Date: Sun, 9 Jan 2011 22:22:28 +0000 From: Anton Shterenlikht <mexas@bristol.ac.uk> To: freebsd-current@freebsd.org Subject: console freeze after "ifconfig wlan0 scan" with wi(4) pccard device Message-ID: <20110109222228.GA45587@mech-cluster241.men.bris.ac.uk>
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On amd64 r217010 laptop (HP Compaq 6715s)
I'm trying to use this wi(4) device:
wi0: <The Linksys Group, Inc. Instant Wireless Network PC Card>
at port 0x100-0x13f irq 20 function 0 config 1 on pccard0
I do
# ifconfig wlan0 create wlandev wi0
# ifconfig -a
bge0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=8009b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,LINKSTAT
E>
ether 00:1a:4b:89:4b:4e
inet 192.168.1.102 netmask 0xffffff00 broadcast 192.168.1.255
media: Ethernet autoselect (100baseTX <full-duplex>)
status: active
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
options=3<RXCSUM,TXCSUM>
inet 127.0.0.1 netmask 0xff000000
inet6 ::1 prefixlen 128
inet6 fe80::1%lo0 prefixlen 64 scopeid 0x8
nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
wi0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> metric 0 mtu 2290
ether 00:06:25:10:56:3b
media: IEEE 802.11 Wireless Ethernet autoselect (autoselect)
status: no carrier
wlan0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> metric 0 mtu 1500
ether 00:06:25:10:56:3b
media: IEEE 802.11 Wireless Ethernet autoselect (autoselect)
status: no carrier
ssid "" channel 1 (2412 MHz 11b)
country US authmode OPEN privacy OFF txpower 0 bmiss 7 scanvalid 60
bintval 0
But after
# ifconfig wlan0 up scan
I get console freeze requiring cold reboot.
No panic, just a LOR:
wi0: <The Linksys Group, Inc. Instant Wireless Network PC Card> at port 0x100-0x13f irq 20 function 0 config 1 on pccard0
wlan0: Ethernet address: 00:06:25:10:56:3b
lock order reversal:
1st 0xffffff80012be018 wi0_com_lock (wi0_com_lock) @ /usr/src/sys/net80211/ieee80211_scan.c:806
2nd 0xfffffe0001b8d010 wi0 (network driver) @ /usr/src/sys/dev/wi/if_wi.c:1083
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2a
kdb_backtrace() at kdb_backtrace+0x37
_witness_debugger() at _witness_debugger+0x2e
witness_checkorder() at witness_checkorder+0x807
_mtx_lock_flags() at _mtx_lock_flags+0x79
wi_raw_xmit() at wi_raw_xmit+0x68
ieee80211_send_probereq() at ieee80211_send_probereq+0x3f7
scan_curchan() at scan_curchan+0x49
scan_task() at scan_task+0x2d5
taskqueue_run_locked() at taskqueue_run_locked+0x93
taskqueue_thread_loop() at taskqueue_thread_loop+0x3f
fork_exit() at fork_exit+0x12a
fork_trampoline() at fork_trampoline+0xe
--- trap 0, rip = 0, rsp = 0xffffff80d401ad00, rbp = 0 ---
In case it matters I've
hw.cbb.start_memory="0xf4800000"
in /boot/loader.conf, according to
http://www.freebsd.org/cgi/query-pr.cgi?pr=115623
Please advise
many thanks
anton
--
Anton Shterenlikht
Room 2.6, Queen's Building
Mech Eng Dept
Bristol University
University Walk, Bristol BS8 1TR, UK
Tel: +44 (0)117 331 5944
Fax: +44 (0)117 929 4423
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