bin/78570: "wicontrol -i wi0 -C" outputs garbage

[Mark Knight]

>Number:         78570
>Category:       bin
>Synopsis:       "wicontrol -i wi0 -C" outputs garbage
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Mar 08 01:40:02 GMT 2005
>Closed-Date:
>Last-Modified:
>Originator:     Mark Knight
>Release:        FreeBSD 5.4-PRERELEASE i386
>Organization:
>Environment:
System: FreeBSD shrewd.pub.knigma.org 5.4-PRERELEASE FreeBSD 5.4-PRERELEASE #0: Tue Mar 8 00:35:53 GMT 2005 root at shrewd.pub.knigma.org:/slave/usr/obj/usr/src/sys/SHREWD i386
>Description:
Since at least 5.3, wicontrol -i wi0 -C has been broken.  The same
interface configuration used to work fine on RELENG_4.  Shame, since
it's a really good way to see who's been associated to a "hostap"
access point.

wicontrol -i wi0 -l works fine.

wicontrol -i wi0 -C displays total nonsense before dumping core:
[1/1614089728]: 32:80:00:00:00:00, 54.0.0.0, sig: 0, noise: 0, qual: 0
[2/1614089728]: 00:00:00:00:00:00, 0.0.0.0, sig: 0, noise: 0, qual: 0
[3/1614089728]: 00:00:00:00:00:00, 0.0.0.0, sig: 0, noise: 0, qual: 0
......snip lots of garbage........
[209/1614089728]: 00:00:00:00:00:00, 0.0.0.0, sig: 0, noise: 0, qual: 0
[210/1614089728]: 00:00:00:00:00:00, 0.0.0.0, sig: 0, noise: 0, qual: 0
[211/1614089728]: 00:00:00:00:00:00, 0.0.0.0, sig: 0, noise: 0, qual:
Bus error (core dumped)

gdb:
#0  0x0804ad63 in wi_readcache (iface=0xbfbfeceb "wi0")
    at /usr/src/usr.sbin/wicontrol/wicontrol.c:1044
1044			printf(" %02x:%02x:%02x:%02x:%02x:%02x,",
#1  0x0804afd7 in main (argc=4, argv=0xbfbfebd8)
    at /usr/src/usr.sbin/wicontrol/wicontrol.c:1112

dmesg:
wi0: <Intersil Prism2.5> mem 0xf15ff000-0xf15fffff irq 11 at device 10.0 on pci1
wi0: using RF:PRISM2.5 MAC:ISL3874A(Mini-PCI)
wi0: Intersil Firmware: Primary (1.1.0), Station (1.4.9)
wi0: Ethernet address: 00:09:5b:2f:b3:03
wi0: 11b rates: 1Mbps 2Mbps 5.5Mbps 11Mbps

ifconfig:
wi0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
        inet6 fe80::209:5bff:fe2f:b303%wi0 prefixlen 64 scopeid 0x2 
        inet 217.169.23.233 netmask 0xfffffff8 broadcast 217.169.23.239
        inet6 2001:8b0:b0:3:209:5bff:fe2f:b303 prefixlen 64 
        inet6 2001:8b0:b0:3:: prefixlen 64 anycast 
        ether 00:09:5b:2f:b3:03
        media: IEEE 802.11 Wireless Ethernet DS/11Mbps <hostap> (DS/2Mbps <hostap>)
        status: associated
        ssid knigma 1:knigma
        stationname "FreeBSD WaveLAN/IEEE node"
        channel 7 authmode OPEN powersavemode OFF powersavesleep 100
        rtsthreshold 2312 protmode CTS
        wepmode OFF weptxkey 1
>How-To-Repeat:
	wicontrol -i wi0 -C
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted: