Comment 27 for bug 1881214

Same issue here. Ubuntu 20.04 fully updated running on a Dell Latitude 5590. Started after VPN connection over wifi. It works ok sometime and then VPN and network stopped working in this case. Changing to cabled connection just in case meanwhile the issue gets solved.

Pasting repeated log just in case (few lines):

Jul 13 12:02:15 ipaz-Latitude-5590 kernel: [ 9218.989816] wlp2s0: Failed check-sdata-in-driver check, flags: 0x0
Jul 13 12:02:15 ipaz-Latitude-5590 kernel: [ 9218.989848] WARNING: CPU: 3 PID: 21572 at net/mac80211/driver-ops.h:17 drv_sta_state+0x254/0x3
f0 [mac80211]
Jul 13 12:02:15 ipaz-Latitude-5590 kernel: [ 9218.989848] Modules linked in: rfcomm xt_conntrack xt_MASQUERADE nf_conntrack_netlink nfnetlin
k xfrm_user xfrm_algo xt_addrtype iptable_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c br_netfilter bridge stp llc ccm ip
6table_filter ip6_tables iptable_filter bpfilter cmac algif_hash algif_skcipher af_alg aufs bnep overlay snd_hda_codec_hdmi mei_hdcp intel_r
apl_msr dell_rbtn snd_hda_codec_realtek snd_hda_codec_generic x86_pkg_temp_thermal intel_powerclamp nls_iso8859_1 snd_hda_intel coretemp snd
_intel_dspcfg kvm_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm kvm snd_seq_midi snd_seq_midi_event snd_rawmidi crct10dif_pclmul ghash_
clmulni_intel uvcvideo dell_laptop ledtrig_audio dell_smm_hwmon videobuf2_vmalloc snd_seq aesni_intel joydev dell_wmi crypto_simd dell_smbio
s dcdbas snd_seq_device iwlmvm cryptd videobuf2_memops glue_helper mac80211 intel_cstate snd_timer intel_rapl_perf videobuf2_v4l2 libarc4 bt
usb videobuf2_common input_leds btrtl btbcm i915 iwlwifi btintel
Jul 13 12:02:15 ipaz-Latitude-5590 kernel: [ 9218.989879] videodev bluetooth snd serio_raw intel_wmi_thunderbolt mc dell_wmi_descriptor wmi
_bmof ecdh_generic rtsx_pci_ms soundcore cfg80211 hid_multitouch ecc memstick mei_me drm_kms_helper mei processor_thermal_device i2c_algo_bi
t intel_rapl_common ucsi_acpi fb_sys_fops intel_xhci_usb_role_switch typec_ucsi syscopyarea sysfillrect intel_soc_dts_iosf roles sysimgblt i
ntel_pch_thermal typec int3400_thermal acpi_thermal_rel mac_hid dell_smo8800 int3403_thermal int340x_thermal_zone intel_hid acpi_pad sparse_
keymap sch_fq_codel parport_pc ppdev lp parport drm ip_tables x_tables autofs4 hid_generic rtsx_pci_sdmmc crc32_pclmul nvme intel_lpss_pci i
ntel_lpss e1000e i2c_i801 ahci idma64 i2c_hid nvme_core rtsx_pci libahci virt_dma wmi hid video
Jul 13 12:02:15 ipaz-Latitude-5590 kernel: [ 9218.989908] CPU: 3 PID: 21572 Comm: kworker/u8:3 Tainted: G W 5.4.0-40-generic
#44-Ubuntu
Jul 13 12:02:15 ipaz-Latitude-5590 kernel: [ 9218.989908] Hardware name: Dell Inc. Latitude 5590/0PF5TR, BIOS 1.12.1 11/08/2019
Jul 13 12:02:15 ipaz-Latitude-5590 kernel: [ 9218.989917] Workqueue: phy0 ieee80211_csa_connection_drop_work [mac80211]
Jul 13 12:02:15 ipaz-Latitude-5590 kernel: [ 9218.989926] RIP: 0010:drv_sta_state+0x254/0x3f0 [mac80211]
