Date: Tue, 11 May 2004 18:53:11 +0200 (CEST) From: Adrian Steinmann <ast@marabu.ch> To: FreeBSD-gnats-submit@FreeBSD.org Cc: sam@errno.com Subject: i386/66534: panic if_ath.c:2776 "transition to RUN state w/ no rates!" when no IP assigned to Level One WPC-0300 interface Message-ID: <200405111653.i4BGrBmg023010@marabu.ch> Resent-Message-ID: <200405111700.i4BH0UfR079429@freefall.freebsd.org>
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>Number: 66534
>Category: i386
>Synopsis: panic if_ath.c:2776 "transition to RUN state w/ no rates!" when no IP assigned to Level One WPC-0300 interface
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-i386
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Tue May 11 10:00:30 PDT 2004
>Closed-Date:
>Last-Modified:
>Originator: Adrian Steinmann
>Release: FreeBSD 5.2-CURRENT i386
>Organization:
Webgroup Consulting AG
>Environment:
System: FreeBSD nico 5.2-CURRENT FreeBSD 5.2-CURRENT #0: Sat May 8 14:15:53 CEST 2004 root@nico.marabu.ch:/usr/obj/usr/src/sys/NIC i386
>Description:
Level One WPC-0300 is probed correctly by ath() driver. However if no
IP has been assigned, it has no rate and kernel panics in if_ath.c
line 2776:
if (state == IEEE80211_S_RUN) {
/* start with highest negotiated rate */
KASSERT(ni->ni_rates.rs_nrates > 0,
("transition to RUN state w/ no rates!"));
at first use (i.e. with kismet) unless the interface has been assigned
an IP address.
>How-To-Repeat:
- Plug in card, but do *not* assign an IP with ifconfig ath0 inet ...
the ifconfig ath0 reports:
ath0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> mtu 1500
ether 00:03:2f:16:9f:ae
media: IEEE 802.11 Wireless Ethernet autoselect
status: no carrier
ssid ""
channel -1 authmode OPEN powersavemode OFF powersavesleep 100
rtsthreshold 2312 protmode CTS
wepmode OFF weptxkey 1
- Start kismet with kismet.conf source=radiotap_fbsd_b,ath0,ath0
- Kernel will panic
>Fix:
Workaround for now is never to forget an initial
ifconfig ath0 0.0.0.0
(it might even associate and thus have a negotiated rate):
ath0: flags=28943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500
inet6 fe80::203:2fff:fe16:9fae%ath0 prefixlen 64 scopeid 0x3
inet 0.0.0.0 netmask 0xff000000 broadcast 0.255.255.255
ether 00:03:2f:xx:xx:xx
media: IEEE 802.11 Wireless Ethernet autoselect <monitor>
status: associated
ssid AP 1:AP
channel 2 authmode OPEN powersavemode OFF powersavesleep 100
rtsthreshold 2312 protmode CTS
wepmode OFF weptxkey 1
Adrian
PS. This is the pciconf -lv of the
Level One WPC-0300 54Mbps Wireless Cardbus adapter:
ath0@pci2:0:0: class=0x020000 card=0x710116ab chip=0x0013168c rev=0x01 hdr=0x00
vendor = 'Atheros Communications Inc.'
device = '802/11b/g AR5212 wireless Adapter'
class = network
subclass = ethernet
See also http://www.level-one.de/products3.php?sklop=9&id=540520
which seems to describe a newer rev of this card (in german).
>Release-Note:
>Audit-Trail:
>Unformatted:
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