kern/60526: Post-PAE stable SMP machine freezes
Eugene Grosbein
eugen at kuzbass.ru
Wed Mar 17 20:00:40 PST 2004
The following reply was made to PR kern/60526; it has been noted by GNATS.
From: Eugene Grosbein <eugen at kuzbass.ru>
To: bug-followup at freebsd.org
Cc: sos at freebsd.org, stable at freebsd.org
Subject: Re: kern/60526: Post-PAE stable SMP machine freezes
Date: Thu, 18 Mar 2004 11:00:09 +0700
Hi!
According to
http://freebsd.rambler.ru/bsdmail/freebsd-hackers_2003/msg03936.html
the problem may be related to the <ServerWorks ROSB4 ATA33 controller>
and ATA write cache (hw.ata.wc=1).
Note however, I had no kernel panic with post-PAE STABLE.
I had kernel lockup. I can understand kernel panic due to the faulty
devices but not endless loop that it seems to happen.
It's known (and noted in the Errata for 4.9-RELEASE)
that PAE integration broke hw.ata.tags. Perhaps, its time
either to document that hw.ata.wc is broken for noted controller too,
either to forbid write cache for it by force.
I run my machine using pre-PAE 4.8-STABLE with security patches still.
Eugene Grosbein
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