Jul 13 12:02:15 ipaz-Latitude-5590 kernel: [ 9218.989927] 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 c
7 c8 b8 b7 c0 48 85 c0 48 0f 45 f0 e8 57 71 ba f3 <0f> 0b 41 bd fb ff ff ff e9 3d fe ff ff 65 8b 05 e8 5c 51 3f 89 c0
Jul 13 12:02:15 ipaz-Latitude-5590 kernel: [ 9218.989927] RSP: 0018:ffffa8344385fc98 EFLAGS: 00010282
Jul 13 12:02:15 ipaz-Latitude-5590 kernel: [ 9218.989928] RAX: 0000000000000000 RBX: ffff9c3c93d348c0 RCX: 0000000000000006
Jul 13 12:02:15 ipaz-Latitude-5590 kernel: [ 9218.989928] RDX: 0000000000000007 RSI: 0000000000000082 RDI: ffff9c3c9e3978c0
Jul 13 12:02:15 ipaz-Latitude-5590 kernel: [ 9218.989929] RBP: ffffa8344385fcd0 R08: 00000000040d87ca R09: 0000000000000004
Jul 13 12:02:15 ipaz-Latitude-5590 kernel: [ 9218.989929] R10: 0000000000000000 R11: 0000000000000001 R12: ffff9c3c99ba07a0
Jul 13 12:02:15 ipaz-Latitude-5590 kernel: [ 9218.989930] R13: ffff9c3c99ba07a0 R14: 0000000000000004 R15: ffff9c3c99ba0d68
Jul 13 12:02:15 ipaz-Latitude-5590 kernel: [ 9218.989930] FS: 0000000000000000(0000) GS:ffff9c3c9e380000(0000) knlGS:0000000000000000
Jul 13 12:02:15 ipaz-Latitude-5590 kernel: [ 9218.989931] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Jul 13 12:02:15 ipaz-Latitude-5590 kernel: [ 9218.989931] CR2: 00007f217f6163c0 CR3: 00000001ba00a002 CR4: 00000000003606e0
Jul 13 12:02:15 ipaz-Latitude-5590 kernel: [ 9218.989932] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Jul 13 12:02:15 ipaz-Latitude-5590 kernel: [ 9218.989932] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Jul 13 12:02:15 ipaz-Latitude-5590 kernel: [ 9218.989933] Call Trace:
Jul 13 12:02:15 ipaz-Latitude-5590 kernel: [ 9218.989942] sta_info_move_state+0x276/0x370 [mac80211]
Jul 13 12:02:15 ipaz-Latitude-5590 kernel: [ 9218.989950] __sta_info_destroy_part2+0x2f/0x180 [mac80211]
Jul 13 12:02:15 ipaz-Latitude-5590 kernel: [ 9218.989961] __sta_info_flush+0x128/0x180 [mac80211]
Jul 13 12:02:15 ipaz-Latitude-5590 kernel: [ 9218.989975] ieee80211_set_disassoc+0xc0/0x5f0 [mac80211]
Jul 13 12:02:15 ipaz-Latitude-5590 kernel: [ 9218.989977] ? _raw_spin_unlock_bh+0x1e/0x20
Jul 13 12:02:15 ipaz-Latitude-5590 kernel: [ 9218.989991] __ieee80211_disconnect+0x86/0x120 [mac80211]
Jul 13 12:02:15 ipaz-Latitude-5590 kernel: [ 9218.990005] ieee80211_csa_connection_drop_work+0x15/0x20 [mac80211]
Jul 13 12:02:15 ipaz-Latitude-5590 kernel: [ 9218.990007] process_one_work+0x1eb/0x3b0
Jul 13 12:02:15 ipaz-Latitude-5590 kernel: [ 9218.990009] worker_thread+0x4d/0x400
Jul 13 12:02:15 ipaz-Latitude-5590 kernel: [ 9218.990011] kthread+0x104/0x140
Jul 13 12:02:15 ipaz-Latitude-5590 kernel: [ 9218.990012] ? process_one_work+0x3b0/0x3b0
Jul 13 12:02:15 ipaz-Latitude-5590 kernel: [ 9218.990014] ? kthread_park+0x90/0x90
Jul 13 12:02:15 ipaz-Latitude-5590 kernel: [ 9218.990016] ret_from_fork+0x35/0x40
Jul 13 12:02:15 ipaz-Latitude-5590 kernel: [ 9218.990019] ---[ end trace bcd86b3675848ca6 ]---
Jul 13 12:02:15 ipaz-Latitude-5590 kernel: [ 9218.990037] ------------[ cut here ]------------