthread+0x120/0x140
  Dec 13 11:53:37 james-x1 kernel: [  857.585070]  ? 
pwq_unbound_release_workfn+0xd0/0xd0
  Dec 13 11:53:37 james-x1 kernel: [  857.585074]  ? kthread_bind+0x40/0x40
  Dec 13 11:53:37 james-x1 kernel: [  857.585078]  ret_from_fork+0x35/0x40
  Dec 13 11:53:37 james-x1 kernel: [  857.585150] iwlwifi 0000:02:00.0: 
Couldn't send TIME_EVENT_CMD: -5
  Dec 13 11:53:37 james-x1 kernel: [  857.585165] wlp2s0: send auth to 
60:38:e0:70:a2:11 (try 2/3)
  Dec 13 11:53:37 james-x1 kernel: [  857.585197] iwlwifi 0000:02:00.0: Failed 
to send MAC context (action:1): -5
  Dec 13 11:53:37 james-x1 kernel: [  857.585386] WARNING: CPU: 4 PID: 437 at 
net/mac80211/util.c:1972 ieee80211_reconfig+0x21b/0xf80 [mac80211]
  Dec 13 11:53:37 james-x1 kernel: [  857.585388] Modules linked in: authenc 
echainiv xfrm4_mode_transport ccm rfcomm acpi_call(OE) veth ipt_MASQUERADE 
nf_conntrack_netlink nfnetlink iptable_nat nf_nat_ipv4 xt_addrtype 
iptable_filter bpfilter xt_conntrack nf_nat nf_conntrack nf_defrag_ipv6 
nf_defrag_ipv4 libcrc32c br_netfilter bridge stp llc twofish_generic 
twofish_avx_x86_64 twofish_x86_64_3way twofish_x86_64 twofish_common 
serpent_avx2 serpent_avx_x86_64 serpent_sse2_x86_64 serpent_generic 
blowfish_generic blowfish_x86_64 blowfish_common cast5_avx_x86_64 cast5_generic 
cast_common des_generic algif_skcipher camellia_generic camellia_aesni_avx2 
camellia_aesni_avx_x86_64 camellia_x86_64 xcbc md4 algif_hash af_alg xfrm_user 
xfrm4_tunnel tunnel4 ipcomp xfrm_ipcomp esp4 ah4 af_key xfrm_algo l2tp_ppp 
l2tp_netlink l2tp_core ip6_udp_tunnel
  Dec 13 11:53:37 james-x1 kernel: [  857.585477]  udp_tunnel pppox 
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic msr overlay cmac 
bnep btusb btrtl btbcm btintel bluetooth uvcvideo ecdh_generic nls_iso8859_1 
joydev arc4 wmi_bmof intel_wmi_thunderbolt intel_rapl x86_pkg_temp_thermal 
intel_powerclamp coretemp snd_soc_skl snd_soc_skl_ipc kvm_intel snd_soc_sst_ipc 
snd_seq_dummy crct10dif_pclmul snd_soc_sst_dsp crc32_pclmul snd_seq_oss i915 
snd_hda_ext_core snd_soc_acpi_intel_match ghash_clmulni_intel snd_soc_acpi 
snd_seq_midi snd_seq_midi_event snd_soc_core pcbc snd_compress kvmgt ac97_bus 
vfio_mdev snd_pcm_dmaengine rmi_smbus mdev rmi_core vfio_iommu_type1 vfio 
videobuf2_vmalloc snd_rawmidi iwlmvm videobuf2_memops kvm videobuf2_v4l2 
aesni_intel mac80211 videobuf2_common aes_x86_64 irqbypass crypto_simd 
snd_hda_intel videodev
  Dec 13 11:53:37 james-x1 kernel: [  857.585571]  drm_kms_helper cryptd 
snd_hda_codec glue_helper snd_seq intel_cstate snd_hda_core intel_rapl_perf drm 
iwlwifi snd_hwdep i2c_algo_bit input_leds fb_sys_fops serio_raw syscopyarea 
ucsi_acpi media snd_pcm typec_ucsi thinkpad_acpi mei_me sysfillrect 
processor_thermal_device cfg80211 nvram sysimgblt mei intel_pch_thermal 
intel_soc_dts_iosf typec snd_seq_device snd_timer wmi snd int3403_thermal 
soundcore int340x_thermal_zone mac_hid video int3400_thermal acpi_pad 
acpi_thermal_rel sch_fq_codel parport_pc ppdev lp parport ip_tables x_tables 
