Date: Sat, 16 Jun 2007 09:05:08 -0700 From: Sam Leffler <sam@errno.com> To: Stefan Ehmann <shoesoft@gmx.net> Cc: freebsd-current@freebsd.org, Andrew Thompson <thompsa@freebsd.org> Subject: Re: LOR in iwi with new 802.11 work Message-ID: <46740A34.4060703@errno.com> In-Reply-To: <200706161415.15641.shoesoft@gmx.net> References: <200706141641.54668.shoesoft@gmx.net> <200706151044.32493.shoesoft@gmx.net> <4672BD16.70707@errno.com> <200706161415.15641.shoesoft@gmx.net>
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Stefan Ehmann wrote: > On Friday 15 June 2007 18:23:50 Sam Leffler wrote: >> 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? >> Andrew already responded but if you want to disable bg scanning do: >> >> ifconfig iwi0 -bgscan > Was bgscan on for iwi before the latest changes? A "ifconfig iwi0 scan" seems > to cause a "scan stuck" every time. But this also happened before the 802.11 > changes IIRC. So this might be an old iwi bug after all. (I still wouldn't > mind if it was resolved :)) bgscan did not exist before the recent changes. Sam
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