LOR in iwi with new 802.11 work

Andrew Thompson thompsa at freebsd.org
Fri Jun 15 10:39:55 UTC 2007


On Fri, Jun 15, 2007 at 10:44:31AM +0200, Stefan Ehmann wrote:
> On Thursday 14 June 2007 18:16:54 Sam Leffler wrote:
> > Stefan Ehmann wrote:
> > > After the system is up for about 5 minutes, I see this LOR. Haven't seen
> > > it posted yet.
> > >
> > > Stefan
> > >
> > > lock order reversal:
> > >  1st 0xc2e4700c ieee80211com (802.11 com lock)
> > > @ /usr/src/sys/net80211/ieee80211_scan.c:523
> > >  2nd 0xc2e48400 iwi0 (network driver)
> > > @ /usr/src/sys/modules/iwi/../../dev/iwi/if_iwi.c:1908
> ...
> >
> > Yes, known and can safely be ignored.
> 
> Okay, thanks.
> 
> Another problem I've noticed (don't want to start a new thread):
> 
> Before the latest commit, I've never seen dropouts in the connnection.
> 
> But now I've seen for the second time that the connection drops for some 
> seconds. ifconfig shows no IP address. At least it recovers, but open 
> connections die.
> 
> In dmesg I see:
> 
> Jun 15 10:34:25 something kernel: iwi0: firmware stuck in state 4, resetting
> Jun 15 10:34:25 something kernel: iwi0: link state changed to DOWN
> Jun 15 10:34:28 something kernel: iwi0: link state changed to UP
> 
> Is this a known issue? Do you need any more info?

It appears to get stuck in background scanning. How often does it
happen? If you could set debug.iwi=3 and then email the logs for a
couple of iterations of the reset.


cheers,
Andrew


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