autofs4 uas usb_storage hid_generic usbhid psmouse e1000e thunderbolt i2c_i801 
i2c_hid hid
  Dec 13 11:53:37 james-x1 kernel: [  857.585670] CPU: 4 PID: 437 Comm: 
kworker/4:2 Tainted: G        W  OE     4.19.9-041909-generic #201812130432
  Dec 13 11:53:37 james-x1 kernel: [  857.585673] Hardware name: LENOVO 
20KHCTO1WW/20KHCTO1WW, BIOS N23ET59W (1.34 ) 11/08/2018
  Dec 13 11:53:37 james-x1 kernel: [  857.585734] Workqueue: events_freezable 
ieee80211_restart_work [mac80211]
  Dec 13 11:53:37 james-x1 kernel: [  857.585781] RIP: 
0010:ieee80211_reconfig+0x21b/0xf80 [mac80211]
  Dec 13 11:53:37 james-x1 kernel: [  857.585786] Code: 0a 00 00 83 e2 fd 83 fa 
04 74 e3 49 8b 94 24 20 04 00 00 83 e2 01 74 d6 4c 89 e6 48 89 df e8 1c a2 fc 
ff 85 c0 74 c7 41 89 c6 <0f> 0b 4d 8b 64 24 08 4d 39 ec 0f 84 43 fe ff ff 41 8b 
84 24 e0 0a
  Dec 13 11:53:37 james-x1 kernel: [  857.585789] RSP: 0018:ffffaa3682f0fe08 
EFLAGS: 00010282
  Dec 13 11:53:37 james-x1 kernel: [  857.585793] RAX: 00000000fffffffb RBX: 
ffff8eea1b5e0760 RCX: 0000000000000000
  Dec 13 11:53:37 james-x1 kernel: [  857.585795] RDX: ffff8eed44f20000 RSI: 
0000000000000009 RDI: ffff8eea1b5e1548
  Dec 13 11:53:37 james-x1 kernel: [  857.585797] RBP: ffffaa3682f0fe50 R08: 
00000000fffffffb R09: 00000000000014c6
  Dec 13 11:53:37 james-x1 kernel: [  857.585799] R10: 0000000000000004 R11: 
ffffffffac3973ed R12: ffff8eebbdfe1000
  Dec 13 11:53:37 james-x1 kernel: [  857.585802] R13: ffff8eea1b5e0f90 R14: 
00000000fffffffb R15: 0ffff8eed5152880
  Dec 13 11:53:37 james-x1 kernel: [  857.585806] FS:  0000000000000000(0000) 
GS:ffff8eed51500000(0000) knlGS:0000000000000000
  Dec 13 11:53:37 james-x1 kernel: [  857.585808] CS:  0010 DS: 0000 ES: 0000 
CR0: 0000000080050033
  Dec 13 11:53:37 james-x1 kernel: [  857.585810] CR2: 00000b9fff290000 CR3: 
0000000334c0a001 CR4: 00000000003606e0
  Dec 13 11:53:37 james-x1 kernel: [  857.585813] DR0: 0000000000000000 DR1: 
0000000000000000 DR2: 0000000000000000
  Dec 13 11:53:37 james-x1 kernel: [  857.585815] DR3: 0000000000000000 DR6: 
00000000fffe0ff0 DR7: 0000000000000400
  Dec 13 11:53:37 james-x1 kernel: [  857.585816] Call Trace:
  Dec 13 11:53:37 james-x1 kernel: [  857.585862]  
ieee80211_restart_work+0xbc/0xf0 [mac80211]
  Dec 13 11:53:37 james-x1 kernel: [  857.585871]  process_one_work+0x20f/0x410
  Dec 13 11:53:37 james-x1 kernel: [  857.585876]  worker_thread+0x34/0x400
  Dec 13 11:53:37 james-x1 kernel: [  857.585882]  kthread+0x120/0x140
  Dec 13 11:53:37 james-x1 kernel: [  857.585885]  ? 
pwq_unbound_release_workfn+0xd0/0xd0
  Dec 13 11:53:37 james-x1 kernel: [  857.585890]  ? kthread_bind+0x40/0x40
  Dec 13 11:53:37 james-x1 kernel: [  857.585897]  ret_from_fork+0x35/0x40
  Dec 13 11:53:37 james-x1 kernel: [  857.585902] ---[ end trace 
b6d584c3a4a887c5 ]---
  Dec 13 11:53:37 james-x1 kernel: [  857.586005] iwlwifi 0000:02:00.0: Failed 
to remove MAC context: -5
  Dec 13 11:53:37 james-x1 kernel: [  857.586121] ------------[ cut here 
]------------

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