kern/59260: Panic by integer divide fault in Thinkpad A31p /
IRQ Problem?
Daniel Lang
dl at leo.org
Wed Dec 3 04:50:28 PST 2003
The following reply was made to PR kern/59260; it has been noted by GNATS.
From: Daniel Lang <dl at leo.org>
To: freebsd-gnats-submit at FreeBSD.org
Cc: imp at freebsd.org, jhb at freebsd.org
Subject: Re: kern/59260: Panic by integer divide fault in Thinkpad A31p / IRQ Problem?
Date: Wed, 3 Dec 2003 13:48:35 +0100
Dear Warner, Dear John,
I believe the problem is solved now. Although the live debugging
did not turn up anything useful to me, meanwhile, I stumbled
upon something else:
In a newsarticle
hw.pci.allow_unsupported_io_range
was mentioned, together with a (different) problem on a
Thinkpad (different model). I set this sysctl to 1
in /boot/loader.conf and now, it appears the system works
like charm now.
I'm not sure how to rate this. I guess it means quirky
hardware, that is out of spec, but there exists a workaround.
I'm happy that my system seems to work now, but I guess
the panics should be prevented. Maybe the quirky hardware
can be detected, a big warning messages issued during boot, and
the workaround activated? Well, I guess that would be difficult
if not impossible, otherwise it would have been done already.
Please submit this workaround to the PR (my last email to you
and freebsd-gnats-submit@ was somehow not included into the
audit trail). Feel free to close it then.
Thanks again for your explanations.
Best regards,
Daniel
--
IRCnet: Mr-Spock - Truth lies in the eye of the beholder -
Daniel Lang * dl at leo.org * +49 89 289 18532 * http://www.leo.org/~dl/
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