I got this in /var/log/messages today:

kernel: [71484.830633] iwlwifi 0000:02:00.0: RF_KILL bit toggled to disable
radio.
kernel: [71484.830638] iwlwifi 0000:02:00.0: reporting RF_KILL (radio disabled)
kernel: [71484.833061] wlp2s0: deauthenticating from 14:0c:76:f6:ed:bc by local
choice (Reason: 3=DEAUTH_LEAVING)
kernel: [71484.833474] ------------[ cut here ]------------
kernel: [71484.833478] TX on unused queue 5
kernel: [71484.833575] WARNING: CPU: 5 PID: 1529 at
drivers/net/wireless/intel/iwlwifi/pcie/tx.c:2343 iwl_trans_pcie_tx+0x62d/0x760
[iwlwifi]
kernel: [71484.833576] Modules linked in: thunderbolt ccm hid_microsoft
ff_memless hid_plantronics snd_usb_audio snd_usbmidi_lib usbhid snd_rawmidi
snd_seq_device bnep fuse uvcvideo videobuf2_vmalloc videobuf2_memops
videobuf2_v4l2 videobuf2_common videodev media af_packet typec_displayport
xt_tcpudp ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 ipt_REJECT nf_reject_ipv4
xt_conntrack ebtable_nat ip6table_nat ip6table_mangle ip6table_raw
ip6table_security iptable_nat nf_nat iptable_mangle iptable_raw
iptable_security nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip_set nfnetlink
ebtable_filter ebtables scsi_transport_iscsi ip6table_filter ip6_tables
iptable_filter ip_tables x_tables bpfilter joydev btusb btrtl btbcm btintel
bluetooth hid_multitouch ecdh_generic hid_generic ecc arc4 msr iTCO_wdt
iTCO_vendor_support snd_hda_codec_hdmi dell_rbtn mei_wdt mei_hdcp intel_rapl
x86_pkg_temp_thermal intel_powerclamp iwlmvm coretemp kvm_intel kvm mac80211
snd_soc_skl irqbypass snd_soc_hdac_hda snd_hda_codec_realtek
kernel: [71484.833627]  snd_hda_ext_core snd_soc_skl_ipc snd_soc_sst_ipc
snd_hda_codec_generic snd_soc_sst_dsp snd_soc_acpi_intel_match snd_soc_acpi
snd_soc_core snd_compress snd_pcm_dmaengine iwlwifi dell_laptop ledtrig_audio
snd_hda_intel snd_hda_codec dell_smm_hwmon dell_wmi snd_hda_core dell_smbios
e1000e dcdbas crct10dif_pclmul snd_hwdep crc32_pclmul cfg80211 snd_pcm pcspkr
ptp ghash_clmulni_intel snd_timer ucsi_acpi snd mei_me processor_thermal_device
rtsx_pci_ms typec_ucsi intel_xhci_usb_role_switch idma64 dell_wmi_descriptor
intel_wmi_thunderbolt wmi_bmof soundcore i2c_i801 pps_core rfkill memstick mei
roles typec intel_lpss_pci intel_pch_thermal intel_soc_dts_iosf thermal
intel_lpss_acpi intel_lpss int3400_thermal intel_hid acpi_pad battery
int3403_thermal acpi_thermal_rel int340x_thermal_zone sparse_keymap ac
pcc_cpufreq button aesni_intel crypto_simd cryptd glue_helper aes_x86_64
dm_crypt nls_iso8859_1 nls_cp437 vfat fat btrfs libcrc32c xor i915 raid6_pq
rtsx_pci_sdmmc mmc_core
kernel: [71484.833683]  i2c_algo_bit drm_kms_helper syscopyarea sysfillrect
serio_raw sysimgblt xhci_pci fb_sys_fops xhci_hcd crc32c_intel drm usbcore
rtsx_pci wmi i2c_hid video sg dm_multipath dm_mod scsi_dh_rdac scsi_dh_emc
scsi_dh_alua ecryptfs efivarfs
kernel: [71484.833707] CPU: 5 PID: 1529 Comm: kworker/5:2 Not tainted
5.2.3-1-default #1 openSUSE Tumbleweed (unreleased)
kernel: [71484.833710] Hardware name: Dell Inc. Latitude 7290/09386V, BIOS
1.11.0 07/04/2019
kernel: [71484.833768] Workqueue: events cfg80211_rfkill_sync_work [cfg80211]
kernel: [71484.833788] RIP: 0010:iwl_trans_pcie_tx+0x62d/0x760 [iwlwifi]
