Thanks for taking the time to report this bug and helping to make Ubuntu
better. We appreciate the difficulties you are facing, but this appears
to be a "regular" (non-security) bug.  I have unmarked it as a security
issue since this bug does not show evidence of allowing attackers to
cross privilege boundaries nor directly cause loss of data/privacy.
Please feel free to report any other bugs you may find.

** Information type changed from Private Security to Public

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https://bugs.launchpad.net/bugs/1834549

Title:
  Wifi won't load

Status in linux package in Ubuntu:
  New

Bug description:
  To me this looks different from:
  1. https://lkml.org/lkml/2019/4/11/861
  2. https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1537183

  version.log: Ubuntu 4.18.0-22.23~18.04.1-generic 4.18.20

  00:14.3 Network controller: Intel Corporation Wireless-AC 9560
  [Jefferson Peak] (rev 10)

  /var/log/kern.log:
  ...
  Jun 27 15:03:41 user-ThinkPad-P52 kernel: [274383.172489] CPU5: Package 
temperature/speed normal
  Jun 27 15:10:04 user-ThinkPad-P52 kernel: [274765.973921] thinkpad_acpi: 
unhandled HKEY event 0x6031
  Jun 27 15:10:04 user-ThinkPad-P52 kernel: [274765.973924] thinkpad_acpi: 
please report the conditions when this event happened to 
ibm-acpi-de...@lists.sourceforge.net
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.439876] iwlwifi 
0000:00:14.3: Error sending STATISTICS_CMD: time out after 2000ms.
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.439892] iwlwifi 
0000:00:14.3: Current CMD queue read_ptr 10 write_ptr 11
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440076] iwlwifi 
0000:00:14.3: Start IWL Error Log Dump:
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440084] iwlwifi 
0000:00:14.3: Status: 0x00000100, count: 6
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440090] iwlwifi 
0000:00:14.3: Loaded firmware version: 38.c0e03d94.0
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440096] iwlwifi 
0000:00:14.3: 0x00000034 | NMI_INTERRUPT_WDG           
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440102] iwlwifi 
0000:00:14.3: 0x000022F0 | trm_hw_status0
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440107] iwlwifi 
0000:00:14.3: 0x00000000 | trm_hw_status1
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440112] iwlwifi 
0000:00:14.3: 0x00454EAA | branchlink2
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440118] iwlwifi 
0000:00:14.3: 0x0045E8C2 | interruptlink1
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440123] iwlwifi 
0000:00:14.3: 0x0000E630 | interruptlink2
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440128] iwlwifi 
0000:00:14.3: 0x00000000 | data1
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440133] iwlwifi 
0000:00:14.3: 0x000003FF | data2
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440138] iwlwifi 
0000:00:14.3: 0x000003FF | data3
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440144] iwlwifi 
0000:00:14.3: 0x6AC0A6B1 | beacon time
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440149] iwlwifi 
0000:00:14.3: 0xD15FB958 | tsf low
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440155] iwlwifi 
0000:00:14.3: 0x0000002C | tsf hi
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440160] iwlwifi 
0000:00:14.3: 0x00000000 | time gp1
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440166] iwlwifi 
0000:00:14.3: 0xF36C18D6 | time gp2
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440171] iwlwifi 
0000:00:14.3: 0x00000001 | uCode revision type
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440176] iwlwifi 
0000:00:14.3: 0x00000026 | uCode version major
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440181] iwlwifi 
0000:00:14.3: 0xC0E03D94 | uCode version minor
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440187] iwlwifi 
0000:00:14.3: 0x00000312 | hw version
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440192] iwlwifi 
0000:00:14.3: 0x00489008 | board version
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440197] iwlwifi 
0000:00:14.3: 0x0A69001C | hcmd
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440203] iwlwifi 
0000:00:14.3: 0x22822002 | isr0
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440208] iwlwifi 
0000:00:14.3: 0x00800000 | isr1
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440213] iwlwifi 
0000:00:14.3: 0x08005802 | isr2
