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Date:      Wed, 09 Jun 2021 06:41:38 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 256494] KERNEL PANIC - WiFi - after hot spot is down FreeBSD restarts
Message-ID:  <bug-256494-227@https.bugs.freebsd.org/bugzilla/>

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

            Bug ID: 256494
           Summary: KERNEL PANIC - WiFi - after hot spot is down FreeBSD
                    restarts
           Product: Base System
           Version: 13.0-RELEASE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: bugs@FreeBSD.org
          Reporter: vermaden@interia.pl

Hi.

My /etc/rc.conf settings related to network.

    hostname=3Dw520.local
    background_dhclient=3DYES
    extra_netfs_types=3DNFS
    defaultroute_delay=3D3
    defaultroute_carrier_delay=3D3
    harvest_mask=3D351

I start my network connections manually with script so that is why no netwo=
rk
settings in /etc/rc.conf file.

My /etc/wpa_supplicant.conf WiFi network.

    eapol_version=3D2
    ap_scan=3D1
    fast_reauth=3D1

    network=3D{
      ssid=3D"vermore5"
      psk=3D"password"
      priority=3D6
    }

My hardware is ThinkPad W520 from 2011 with Intel 6300 WiFi:

    # pciconf -lv
    (...)
    iwn0@pci0:3:0:0:        class=3D0x028000 rev=3D0x3e hdr=3D0x00 vendor=
=3D0x8086
device=3D0x4238 subvendor=3D0x8086 subdevice=3D0x1111
        vendor     =3D 'Intel Corporation'
        device     =3D 'Centrino Ultimate-N 6300'
        class      =3D network



Steps to reproduce:

1. Connect to your hot spot WiFi:
    # wpa_supplicant -i wlan0 -c /etc/wpa_supplicant.conf -s -B
    # dhclient wlan0

2. You have Internet connection as usual - everything works.

3. Power off the hot spot WiFi (so it will not be accessible)

4. FreeBSD panics and reboots.



Hope that helps.

Regards.

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