Date: Wed, 19 Jan 2011 09:37:12 +0100 From: Bernhard Schmidt <bschmidt@freebsd.org> To: Alexander Zagrebin <alex@zagrebin.ru> Cc: freebsd-net@freebsd.org Subject: Re: if_run and wlan_amrr: kernel panics on 8.2-PRERELEASE amd64 Message-ID: <201101190937.13015.bschmidt@freebsd.org> In-Reply-To: <20110119053550.GA13844@gw.zagrebin.ru> References: <20110118102658.GA3211@gw.zagrebin.ru> <201101181231.20381.bschmidt@freebsd.org> <20110119053550.GA13844@gw.zagrebin.ru>
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On Wednesday, January 19, 2011 06:35:51 Alexander Zagrebin wrote: > Hi! > > On 18.01.2011 12:31:20 +0100, Bernhard Schmidt wrote: > > > I'm trying to use the RT2872-based USB adapter in the hostap mode > > > on the latest RELENG_8 (8.2-PRERELEASE) for amd64. > > > [..] > > > > Pull that > > http://svn.freebsd.org/viewvc/base?view=revision&revision=217511 > > and let me know if that fixes the issue. > > I've retrieved the ieee80211_node.c and if_run.c and recompiled > wlan.ko and if_run.ko. > > Here results: > > Case 1: both if_run.ko and wlan_amrr.ko are loaded via loader.conf > > stable/8: panic > rev217511: panic > > Case 2: wlan_amrr.ko loaded manually _after_ if_run.ko but before > creation of the wlan interface > > stable/8: panic on rate control > rev217511: no panic, but rate control doesn't work; tx rate is > fixed on 1 Mbit/s > > Case 3: wlan_amrr.ko loaded _before_ if_run.ko > > stable/8: panic on rate control > rev217511: no panic, rate control works as expected > > So rev217511 partially fixes the issue. That sounds rather weird to me, I can't imagine how the module loading order should make any difference. Well, at least, before creating the VAP, because that is the point where that stuff gets initialized/used. Do you have anything configured in rc.conf maybe? That would create the VAP right after loading if_run.ko even before you are able to load wlan_amrr.ko. I'll have look at that again.. -- Bernhard
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