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440218] iwlwifi 
0000:00:14.3: 0x4040BDC3 | isr3
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440223] iwlwifi 
0000:00:14.3: 0x00000000 | isr4
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440229] iwlwifi 
0000:00:14.3: 0x0A68001C | last cmd Id
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440235] iwlwifi 
0000:00:14.3: 0x00000000 | wait_event
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440240] iwlwifi 
0000:00:14.3: 0x00000000 | l2p_control
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440245] iwlwifi 
0000:00:14.3: 0x00000020 | l2p_duration
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440250] iwlwifi 
0000:00:14.3: 0x00000000 | l2p_mhvalid
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440256] iwlwifi 
0000:00:14.3: 0x00000000 | l2p_addr_match
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440261] iwlwifi 
0000:00:14.3: 0x0000000D | lmpm_pmg_sel
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440266] iwlwifi 
0000:00:14.3: 0x28031621 | timestamp
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440272] iwlwifi 
0000:00:14.3: 0x0034504C | flow_handler
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440342] iwlwifi 
0000:00:14.3: Start IWL Error Log Dump:
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440348] iwlwifi 
0000:00:14.3: Status: 0x00000100, count: 7
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440355] iwlwifi 
0000:00:14.3: 0x00000066 | NMI_INTERRUPT_HOST
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440361] iwlwifi 
0000:00:14.3: 0x00000000 | umac branchlink1
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440366] iwlwifi 
0000:00:14.3: 0xC0087C80 | umac branchlink2
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440371] iwlwifi 
0000:00:14.3: 0xC00839F8 | umac interruptlink1
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440377] iwlwifi 
0000:00:14.3: 0xC00839F8 | umac interruptlink2
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440382] iwlwifi 
0000:00:14.3: 0x01000000 | umac data1
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440387] iwlwifi 
0000:00:14.3: 0xC00839F8 | umac data2
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440392] iwlwifi 
0000:00:14.3: 0xDEADBEEF | umac data3
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440398] iwlwifi 
0000:00:14.3: 0x00000026 | umac major
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440403] iwlwifi 
0000:00:14.3: 0xC0E03D94 | umac minor
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440409] iwlwifi 
0000:00:14.3: 0xC0886298 | frame pointer
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440414] iwlwifi 
0000:00:14.3: 0xC0886298 | stack pointer
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440419] iwlwifi 
0000:00:14.3: 0x000A019C | last host cmd
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440424] iwlwifi 
0000:00:14.3: 0x00000000 | isr status reg
  Jun 27 16:20:13 user-ThinkPad-P52 kernel: [278975.440434] ieee80211 phy0: 
Hardware restart was requested
  Jun 27 16:20:14 user-ThinkPad-P52 kernel: [278976.719763] iwlwifi 
0000:00:14.3: SecBoot CPU1 Status: 0x3, CPU2 Status: 0x240f
  Jun 27 16:20:14 user-ThinkPad-P52 kernel: [278976.719771] iwlwifi 
0000:00:14.3: Failed to start INIT ucode: -110
  Jun 27 16:20:14 user-ThinkPad-P52 kernel: [278976.719775] iwlwifi 
0000:00:14.3: Failed to run INIT ucode: -110
  Jun 27 16:20:14 user-ThinkPad-P52 kernel: [278976.719779] iwlwifi 
0000:00:14.3: Failed to start RT ucode: -110
  Jun 27 16:20:14 user-ThinkPad-P52 kernel: [278976.731836] ------------[ cut 
here ]------------
  Jun 27 16:20:14 user-ThinkPad-P52 kernel: [278976.731839] Hardware became 
unavailable during restart.
  Jun 27 16:20:14 user-ThinkPad-P52 kernel: [278976.731955] WARNING: CPU: 5 
PID: 30555 at /build/linux-hwe-wH0uOW/linux-hwe-4.18.0/net/mac80211/util.c:1907 
ieee80211_reconfig+0x226/0xfd0 [mac80211]
  Jun 27 16:20:14 user-ThinkPad-P52 kernel: [278976.731957] Modules linked in: 
ipheth btrfs zstd_compress xor raid6_pq ufs qnx4 hfsplus hfs minix ntfs msdos 
jfs xfs cpuid veth nvidia_uvm(OE) rfcomm nvidia_drm(POE) nvidia_modeset(POE) 
nvidia(POE) ipmi_devintf ipmi_msghandler vfio_iommu_type1 vfio ipt_MASQUERADE 
nf_conntrack_netlink nfnetlink xfrm_user xfrm_algo iptable_nat 
nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 xt_addrtype iptable_filter 
bpfilter xt_conntrack nf_nat nf_conntrack libcrc32c br_netfilter bridge stp llc 
