Date: Sat, 16 Sep 1995 00:28:05 -0700 (PDT) From: "Rodney W. Grimes" <rgrimes@GndRsh.aac.dev.com> To: davidg@Root.COM Cc: pst@shockwave.com, jmb@kryten.atinc.com, andreas@knobel.gun.de, current@freebsd.org Subject: Re: Which SUP files are available and where ? Message-ID: <199509160728.AAA01022@GndRsh.aac.dev.com> In-Reply-To: <199509152209.PAA02115@corbin.Root.COM> from "David Greenman" at Sep 15, 95 03:08:58 pm
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> > >I thought a couple of people were reporting sig 11 problems on -stable. > >Is it true that there are NO sig 11 problems that we're aware of? > > There are no known reliability problems with -stable. All of the people > that I'm aware of that reported (any sort of) problems have since figured > out what was causing them and have fixed them. There was one bug which Rod > found that was causing a "CMAP busy" panic, but this isn't a new problem > and has been with us since last year. It is caused by an attempt to read > from /dev/kmem in an area that has no currently mapped page. This results > in a page fault and subsequantly messed up 'CMAP' page table entry. The > problem will normally only be seen when you have an out of date > /var/db/kvm_kernel.foo.db file. It only happens at boot time and it's actually > quite rare. And should probably be added to the FAQ under an entry: Q. Why do I get a ``CMAP busy panic during boot just after installing a new kernel? A. The logic that attempts to detect an out of data /var/db/kvm_*.db files sometimes fails and using a mismatched file can sometimes lead to panics. F. rm /var/db/kvm_*.db -- Rod Grimes rgrimes@gndrsh.aac.dev.com Accurate Automation Company Reliable computers for FreeBSD
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