5.2.1-Current freeze caused by copying audio CD-ROM

Brian Fundakowski Feldman green at freebsd.org
Tue Jun 29 09:18:07 PDT 2004

On Tue, Jun 29, 2004 at 02:29:05PM +0000, Christoph Sold wrote:
> Hi Folks,
> I can repeatably freeze my Current box using a few problematic CDs. All it takes
> is to read the CD using dd, cdparanoia et. al.
> A few seconds before the freez occurs the system slows down, I/O goes way up for
> a few seconds. After that, the system does not respond. To any keyboard, net, or
> serial activity. I've waited a few nights to check the system does not react.
> Any ideas how to debug this problem?

Nothing much to report except that it happens for me, too, whether it's
with the regular acd(4) device or the ATAPI-CAM cd(4) device.  It seems
like it's a not a hardware issue.  The process in the ata/acd/atapicam
drivers dealing with detachment might be particularly messy.  These
lock-ups in general are almost as annoying as the ones that various
people (myself included) are having from during the boot process.  If
you have a serial console, it would be worth seeing if it can respond
that way.

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

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