kernel: [71484.833793] Code: 42 4a 03 00 00 b8 ea ff ff ff 0f 85 e7 fc ff ff 44
89 ee 48 c7 c7 40 9d da c0 89 44 24 04 c6 05 22 4a 03 00 01 e8 52 b3 10 e8 <0f>
0b 8b 44 24 04 e9 c2 fc ff ff 41 0f b6 86 80 00 00 00 83 e0 60
kernel: [71484.833795] RSP: 0018:ffffb85d58917898 EFLAGS: 00010292
kernel: [71484.833798] RAX: 0000000000000014 RBX: ffff9523a9350898 RCX:
0000000000000006
kernel: [71484.833800] RDX: 0000000000000007 RSI: 0000000000000082 RDI:
ffff9523ee359a10
kernel: [71484.833802] RBP: ffff9523dae21628 R08: 0000000000000548 R09:
0000000000000001
kernel: [71484.833804] R10: 0000000000000000 R11: 0000000000000001 R12:
ffff9523dbb783e8
kernel: [71484.833806] R13: 0000000000000005 R14: 00000000000000c0 R15:
0000000000000008
kernel: [71484.833809] FS:  0000000000000000(0000) GS:ffff9523ee340000(0000)
knlGS:0000000000000000
kernel: [71484.833811] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
kernel: [71484.833813] CR2: 00007f7fe2353000 CR3: 000000030de0a006 CR4:
00000000003606e0
kernel: [71484.833815] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
kernel: [71484.833817] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
kernel: [71484.833819] Call Trace:
kernel: [71484.833851]  iwl_mvm_tx_mpdu+0x1e9/0x5a0 [iwlmvm]
kernel: [71484.833872]  iwl_mvm_tx_skb+0x196/0x440 [iwlmvm]
kernel: [71484.833890]  iwl_mvm_mac_itxq_xmit+0x7d/0xe0 [iwlmvm]
kernel: [71484.833953]  ieee80211_queue_skb+0x2b4/0x420 [mac80211]
kernel: [71484.833996]  ieee80211_tx+0xb5/0x120 [mac80211]
kernel: [71484.834035]  __ieee80211_tx_skb_tid_band+0x72/0x90 [mac80211]
kernel: [71484.834075]  ieee80211_send_deauth_disassoc+0x100/0x120 [mac80211]
kernel: [71484.834117]  ieee80211_set_disassoc+0x376/0x590 [mac80211]
kernel: [71484.834127]  ? __switch_to_asm+0x34/0x70
kernel: [71484.834184]  ieee80211_mgd_deauth.cold+0x4a/0x1b8 [mac80211]
kernel: [71484.834226]  cfg80211_mlme_deauth+0x9f/0x1b0 [cfg80211]
kernel: [71484.834263]  cfg80211_mlme_down+0x56/0x60 [cfg80211]
kernel: [71484.834298]  cfg80211_disconnect+0x129/0x1e0 [cfg80211]
kernel: [71484.834325]  cfg80211_leave+0x27/0x40 [cfg80211]
kernel: [71484.834352]  cfg80211_netdev_notifier_call+0x17d/0x4c0 [cfg80211]
kernel: [71484.834361]  ? swake_up_one+0x28/0x40
kernel: [71484.834366]  ? __schedule+0x5b9/0x6a0
kernel: [71484.834372]  ? inetdev_event+0x46/0x560
kernel: [71484.834381]  notifier_call_chain+0x4c/0x70
kernel: [71484.834387]  __dev_close_many+0x4f/0xf0
kernel: [71484.834391]  dev_close_many+0x7d/0x120
kernel: [71484.834395]  dev_close.part.0+0x34/0x50
kernel: [71484.834421]  cfg80211_shutdown_all_interfaces+0x71/0xd0 [cfg80211]
kernel: [71484.834447]  cfg80211_rfkill_sync_work+0x29/0x30 [cfg80211]
kernel: [71484.834453]  process_one_work+0x1df/0x3c0
kernel: [71484.834459]  worker_thread+0x4d/0x400
kernel: [71484.834464]  kthread+0xf9/0x130
kernel: [71484.834469]  ? process_one_work+0x3c0/0x3c0
kernel: [71484.834472]  ? kthread_park+0x80/0x80
kernel: [71484.834479]  ret_from_fork+0x3a/0x50
kernel: [71484.834484] ---[ end trace 956c72fd46e4971b ]---
systemd[1]: Starting Load/Save RF Kill Switch Status...


I stumbled upon this by accident, and don't remember the context, but
apparently I disabled wifi...