wl driver throws stack trace repeatdly

[zebul666]

wl driver is thriwing stack trace repeatdly in log

avril 19 09:13:56 titan kernel: Hardware name: Dell Inc. Inspiron 3521/06RYX8, BIOS A12 10/25/2013
avril 19 09:13:56 titan kernel: RIP: 0010:cfg80211_roamed+0x217/0x230 [cfg80211]
avril 19 09:13:56 titan kernel: Code: 00 00 00 49 8d 4d 70 4c 89 f7 45 0f b6 85 90 00 00 00 6a 02 48 8b 36 e8 37 8c fd ff 48 89 43 08 5a 48 85 c0 0f 8
avril 19 09:13:56 titan kernel: RSP: 0018:ffffae46c150bdb0 EFLAGS: 00010246
avril 19 09:13:56 titan kernel: RAX: 0000000000000000 RBX: ffffae46c150be00 RCX: 0000000000000002
avril 19 09:13:56 titan kernel: RDX: 0000000000000002 RSI: 00000000fffffe01 RDI: ffffffffc07b92b4
avril 19 09:13:56 titan kernel: RBP: ffffae46c150bde0 R08: 0000000000000000 R09: 0000000000000000
avril 19 09:13:56 titan kernel: R10: ffffae46c150be00 R11: ffff9c7f769b4fba R12: 00000000006000c0
avril 19 09:13:56 titan kernel: R13: ffff9c7f77550c00 R14: ffff9c7f769b4300 R15: dead000000000100
avril 19 09:13:56 titan kernel: FS: 0000000000000000(0000) GS:ffff9c7f870c0000(0000) knlGS:0000000000000000
avril 19 09:13:56 titan kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
avril 19 09:13:56 titan kernel: CR2: 00007ffc4c52bbe8 CR3: 0000000238ada001 CR4: 00000000001626e0
avril 19 09:13:56 titan kernel: Call Trace:
avril 19 09:13:56 titan kernel: wl_bss_roaming_done.isra.25+0xd6/0x110 [wl]
avril 19 09:13:56 titan kernel: ? wl_bss_roaming_done.isra.25+0xd6/0x110 [wl]
avril 19 09:13:56 titan kernel: wl_notify_roaming_status+0x44/0x60 [wl]
avril 19 09:13:56 titan kernel: ? down_interruptible+0x33/0x60
avril 19 09:13:56 titan kernel: wl_event_handler+0x6c/0x150 [wl]
avril 19 09:13:56 titan kernel: kthread+0x120/0x140
avril 19 09:13:56 titan kernel: ? wl_notify_scan_status+0x230/0x230 [wl]
avril 19 09:13:56 titan kernel: ? __kthread_parkme+0x70/0x70
avril 19 09:13:56 titan kernel: ret_from_fork+0x35/0x40
avril 19 09:13:56 titan kernel: ---[ end trace c5aea32843ce9cab ]---

broadcom-sta-dkms does not behave like that.

But both driver are unable to let me to connect to my AP with AUTH failed (WPA2 handshake failing)

ProblemType: Bug
DistroRelease: Ubuntu 19.04
Package: bcmwl-kernel-source (not installed)
ProcVersionSignature: Ubuntu 5.0.0-13.14-generic 5.0.6
Uname: Linux 5.0.0-13-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.20.10-0ubuntu27
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Fri Apr 19 10:47:04 2019
InstallationDate: Installed on 2018-05-07 (346 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
SourcePackage: bcmwl
UpgradeStatus: Upgraded to disco on 2019-04-18 (0 days ago)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Oisín Mac Fhearaí (denpashogai)]

I'm seeing a very similar stacktrace in focal with kernel 5.4.0-73-generic, although it's not constantly popping up AFAICT:

[133613.129375] ------------[ cut here ]------------
[133613.129433] WARNING: CPU: 2 PID: 542 at net/wireless/sme.c:973 cfg80211_roamed+0x210/0x230 [cfg80211]
[133613.129435] Modules linked in: xt_MASQUERADE nf_conntrack_netlink nfnetlink xfrm_user xfrm_algo iptable_nat xt_addrtype iptable_filter bpfilter xt_conntrack nf_nat n
f_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c br_netfilter bridge stp llc aufs snd_hda_codec_hdmi intel_powerclamp kvm_intel kvm intel_cstate snd_hda_codec_realtek
 snd_hda_codec_generic ledtrig_audio snd_hda_intel snd_intel_dspcfg snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_seq_midi samsung_laptop snd_seq_midi_event snd_rawmi
di uvcvideo videobuf2_vmalloc videobuf2_memops snd_seq videobuf2_v4l2 btusb videobuf2_common btrtl btbcm btintel videodev bluetooth snd_seq_device serio_raw input_leds s
nd_timer joydev mc binfmt_misc ecdh_generic wl(POE) snd ecc cfg80211 soundcore mac_hid sch_fq_codel cuse coretemp parport_pc ppdev lp parport ip_tables x_tables autofs4
hid_logitech_hidpp hid_logitech_dj hid_generic usbhid hid nouveau mxm_wmi wmi i2c_algo_bit ttm drm_kms_helper syscopyarea sysfillrect psmouse sysimgblt fb_sys_fops
[133613.129500] ahci drm sky2 libahci i2c_i801 lpc_ich video
[133613.129512] CPU: 2 PID: 542 Comm: wl_event_handle Kdump: loaded Tainted: P W OE 5.4.0-73-generic #82-Ubuntu
[133613.129514] Hardware name: SAMSUNG ELECTRONICS CO., LTD. Q430/Q530 /Q430/Q530 , BIOS 02KF.M008.20100529.KSJ 05/29/2010
[133613.129550] RIP: 0010:cfg80211_roamed+0x210/0x230 [cfg80211]
[133613.129554] Code: 00 00 00 49 8d 4d 70 4c 89 f7 45 0f b6 85 90 00 00 00 6a 02 48 8b 36 e8 7e 54 fd ff 48 89 43 08 5a 48 85 c0 0f 85 36 fe ff ff <0f> 0b eb 85 0f 0b 4
8 8b 73 08 49 8b 7d 00 e8 1d 4d fd ff e9 71 ff
[133613.129556] RSP: 0018:ffffac4ac0e47db0 EFLAGS: 00010246
[133613.129559] RAX: 0000000000000000 RBX: ffffac4ac0e47e00 RCX: 0000000000000003
[133613.129561] RDX: 0000000000000002 RSI: 00000000fffffe01 RDI: ffffffffc061587a
[133613.129563] RBP: ffffac4ac0e47de0 R08: 0000000000000000 R09: ffff898c94e5e0f8
[133613.129565] R10: ffff898c94e5efba R11: fffffffefe0390b6 R12: 0000000000000cc0 ...