I was connecting to the wifi cloud at my school:
$ sudo ifconfig ath0 nwid uw-wireless up && sudo dhclient ath0 && lynx
(the lynx is just to go to the login page we have to to unlock all our ports).

I put the laptop lid down, causing the screen the blank
(and therefore the wireless to stop processing packets--this is another bug,
entirely reproducible for me, but that I haven't got around to reporting)
so I pulled out the cardbus card and quickly plugged it back in and quickly
(as in, within half a second of plugging in the card) ran:
$ sudo ifconfig ath0 nwid uw-wireless up && sudo dhclient ath0 && lynx
and then it panicked

I typed this all out by hand (on my zaurus no
less, from which I am now posting it from, even)
so I hope I got all the numbers right.

panic: pool_get(mclpl): free list modified: magic=80; page=0xd6137000;
item addr 0xd61337000
Stopped at Debugger+0x4: leave
RUN AT LEAST 'trace' AND 'ps' AND INCLUDE THIS INFORMATION WHEN
REPORTING THIS PANIC!
DO NOT EVEN OTHER REPORTING THIS WITHOUT INCLUDING THAT INFORMATION!
ddb> trace
Debugger(d607944c0,d6137800,e3a78920,d6137000,d077 ac40) at Debugger+0x4
panic(d067b260,d067d129,80,d6137000,d6137000) at panic+0x63
pool_get(d077ac40,0,50,d029eda0,d0d58000) at pool_get+0x2e9
ath_getmbuf(1,1,800,d0d59000) at ath_getmbuf+0xcd
ath_rxbuf_init(d0d58000,d0d5b65c,e3a789e0,d0d58030 ) at ath_rxbuf_init+0xd7
ath_startrecv(d0d58000,d0d58292,d046a4bd,d0dd0100) at ath_startrecv+0x32
ath_init1(d0d58000,1,e3a78a80,d032e15d,50) at ath_init1+0xf5
ath_ioctl(d0d58030,8020690c,d0d70900,e3a78ca4) at ath_ioctl+0xe1
in6_purgeif(d0d58030,d0d70900,e3a78c88,1) at in6_purgeif+0x6f9
in6_update_ifa(d0d58030,e3a78c78,0,e3a70700) at in6_update_ifa+0x1f5
in6_ifattach_linklocal(d0d58030,0,e3a78e78,e3a78e7 8,0) at
in6_ifattach_linklocal+0xe3
in6_ifattach(d0d58030,0,e3a78e40,d036fbd3,0) at in6_ifattach+0xd9
in6_if_up(d0d58030,0,1,0,1f7000) at in6_if_up+0x12
ifioctl(d614f354,80206910,e3a78e78,d61e6df0,7dc1c0 00) at ifioctl+0x3c3
sys_ioctl(d61e6df0,e3a78f68,e3a78f58,ffff8823,1fb) at sys_ioctl+0x125
syscall() at syscall+0x24a
--- syscall (number 54) ---
0x1c007ac5:
ddb>
ddb> ps
PID PPID PGRP UID S FLAGS WAIT COMMAND
*21085 30976 21085 0 7 0x4002 ifconfig
6468 1 6468 0 3 0x4082 ttyin getty
1404 1 14040 0 3 0x4082 ttyin getty
6306 1 6036 0 3 0x4082 ttyin getty
7976 1 7976 0 3 0x4082 ttyin getty
30976 1 30976 1000 3 0x4082 pause ksh
9185 1 9185 0 3 0x80 select cron
22419 1 22419 0 3 0x80 kqread apmd
9821 1 9821 0 3 0x80 select sshd
24642 1 204642 0 3 0x40180 select sendmail
20556 1 20556 0 3 0x180 select inetd
8040 32453 32453 83 3 0x180 poll ntpd
32453 1 32453 0 3 0x80 poll ntpd
31171 10372 10372 73 3 0x180 poll syslogd
10372 1 10372 0 3 0x88 netio syslogd
16 0 0 0 3 0x1002000 crypto_wa crypto
15 0 0 0 3 0x1002000 aiodoned aiodoned
14 0 0 0 3 0x1002000 synder update
13 0 0 0 3 0x1002000 cleaner cleaner
12 0 0 0 3 0x1002000 reaper reaper
11 0 0 0 3 0x1002000 pgdaemon pagedaemon
10 0 0 0 3 0x1002000 pftm pfpurge
9 0 0 0 3 0x1002000 wait wskb_hotkey
8 0 0 0 3 0x1002000 cardslote cardslot1
7 0 0 0 3 0x1002000 cardslote cardslot0
6 0 0 0 3 0x1002000 usbtsk usbtask
5 0 0 0 3 0x1002000 usbevt usb0
4 0 0 0 3 0x1002000 slacking scsi
3 0 0 0 3 0x1002000 apmev apm0
2 0 0 0 3 0x1002000 kmalloc kmthread
1 0 1 0 3 0x4080 wait init
0 -1 0 0 3 0x80200 scheduler swapper



-Nick