Comment 12 for bug 1882419

Also began happening for me, starting a week ago (but no apparent cause). Ubuntu 20.04, 5.4.0-42-generic, Intel NUC. Same symptom of wildly scrolling kernel log, eventually fills the disk.

Aug 19 04:59:23 skully kernel: [67510.402179] ------------[ cut here ]------------
Aug 19 04:59:23 skully kernel: [67510.402182] wlp3s0: Failed check-sdata-in-driver check, flags: 0x0
Aug 19 04:59:23 skully kernel: [67510.402208] WARNING: CPU: 2 PID: 11396 at net/mac80211/driver-ops.h:17 drv_sta_state+0x254/0x3f0 [mac80211]
Aug 19 04:59:23 skully kernel: [67510.402210] Modules linked in: rfcomm cmac algif_hash algif_skcipher af_alg bnep snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio binfmt_misc intel_rapl_msr intel_rapl_common x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm mei_hdcp crct10dif_pclmul ghash_clmulni_intel snd_hda_intel snd_intel_dspcfg snd_hda_codec snd_hda_core snd_usb_audio snd_usbmidi_lib snd_hwdep aesni_intel snd_seq_midi iwlmvm crypto_simd snd_seq_midi_event cryptd glue_helper intel_cstate mac80211 uvcvideo videobuf2_vmalloc intel_rapl_perf videobuf2_memops libarc4 snd_rawmidi videobuf2_v4l2 videobuf2_common iwlwifi snd_pcm snd_seq videodev btusb snd_seq_device i915 mc joydev input_leds btrtl snd_timer btbcm intel_wmi_thunderbolt btintel snd bluetooth cfg80211 mei_me drm_kms_helper soundcore mei i2c_algo_bit intel_pch_thermal ecdh_generic fb_sys_fops ecc syscopyarea sysfillrect sysimgblt ir_rc6_decoder rc_rc6_mce nuvoton_cir rc_core acpi_pad mac_hid sch_fq_codel parport_pc ppdev lp
Aug 19 04:59:23 skully kernel: [67510.402254] parport drm ip_tables x_tables autofs4 hid_generic usbhid hid crc32_pclmul e1000e sdhci_pci ahci cqhci i2c_i801 sdhci libahci wmi video
Aug 19 04:59:23 skully kernel: [67510.402257] CPU: 2 PID: 11396 Comm: kworker/u16:2 Tainted: G W 5.4.0-42-generic #46-Ubuntu
Aug 19 04:59:23 skully kernel: [67510.402258] Hardware name: /NUC6i7KYB, BIOS KYSKLi70.86A.0059.2018.1122.1431 11/22/2018
Aug 19 04:59:23 skully kernel: [67510.402272] Workqueue: phy0 ieee80211_csa_connection_drop_work [mac80211]
Aug 19 04:59:23 skully kernel: [67510.402286] RIP: 0010:drv_sta_state+0x254/0x3f0 [mac80211]
Aug 19 04:59:23 skully kernel: [67510.402288] Code: 00 45 31 ed e9 66 fe ff ff 48 8b 83 78 04 00 00 48 8d b3 98 04 00 00 48 c7 c7 c8 68 a1 c0 48 85 c0 48 0f 45 f0 e8 57 c1 10 f6 <0f> 0b 41 bd fb ff ff ff e9 3d fe ff ff 65 8b 05 e8 ac 67 3f 89 c0
Aug 19 04:59:23 skully kernel: [67510.402288] RSP: 0018:ffffad69c7a9bc98 EFLAGS: 00010282
Aug 19 04:59:23 skully kernel: [67510.402289] RAX: 0000000000000000 RBX: ffff8da4176488c0 RCX: 0000000000000006
Aug 19 04:59:23 skully kernel: [67510.402290] RDX: 0000000000000007 RSI: 0000000000000082 RDI: ffff8da41ea978c0
Aug 19 04:59:23 skully kernel: [67510.402291] RBP: ffffad69c7a9bcd0 R08: 00000000509a06a0 R09: 0000000000000004
Aug 19 04:59:23 skully kernel: [67510.402291] R10: 0000000000000000 R11: 0000000000000001 R12: ffff8da4176b07a0
Aug 19 04:59:23 skully kernel: [67510.402291] R13: ffff8da4176b07a0 R14: 0000000000000004 R15: ffff8da4176b0d68
Aug 19 04:59:23 skully kernel: [67510.402292] FS: 0000000000000000(0000) GS:ffff8da41ea80000(0000) knlGS:0000000000000000
Aug 19 04:59:23 skully kernel: [67510.402293] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Aug 19 04:59:23 skully kernel: [67510.402293] CR2: 00007f81f39aa028 CR3: 000000033560a005 CR4: 00000000003606e0
Aug 19 04:59:23 skully kernel: [67510.402294] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Aug 19 04:59:23 skully kernel: [67510.402294] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Aug 19 04:59:23 skully kernel: [67510.402295] Call Trace:
Aug 19 04:59:23 skully kernel: [67510.402304] sta_info_move_state+0x276/0x370 [mac80211]
Aug 19 04:59:23 skully kernel: [67510.402319] __sta_info_destroy_part2+0x2f/0x180 [mac80211]
Aug 19 04:59:23 skully kernel: [67510.402334] __sta_info_flush+0x128/0x180 [mac80211]
Aug 19 04:59:23 skully kernel: [67510.402349] ieee80211_set_disassoc+0xc0/0x5f0 [mac80211]
Aug 19 04:59:23 skully kernel: [67510.402354] ? _raw_spin_unlock_bh+0x1e/0x20
Aug 19 04:59:23 skully kernel: [67510.402369] __ieee80211_disconnect+0x86/0x120 [mac80211]
Aug 19 04:59:23 skully kernel: [67510.402380] ieee80211_csa_connection_drop_work+0x15/0x20 [mac80211]
Aug 19 04:59:23 skully kernel: [67510.402383] process_one_work+0x1eb/0x3b0
Aug 19 04:59:23 skully kernel: [67510.402387] worker_thread+0x4d/0x400
Aug 19 04:59:23 skully kernel: [67510.402391] kthread+0x104/0x140
Aug 19 04:59:23 skully kernel: [67510.402394] ? process_one_work+0x3b0/0x3b0
Aug 19 04:59:23 skully kernel: [67510.402397] ? kthread_park+0x90/0x90
Aug 19 04:59:23 skully kernel: [67510.402400] ret_from_fork+0x35/0x40
Aug 19 04:59:23 skully kernel: [67510.402403] ---[ end trace f0619759527e8d71 ]---

In all cases it seems to be related to disconnection/deassociation?