ccm thunderbolt aufs overlay cmac bnep binfmt_misc nls_iso8859_1 arc4 
snd_hda_codec_hdmi 8250_dw wmi_bmof intel_wmi_thunderbolt snd_hda_codec_realtek 
snd_hda_codec_generic intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp 
kvm_intel kvm iwlmvm irqbypass crct10dif_pclmul crc32_pclmul 
ghash_clmulni_intel mac80211 pcbc uvcvideo
  Jun 27 16:20:14 user-ThinkPad-P52 kernel: [278976.732067]  i915 
videobuf2_vmalloc aesni_intel snd_seq_midi aes_x86_64 crypto_simd 
snd_seq_midi_event cryptd snd_hda_intel glue_helper videobuf2_memops 
intel_cstate snd_rawmidi iwlwifi btusb videobuf2_v4l2 intel_rapl_perf 
snd_hda_codec btrtl drm_kms_helper btbcm videobuf2_common snd_hda_core btintel 
snd_hwdep bluetooth serio_raw videodev drm snd_seq media thinkpad_acpi snd_pcm 
idma64 cfg80211 nvram ecdh_generic mei_me virt_dma i2c_algo_bit ucsi_acpi 
fb_sys_fops rtsx_pci_ms syscopyarea joydev typec_ucsi input_leds memstick mei 
intel_lpss_pci processor_thermal_device snd_seq_device sysfillrect intel_lpss 
intel_pch_thermal sysimgblt typec intel_soc_dts_iosf snd_timer wmi snd 
int3403_thermal int340x_thermal_zone soundcore acpi_pad video int3400_thermal 
acpi_thermal_rel mac_hid sch_fq_codel parport_pc
  Jun 27 16:20:14 user-ThinkPad-P52 kernel: [278976.732174]  ppdev lp parport 
ip_tables x_tables autofs4 hid_generic usbhid hid rtsx_pci_sdmmc nvme e1000e 
psmouse nvme_core rtsx_pci pinctrl_cannonlake pinctrl_intel [last unloaded: 
ipmi_msghandler]
  Jun 27 16:20:14 user-ThinkPad-P52 kernel: [278976.732209] CPU: 5 PID: 30555 
Comm: kworker/5:0 Tainted: P           OE     4.18.0-22-generic 
#23~18.04.1-Ubuntu
  Jun 27 16:20:14 user-ThinkPad-P52 kernel: [278976.732211] Hardware name: 
LENOVO 20M9000FUS/20M9000FUS, BIOS N2CET41W (1.24 ) 03/18/2019
  Jun 27 16:20:14 user-ThinkPad-P52 kernel: [278976.732241] Workqueue: 
events_freezable ieee80211_restart_work [mac80211]
  Jun 27 16:20:14 user-ThinkPad-P52 kernel: [278976.732270] RIP: 
0010:ieee80211_reconfig+0x226/0xfd0 [mac80211]
  Jun 27 16:20:14 user-ThinkPad-P52 kernel: [278976.732271] Code: c6 45 d6 00 
c6 83 94 04 00 00 00 48 89 df e8 61 ac fc ff 85 c0 41 89 c7 0f 84 30 01 00 00 
48 c7 c7 28 a5 1c c1 e8 1a c9 d0 f5 <0f> 0b 48 89 df e8 60 dc ff ff eb b0 c6 83 
95 04 00 00 00 4c 8d a3 
  Jun 27 16:20:14 user-ThinkPad-P52 kernel: [278976.732323] RSP: 
0018:ffffb94f087ffe08 EFLAGS: 00010282
  Jun 27 16:20:14 user-ThinkPad-P52 kernel: [278976.732326] RAX: 
0000000000000000 RBX: ffff8d0c49144760 RCX: 0000000000000006
  Jun 27 16:20:14 user-ThinkPad-P52 kernel: [278976.732328] RDX: 
0000000000000007 RSI: 0000000000000092 RDI: ffff8d0c4ef564b0
  Jun 27 16:20:14 user-ThinkPad-P52 kernel: [278976.732329] RBP: 
ffffb94f087ffe50 R08: 0000000000000a6f R09: 0000000000000004
  Jun 27 16:20:14 user-ThinkPad-P52 kernel: [278976.732331] R10: 
0000000000000000 R11: 0000000000000001 R12: ffff8d0c491453a0
  Jun 27 16:20:14 user-ThinkPad-P52 kernel: [278976.732333] R13: 
ffff8d0c49144760 R14: ffff8d0c49144f90 R15: 00000000ffffff92
  Jun 27 16:20:14 user-ThinkPad-P52 kernel: [278976.732335] FS:  
0000000000000000(0000) GS:ffff8d0c4ef40000(0000) knlGS:0000000000000000
  Jun 27 16:20:14 user-ThinkPad-P52 kernel: [278976.732337] CS:  0010 DS: 0000 
ES: 0000 CR0: 0000000080050033
  Jun 27 16:20:14 user-ThinkPad-P52 kernel: [278976.732339] CR2: 
0000176c1aa43000 CR3: 0000000208e0a005 CR4: 00000000003606e0
  Jun 27 16:20:14 user-ThinkPad-P52 kernel: [278976.732341] Call Trace:
  Jun 27 16:20:14 user-ThinkPad-P52 kernel: [278976.732364]  
ieee80211_restart_work+0xc0/0xf0 [mac80211]
  Jun 27 16:20:14 user-ThinkPad-P52 kernel: [278976.732371]  
process_one_work+0x1fd/0x3f0
  Jun 27 16:20:14 user-ThinkPad-P52 kernel: [278976.732376]  
worker_thread+0x34/0x410
  Jun 27 16:20:14 user-ThinkPad-P52 kernel: [278976.732380]  kthread+0x121/0x140
  Jun 27 16:20:14 user-ThinkPad-P52 kernel: [278976.732384]  ? 
process_one_work+0x3f0/0x3f0
  Jun 27 16:20:14 user-ThinkPad-P52 kernel: [278976.732388]  ? 
kthread_create_worker_on_cpu+0x70/0x70
  Jun 27 16:20:14 user-ThinkPad-P52 kernel: [278976.732393]  
ret_from_fork+0x35/0x40
  Jun 27 16:20:14 user-ThinkPad-P52 kernel: [278976.732396] ---[ end trace 
bad90804532ab35b ]---
  Jun 27 16:20:14 user-ThinkPad-P52 kernel: [278976.732421] wlp0s20f3: 
deauthenticating from d0:17:c2:de:cf:00 by local choice (Reason: 
3=DEAUTH_LEAVING)
  Jun 27 16:20:14 user-ThinkPad-P52 kernel: [278976.732426] ------------[ cut 
here ]------------
  ....

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