Date: Sun, 12 Oct 2008 03:33:18 +0200 From: "barbara" <barbara.xxx1975@libero.it> To: "green_tiger" <green_tiger@comcast.net>, "freebsd-stable" <freebsd-stable@FreeBSD.org> Subject: Re: 6.4-PRELEASE sporadically panicking with fatal trap 12 Message-ID: <K8LQZI$51A26503FC7628E84F4AB385C047C88F@libero.it>
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> barbara wrote: > > Hello, > > I'm running 6.4-PRELEASE, last built on 2008-10-05 with /usr/src upda= ted on the same day. > > I had a panic that looks to me very similiar to the one described her= e (hence the subject): > > http://lists.freebsd.org/pipermail/freebsd-stable/2008-September/0454= 05.html > > > > What caught my curiosity is the message: > > > > Unread portion of the kernel message buffer: > > > > acd0: WARNING - TEST_UNIT_READY read data overrun 18>0 > > > > kernel trap 12 with interrupts disabled > > > > I don't have atapicam built in the kernel and it wasn't loaded, and I= 'm pretty sure no media was inserted in my dvdrw unit since the last boot= . > > The other report has a similar message too (acd1: WARNING - READ_TOC = read data overrun 18>12) > > > > > > Here's the backtrace: > > > Interesting. I ran 6.3 for a bit before I changed over to 7.0. Neithe= r > 6.3 or 7.0 exhibited this problem. > > I'm at 7.1 prerelease #4 now, and I'm using Fluxbox instead of Gnome. > The system has been up six days with no problems. I'll probably try > using Gnome again after 7.1 release is out. There's also a patch to AT= A > that I might try. Or possibly I'll just wait for 7.1. :-) > Obviously I was confused when I wrote about atapicam, in fact the message= is about acd0. Anyway I'm sure that no media was inserted during the whole uptime. I'm running both 6 and 7 stable and I've never seen this before too. Few minutes ago, while cron was running, the system froze for a couple of= minutes and the these lines was added to /var/log/messages: acd0: WARNING - PREVENT_ALLOW taskqueue timeout - completing request dir= ectly acd0: WARNING - PREVENT_ALLOW freeing taskqueue zombie request and again, no media was inserted. The only change I did in the last days was enabling powerd, I have no ide= a if this could be related.
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