iwn firmware instability with an up-to-date stable kernel

[Garrett Cooper]

2010/4/23 Garrett Cooper <yanefbsd at gmail.com>:
> 2010/4/18 Olivier Cochard-Labbé <olivier at cochard.me>:
>> 2010/4/18 Bernhard Schmidt <bschmidt at techwires.net>:
>>> Are you able to reproduce this on demand? As in type a few commands and
>>> the firmware error occurs?
>>>
>>
>> No, I'm not able to reproduce on demand this problem.
>
> I'm seeing similar issues on occasion with my Lenovo as well:
>
> Apr 23 19:25:24 garrcoop-fbsd kernel: firmware error log:
> Apr 23 19:25:24 garrcoop-fbsd kernel: error type      =
> "NMI_INTERRUPT_WDG" (0x00000004)
> Apr 23 19:25:24 garrcoop-fbsd kernel: program counter = 0x0000046C
> Apr 23 19:25:24 garrcoop-fbsd kernel: source line     = 0x000000D0
> Apr 23 19:25:24 garrcoop-fbsd kernel: error data      = 0x0000000207030000
> Apr 23 19:25:24 garrcoop-fbsd kernel: branch link     = 0x00008370000004C2
> Apr 23 19:25:24 garrcoop-fbsd kernel: interrupt link  = 0x000006DA000018B8
> Apr 23 19:25:24 garrcoop-fbsd kernel: time            = 4287402440
> Apr 23 19:25:24 garrcoop-fbsd kernel: driver status:
> Apr 23 19:25:24 garrcoop-fbsd kernel: tx ring  0: qid=0  cur=1   queued=0
> Apr 23 19:25:24 garrcoop-fbsd kernel: tx ring  1: qid=1  cur=0   queued=0
> Apr 23 19:25:24 garrcoop-fbsd kernel: tx ring  2: qid=2  cur=0   queued=0
> Apr 23 19:25:24 garrcoop-fbsd kernel: tx ring  3: qid=3  cur=36  queued=0
> Apr 23 19:25:24 garrcoop-fbsd kernel: tx ring  4: qid=4  cur=123 queued=0
> Apr 23 19:25:24 garrcoop-fbsd kernel: tx ring  5: qid=5  cur=0   queued=0
> Apr 23 19:25:24 garrcoop-fbsd kernel: tx ring  6: qid=6  cur=0   queued=0
> Apr 23 19:25:24 garrcoop-fbsd kernel: tx ring  7: qid=7  cur=0   queued=0
> Apr 23 19:25:24 garrcoop-fbsd kernel: tx ring  8: qid=8  cur=0   queued=0
> Apr 23 19:25:24 garrcoop-fbsd kernel: tx ring  9: qid=9  cur=0   queued=0
> Apr 23 19:25:24 garrcoop-fbsd kernel: tx ring 10: qid=10 cur=0   queued=0
> Apr 23 19:25:24 garrcoop-fbsd kernel: tx ring 11: qid=11 cur=0   queued=0
> Apr 23 19:25:24 garrcoop-fbsd kernel: tx ring 12: qid=12 cur=0   queued=0
> Apr 23 19:25:24 garrcoop-fbsd kernel: tx ring 13: qid=13 cur=0   queued=0
> Apr 23 19:25:24 garrcoop-fbsd kernel: tx ring 14: qid=14 cur=0   queued=0
> Apr 23 19:25:24 garrcoop-fbsd kernel: tx ring 15: qid=15 cur=0   queued=0
> Apr 23 19:25:24 garrcoop-fbsd kernel: rx ring: cur=8
>
> This may be because the system was under load (I was installing a port
> shortly before the connection dropped). I'll try poking at this
> further because it's going to be an annoying productivity loss :/.

    Sorry... should have included more helpful details.
Thanks,
-Garrett

dmesg:

iwn0: <Intel(R) PRO/Wireless 4965BGN> mem 0xdf2fe000-0xdf2fffff irq 17
at device 0.0 on pci3
iwn0: MIMO 2T3R, MoW1, address 00:1d:e0:7d:9f:c7
iwn0: [ITHREAD]
iwn0: 11a rates: 6Mbps 9Mbps 12Mbps 18Mbps 24Mbps 36Mbps 48Mbps 54Mbps
iwn0: 11b rates: 1Mbps 2Mbps 5.5Mbps 11Mbps
iwn0: 11g rates: 1Mbps 2Mbps 5.5Mbps 11Mbps 6Mbps 9Mbps 12Mbps 18Mbps
24Mbps 36Mbps 48Mbps 54Mbps

pciconf -lv snippet:

iwn0 at pci0:3:0:0:	class=0x028000 card=0x11108086 chip=0x42308086
rev=0x61 hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'Intel Wireless WiFi Link 4965AGN (Intel 4965AGN)'
    class      = network
cbb0 at pci0:21:0:0:	class=0x060700 card=0x20c617aa chip=0x04761180
rev=0xba hdr=0x02

uname -a:

$ uname -a
FreeBSD garrcoop-fbsd.cisco.com 8.0-STABLE FreeBSD 8.0-STABLE #0
r207006: Wed Apr 21 13:18:44 PDT 2010
root at garrcoop-fbsd.cisco.com:/usr/obj/usr/src/sys/LAPPY_X86  i386