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Date: Thu, 1 Jul 2004 15:15:31 -0400
From: Brian Fundakowski Feldman <green@freebsd.org>
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Subject: Re: Panic in "irq15: ata1" (perhaps just ATAPICAM...?)
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On Thu, Jul 01, 2004 at 03:08:03PM -0400, Brian Fundakowski Feldman wrote:
> Can you get a crashdump?  They seem to be broken for me (and lock up the
> system instead), but if you can do "call doadump" from the ddb> prompt
> you should be able to get it so we can further debug what's happening.
> It might be telling that you're able to get a panic without using DMA
> whereas I get a lockup with DMA, and quite possibly the same problem.
> Is there anything in dmesg, like messages about resetting devices?
> 
> I bet this is a buggy reset issue.

Also, are you using cd(4) devices with cdparanoia or acd(4)?  Make
sure to sysctl debug.bootverbose=1 before you try to reproduce this
again so you can get additional helpful output from ATA.

-- 
Brian Fundakowski Feldman                           \'[ FreeBSD ]''''''''''\
  <> green@FreeBSD.org                               \  The Power to Serve! \
 Opinions expressed are my own.                       \,,,,,,,,,,,,,,,,,,,,,,\