*BSD News Article 35760


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From: bde@kralizec.zeta.org.au (Bruce Evans)
Newsgroups: comp.os.386bsd.questions
Subject: Re: HELP: Fatal trap 25 during FreeBSD install!
Date: 14 Sep 1994 01:56:26 +1000
Organization: Kralizec Dialup Unix Sydney - +61-2-837-1183, v.32bis v.42bis
Lines: 24
Message-ID: <354i3aINN8t2@godzilla.zeta.org.au>
References: <351b5j$6of@kaiwan.kaiwan.com>
NNTP-Posting-Host: godzilla.zeta.org.au

In article <351b5j$6of@kaiwan.kaiwan.com>,
Mike Carlson <carlson@kaiwan.com> wrote:
>
>     I am trying to install FreeBSD v.1.0 and I get the following during 
>install:
>
>Fatal trap 25: invalid TSS fault while in kernel mode
>trap type = 25, code = fe130000
>    eip = fe0517a5, cs = fdbf0008, eflags = 3282, cr2 = 0, current -
>  priority = ffffffff
>
>panic: invalid TSS fault
>press reset
>
>
>     This happens right after I try to load the filesystem disk.  (I am 

This bug is fixed in FreeBSD 1.1.5.  For 1.1, it can probably be worked
around by booting twice.  (Something before the boot, e.g., DOS, sets
the Nested Task flag and FreeBSD doesn't clear the flag early enough.
It clears the flag when trap() is called so there is no problem if the
first trap is not for an invalide TSS.)
-- 
Bruce Evans  bde@kralizec.zeta.org.au