Date: Fri, 06 Jan 2006 08:52:05 -0800 From: Sam Leffler <sam@errno.com> To: Eric Anderson <anderson@centtech.com> Cc: freebsd-current@freebsd.org, Beech Rintoul <akbeech@gmail.com> Subject: Re: /dev/ath log messages Message-ID: <43BEA035.9030704@errno.com> In-Reply-To: <43BE7888.8060302@centtech.com> References: <200601060340.35999.akbeech@gmail.com> <43BE7888.8060302@centtech.com>
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Eric Anderson wrote: > Beech Rintoul wrote: > >> I have noticed that for about the past month or so I've been getting >> hundreds of the following every day in /var/log/messages: >> >> +ath0: link state changed to DOWN >> +ath0: link state changed to UP >> >> It doesn't seem to affect connectivity, but it's really annoying in >> the security report. Is there anything I can do to stop this? I'm >> running -CURRENT from yesterday. I have built Sam's new drivers, but >> this problem started long before that and was not affected by the >> upgrade. The lease on the AP I'm connecting to is good for 24 hours so >> I don't think that's an issue. I looked at the traffic with ethereal >> and everything looks normal. I'm getting sorely tempted to go back to >> isc-dhclient and see if this goes away, but I thought I would ask here >> first. >> >> >> > > I've noticed something recently too - my ath device frequently stops > working, and I get this in messages: > > Jan 6 06:19:48 neutrino kernel: ath0: link state changed to DOWN > Jan 6 06:20:35 neutrino kernel: ath0: device timeout > Jan 6 06:20:56 neutrino kernel: ath0: device timeout > Jan 6 06:21:06 neutrino kernel: ath0: device timeout > Jan 6 06:21:59 neutrino last message repeated 2 times > Jan 6 06:22:25 neutrino kernel: ath0: device timeout > Jan 6 06:23:03 neutrino kernel: ath0: link state changed to UP > Jan 6 06:41:35 neutrino kernel: ath0: link state changed to DOWN > Jan 6 06:42:03 neutrino kernel: Memory modified after free > 0xc5402000(2048) val=11600000 @ 0xc5402000 > Jan 6 06:42:04 neutrino kernel: ath0: link state changed to UP > Jan 6 06:42:08 neutrino kernel: ath0: device timeout > Jan 6 06:42:09 neutrino kernel: ath0: link state changed to DOWN > Jan 6 06:43:12 neutrino kernel: ath0: link state changed to UP > Jan 6 06:43:17 neutrino kernel: ath0: device timeout > Jan 6 06:43:17 neutrino kernel: ath0: link state changed to DOWN > Jan 6 06:43:33 neutrino kernel: ath0: device timeout > Jan 6 06:44:10 neutrino kernel: ath0: device timeout > [and so on] > > > I would say this started happening for me in the last 2 weeks. Device timeouts should not happen; it means the driver submitted a packet to the card and didn't get a tx complete interrupt back in 5 seconds. It's unclear if the "modified after free" msgs is related and w/o more diagnostic info it's really hard to say why you're seeing device timeouts. > > I'm running -current from Jan 4th. All kinds of system information is > here: > > http://googlebit.com/freebsd/ Most of the useful info is not there. No boot dmsg or indication of what your network config is. No indication of the hal version or the mac+phy revs. yada yada yada... Sam
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