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Date:      Mon, 19 Jul 2021 11:43:50 +0000
From:      bugzilla-noreply@freebsd.org
To:        wireless@FreeBSD.org
Subject:   [Bug 256494] KERNEL PANIC - WiFi - after hot spot is down FreeBSD restarts
Message-ID:  <bug-256494-21060-uLTl3IT9Rw@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-256494-21060@https.bugs.freebsd.org/bugzilla/>
References:  <bug-256494-21060@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D256494

--- Comment #8 from vermaden@interia.pl ---
I also found an interesting 'side effect'.

After my main home WiFi ssid disappeared (power outage) I was not able to
connect to my temporary WiFi hotspot served from phone.

I even commented out (with '#' chars) my home WiFi ssid from
/etc/wpa_supplicant.conf and *ifconfig wlan0* still showed ssid as my home =
WiFi
network.

Resetting that with these did not helped:
  # ifconfig wlan0 ssid -
  # ifconfig wlan0 ssid phone-net

Other interesting thing - after doing *destroy* on that wlan0 interface it
reappeared itself after bring destroyed with ssid to my home WiFi network (=
the
on that disappeared during power outage).

  # ifconfig wlan0 destroy
  # ifconfig wlan0 destroy
  ifconfig: interface wlan1 does not exist
  # ifconfig wlan0 destroy
  # ifconfig wlan0 destroy

Each command executed successfully because wlan0 recreated itself. If I typ=
ed
them too fast then they yield that wlan0 does not exists and the next execu=
tion
was successful because wlan0 again existed without me creating it.

I have 3 additional /var/crash dumps but I will upload them later when not =
on a
WWAN connection.

When that laptop rebooted with crash dump the WiFi card was still fucked up
each time. The only thing that allowed me to connect to different WiFi netw=
ork
after my main WiFi network disappeared was to push power button for 5 secon=
ds
to power down that laptop 'hard' and start fresh boot.

Hope that helps.

This is 13.0-RELEASE without any patches as the ones that showed were not
vulnerable to me.

Regards.

--=20
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