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Date: Sat, 05 Jan 2008 12:30:03 +0100
From: Kris Kennaway <kris@FreeBSD.org>
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To: Simeon Nifos <archwndas@yahoo.com>
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Cc: freebsd-bugs@freebsd.org
Subject: Re: FreeBSD 7.0 RC1 AMD64 freezes when compiling in ext2fs partition
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Simeon Nifos wrote:
> Hello,
> 
> I would like to report a strange behaviour of 
> FreeBSD AMD64 ver. 7.0 RC1. I installed it on a 
> Laptop with Intel Core 2 Duo CPU. Everything default.
> I have an ext2fs partition
> where I store all installed compilers and libraries. 
> I changed directory to my ext3 (ext2fs) partition
> and I started compiling one of my libraries. The 
> system Hanged. I repeated the same thing with several
> other libraries (ATLAS(BLAS), LAPACK, ...) and
> 
> everytime
> the system hanged. Then I copied the sources to /usr
> and I compiled them there. No problem. Everything was
> fine 
> there. 
> 
> 
> There was a similar problem in the past and it was supposed to be fixed in 6.2. Maybe now for some reason it came back to life. It is very easy to repeat. Just mount an ext2fs partition copy some large source code and try to compile it there.

http://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/kerneldebug.html

Kris