Bug#403313: [pkg-wpa-devel] Bug#403313: segfault if the interface is not present

[Kel Modderman]

Hi Eduard,

On Saturday 16 December 2006 18:37, Eduard Bloch wrote:
> I just discovered that current wpa_supplicant just segfaults if the
> specified interface is not available at all. Here the log and strace
> log, as executed by ifup:
>
> ifup eth1=kpax
> ioctl[SIOCSIWPMKSA]: No such device
> ioctl[SIOCSIWMODE]: No such device
> Could not configure driver to use managed mode
> ioctl[SIOCGIFFLAGS]: No such device
> Could not set interface 'eth1' UP
> ioctl[SIOCGIWRANGE]: No such device
> ioctl[SIOCGIFINDEX]: No such device
> /etc/wpa_supplicant/functions.sh: line 160: 27028 Segmentation fault
> start-stop-daemon --start --oknodo $DAEMON_VERBOSITY --name
> $WPA_SUP_PNAME --startas $WPA_SUP_BIN --pidfile $WPA_SUP_PIDFILE --
> $WPA_SUP_OPTIONS -D $WPA_SUP_DRIVER $WPA_SUP_CONF
> wpa_supplicant: /sbin/wpa_supplicant daemon failed to start
> run-parts: /etc/network/if-pre-up.d/wpasupplicant exited with return
> code 1
> Internet Systems Consortium DHCP Client V3.0.4
> Copyright 2004-2006 Internet Systems Consortium.
> All rights reserved.
> For info, please visit http://www.isc.org/sw/dhcp/
>
> SIOCSIFADDR: No such device
> eth1: ERROR while getting interface flags: No such device
> eth1: ERROR while getting interface flags: No such device
>

Confirmed. I've pinged upstream about this. Would be nicer if it had a sanity 
check before crashing and burning.

$ sudo wpa_supplicant -c/etc/wpa_supplicant/wpa_supplicant.conf -Dwext -ifoo0
ioctl[SIOCSIWPMKSA]: No such device
ioctl[SIOCSIWMODE]: No such device
Could not configure driver to use managed mode
ioctl[SIOCGIFFLAGS]: No such device
Could not set interface 'foo0' UP
ioctl[SIOCGIWRANGE]: No such device
ioctl[SIOCGIFINDEX]: No such device
Segmentation fault

Thanks, Kel.