https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=221496
Bug ID: 221496
Summary: KERNEL PANIC with iwn driver
Product: Base System
Version: 11.1-RELEASE
Hardware: amd64
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: wireless
Assignee: freebsd-wireless@FreeBSD.org
Reporter: verma...@interia.pl
Hi,
I am able to KERNEL PANIC the latest FreeBSD 11.1-RELEASE-p1 with using these
two scripts.
# cat netdown.sh
killall -9 wpa_supplicant
killall -9 ppp
killall -9 dhclient
ifconfig wlan0 destroy
ifconfig em0 down
/etc/rc.d/netif onerestart
# cat netup.sh
killall -9 wpa_supplicant
killall -9 ppp
killall -9 dhclient
ifconfig wlan0 destroy
ifconfig em0 down
/etc/rc.d/netif onerestart
ifconfig wlan0 create wlandev iwn0
ifconfig wlan0 ether 00:1e:bd:a5:61:2b
ifconfig wlan0 up
wpa_supplicant -i wlan0 -c /etc/wpa_supplicant.conf -s -B
dhclient wlan0
Sometimes its not that instant and works after several minutes, but when You
randomly start each of them, then the panic would occur, for example like that:
# netup.sh &
# netup.sh &
# netdown.sh &
# netup.sh &
# netdown.sh &
# netdown.sh &
# netup.sh &
# netdown.sh &
# netup.sh &
# netdown.sh &
...
The wireless card is 'Centrino Advanced-N 6205 [Taylor Peak]' in ThinkPad T520.
Its probably not 'em' driver related but I left it there because these are the
commands that I actually execute.
The MAC in the above script is generated (but with first three octets from real
OUI).
Regards,
vermaden
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